ipath_file_ops.c revision 569b87b47f906d65ee35d6ecc4767f20a6390b9b
17f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan/* 2c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. 37f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. 47f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 57f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * This software is available to you under a choice of one of two 67f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * licenses. You may choose to be licensed under the terms of the GNU 77f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * General Public License (GPL) Version 2, available from the file 87f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * COPYING in the main directory of this source tree, or the 97f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * OpenIB.org BSD license below: 107f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * Redistribution and use in source and binary forms, with or 127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * without modification, are permitted provided that the following 137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * conditions are met: 147f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * - Redistributions of source code must retain the above 167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * copyright notice, this list of conditions and the following 177f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * disclaimer. 187f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * - Redistributions in binary form must reproduce the above 207f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * copyright notice, this list of conditions and the following 217f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * disclaimer in the documentation and/or other materials 227f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * provided with the distribution. 237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 247f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 257f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 267f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * SOFTWARE. 327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 337f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 347f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan#include <linux/pci.h> 357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan#include <linux/poll.h> 367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan#include <linux/cdev.h> 377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan#include <linux/swap.h> 387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan#include <linux/vmalloc.h> 397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan#include <asm/pgtable.h> 407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 417f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan#include "ipath_kernel.h" 4227b678dd04a636f2c351816f4b3042c8815d4e9dBryan O'Sullivan#include "ipath_common.h" 437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic int ipath_open(struct inode *, struct file *); 457f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic int ipath_close(struct inode *, struct file *); 467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic ssize_t ipath_write(struct file *, const char __user *, size_t, 477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan loff_t *); 487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic unsigned int ipath_poll(struct file *, struct poll_table_struct *); 497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic int ipath_mmap(struct file *, struct vm_area_struct *); 507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 512b8693c0617e972fc0b2fd1ebf8de97e15b656c3Arjan van de Venstatic const struct file_operations ipath_file_ops = { 527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan .owner = THIS_MODULE, 537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan .write = ipath_write, 547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan .open = ipath_open, 557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan .release = ipath_close, 567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan .poll = ipath_poll, 577f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan .mmap = ipath_mmap 587f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan}; 597f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 600a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell/* 610a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell * Convert kernel virtual addresses to physical addresses so they don't 620a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell * potentially conflict with the chip addresses used as mmap offsets. 630a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell * It doesn't really matter what mmap offset we use as long as we can 640a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell * interpret it correctly. 650a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell */ 660a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbellstatic u64 cvt_kvaddr(void *p) 670a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell{ 680a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell struct page *page; 690a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell u64 paddr = 0; 700a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell 710a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell page = vmalloc_to_page(p); 720a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell if (page) 730a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell paddr = page_to_pfn(page) << PAGE_SHIFT; 740a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell 750a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell return paddr; 760a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell} 770a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell 789929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanstatic int ipath_get_base_info(struct file *fp, 797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan void __user *ubase, size_t ubase_size) 807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 819929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan struct ipath_portdata *pd = port_fp(fp); 827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret = 0; 837f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_base_info *kinfo = NULL; 847f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd = pd->port_dd; 859929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan unsigned subport_cnt; 869929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan int shared, master; 879929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan size_t sz; 889929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 899929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan subport_cnt = pd->port_subport_cnt; 909929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!subport_cnt) { 919929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan shared = 0; 929929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan master = 0; 939929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan subport_cnt = 1; 949929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } else { 959929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan shared = 1; 969929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan master = !subport_fp(fp); 979929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 999929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan sz = sizeof(*kinfo); 1009929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* If port sharing is not requested, allow the old size structure */ 1019929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!shared) 102c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage sz -= 7 * sizeof(u64); 1039929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (ubase_size < sz) { 1047f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(PROC, 1059929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan "Base size %zu, need %zu (version mismatch?)\n", 1069929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ubase_size, sz); 1077f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EINVAL; 1087f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 1097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 1107f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 1117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo = kzalloc(sizeof(*kinfo), GFP_KERNEL); 1127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (kinfo == NULL) { 1137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -ENOMEM; 1147f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 1157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 1167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 1177f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = dd->ipath_f_get_base_info(pd, kinfo); 1187f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret < 0) 1197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 1207f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 1217f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_rcvhdr_cnt = dd->ipath_rcvhdrcnt; 1227f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_rcvhdrent_size = dd->ipath_rcvhdrentsize; 1237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_tidegrcnt = dd->ipath_rcvegrcnt; 1247f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_rcv_egrbufsize = dd->ipath_rcvegrbufsize; 1257f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 1267f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * have to mmap whole thing 1277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 1287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_rcv_egrbuftotlen = 1297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_rcvegrbuf_chunks * pd->port_rcvegrbuf_size; 1307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_rcv_egrperchunk = pd->port_rcvegrbufs_perchunk; 1317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_rcv_egrchunksize = kinfo->spi_rcv_egrbuftotlen / 1327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_rcvegrbuf_chunks; 1339929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kinfo->spi_tidcnt = dd->ipath_rcvtidcnt / subport_cnt; 1349929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (master) 1359929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kinfo->spi_tidcnt += dd->ipath_rcvtidcnt % subport_cnt; 1367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 1377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * for this use, may be ipath_cfgports summed over all chips that 1387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * are are configured and present 1397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 1407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_nports = dd->ipath_cfgports; 1417f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* unit (chip/board) our port is on */ 1427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_unit = dd->ipath_unit; 1437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* for now, only a single page */ 1447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_tid_maxsize = PAGE_SIZE; 1457f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 1467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 1477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * Doing this per port, and based on the skip value, etc. This has 1487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * to be the actual buffer size, since the protocol code treats it 1497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * as an array. 1507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 1517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * These have to be set to user addresses in the user code via mmap. 1527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * These values are used on return to user code for the mmap target 1537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * addresses only. For 32 bit, same 44 bit address problem, so use 1547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * the physical address, not virtual. Before 2.6.11, using the 1557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * page_address() macro worked, but in 2.6.11, even that returns the 1567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * full 64 bit address (upper bits all 1's). So far, using the 1577f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * physical addresses (or chip offsets, for chip mapping) works, but 1589929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * no doubt some future kernel release will change that, and we'll be 1599929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * on to yet another method of dealing with this. 1607f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 1617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_rcvhdr_base = (u64) pd->port_rcvhdrq_phys; 1629929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kinfo->spi_rcvhdr_tailaddr = (u64) pd->port_rcvhdrqtailaddr_phys; 1637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_rcv_egrbufs = (u64) pd->port_rcvegr_phys; 1647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_pioavailaddr = (u64) dd->ipath_pioavailregs_phys; 1657f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_status = (u64) kinfo->spi_pioavailaddr + 1667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (void *) dd->ipath_statusp - 1677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (void *) dd->ipath_pioavailregs_dma; 1689929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!shared) { 1699929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kinfo->spi_piocnt = dd->ipath_pbufsport; 1709929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kinfo->spi_piobufbase = (u64) pd->port_piobufs; 1719929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kinfo->__spi_uregbase = (u64) dd->ipath_uregbase + 1729929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dd->ipath_palign * pd->port_port; 1739929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } else if (master) { 1749929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kinfo->spi_piocnt = (dd->ipath_pbufsport / subport_cnt) + 1759929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan (dd->ipath_pbufsport % subport_cnt); 1769929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* Master's PIO buffers are after all the slave's */ 1779929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kinfo->spi_piobufbase = (u64) pd->port_piobufs + 1789929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dd->ipath_palign * 1799929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan (dd->ipath_pbufsport - kinfo->spi_piocnt); 1809929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } else { 1819929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan unsigned slave = subport_fp(fp) - 1; 1827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 1839929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kinfo->spi_piocnt = dd->ipath_pbufsport / subport_cnt; 1849929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kinfo->spi_piobufbase = (u64) pd->port_piobufs + 1859929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dd->ipath_palign * kinfo->spi_piocnt * slave; 186c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage } 187c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage if (shared) { 188c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage kinfo->spi_port_uregbase = (u64) dd->ipath_uregbase + 189c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage dd->ipath_palign * pd->port_port; 190c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage kinfo->spi_port_rcvegrbuf = kinfo->spi_rcv_egrbufs; 191c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage kinfo->spi_port_rcvhdr_base = kinfo->spi_rcvhdr_base; 192c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage kinfo->spi_port_rcvhdr_tailaddr = kinfo->spi_rcvhdr_tailaddr; 193c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage 1940a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell kinfo->__spi_uregbase = cvt_kvaddr(pd->subport_uregbase + 195c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage PAGE_SIZE * subport_fp(fp)); 1969929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 1970a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell kinfo->spi_rcvhdr_base = cvt_kvaddr(pd->subport_rcvhdr_base + 198c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage pd->port_rcvhdrq_size * subport_fp(fp)); 199947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell kinfo->spi_rcvhdr_tailaddr = 0; 2000a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell kinfo->spi_rcv_egrbufs = cvt_kvaddr(pd->subport_rcvegrbuf + 201c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage pd->port_rcvegrbuf_chunks * pd->port_rcvegrbuf_size * 202c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage subport_fp(fp)); 203c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage 204c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage kinfo->spi_subport_uregbase = 205c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage cvt_kvaddr(pd->subport_uregbase); 206c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage kinfo->spi_subport_rcvegrbuf = 207c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage cvt_kvaddr(pd->subport_rcvegrbuf); 208c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage kinfo->spi_subport_rcvhdr_base = 209c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage cvt_kvaddr(pd->subport_rcvhdr_base); 210c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage ipath_cdbg(PROC, "port %u flags %x %llx %llx %llx\n", 211c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage kinfo->spi_port, kinfo->spi_runtime_flags, 212c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage (unsigned long long) kinfo->spi_subport_uregbase, 213c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage (unsigned long long) kinfo->spi_subport_rcvegrbuf, 214c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage (unsigned long long) kinfo->spi_subport_rcvhdr_base); 2159929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 2169929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 2179929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kinfo->spi_pioindex = (kinfo->spi_piobufbase - dd->ipath_piobufbase) / 2189929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dd->ipath_palign; 2197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_pioalign = dd->ipath_palign; 2207f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 2217f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_qpair = IPATH_KD_QP; 2227f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_piosize = dd->ipath_ibmaxlen; 2237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_mtu = dd->ipath_ibmaxlen; /* maxlen, not ibmtu */ 2247f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_port = pd->port_port; 2259929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kinfo->spi_subport = subport_fp(fp); 226eaf6733bc176742fb08def2269441684e963c275Bryan O'Sullivan kinfo->spi_sw_version = IPATH_KERN_SWVERSION; 2277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kinfo->spi_hw_version = dd->ipath_revision; 2287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 2299929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (master) { 2309929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kinfo->spi_runtime_flags |= IPATH_RUNTIME_MASTER; 2319929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 2329929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 233c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage sz = (ubase_size < sizeof(*kinfo)) ? ubase_size : sizeof(*kinfo); 234c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage if (copy_to_user(ubase, kinfo, sz)) 2357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EFAULT; 2367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 2377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanbail: 2387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kfree(kinfo); 2397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 2407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 2417f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 2427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan/** 2437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * ipath_tid_update - update a port TID 2447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * @pd: the port 2459929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * @fp: the ipath device file 2467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * @ti: the TID information 2477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 2487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * The new implementation as of Oct 2004 is that the driver assigns 2497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * the tid and returns it to the caller. To make it easier to 2507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * catch bugs, and to reduce search time, we keep a cursor for 2517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * each port, walking the shadow tid array to find one that's not 2527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * in use. 2537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 2547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * For now, if we can't allocate the full list, we fail, although 2557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * in the long run, we'll allocate as many as we can, and the 2567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * caller will deal with that by trying the remaining pages later. 2577f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * That means that when we fail, we have to mark the tids as not in 2587f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * use again, in our shadow copy. 2597f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 2607f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * It's up to the caller to free the tids when they are done. 2617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * We'll unlock the pages as they free them. 2627f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 2637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * Also, right now we are locking one page at a time, but since 2647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * the intended use of this routine is for a single group of 2657f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * virtually contiguous pages, that should change to improve 2667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * performance. 2677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 2689929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanstatic int ipath_tid_update(struct ipath_portdata *pd, struct file *fp, 2697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan const struct ipath_tid_info *ti) 2707f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 2717f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret = 0, ntids; 2729929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan u32 tid, porttid, cnt, i, tidcnt, tidoff; 2737f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan u16 *tidlist; 2747f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd = pd->port_dd; 2757f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan u64 physaddr; 2767f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan unsigned long vaddr; 2777f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan u64 __iomem *tidbase; 2787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan unsigned long tidmap[8]; 2797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct page **pagep = NULL; 2809929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan unsigned subport = subport_fp(fp); 2817f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 2827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!dd->ipath_pageshadow) { 2837f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -ENOMEM; 2847f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto done; 2857f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 2867f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 2877f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cnt = ti->tidcnt; 2887f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!cnt) { 2897f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("After copyin, tidcnt 0, tidlist %llx\n", 2907f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (unsigned long long) ti->tidlist); 2917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 2927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * Should we treat as success? likely a bug 2937f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 2947f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EFAULT; 2957f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto done; 2967f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 2979929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan porttid = pd->port_port * dd->ipath_rcvtidcnt; 2989929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!pd->port_subport_cnt) { 2999929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tidcnt = dd->ipath_rcvtidcnt; 3009929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tid = pd->port_tidcursor; 3019929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tidoff = 0; 3029929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } else if (!subport) { 3039929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tidcnt = (dd->ipath_rcvtidcnt / pd->port_subport_cnt) + 3049929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan (dd->ipath_rcvtidcnt % pd->port_subport_cnt); 3059929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tidoff = dd->ipath_rcvtidcnt - tidcnt; 3069929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan porttid += tidoff; 3079929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tid = tidcursor_fp(fp); 3089929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } else { 3099929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tidcnt = dd->ipath_rcvtidcnt / pd->port_subport_cnt; 3109929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tidoff = tidcnt * (subport - 1); 3119929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan porttid += tidoff; 3129929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tid = tidcursor_fp(fp); 3139929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 3149929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (cnt > tidcnt) { 3157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* make sure it all fits in port_tid_pg_list */ 3167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dev_info(&dd->pcidev->dev, "Process tried to allocate %u " 3177f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "TIDs, only trying max (%u)\n", cnt, tidcnt); 3187f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cnt = tidcnt; 3197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 3209929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pagep = &((struct page **) pd->port_tid_pg_list)[tidoff]; 3219929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tidlist = &((u16 *) &pagep[dd->ipath_rcvtidcnt])[tidoff]; 3227f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 3237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan memset(tidmap, 0, sizeof(tidmap)); 3247f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* before decrement; chip actual # */ 3257f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ntids = tidcnt; 3267f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan tidbase = (u64 __iomem *) (((char __iomem *) dd->ipath_kregbase) + 3277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_rcvtidbase + 3287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan porttid * sizeof(*tidbase)); 3297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 3307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "Port%u %u tids, cursor %u, tidbase %p\n", 3317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_port, cnt, tid, tidbase); 3327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 3337f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* virtual address of first page in transfer */ 3347f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan vaddr = ti->tidvaddr; 3357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!access_ok(VERIFY_WRITE, (void __user *) vaddr, 3367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cnt * PAGE_SIZE)) { 3377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("Fail vaddr %p, %u pages, !access_ok\n", 3387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (void *)vaddr, cnt); 3397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EFAULT; 3407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto done; 3417f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 3427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = ipath_get_user_pages(vaddr, cnt, pagep); 3437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret) { 3447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret == -EBUSY) { 3457f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("Failed to lock addr %p, %u pages " 3467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "(already locked)\n", 3477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (void *) vaddr, cnt); 3487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 3497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * for now, continue, and see what happens but with 3507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * the new implementation, this should never happen, 3517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * unless perhaps the user has mpin'ed the pages 3527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * themselves (something we need to test) 3537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 3547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = 0; 3557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } else { 3567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dev_info(&dd->pcidev->dev, 3577f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "Failed to lock addr %p, %u pages: " 3587f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "errno %d\n", (void *) vaddr, cnt, -ret); 3597f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto done; 3607f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 3617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 3627f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (i = 0; i < cnt; i++, vaddr += PAGE_SIZE) { 3637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (; ntids--; tid++) { 3647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (tid == tidcnt) 3657f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan tid = 0; 3667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!dd->ipath_pageshadow[porttid + tid]) 3677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan break; 3687f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 3697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ntids < 0) { 3707f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 3717f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * oops, wrapped all the way through their TIDs, 3727f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * and didn't have enough free; see comments at 3737f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * start of routine 3747f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 3757f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("Not enough free TIDs for %u pages " 3767f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "(index %d), failing\n", cnt, i); 3777f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan i--; /* last tidlist[i] not filled in */ 3787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -ENOMEM; 3797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan break; 3807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 3819929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tidlist[i] = tid + tidoff; 3827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "Updating idx %u to TID %u, " 3839929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan "vaddr %lx\n", i, tid + tidoff, vaddr); 3847f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* we "know" system pages and TID pages are same size */ 3857f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_pageshadow[porttid + tid] = pagep[i]; 3861fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan dd->ipath_physshadow[porttid + tid] = ipath_map_page( 3871fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan dd->pcidev, pagep[i], 0, PAGE_SIZE, 3881fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan PCI_DMA_FROMDEVICE); 3897f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 3907f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * don't need atomic or it's overhead 3917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 3927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan __set_bit(tid, tidmap); 3931fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan physaddr = dd->ipath_physshadow[porttid + tid]; 3947f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_stats.sps_pagelocks++; 3957f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, 3967f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "TID %u, vaddr %lx, physaddr %llx pgp %p\n", 3977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan tid, vaddr, (unsigned long long) physaddr, 3987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pagep[i]); 3997f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_f_put_tid(dd, &tidbase[tid], 1, physaddr); 4007f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 4017f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * don't check this tid in ipath_portshadow, since we 4027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * just filled it in; start with the next one. 4037f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 4047f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan tid++; 4057f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 4067f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 4077f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret) { 4087f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan u32 limit; 4097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cleanup: 4107f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* jump here if copy out of updated info failed... */ 4117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("After failure (ret=%d), undo %d of %d entries\n", 4127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan -ret, i, cnt); 4137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* same code that's in ipath_free_tid() */ 4147f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan limit = sizeof(tidmap) * BITS_PER_BYTE; 4157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (limit > tidcnt) 4167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* just in case size changes in future */ 4177f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan limit = tidcnt; 4187f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan tid = find_first_bit((const unsigned long *)tidmap, limit); 4197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (; tid < limit; tid++) { 4207f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!test_bit(tid, tidmap)) 4217f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan continue; 4227f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (dd->ipath_pageshadow[porttid + tid]) { 4237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "Freeing TID %u\n", 4247f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan tid); 4257f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_f_put_tid(dd, &tidbase[tid], 1, 4267f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_tidinvalid); 4271fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan pci_unmap_page(dd->pcidev, 4281fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan dd->ipath_physshadow[porttid + tid], 4291fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan PAGE_SIZE, PCI_DMA_FROMDEVICE); 4307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_pageshadow[porttid + tid] = NULL; 4317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_stats.sps_pageunlocks++; 4327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 4337f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 4347f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_release_user_pages(pagep, cnt); 4357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } else { 4367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 4377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * Copy the updated array, with ipath_tid's filled in, back 4387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * to user. Since we did the copy in already, this "should 4397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * never fail" If it does, we have to clean up... 4407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 4417f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (copy_to_user((void __user *) 4427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (unsigned long) ti->tidlist, 4437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan tidlist, cnt * sizeof(*tidlist))) { 4447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EFAULT; 4457f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto cleanup; 4467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 4477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (copy_to_user((void __user *) (unsigned long) ti->tidmap, 4487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan tidmap, sizeof tidmap)) { 4497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EFAULT; 4507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto cleanup; 4517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 4527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (tid == tidcnt) 4537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan tid = 0; 4549929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!pd->port_subport_cnt) 4559929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_tidcursor = tid; 4569929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan else 4579929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tidcursor_fp(fp) = tid; 4587f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 4597f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 4607f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivandone: 4617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret) 4627f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("Failed to map %u TID pages, failing with %d\n", 4637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ti->tidcnt, -ret); 4647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 4657f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 4667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 4677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan/** 4687f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * ipath_tid_free - free a port TID 4697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * @pd: the port 4709929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * @subport: the subport 4717f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * @ti: the TID info 4727f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 4737f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * right now we are unlocking one page at a time, but since 4747f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * the intended use of this routine is for a single group of 4757f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * virtually contiguous pages, that should change to improve 4767f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * performance. We check that the TID is in range for this port 4777f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * but otherwise don't check validity; if user has an error and 4787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * frees the wrong tid, it's only their own data that can thereby 4797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * be corrupted. We do check that the TID was in use, for sanity 4807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * We always use our idea of the saved address, not the address that 4817f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * they pass in to us. 4827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 4837f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 4849929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanstatic int ipath_tid_free(struct ipath_portdata *pd, unsigned subport, 4857f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan const struct ipath_tid_info *ti) 4867f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 4877f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret = 0; 4887f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan u32 tid, porttid, cnt, limit, tidcnt; 4897f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd = pd->port_dd; 4907f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan u64 __iomem *tidbase; 4917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan unsigned long tidmap[8]; 4927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 4937f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!dd->ipath_pageshadow) { 4947f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -ENOMEM; 4957f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto done; 4967f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 4977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 4987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (copy_from_user(tidmap, (void __user *)(unsigned long)ti->tidmap, 4997f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan sizeof tidmap)) { 5007f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EFAULT; 5017f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto done; 5027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 5037f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 5047f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan porttid = pd->port_port * dd->ipath_rcvtidcnt; 5059929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!pd->port_subport_cnt) 5069929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tidcnt = dd->ipath_rcvtidcnt; 5079929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan else if (!subport) { 5089929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tidcnt = (dd->ipath_rcvtidcnt / pd->port_subport_cnt) + 5099929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan (dd->ipath_rcvtidcnt % pd->port_subport_cnt); 5109929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan porttid += dd->ipath_rcvtidcnt - tidcnt; 5119929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } else { 5129929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tidcnt = dd->ipath_rcvtidcnt / pd->port_subport_cnt; 5139929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan porttid += tidcnt * (subport - 1); 5149929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 5157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan tidbase = (u64 __iomem *) ((char __iomem *)(dd->ipath_kregbase) + 5167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_rcvtidbase + 5177f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan porttid * sizeof(*tidbase)); 5187f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 5197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan limit = sizeof(tidmap) * BITS_PER_BYTE; 5207f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (limit > tidcnt) 5217f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* just in case size changes in future */ 5227f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan limit = tidcnt; 5237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan tid = find_first_bit(tidmap, limit); 5247f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "Port%u free %u tids; first bit (max=%d) " 5257f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "set is %d, porttid %u\n", pd->port_port, ti->tidcnt, 5267f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan limit, tid, porttid); 5277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (cnt = 0; tid < limit; tid++) { 5287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 5297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * small optimization; if we detect a run of 3 or so without 5307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * any set, use find_first_bit again. That's mainly to 5317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * accelerate the case where we wrapped, so we have some at 5327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * the beginning, and some at the end, and a big gap 5337f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * in the middle. 5347f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 5357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!test_bit(tid, tidmap)) 5367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan continue; 5377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cnt++; 5387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (dd->ipath_pageshadow[porttid + tid]) { 5397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "PID %u freeing TID %u\n", 5407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_pid, tid); 5417f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_f_put_tid(dd, &tidbase[tid], 1, 5427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_tidinvalid); 5431fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan pci_unmap_page(dd->pcidev, 5441fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan dd->ipath_physshadow[porttid + tid], 5451fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan PAGE_SIZE, PCI_DMA_FROMDEVICE); 5467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_release_user_pages( 5477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan &dd->ipath_pageshadow[porttid + tid], 1); 5487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_pageshadow[porttid + tid] = NULL; 5497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_stats.sps_pageunlocks++; 5507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } else 5517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("Unused tid %u, ignoring\n", tid); 5527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 5537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (cnt != ti->tidcnt) 5547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("passed in tidcnt %d, only %d bits set in map\n", 5557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ti->tidcnt, cnt); 5567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivandone: 5577f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret) 5587f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("Failed to unmap %u TID pages, failing with %d\n", 5597f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ti->tidcnt, -ret); 5607f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 5617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 5627f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 5637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan/** 5647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * ipath_set_part_key - set a partition key 5657f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * @pd: the port 5667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * @key: the key 5677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 5687f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * We can have up to 4 active at a time (other than the default, which is 5697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * always allowed). This is somewhat tricky, since multiple ports may set 5707f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * the same key, so we reference count them, and clean up at exit. All 4 5717f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * partition keys are packed into a single infinipath register. It's an 5727f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * error for a process to set the same pkey multiple times. We provide no 5737f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * mechanism to de-allocate a pkey at this time, we may eventually need to 5747f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * do that. I've used the atomic operations, and no locking, and only make 5757f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * a single pass through what's available. This should be more than 5767f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * adequate for some time. I'll think about spinlocks or the like if and as 5777f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * it's necessary. 5787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 5797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic int ipath_set_part_key(struct ipath_portdata *pd, u16 key) 5807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 5817f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd = pd->port_dd; 5827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int i, any = 0, pidx = -1; 5837f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan u16 lkey = key & 0x7FFF; 5847f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret; 5857f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 58627b678dd04a636f2c351816f4b3042c8815d4e9dBryan O'Sullivan if (lkey == (IPATH_DEFAULT_P_KEY & 0x7FFF)) { 5877f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* nothing to do; this key always valid */ 5887f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = 0; 5897f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 5907f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 5917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 5927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "p%u try to set pkey %hx, current keys " 5937f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "%hx:%x %hx:%x %hx:%x %hx:%x\n", 5947f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_port, key, dd->ipath_pkeys[0], 5957f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan atomic_read(&dd->ipath_pkeyrefs[0]), dd->ipath_pkeys[1], 5967f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan atomic_read(&dd->ipath_pkeyrefs[1]), dd->ipath_pkeys[2], 5977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan atomic_read(&dd->ipath_pkeyrefs[2]), dd->ipath_pkeys[3], 5987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan atomic_read(&dd->ipath_pkeyrefs[3])); 5997f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 6007f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!lkey) { 6017f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(PROC, "p%u tries to set key 0, not allowed\n", 6027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_port); 6037f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EINVAL; 6047f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 6057f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 6067f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 6077f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 6087f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * Set the full membership bit, because it has to be 6097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * set in the register or the packet, and it seems 6107f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * cleaner to set in the register than to force all 6117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * callers to set it. (see bug 4331) 6127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 6137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan key |= 0x8000; 6147f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 6157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) { 6167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!pd->port_pkeys[i] && pidx == -1) 6177f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pidx = i; 6187f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (pd->port_pkeys[i] == key) { 6197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "p%u tries to set same pkey " 6207f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "(%x) more than once\n", 6217f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_port, key); 6227f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EEXIST; 6237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 6247f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 6257f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 6267f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (pidx == -1) { 6277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("All pkeys for port %u already in use, " 6287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "can't set %x\n", pd->port_port, key); 6297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EBUSY; 6307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 6317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 6327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (any = i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { 6337f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!dd->ipath_pkeys[i]) { 6347f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan any++; 6357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan continue; 6367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 6377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (dd->ipath_pkeys[i] == key) { 6387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan atomic_t *pkrefs = &dd->ipath_pkeyrefs[i]; 6397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 6407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (atomic_inc_return(pkrefs) > 1) { 6417f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_pkeys[pidx] = key; 6427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "p%u set key %x " 6437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "matches #%d, count now %d\n", 6447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_port, key, i, 6457f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan atomic_read(pkrefs)); 6467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = 0; 6477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 6487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } else { 6497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 6507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * lost race, decrement count, catch below 6517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 6527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan atomic_dec(pkrefs); 6537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "Lost race, count was " 6547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "0, after dec, it's %d\n", 6557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan atomic_read(pkrefs)); 6567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan any++; 6577f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 6587f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 6597f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if ((dd->ipath_pkeys[i] & 0x7FFF) == lkey) { 6607f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 6617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * It makes no sense to have both the limited and 6627f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * full membership PKEY set at the same time since 6637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * the unlimited one will disable the limited one. 6647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 6657f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EEXIST; 6667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 6677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 6687f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 6697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!any) { 6707f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("port %u, all pkeys already in use, " 6717f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "can't set %x\n", pd->port_port, key); 6727f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EBUSY; 6737f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 6747f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 6757f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (any = i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) { 6767f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!dd->ipath_pkeys[i] && 6777f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan atomic_inc_return(&dd->ipath_pkeyrefs[i]) == 1) { 6787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan u64 pkey; 6797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 6807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* for ipathstats, etc. */ 6817f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_stats.sps_pkeys[i] = lkey; 6827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_pkeys[pidx] = dd->ipath_pkeys[i] = key; 6837f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pkey = 6847f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (u64) dd->ipath_pkeys[0] | 6857f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ((u64) dd->ipath_pkeys[1] << 16) | 6867f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ((u64) dd->ipath_pkeys[2] << 32) | 6877f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ((u64) dd->ipath_pkeys[3] << 48); 6887f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(PROC, "p%u set key %x in #%d, " 6897f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "portidx %d, new pkey reg %llx\n", 6907f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_port, key, i, pidx, 6917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (unsigned long long) pkey); 6927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_write_kreg( 6937f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd, dd->ipath_kregs->kr_partitionkey, pkey); 6947f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 6957f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = 0; 6967f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 6977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 6987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 6997f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("port %u, all pkeys already in use 2nd pass, " 7007f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "can't set %x\n", pd->port_port, key); 7017f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EBUSY; 7027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 7037f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanbail: 7047f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 7057f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 7067f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 7077f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan/** 7087f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * ipath_manage_rcvq - manage a port's receive queue 7097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * @pd: the port 7109929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * @subport: the subport 7117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * @start_stop: action to carry out 7127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 7137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * start_stop == 0 disables receive on the port, for use in queue 7147f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * overflow conditions. start_stop==1 re-enables, to be used to 7157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * re-init the software copy of the head register 7167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 7179929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanstatic int ipath_manage_rcvq(struct ipath_portdata *pd, unsigned subport, 7189929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan int start_stop) 7197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 7207f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd = pd->port_dd; 7217f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 7229929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ipath_cdbg(PROC, "%sabling rcv for unit %u port %u:%u\n", 7237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan start_stop ? "en" : "dis", dd->ipath_unit, 7249929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_port, subport); 7259929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (subport) 7269929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 7277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* atomically clear receive enable port. */ 7287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (start_stop) { 7297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 7307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * On enable, force in-memory copy of the tail register to 7317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 0, so that protocol code doesn't have to worry about 7327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * whether or not the chip has yet updated the in-memory 7337f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * copy or not on return from the system call. The chip 7347f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * always resets it's tail register back to 0 on a 7357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * transition from disabled to enabled. This could cause a 7367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * problem if software was broken, and did the enable w/o 7377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * the disable, but eventually the in-memory copy will be 7387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * updated and correct itself, even in the face of software 7397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * bugs. 7407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 7411fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan *(volatile u64 *)pd->port_rcvhdrtail_kvaddr = 0; 7427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan set_bit(INFINIPATH_R_PORTENABLE_SHIFT + pd->port_port, 7437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan &dd->ipath_rcvctrl); 7447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } else 7457f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan clear_bit(INFINIPATH_R_PORTENABLE_SHIFT + pd->port_port, 7467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan &dd->ipath_rcvctrl); 7477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, 7487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_rcvctrl); 7497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* now be sure chip saw it before we return */ 75044f8e3f3f7d8e61b4aafced278403955fe18ad88Roland Dreier ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); 7517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (start_stop) { 7527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 7537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * And try to be sure that tail reg update has happened too. 7547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * This should in theory interlock with the RXE changes to 7557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * the tail register. Don't assign it to the tail register 7567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * in memory copy, since we could overwrite an update by the 7577f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * chip if we did. 7587f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 75944f8e3f3f7d8e61b4aafced278403955fe18ad88Roland Dreier ipath_read_ureg32(dd, ur_rcvhdrtail, pd->port_port); 7607f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 7617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* always; new head should be equal to new tail; see above */ 7629929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanbail: 7637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return 0; 7647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 7657f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 7667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic void ipath_clean_part_key(struct ipath_portdata *pd, 7677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd) 7687f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 7697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int i, j, pchanged = 0; 7707f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan u64 oldpkey; 7717f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 7727f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* for debugging only */ 7737f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan oldpkey = (u64) dd->ipath_pkeys[0] | 7747f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ((u64) dd->ipath_pkeys[1] << 16) | 7757f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ((u64) dd->ipath_pkeys[2] << 32) | 7767f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ((u64) dd->ipath_pkeys[3] << 48); 7777f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 7787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) { 7797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!pd->port_pkeys[i]) 7807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan continue; 7817f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "look for key[%d] %hx in pkeys\n", i, 7827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_pkeys[i]); 7837f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (j = 0; j < ARRAY_SIZE(dd->ipath_pkeys); j++) { 7847f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* check for match independent of the global bit */ 7857f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if ((dd->ipath_pkeys[j] & 0x7fff) != 7867f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (pd->port_pkeys[i] & 0x7fff)) 7877f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan continue; 7887f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (atomic_dec_and_test(&dd->ipath_pkeyrefs[j])) { 7897f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "p%u clear key " 7907f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "%x matches #%d\n", 7917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_port, 7927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_pkeys[i], j); 7937f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_stats.sps_pkeys[j] = 7947f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_pkeys[j] = 0; 7957f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pchanged++; 7967f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 7977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan else ipath_cdbg( 7987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan VERBOSE, "p%u key %x matches #%d, " 7997f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "but ref still %d\n", pd->port_port, 8007f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_pkeys[i], j, 8017f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan atomic_read(&dd->ipath_pkeyrefs[j])); 8027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan break; 8037f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 8047f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_pkeys[i] = 0; 8057f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 8067f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (pchanged) { 8077f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan u64 pkey = (u64) dd->ipath_pkeys[0] | 8087f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ((u64) dd->ipath_pkeys[1] << 16) | 8097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ((u64) dd->ipath_pkeys[2] << 32) | 8107f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ((u64) dd->ipath_pkeys[3] << 48); 8117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "p%u old pkey reg %llx, " 8127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "new pkey reg %llx\n", pd->port_port, 8137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (unsigned long long) oldpkey, 8147f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (unsigned long long) pkey); 8157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_write_kreg(dd, dd->ipath_kregs->kr_partitionkey, 8167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pkey); 8177f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 8187f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 8197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 8209929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan/* 8219929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * Initialize the port data with the receive buffer sizes 8229929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * so this can be done while the master port is locked. 8239929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * Otherwise, there is a race with a slave opening the port 8249929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * and seeing these fields uninitialized. 8259929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan */ 8269929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanstatic void init_user_egr_sizes(struct ipath_portdata *pd) 8279929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan{ 8289929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan struct ipath_devdata *dd = pd->port_dd; 8299929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan unsigned egrperchunk, egrcnt, size; 8309929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 8319929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* 8329929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * to avoid wasting a lot of memory, we allocate 32KB chunks of 8339929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * physically contiguous memory, advance through it until used up 8349929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * and then allocate more. Of course, we need memory to store those 8359929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * extra pointers, now. Started out with 256KB, but under heavy 8369929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * memory pressure (creating large files and then copying them over 8379929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * NFS while doing lots of MPI jobs), we hit some allocation 8389929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * failures, even though we can sleep... (2.6.10) Still get 8399929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * failures at 64K. 32K is the lowest we can go without wasting 8409929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * additional memory. 8419929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan */ 8429929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan size = 0x8000; 8439929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan egrperchunk = size / dd->ipath_rcvegrbufsize; 8449929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan egrcnt = dd->ipath_rcvegrcnt; 8459929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_rcvegrbuf_chunks = (egrcnt + egrperchunk - 1) / egrperchunk; 8469929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_rcvegrbufs_perchunk = egrperchunk; 8479929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_rcvegrbuf_size = size; 8489929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan} 8499929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 8507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan/** 8517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * ipath_create_user_egr - allocate eager TID buffers 8527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * @pd: the port to allocate TID buffers for 8537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 8547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * This routine is now quite different for user and kernel, because 8557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * the kernel uses skb's, for the accelerated network performance 8567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * This is the user port version 8577f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 8587f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * Allocate the eager TID buffers and program them into infinipath 8597f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * They are no longer completely contiguous, we do multiple allocation 8607f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * calls. 8617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 8627f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic int ipath_create_user_egr(struct ipath_portdata *pd) 8637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 8647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd = pd->port_dd; 8659929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan unsigned e, egrcnt, egrperchunk, chunk, egrsize, egroff; 8667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan size_t size; 8677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret; 8680ed9a4a0b6df0548f9ccadb62add2c0155d5262cBryan O'Sullivan gfp_t gfp_flags; 8690ed9a4a0b6df0548f9ccadb62add2c0155d5262cBryan O'Sullivan 8700ed9a4a0b6df0548f9ccadb62add2c0155d5262cBryan O'Sullivan /* 8710ed9a4a0b6df0548f9ccadb62add2c0155d5262cBryan O'Sullivan * GFP_USER, but without GFP_FS, so buffer cache can be 8720ed9a4a0b6df0548f9ccadb62add2c0155d5262cBryan O'Sullivan * coalesced (we hope); otherwise, even at order 4, 8730ed9a4a0b6df0548f9ccadb62add2c0155d5262cBryan O'Sullivan * heavy filesystem activity makes these fail, and we can 8740ed9a4a0b6df0548f9ccadb62add2c0155d5262cBryan O'Sullivan * use compound pages. 8750ed9a4a0b6df0548f9ccadb62add2c0155d5262cBryan O'Sullivan */ 8760ed9a4a0b6df0548f9ccadb62add2c0155d5262cBryan O'Sullivan gfp_flags = __GFP_WAIT | __GFP_IO | __GFP_COMP; 8777f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 8787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan egrcnt = dd->ipath_rcvegrcnt; 8797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* TID number offset for this port */ 8807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan egroff = pd->port_port * egrcnt; 8817f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan egrsize = dd->ipath_rcvegrbufsize; 8827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "Allocating %d egr buffers, at egrtid " 8837f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "offset %x, egrsize %u\n", egrcnt, egroff, egrsize); 8847f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 8859929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan chunk = pd->port_rcvegrbuf_chunks; 8869929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan egrperchunk = pd->port_rcvegrbufs_perchunk; 8879929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan size = pd->port_rcvegrbuf_size; 8889929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_rcvegrbuf = kmalloc(chunk * sizeof(pd->port_rcvegrbuf[0]), 8899929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan GFP_KERNEL); 8907f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!pd->port_rcvegrbuf) { 8917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -ENOMEM; 8927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 8937f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 8947f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_rcvegrbuf_phys = 8959929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kmalloc(chunk * sizeof(pd->port_rcvegrbuf_phys[0]), 8969929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan GFP_KERNEL); 8977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!pd->port_rcvegrbuf_phys) { 8987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -ENOMEM; 8997f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail_rcvegrbuf; 9007f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 9017f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (e = 0; e < pd->port_rcvegrbuf_chunks; e++) { 9027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 9037f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_rcvegrbuf[e] = dma_alloc_coherent( 9047f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan &dd->pcidev->dev, size, &pd->port_rcvegrbuf_phys[e], 9057f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan gfp_flags); 9067f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 9077f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!pd->port_rcvegrbuf[e]) { 9087f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -ENOMEM; 9097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail_rcvegrbuf_phys; 9107f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 9117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 9127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 9137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_rcvegr_phys = pd->port_rcvegrbuf_phys[0]; 9147f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 9157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (e = chunk = 0; chunk < pd->port_rcvegrbuf_chunks; chunk++) { 9167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dma_addr_t pa = pd->port_rcvegrbuf_phys[chunk]; 9177f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan unsigned i; 9187f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 9197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (i = 0; e < egrcnt && i < egrperchunk; e++, i++) { 9207f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_f_put_tid(dd, e + egroff + 9217f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (u64 __iomem *) 9227f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ((char __iomem *) 9237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_kregbase + 9247f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_rcvegrbase), 0, pa); 9257f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pa += egrsize; 9267f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 9277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cond_resched(); /* don't hog the cpu */ 9287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 9297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 9307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = 0; 9317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 9327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 9337f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanbail_rcvegrbuf_phys: 9347f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (e = 0; e < pd->port_rcvegrbuf_chunks && 935f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan pd->port_rcvegrbuf[e]; e++) { 9367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dma_free_coherent(&dd->pcidev->dev, size, 9377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_rcvegrbuf[e], 9387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_rcvegrbuf_phys[e]); 9397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 940f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan } 9419929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kfree(pd->port_rcvegrbuf_phys); 9427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_rcvegrbuf_phys = NULL; 9437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanbail_rcvegrbuf: 9449929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kfree(pd->port_rcvegrbuf); 9457f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_rcvegrbuf = NULL; 9467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanbail: 9477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 9487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 9497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 950f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan 951f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan/* common code for the mappings on dma_alloc_coherent mem */ 952f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivanstatic int ipath_mmap_mem(struct vm_area_struct *vma, 9531fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan struct ipath_portdata *pd, unsigned len, int write_ok, 9541fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan void *kvaddr, char *what) 955f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan{ 956f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan struct ipath_devdata *dd = pd->port_dd; 9571fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan unsigned long pfn; 958f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan int ret; 959f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan 960f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan if ((vma->vm_end - vma->vm_start) > len) { 961f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan dev_info(&dd->pcidev->dev, 962f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan "FAIL on %s: len %lx > %x\n", what, 963f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan vma->vm_end - vma->vm_start, len); 964f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan ret = -EFAULT; 965f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan goto bail; 966f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan } 967f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan 968f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan if (!write_ok) { 969f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan if (vma->vm_flags & VM_WRITE) { 970f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan dev_info(&dd->pcidev->dev, 971f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan "%s must be mapped readonly\n", what); 972f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan ret = -EPERM; 973f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan goto bail; 974f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan } 975f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan 976f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan /* don't allow them to later change with mprotect */ 977f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan vma->vm_flags &= ~VM_MAYWRITE; 978f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan } 979f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan 9801fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan pfn = virt_to_phys(kvaddr) >> PAGE_SHIFT; 981f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan ret = remap_pfn_range(vma, vma->vm_start, pfn, 982f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan len, vma->vm_page_prot); 983f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan if (ret) 9841fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan dev_info(&dd->pcidev->dev, "%s port%u mmap of %lx, %x " 9851fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan "bytes r%c failed: %d\n", what, pd->port_port, 9861fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan pfn, len, write_ok?'w':'o', ret); 987f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan else 9881fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan ipath_cdbg(VERBOSE, "%s port%u mmaped %lx, %x bytes " 9891fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan "r%c\n", what, pd->port_port, pfn, len, 9901fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan write_ok?'w':'o'); 991f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivanbail: 992f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan return ret; 993f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan} 994f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan 9957f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic int mmap_ureg(struct vm_area_struct *vma, struct ipath_devdata *dd, 9967f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan u64 ureg) 9977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 9987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan unsigned long phys; 9997f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret; 10007f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 1001f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan /* 1002f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan * This is real hardware, so use io_remap. This is the mechanism 1003f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan * for the user process to update the head registers for their port 1004f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan * in the chip. 1005f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan */ 10067f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if ((vma->vm_end - vma->vm_start) > PAGE_SIZE) { 10077f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dev_info(&dd->pcidev->dev, "FAIL mmap userreg: reqlen " 10087f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "%lx > PAGE\n", vma->vm_end - vma->vm_start); 10097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EFAULT; 10107f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } else { 10117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan phys = dd->ipath_physaddr + ureg; 10127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 10137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 10147f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND; 10157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = io_remap_pfn_range(vma, vma->vm_start, 10167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan phys >> PAGE_SHIFT, 10177f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan vma->vm_end - vma->vm_start, 10187f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan vma->vm_page_prot); 10197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 10207f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 10217f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 10227f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 10237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic int mmap_piobufs(struct vm_area_struct *vma, 10247f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd, 10259929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan struct ipath_portdata *pd, 10269929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan unsigned piobufs, unsigned piocnt) 10277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 10287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan unsigned long phys; 10297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret; 10307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 10317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 1032f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan * When we map the PIO buffers in the chip, we want to map them as 1033f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan * writeonly, no read possible. This prevents access to previous 1034f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan * process data, and catches users who might try to read the i/o 1035f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan * space due to a bug. 10367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 10379929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if ((vma->vm_end - vma->vm_start) > (piocnt * dd->ipath_palign)) { 10387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dev_info(&dd->pcidev->dev, "FAIL mmap piobufs: " 10397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "reqlen %lx > PAGE\n", 10407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan vma->vm_end - vma->vm_start); 10419929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -EINVAL; 10427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 10437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 10447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 10459929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan phys = dd->ipath_physaddr + piobufs; 1046f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan 10477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 1048f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan * Don't mark this as non-cached, or we don't get the 10497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * write combining behavior we want on the PIO buffers! 10507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 10517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 1052eb9dc6f48dc7537ce53163109625bd992150e0cfBryan O'Sullivan#if defined(__powerpc__) 1053eb9dc6f48dc7537ce53163109625bd992150e0cfBryan O'Sullivan /* There isn't a generic way to specify writethrough mappings */ 1054eb9dc6f48dc7537ce53163109625bd992150e0cfBryan O'Sullivan pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE; 1055eb9dc6f48dc7537ce53163109625bd992150e0cfBryan O'Sullivan pgprot_val(vma->vm_page_prot) |= _PAGE_WRITETHRU; 1056eb9dc6f48dc7537ce53163109625bd992150e0cfBryan O'Sullivan pgprot_val(vma->vm_page_prot) &= ~_PAGE_GUARDED; 1057eb9dc6f48dc7537ce53163109625bd992150e0cfBryan O'Sullivan#endif 1058eb9dc6f48dc7537ce53163109625bd992150e0cfBryan O'Sullivan 1059367fe711c5dc85dbc3265cf01e34d4d6fbd55f06Bryan O'Sullivan /* 1060367fe711c5dc85dbc3265cf01e34d4d6fbd55f06Bryan O'Sullivan * don't allow them to later change to readable with mprotect (for when 1061367fe711c5dc85dbc3265cf01e34d4d6fbd55f06Bryan O'Sullivan * not initially mapped readable, as is normally the case) 1062367fe711c5dc85dbc3265cf01e34d4d6fbd55f06Bryan O'Sullivan */ 1063f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan vma->vm_flags &= ~VM_MAYREAD; 10647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND; 10657f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 10667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = io_remap_pfn_range(vma, vma->vm_start, phys >> PAGE_SHIFT, 10677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan vma->vm_end - vma->vm_start, 10687f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan vma->vm_page_prot); 10697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanbail: 10707f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 10717f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 10727f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 10737f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic int mmap_rcvegrbufs(struct vm_area_struct *vma, 10747f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_portdata *pd) 10757f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 10767f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd = pd->port_dd; 10777f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan unsigned long start, size; 10787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan size_t total_size, i; 10791fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan unsigned long pfn; 10807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret; 10817f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 10827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan size = pd->port_rcvegrbuf_size; 10837f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan total_size = pd->port_rcvegrbuf_chunks * size; 10847f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if ((vma->vm_end - vma->vm_start) > total_size) { 10857f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dev_info(&dd->pcidev->dev, "FAIL on egr bufs: " 10867f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "reqlen %lx > actual %lx\n", 10877f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan vma->vm_end - vma->vm_start, 10887f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (unsigned long) total_size); 10899929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -EINVAL; 10907f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 10917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 10927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 10937f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (vma->vm_flags & VM_WRITE) { 10947f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dev_info(&dd->pcidev->dev, "Can't map eager buffers as " 10957f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "writable (flags=%lx)\n", vma->vm_flags); 10967f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EPERM; 10977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 10987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 1099f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan /* don't allow them to later change to writeable with mprotect */ 1100f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan vma->vm_flags &= ~VM_MAYWRITE; 11017f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 11027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan start = vma->vm_start; 11037f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 11047f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (i = 0; i < pd->port_rcvegrbuf_chunks; i++, start += size) { 11051fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan pfn = virt_to_phys(pd->port_rcvegrbuf[i]) >> PAGE_SHIFT; 11061fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan ret = remap_pfn_range(vma, start, pfn, size, 11071fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan vma->vm_page_prot); 11087f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret < 0) 11097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 11107f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 11117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = 0; 11127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 11137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanbail: 11147f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 11157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 11167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 11179929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan/* 11189929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * ipath_file_vma_nopage - handle a VMA page fault. 11199929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan */ 11209929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanstatic struct page *ipath_file_vma_nopage(struct vm_area_struct *vma, 11219929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan unsigned long address, int *type) 11229929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan{ 11239929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan unsigned long offset = address - vma->vm_start; 11249929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan struct page *page = NOPAGE_SIGBUS; 11259929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan void *pageptr; 11269929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 11279929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* 11289929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * Convert the vmalloc address into a struct page. 11299929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan */ 11309929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pageptr = (void *)(offset + (vma->vm_pgoff << PAGE_SHIFT)); 11319929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan page = vmalloc_to_page(pageptr); 11329929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!page) 11339929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto out; 11349929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 11359929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* Increment the reference count. */ 11369929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan get_page(page); 11379929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (type) 11389929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan *type = VM_FAULT_MINOR; 11399929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanout: 11409929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan return page; 11419929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan} 11429929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 11439929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanstatic struct vm_operations_struct ipath_file_vm_ops = { 11449929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan .nopage = ipath_file_vma_nopage, 11459929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan}; 11469929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 11479929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanstatic int mmap_kvaddr(struct vm_area_struct *vma, u64 pgaddr, 11489929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan struct ipath_portdata *pd, unsigned subport) 11499929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan{ 11509929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan unsigned long len; 11519929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan struct ipath_devdata *dd; 11529929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan void *addr; 11539929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan size_t size; 11540a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell int ret = 0; 11559929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 11569929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* If the port is not shared, all addresses should be physical */ 11570a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell if (!pd->port_subport_cnt) 11589929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 11599929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 11609929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dd = pd->port_dd; 11619929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan size = pd->port_rcvegrbuf_chunks * pd->port_rcvegrbuf_size; 11629929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 11639929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* 1164c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage * Each process has all the subport uregbase, rcvhdrq, and 1165c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage * rcvegrbufs mmapped - as an array for all the processes, 1166c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage * and also separately for this process. 11679929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan */ 1168c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage if (pgaddr == cvt_kvaddr(pd->subport_uregbase)) { 1169c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage addr = pd->subport_uregbase; 1170c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage size = PAGE_SIZE * pd->port_subport_cnt; 1171c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage } else if (pgaddr == cvt_kvaddr(pd->subport_rcvhdr_base)) { 1172c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage addr = pd->subport_rcvhdr_base; 1173c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage size = pd->port_rcvhdrq_size * pd->port_subport_cnt; 1174c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage } else if (pgaddr == cvt_kvaddr(pd->subport_rcvegrbuf)) { 1175c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage addr = pd->subport_rcvegrbuf; 1176c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage size *= pd->port_subport_cnt; 1177c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage } else if (pgaddr == cvt_kvaddr(pd->subport_uregbase + 1178c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage PAGE_SIZE * subport)) { 1179c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage addr = pd->subport_uregbase + PAGE_SIZE * subport; 1180c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage size = PAGE_SIZE; 1181c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage } else if (pgaddr == cvt_kvaddr(pd->subport_rcvhdr_base + 1182c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage pd->port_rcvhdrq_size * subport)) { 1183c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage addr = pd->subport_rcvhdr_base + 1184c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage pd->port_rcvhdrq_size * subport; 1185c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage size = pd->port_rcvhdrq_size; 1186c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage } else if (pgaddr == cvt_kvaddr(pd->subport_rcvegrbuf + 1187c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage size * subport)) { 1188c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage addr = pd->subport_rcvegrbuf + size * subport; 1189c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage /* rcvegrbufs are read-only on the slave */ 1190c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage if (vma->vm_flags & VM_WRITE) { 1191c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage dev_info(&dd->pcidev->dev, 1192c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage "Can't map eager buffers as " 1193c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage "writable (flags=%lx)\n", vma->vm_flags); 1194c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage ret = -EPERM; 1195c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage goto bail; 1196c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage } 1197c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage /* 1198c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage * Don't allow permission to later change to writeable 1199c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage * with mprotect. 1200c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage */ 1201c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage vma->vm_flags &= ~VM_MAYWRITE; 1202c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage } else { 12039929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 1204c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage } 12059929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan len = vma->vm_end - vma->vm_start; 12069929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (len > size) { 12079929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ipath_cdbg(MM, "FAIL: reqlen %lx > %zx\n", len, size); 12089929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -EINVAL; 12099929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 12109929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 12119929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 12129929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan vma->vm_pgoff = (unsigned long) addr >> PAGE_SHIFT; 12139929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan vma->vm_ops = &ipath_file_vm_ops; 12149929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan vma->vm_flags |= VM_RESERVED | VM_DONTEXPAND; 12150a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell ret = 1; 12169929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 12179929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanbail: 12189929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan return ret; 12199929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan} 12209929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 12217f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan/** 12227f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * ipath_mmap - mmap various structures into user space 12237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * @fp: the file pointer 12247f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * @vma: the VM area 12257f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 12267f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * We use this to have a shared buffer between the kernel and the user code 12277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * for the rcvhdr queue, egr buffers, and the per-port user regs and pio 12287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * buffers in the chip. We have the open and close entries so we can bump 12297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * the ref count and keep the driver from being unloaded while still mapped. 12307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 12317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic int ipath_mmap(struct file *fp, struct vm_area_struct *vma) 12327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 12337f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_portdata *pd; 12347f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd; 12357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan u64 pgaddr, ureg; 12369929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan unsigned piobufs, piocnt; 12377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret; 12387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 12397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd = port_fp(fp); 12409929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!pd) { 12419929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -EINVAL; 12429929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 12439929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 12447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd = pd->port_dd; 1245f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan 12467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 12477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * This is the ipath_do_user_init() code, mapping the shared buffers 12487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * into the user process. The address referred to by vm_pgoff is the 12499929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * file offset passed via mmap(). For shared ports, this is the 12509929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * kernel vmalloc() address of the pages to share with the master. 12519929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * For non-shared or master ports, this is a physical address. 12529929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * We only do one mmap for each space mapped. 12537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 12547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pgaddr = vma->vm_pgoff << PAGE_SHIFT; 12557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 12567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 12579929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * Check for 0 in case one of the allocations failed, but user 12589929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * called mmap anyway. 12597f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 12609929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!pgaddr) { 12619929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -EINVAL; 12629929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 1263f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan } 12647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 12659929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ipath_cdbg(MM, "pgaddr %llx vm_start=%lx len %lx port %u:%u:%u\n", 12667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (unsigned long long) pgaddr, vma->vm_start, 12679929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan vma->vm_end - vma->vm_start, dd->ipath_unit, 12689929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_port, subport_fp(fp)); 12697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 12709929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* 12719929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * Physical addresses must fit in 40 bits for our hardware. 12729929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * Check for kernel virtual addresses first, anything else must 12739929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * match a HW or memory address. 12749929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan */ 12750a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell ret = mmap_kvaddr(vma, pgaddr, pd, subport_fp(fp)); 12760a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell if (ret) { 12770a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell if (ret > 0) 12780a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell ret = 0; 12799929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 12809929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 12819929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 1282c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage ureg = dd->ipath_uregbase + dd->ipath_palign * pd->port_port; 12839929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!pd->port_subport_cnt) { 12849929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* port is not shared */ 12859929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan piocnt = dd->ipath_pbufsport; 12869929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan piobufs = pd->port_piobufs; 12879929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } else if (!subport_fp(fp)) { 12889929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* caller is the master */ 12899929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan piocnt = (dd->ipath_pbufsport / pd->port_subport_cnt) + 12909929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan (dd->ipath_pbufsport % pd->port_subport_cnt); 12919929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan piobufs = pd->port_piobufs + 12929929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dd->ipath_palign * (dd->ipath_pbufsport - piocnt); 12939929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } else { 12949929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan unsigned slave = subport_fp(fp) - 1; 12959929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 12969929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* caller is a slave */ 12979929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan piocnt = dd->ipath_pbufsport / pd->port_subport_cnt; 12989929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan piobufs = pd->port_piobufs + dd->ipath_palign * piocnt * slave; 1299f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan } 13009929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 13019929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (pgaddr == ureg) 13027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = mmap_ureg(vma, dd, ureg); 13039929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan else if (pgaddr == piobufs) 13049929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = mmap_piobufs(vma, dd, pd, piobufs, piocnt); 13059929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan else if (pgaddr == dd->ipath_pioavailregs_phys) 13069929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* in-memory copy of pioavail registers */ 13079929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = ipath_mmap_mem(vma, pd, PAGE_SIZE, 0, 13081fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan (void *) dd->ipath_pioavailregs_dma, 13099929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan "pioavail registers"); 13109929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan else if (pgaddr == pd->port_rcvegr_phys) 13117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = mmap_rcvegrbufs(vma, pd); 13129929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan else if (pgaddr == (u64) pd->port_rcvhdrq_phys) 1313f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan /* 1314525d0ca1d452ed336c1d907fb20c104467a8a47bBryan O'Sullivan * The rcvhdrq itself; readonly except on HT (so have 1315f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan * to allow writable mapping), multiple pages, contiguous 1316f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan * from an i/o perspective. 1317f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan */ 13189929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = ipath_mmap_mem(vma, pd, pd->port_rcvhdrq_size, 1, 13191fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan pd->port_rcvhdrq, 1320f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan "rcvhdrq"); 13219929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan else if (pgaddr == (u64) pd->port_rcvhdrqtailaddr_phys) 1322f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan /* in-memory copy of rcvhdrq tail register */ 1323f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan ret = ipath_mmap_mem(vma, pd, PAGE_SIZE, 0, 13241fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan pd->port_rcvhdrtail_kvaddr, 1325f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan "rcvhdrq tail"); 13267f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan else 13277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EINVAL; 13287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 13297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan vma->vm_private_data = NULL; 13307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 13317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret < 0) 13327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dev_info(&dd->pcidev->dev, 13339929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan "Failure %d on off %llx len %lx\n", 13349929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan -ret, (unsigned long long)pgaddr, 13359929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan vma->vm_end - vma->vm_start); 13369929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanbail: 13377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 13387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 13397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 13407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic unsigned int ipath_poll(struct file *fp, 13417f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct poll_table_struct *pt) 13427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 13437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_portdata *pd; 13447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan u32 head, tail; 13457f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int bit; 1346e35d710d0c5b74bc9833d6a3791706bd577a3724Bryan O'Sullivan unsigned pollflag = 0; 13477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd; 13487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 13497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd = port_fp(fp); 13509929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!pd) 13519929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 13527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd = pd->port_dd; 13537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 13547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan bit = pd->port_port + INFINIPATH_R_INTRAVAIL_SHIFT; 13557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan set_bit(bit, &dd->ipath_rcvctrl); 13567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 13577f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 13587f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * Before blocking, make sure that head is still == tail, 13597f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * reading from the chip, so we can be sure the interrupt 13607f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * enable has made it to the chip. If not equal, disable 13617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * interrupt again and return immediately. This avoids races, 13627f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * and the overhead of the chip read doesn't matter much at 13637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * this point, since we are waiting for something anyway. 13647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 13657f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 13667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, 13677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_rcvctrl); 13687f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 13697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan head = ipath_read_ureg32(dd, ur_rcvhdrhead, pd->port_port); 13707f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan tail = ipath_read_ureg32(dd, ur_rcvhdrtail, pd->port_port); 13717f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 13727f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (tail == head) { 13737f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan set_bit(IPATH_PORT_WAITING_RCV, &pd->port_flag); 13749929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (dd->ipath_rhdrhead_intr_off) /* arm rcv interrupt */ 13759dcc0e58e2913f7e6ffba64c27fe5c2f2c7b845cBryan O'Sullivan (void)ipath_write_ureg(dd, ur_rcvhdrhead, 13769dcc0e58e2913f7e6ffba64c27fe5c2f2c7b845cBryan O'Sullivan dd->ipath_rhdrhead_intr_off 13779dcc0e58e2913f7e6ffba64c27fe5c2f2c7b845cBryan O'Sullivan | head, pd->port_port); 13787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan poll_wait(fp, &pd->port_wait, pt); 13797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 13807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (test_bit(IPATH_PORT_WAITING_RCV, &pd->port_flag)) { 13817f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* timed out, no packets received */ 13827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan clear_bit(IPATH_PORT_WAITING_RCV, &pd->port_flag); 13837f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_rcvwait_to++; 13847f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 1385e35d710d0c5b74bc9833d6a3791706bd577a3724Bryan O'Sullivan else 1386e35d710d0c5b74bc9833d6a3791706bd577a3724Bryan O'Sullivan pollflag = POLLIN | POLLRDNORM; 13877f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 13887f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan else { 13897f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* it's already happened; don't do wait_event overhead */ 1390e35d710d0c5b74bc9833d6a3791706bd577a3724Bryan O'Sullivan pollflag = POLLIN | POLLRDNORM; 13917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_rcvnowait++; 13927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 13937f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 13947f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan clear_bit(bit, &dd->ipath_rcvctrl); 13957f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, 13967f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_rcvctrl); 13977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 13989929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanbail: 1399e35d710d0c5b74bc9833d6a3791706bd577a3724Bryan O'Sullivan return pollflag; 14007f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 14017f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 14029929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanstatic int init_subports(struct ipath_devdata *dd, 14039929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan struct ipath_portdata *pd, 14049929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan const struct ipath_user_info *uinfo) 14059929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan{ 14069929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan int ret = 0; 1407c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage unsigned num_subports; 14089929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan size_t size; 14099929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 14109929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* 14119929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * If the user is requesting zero or one port, 14129929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * skip the subport allocation. 14139929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan */ 14149929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (uinfo->spu_subport_cnt <= 1) 14159929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 1416c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage 1417c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage /* Old user binaries don't know about new subport implementation */ 1418c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage if ((uinfo->spu_userversion & 0xffff) != IPATH_USER_SWMINOR) { 1419c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage dev_info(&dd->pcidev->dev, 1420c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage "Mismatched user minor version (%d) and driver " 1421c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage "minor version (%d) while port sharing. Ensure " 1422c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage "that driver and library are from the same " 1423c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage "release.\n", 1424c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage (int) (uinfo->spu_userversion & 0xffff), 1425c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage IPATH_USER_SWMINOR); 1426c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage goto bail; 1427c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage } 14280a5a83cffc03592c2102ad07b7532b596a16f8cdRalph Campbell if (uinfo->spu_subport_cnt > INFINIPATH_MAX_SUBPORT) { 14299929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -EINVAL; 14309929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 14319929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 14329929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 1433c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage num_subports = uinfo->spu_subport_cnt; 1434c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage pd->subport_uregbase = vmalloc(PAGE_SIZE * num_subports); 14359929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!pd->subport_uregbase) { 14369929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -ENOMEM; 14379929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 14389929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 14399929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* Note: pd->port_rcvhdrq_size isn't initialized yet. */ 14409929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan size = ALIGN(dd->ipath_rcvhdrcnt * dd->ipath_rcvhdrentsize * 1441c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage sizeof(u32), PAGE_SIZE) * num_subports; 14429929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->subport_rcvhdr_base = vmalloc(size); 14439929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!pd->subport_rcvhdr_base) { 14449929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -ENOMEM; 14459929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail_ureg; 14469929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 14479929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 14489929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->subport_rcvegrbuf = vmalloc(pd->port_rcvegrbuf_chunks * 14499929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_rcvegrbuf_size * 1450c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage num_subports); 14519929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!pd->subport_rcvegrbuf) { 14529929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -ENOMEM; 14539929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail_rhdr; 14549929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 14559929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 14569929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_subport_cnt = uinfo->spu_subport_cnt; 14579929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_subport_id = uinfo->spu_subport_id; 14589929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->active_slaves = 1; 1459947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell set_bit(IPATH_PORT_MASTER_UNINIT, &pd->port_flag); 1460c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage memset(pd->subport_uregbase, 0, PAGE_SIZE * num_subports); 1461c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage memset(pd->subport_rcvhdr_base, 0, size); 1462c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage memset(pd->subport_rcvegrbuf, 0, pd->port_rcvegrbuf_chunks * 1463c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage pd->port_rcvegrbuf_size * 1464c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage num_subports); 14659929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 14669929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 14679929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanbail_rhdr: 14689929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan vfree(pd->subport_rcvhdr_base); 14699929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanbail_ureg: 14709929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan vfree(pd->subport_uregbase); 14719929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->subport_uregbase = NULL; 14729929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanbail: 14739929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan return ret; 14749929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan} 14759929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 14767f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic int try_alloc_port(struct ipath_devdata *dd, int port, 14779929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan struct file *fp, 14789929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan const struct ipath_user_info *uinfo) 14797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 14809929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan struct ipath_portdata *pd; 14817f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret; 14827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 14839929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!(pd = dd->ipath_pd[port])) { 14849929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan void *ptmp; 14857f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 14869929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd = kzalloc(sizeof(struct ipath_portdata), GFP_KERNEL); 14877f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 14887f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 14897f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * Allocate memory for use in ipath_tid_update() just once 14907f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * at open, not per call. Reduces cost of expected send 14917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * setup. 14927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 14937f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ptmp = kmalloc(dd->ipath_rcvtidcnt * sizeof(u16) + 14947f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_rcvtidcnt * sizeof(struct page **), 14957f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan GFP_KERNEL); 14969929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!pd || !ptmp) { 14977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dev_err(dd, "Unable to allocate portdata " 14987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "memory, failing open\n"); 14997f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -ENOMEM; 15009929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kfree(pd); 15017f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kfree(ptmp); 15027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 15037f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 15049929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dd->ipath_pd[port] = pd; 15057f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_pd[port]->port_port = port; 15067f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_pd[port]->port_dd = dd; 15077f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_pd[port]->port_tid_pg_list = ptmp; 15087f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan init_waitqueue_head(&dd->ipath_pd[port]->port_wait); 15097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 15109929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!pd->port_cnt) { 15119929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->userversion = uinfo->spu_userversion; 15129929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan init_user_egr_sizes(pd); 15139929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if ((ret = init_subports(dd, pd, uinfo)) != 0) 15149929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 15157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(PROC, "%s[%u] opened unit:port %u:%u\n", 15167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan current->comm, current->pid, dd->ipath_unit, 15177f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan port); 15189929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_cnt = 1; 15199929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan port_fp(fp) = pd; 15209929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_pid = current->pid; 15219929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan strncpy(pd->port_comm, current->comm, sizeof(pd->port_comm)); 15227f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_stats.sps_ports++; 15237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = 0; 15249929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } else 15259929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -EBUSY; 15267f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 15277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanbail: 15287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 15297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 15307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 15317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic inline int usable(struct ipath_devdata *dd) 15327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 15337f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return dd && 15347f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (dd->ipath_flags & IPATH_PRESENT) && 15357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_kregbase && 15367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_lid && 15377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan !(dd->ipath_flags & (IPATH_LINKDOWN | IPATH_DISABLED 15387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan | IPATH_LINKUNK)); 15397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 15407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 15419929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanstatic int find_free_port(int unit, struct file *fp, 15429929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan const struct ipath_user_info *uinfo) 15437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 15447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd = ipath_lookup(unit); 15457f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret, i; 15467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 15477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!dd) { 15487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -ENODEV; 15497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 15507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 15517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 15527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!usable(dd)) { 15537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -ENETDOWN; 15547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 15557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 15567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 15579929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan for (i = 1; i < dd->ipath_cfgports; i++) { 15589929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = try_alloc_port(dd, i, fp, uinfo); 15597f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret != -EBUSY) 15607f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 15617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 15627f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EBUSY; 15637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 15647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanbail: 15657f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 15667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 15677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 15689929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanstatic int find_best_unit(struct file *fp, 15699929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan const struct ipath_user_info *uinfo) 15707f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 15717f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret = 0, i, prefunit = -1, devmax; 15727f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int maxofallports, npresent, nup; 15737f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ndev; 15747f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 15759929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan devmax = ipath_count_units(&npresent, &nup, &maxofallports); 15767f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 15777f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 15787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * This code is present to allow a knowledgeable person to 15797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * specify the layout of processes to processors before opening 15807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * this driver, and then we'll assign the process to the "closest" 1581525d0ca1d452ed336c1d907fb20c104467a8a47bBryan O'Sullivan * InfiniPath chip to that processor (we assume reasonable connectivity, 15827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * for now). This code assumes that if affinity has been set 15837f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * before this point, that at most one cpu is set; for now this 15847f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * is reasonable. I check for both cpus_empty() and cpus_full(), 15857f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * in case some kernel variant sets none of the bits when no 15867f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * affinity is set. 2.6.11 and 12 kernels have all present 15877f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * cpus set. Some day we'll have to fix it up further to handle 1588525d0ca1d452ed336c1d907fb20c104467a8a47bBryan O'Sullivan * a cpu subset. This algorithm fails for two HT chips connected 15897f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * in tunnel fashion. Eventually this needs real topology 15907f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * information. There may be some issues with dual core numbering 15917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * as well. This needs more work prior to release. 15927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 15937f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!cpus_empty(current->cpus_allowed) && 15947f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan !cpus_full(current->cpus_allowed)) { 15957f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ncpus = num_online_cpus(), curcpu = -1; 15967f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (i = 0; i < ncpus; i++) 15977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (cpu_isset(i, current->cpus_allowed)) { 15987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(PROC, "%s[%u] affinity set for " 15997f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "cpu %d\n", current->comm, 16007f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan current->pid, i); 16017f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan curcpu = i; 16027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 16037f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (curcpu != -1) { 16047f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (npresent) { 16057f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan prefunit = curcpu / (ncpus / npresent); 1606c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage ipath_cdbg(PROC,"%s[%u] %d chips, %d cpus, " 16077f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "%d cpus/chip, select unit %d\n", 16087f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan current->comm, current->pid, 16097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan npresent, ncpus, ncpus / npresent, 16107f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan prefunit); 16117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 16127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 16137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 16147f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 16157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 16167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * user ports start at 1, kernel port is 0 16177f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * For now, we do round-robin access across all chips 16187f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 16197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 16207f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (prefunit != -1) 16217f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan devmax = prefunit + 1; 16227f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanrecheck: 16237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (i = 1; i < maxofallports; i++) { 16247f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (ndev = prefunit != -1 ? prefunit : 0; ndev < devmax; 16257f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ndev++) { 16267f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd = ipath_lookup(ndev); 16277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 16287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!usable(dd)) 16297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan continue; /* can't use this unit */ 16307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (i >= dd->ipath_cfgports) 16317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* 16327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * Maxed out on users of this unit. Try 16337f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * next. 16347f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 16357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan continue; 16369929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = try_alloc_port(dd, i, fp, uinfo); 16377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!ret) 16387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto done; 16397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 16407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 16417f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 16427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (npresent) { 16437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (nup == 0) { 16447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -ENETDOWN; 16457f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("No ports available (none initialized " 16467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "and ready)\n"); 16477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } else { 16487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (prefunit > 0) { 16497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* if started above 0, retry from 0 */ 16507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(PROC, 16517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "%s[%u] no ports on prefunit " 16527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "%d, clear and re-check\n", 16537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan current->comm, current->pid, 16547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan prefunit); 16557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan devmax = ipath_count_units(NULL, NULL, 16567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan NULL); 16577f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan prefunit = -1; 16587f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto recheck; 16597f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 16607f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EBUSY; 16617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("No ports available\n"); 16627f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 16637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } else { 16647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -ENXIO; 16657f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("No boards found\n"); 16667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 16677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 16687f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivandone: 16697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 16707f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 16717f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 16729929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanstatic int find_shared_port(struct file *fp, 16739929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan const struct ipath_user_info *uinfo) 16749929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan{ 16759929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan int devmax, ndev, i; 16769929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan int ret = 0; 16779929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 16789929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan devmax = ipath_count_units(NULL, NULL, NULL); 16799929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 16809929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan for (ndev = 0; ndev < devmax; ndev++) { 16819929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan struct ipath_devdata *dd = ipath_lookup(ndev); 16829929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 16839929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!dd) 16849929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan continue; 16859929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan for (i = 1; i < dd->ipath_cfgports; i++) { 16869929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan struct ipath_portdata *pd = dd->ipath_pd[i]; 16879929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 16889929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* Skip ports which are not yet open */ 16899929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!pd || !pd->port_cnt) 16909929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan continue; 16919929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* Skip port if it doesn't match the requested one */ 16929929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (pd->port_subport_id != uinfo->spu_subport_id) 16939929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan continue; 16949929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* Verify the sharing process matches the master */ 16959929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (pd->port_subport_cnt != uinfo->spu_subport_cnt || 16969929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->userversion != uinfo->spu_userversion || 16979929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_cnt >= pd->port_subport_cnt) { 16989929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -EINVAL; 16999929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto done; 17009929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 17019929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan port_fp(fp) = pd; 17029929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan subport_fp(fp) = pd->port_cnt++; 17039929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan tidcursor_fp(fp) = 0; 17049929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->active_slaves |= 1 << subport_fp(fp); 17059929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ipath_cdbg(PROC, 17069929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan "%s[%u] %u sharing %s[%u] unit:port %u:%u\n", 17079929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan current->comm, current->pid, 17089929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan subport_fp(fp), 17099929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_comm, pd->port_pid, 17109929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dd->ipath_unit, pd->port_port); 17119929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = 1; 17129929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto done; 17139929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 17149929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 17159929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 17169929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivandone: 17179929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan return ret; 17189929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan} 17199929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 17207f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic int ipath_open(struct inode *in, struct file *fp) 17217f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 1722c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan /* The real work is performed later in ipath_assign_port() */ 17239929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan fp->private_data = kzalloc(sizeof(struct ipath_filedata), GFP_KERNEL); 17249929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan return fp->private_data ? 0 : -ENOMEM; 17259929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan} 17269929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 1727c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan 1728c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan/* Get port early, so can set affinity prior to memory allocation */ 1729c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivanstatic int ipath_assign_port(struct file *fp, 17309929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan const struct ipath_user_info *uinfo) 17319929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan{ 17329929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan int ret; 17339929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan int i_minor; 17349929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan unsigned swminor; 17359929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 17369929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* Check to be sure we haven't already initialized this file */ 17379929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (port_fp(fp)) { 17389929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -EINVAL; 17399929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto done; 17409929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 17419929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 17429929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* for now, if major version is different, bail */ 17439929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if ((uinfo->spu_userversion >> 16) != IPATH_USER_SWMAJOR) { 17449929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ipath_dbg("User major version %d not same as driver " 17459929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan "major %d\n", uinfo->spu_userversion >> 16, 17469929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan IPATH_USER_SWMAJOR); 17479929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -ENODEV; 17489929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto done; 17499929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 17509929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 17519929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan swminor = uinfo->spu_userversion & 0xffff; 17529929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (swminor != IPATH_USER_SWMINOR) 17539929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ipath_dbg("User minor version %d not same as driver " 17549929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan "minor %d\n", swminor, IPATH_USER_SWMINOR); 17557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 17567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan mutex_lock(&ipath_mutex); 17577f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 17589929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (swminor == IPATH_USER_SWMINOR && uinfo->spu_subport_cnt && 17599929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan (ret = find_shared_port(fp, uinfo))) { 17609929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan mutex_unlock(&ipath_mutex); 17619929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (ret > 0) 17629929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = 0; 17639929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto done; 17649929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 17659929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 17661cfd6e648b5ea21b0d48bf6f18b129e4576557d5Josef Sipek i_minor = iminor(fp->f_path.dentry->d_inode) - IPATH_USER_MINOR_BASE; 17677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "open on dev %lx (minor %d)\n", 17681cfd6e648b5ea21b0d48bf6f18b129e4576557d5Josef Sipek (long)fp->f_path.dentry->d_inode->i_rdev, i_minor); 17697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 17709929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (i_minor) 17719929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = find_free_port(i_minor - 1, fp, uinfo); 17727f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan else 17739929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = find_best_unit(fp, uinfo); 17747f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 17757f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan mutex_unlock(&ipath_mutex); 17769929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 1777c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivandone: 1778c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan return ret; 1779c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan} 1780c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan 1781c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan 1782c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivanstatic int ipath_do_user_init(struct file *fp, 1783c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan const struct ipath_user_info *uinfo) 1784c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan{ 1785c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan int ret; 1786947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell struct ipath_portdata *pd = port_fp(fp); 1787c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan struct ipath_devdata *dd; 1788c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan u32 head32; 17899929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 1790947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell /* Subports don't need to initialize anything since master did it. */ 1791947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell if (subport_fp(fp)) { 1792947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell ret = wait_event_interruptible(pd->port_wait, 1793947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell !test_bit(IPATH_PORT_MASTER_UNINIT, &pd->port_flag)); 1794947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell goto done; 1795947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell } 1796947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell 17979929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dd = pd->port_dd; 17989929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 17999929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (uinfo->spu_rcvhdrsize) { 18009929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = ipath_setrcvhdrsize(dd, uinfo->spu_rcvhdrsize); 18019929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (ret) 18029929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto done; 18039929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 18049929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 18059929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* for now we do nothing with rcvhdrcnt: uinfo->spu_rcvhdrcnt */ 18069929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 18079929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* for right now, kernel piobufs are at end, so port 1 is at 0 */ 18089929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_piobufs = dd->ipath_piobufbase + 18099929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dd->ipath_pbufsport * (pd->port_port - 1) * dd->ipath_palign; 18109929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ipath_cdbg(VERBOSE, "Set base of piobufs for port %u to 0x%x\n", 18119929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_port, pd->port_piobufs); 18129929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 18139929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* 18149929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * Now allocate the rcvhdr Q and eager TIDs; skip the TID 18159929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * array for time being. If pd->port_port > chip-supported, 18169929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * we need to do extra stuff here to handle by handling overflow 18179929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * through port 0, someday 18189929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan */ 18199929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = ipath_create_rcvhdrq(dd, pd); 18209929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!ret) 18219929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = ipath_create_user_egr(pd); 18229929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (ret) 18239929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto done; 18249929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 18259929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* 18269929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * set the eager head register for this port to the current values 18279929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * of the tail pointers, since we don't know if they were 18289929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * updated on last use of the port. 18299929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan */ 18309929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan head32 = ipath_read_ureg32(dd, ur_rcvegrindextail, pd->port_port); 18319929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ipath_write_ureg(dd, ur_rcvegrindexhead, head32, pd->port_port); 18329929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dd->ipath_lastegrheads[pd->port_port] = -1; 18339929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dd->ipath_lastrcvhdrqtails[pd->port_port] = -1; 18349929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ipath_cdbg(VERBOSE, "Wrote port%d egrhead %x from tail regs\n", 18359929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_port, head32); 18369929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->port_tidcursor = 0; /* start at beginning after open */ 18379929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* 18389929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * now enable the port; the tail registers will be written to memory 18399929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * by the chip as soon as it sees the write to 18409929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * dd->ipath_kregs->kr_rcvctrl. The update only happens on 18419929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * transition from 0 to 1, so clear it first, then set it as part of 18429929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * enabling the port. This will (very briefly) affect any other 18439929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * open ports, but it shouldn't be long enough to be an issue. 18449929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * We explictly set the in-memory copy to 0 beforehand, so we don't 18459929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * have to wait to be sure the DMA update has happened. 18469929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan */ 18471fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan *(volatile u64 *)pd->port_rcvhdrtail_kvaddr = 0ULL; 18489929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan set_bit(INFINIPATH_R_PORTENABLE_SHIFT + pd->port_port, 18499929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan &dd->ipath_rcvctrl); 18509929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, 18519929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dd->ipath_rcvctrl & ~INFINIPATH_R_TAILUPD); 18529929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl, 18539929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dd->ipath_rcvctrl); 1854947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell /* Notify any waiting slaves */ 1855947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell if (pd->port_subport_cnt) { 1856947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell clear_bit(IPATH_PORT_MASTER_UNINIT, &pd->port_flag); 1857947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell wake_up(&pd->port_wait); 1858947d7617a1d876c2c93f73017a734e070c64d43bRalph Campbell } 18599929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivandone: 18607f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 18617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 18627f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 18637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan/** 18647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * unlock_exptid - unlock any expected TID entries port still had in use 18657f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * @pd: port 18667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * 18677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * We don't actually update the chip here, because we do a bulk update 18687f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan * below, using ipath_f_clear_tids. 18697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan */ 18707f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic void unlock_expected_tids(struct ipath_portdata *pd) 18717f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 18727f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd = pd->port_dd; 18737f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int port_tidbase = pd->port_port * dd->ipath_rcvtidcnt; 18747f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int i, cnt = 0, maxtid = port_tidbase + dd->ipath_rcvtidcnt; 18757f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 18767f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "Port %u unlocking any locked expTID pages\n", 18777f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_port); 18787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan for (i = port_tidbase; i < maxtid; i++) { 18797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!dd->ipath_pageshadow[i]) 18807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan continue; 18817f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 18821fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan pci_unmap_page(dd->pcidev, dd->ipath_physshadow[i], 18831fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan PAGE_SIZE, PCI_DMA_FROMDEVICE); 18847f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_release_user_pages_on_close(&dd->ipath_pageshadow[i], 18857f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 1); 18867f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_pageshadow[i] = NULL; 18877f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cnt++; 18887f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_stats.sps_pageunlocks++; 18897f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 18907f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (cnt) 18917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "Port %u locked %u expTID entries\n", 18927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_port, cnt); 18937f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 18947f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ipath_stats.sps_pagelocks || ipath_stats.sps_pageunlocks) 18957f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "%llu pages locked, %llu unlocked\n", 18967f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (unsigned long long) ipath_stats.sps_pagelocks, 18977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (unsigned long long) 18987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_stats.sps_pageunlocks); 18997f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 19007f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 19017f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic int ipath_close(struct inode *in, struct file *fp) 19027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 19037f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret = 0; 19049929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan struct ipath_filedata *fd; 19057f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_portdata *pd; 19067f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_devdata *dd; 19077f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan unsigned port; 19087f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 19097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "close on dev %lx, private data %p\n", 19107f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (long)in->i_rdev, fp->private_data); 19117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 19127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan mutex_lock(&ipath_mutex); 19137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 19149929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan fd = (struct ipath_filedata *) fp->private_data; 19157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan fp->private_data = NULL; 19169929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd = fd->pd; 19179929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (!pd) { 19189929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan mutex_unlock(&ipath_mutex); 19199929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 19209929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 19219929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (--pd->port_cnt) { 19229929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* 19239929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * XXX If the master closes the port before the slave(s), 19249929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * revoke the mmap for the eager receive queue so 19259929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan * the slave(s) don't wait for receive data forever. 19269929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan */ 19279929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan pd->active_slaves &= ~(1 << fd->subport); 19289929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan mutex_unlock(&ipath_mutex); 19299929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 19309929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 19319929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan port = pd->port_port; 19327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd = pd->port_dd; 19337f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 19347f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (pd->port_hdrqfull) { 19357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(PROC, "%s[%u] had %u rcvhdrqfull errors " 19367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "during run\n", pd->port_comm, pd->port_pid, 19377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_hdrqfull); 19387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_hdrqfull = 0; 19397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 19407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 19417f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (pd->port_rcvwait_to || pd->port_piowait_to 19427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan || pd->port_rcvnowait || pd->port_pionowait) { 19437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_cdbg(VERBOSE, "port%u, %u rcv, %u pio wait timeo; " 19447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "%u rcv %u, pio already\n", 19457f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_port, pd->port_rcvwait_to, 19467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_piowait_to, pd->port_rcvnowait, 19477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_pionowait); 19487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_rcvwait_to = pd->port_piowait_to = 19497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_rcvnowait = pd->port_pionowait = 0; 19507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 19517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (pd->port_flag) { 19527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dbg("port %u port_flag still set to 0x%lx\n", 19537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_port, pd->port_flag); 19547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_flag = 0; 19557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 19567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 19577f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (dd->ipath_kregbase) { 195835783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan int i; 195935783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan /* atomically clear receive enable port. */ 196035783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan clear_bit(INFINIPATH_R_PORTENABLE_SHIFT + port, 196135783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan &dd->ipath_rcvctrl); 196235783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan ipath_write_kreg( dd, dd->ipath_kregs->kr_rcvctrl, 196335783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan dd->ipath_rcvctrl); 196435783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan /* and read back from chip to be sure that nothing 196535783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan * else is in flight when we do the rest */ 196635783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan (void)ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); 19677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 19687f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan /* clean up the pkeys for this port user */ 19697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_clean_part_key(pd, dd); 197035783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan /* 197135783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan * be paranoid, and never write 0's to these, just use an 197235783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan * unused part of the port 0 tail page. Of course, 197335783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan * rcvhdraddr points to a large chunk of memory, so this 197435783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan * could still trash things, but at least it won't trash 197535783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan * page 0, and by disabling the port, it should stop "soon", 197635783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan * even if a packet or two is in already in flight after we 197735783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan * disabled the port. 197835783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan */ 197935783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan ipath_write_kreg_port(dd, 198035783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan dd->ipath_kregs->kr_rcvhdrtailaddr, port, 198135783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan dd->ipath_dummy_hdrq_phys); 198235783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan ipath_write_kreg_port(dd, dd->ipath_kregs->kr_rcvhdraddr, 198335783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan pd->port_port, dd->ipath_dummy_hdrq_phys); 198435783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan 198535783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan i = dd->ipath_pbufsport * (port - 1); 198635783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan ipath_disarm_piobufs(dd, i, dd->ipath_pbufsport); 198735783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan 19881fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan dd->ipath_f_clear_tids(dd, pd->port_port); 19891fd3b40fde3bfacdf742cadfe99cfd47ffd05219Bryan O'Sullivan 199035783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan if (dd->ipath_pageshadow) 199135783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan unlock_expected_tids(pd); 199235783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan ipath_stats.sps_ports--; 199335783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan ipath_cdbg(PROC, "%s[%u] closed port %u:%u\n", 199435783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan pd->port_comm, pd->port_pid, 199535783ec07c3f7f6902abe4433e7be1b664d0bbafBryan O'Sullivan dd->ipath_unit, port); 19967f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 19977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 19987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd->port_pid = 0; 1999f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan dd->ipath_pd[pd->port_port] = NULL; /* before releasing mutex */ 20007f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan mutex_unlock(&ipath_mutex); 2001f37bda92461313ad3bbfbf5660adc849c69718bfBryan O'Sullivan ipath_free_pddata(dd, pd); /* after releasing the mutex */ 20027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 20039929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanbail: 20049929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan kfree(fd); 20057f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 20067f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 20077f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 20089929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanstatic int ipath_port_info(struct ipath_portdata *pd, u16 subport, 20097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_port_info __user *uinfo) 20107f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 20117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_port_info info; 20127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int nup; 20137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret; 20149929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan size_t sz; 20157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 20167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (void) ipath_count_units(NULL, &nup, NULL); 20177f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan info.num_active = nup; 20187f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan info.unit = pd->port_dd->ipath_unit; 20197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan info.port = pd->port_port; 20209929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan info.subport = subport; 20219929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* Don't return new fields if old library opened the port. */ 20229929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if ((pd->userversion & 0xffff) == IPATH_USER_SWMINOR) { 20239929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan /* Number of user ports available for this device. */ 20249929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan info.num_ports = pd->port_dd->ipath_cfgports - 1; 20259929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan info.num_subports = pd->port_subport_cnt; 20269929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan sz = sizeof(info); 20279929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } else 20289929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan sz = sizeof(info) - 2 * sizeof(u16); 20297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 20309929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (copy_to_user(uinfo, &info, sz)) { 20317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EFAULT; 20327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 20337f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 20347f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = 0; 20357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 20367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanbail: 20377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 20387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 20397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 20409929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivanstatic int ipath_get_slave_info(struct ipath_portdata *pd, 20419929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan void __user *slave_mask_addr) 20429929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan{ 20439929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan int ret = 0; 20449929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 20459929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (copy_to_user(slave_mask_addr, &pd->active_slaves, sizeof(u32))) 20469929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -EFAULT; 20479929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan return ret; 20489929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan} 20499929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan 2050569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jonesstatic int ipath_force_pio_avail_update(struct ipath_devdata *dd) 2051569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones{ 2052569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones u64 reg = dd->ipath_sendctrl; 2053569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones 2054569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones clear_bit(IPATH_S_PIOBUFAVAILUPD, ®); 2055569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, reg); 2056569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, dd->ipath_sendctrl); 2057569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones 2058569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones return 0; 2059569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones} 2060569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones 20617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic ssize_t ipath_write(struct file *fp, const char __user *data, 20627f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan size_t count, loff_t *off) 20637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 20647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan const struct ipath_cmd __user *ucmd; 20657f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_portdata *pd; 20667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan const void __user *src; 20677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan size_t consumed, copy; 20687f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct ipath_cmd cmd; 20697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ssize_t ret = 0; 20707f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan void *dest; 20717f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 20727f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (count < sizeof(cmd.type)) { 20737f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EINVAL; 20747f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 20757f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 20767f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 20777f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ucmd = (const struct ipath_cmd __user *) data; 20787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 20797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (copy_from_user(&cmd.type, &ucmd->type, sizeof(cmd.type))) { 20807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EFAULT; 20817f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 20827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 20837f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 20847f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan consumed = sizeof(cmd.type); 20857f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 20867f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan switch (cmd.type) { 2087c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan case IPATH_CMD_ASSIGN_PORT: 2088c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan case __IPATH_CMD_USER_INIT: 20897f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan case IPATH_CMD_USER_INIT: 20907f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan copy = sizeof(cmd.cmd.user_info); 20917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dest = &cmd.cmd.user_info; 20927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan src = &ucmd->cmd.user_info; 20937f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan break; 20947f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan case IPATH_CMD_RECV_CTRL: 20957f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan copy = sizeof(cmd.cmd.recv_ctrl); 20967f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dest = &cmd.cmd.recv_ctrl; 20977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan src = &ucmd->cmd.recv_ctrl; 20987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan break; 20997f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan case IPATH_CMD_PORT_INFO: 21007f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan copy = sizeof(cmd.cmd.port_info); 21017f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dest = &cmd.cmd.port_info; 21027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan src = &ucmd->cmd.port_info; 21037f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan break; 21047f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan case IPATH_CMD_TID_UPDATE: 21057f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan case IPATH_CMD_TID_FREE: 21067f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan copy = sizeof(cmd.cmd.tid_info); 21077f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dest = &cmd.cmd.tid_info; 21087f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan src = &ucmd->cmd.tid_info; 21097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan break; 21107f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan case IPATH_CMD_SET_PART_KEY: 21117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan copy = sizeof(cmd.cmd.part_key); 21127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dest = &cmd.cmd.part_key; 21137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan src = &ucmd->cmd.part_key; 21147f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan break; 2115c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage case __IPATH_CMD_SLAVE_INFO: 21169929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan copy = sizeof(cmd.cmd.slave_mask_addr); 21179929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan dest = &cmd.cmd.slave_mask_addr; 21189929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan src = &ucmd->cmd.slave_mask_addr; 21199929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan break; 2120569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones case IPATH_CMD_PIOAVAILUPD: // force an update of PIOAvail reg 2121569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones copy = 0; 2122569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones src = NULL; 2123569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones dest = NULL; 2124569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones break; 21257f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan default: 21267f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -EINVAL; 21277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 21287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 21297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 2130569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones if (copy) { 2131569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones if ((count - consumed) < copy) { 2132569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones ret = -EINVAL; 2133569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones goto bail; 2134569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones } 21357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 2136569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones if (copy_from_user(dest, src, copy)) { 2137569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones ret = -EFAULT; 2138569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones goto bail; 2139569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones } 2140569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones 2141569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones consumed += copy; 21427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 21437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 21447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan pd = port_fp(fp); 2145c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan if (!pd && cmd.type != __IPATH_CMD_USER_INIT && 2146c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan cmd.type != IPATH_CMD_ASSIGN_PORT) { 21479929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = -EINVAL; 21489929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan goto bail; 21499929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan } 21507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 21517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan switch (cmd.type) { 2152c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan case IPATH_CMD_ASSIGN_PORT: 2153c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan ret = ipath_assign_port(fp, &cmd.cmd.user_info); 2154c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan if (ret) 2155c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan goto bail; 2156c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan break; 2157c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan case __IPATH_CMD_USER_INIT: 2158c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan /* backwards compatibility, get port first */ 2159c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan ret = ipath_assign_port(fp, &cmd.cmd.user_info); 2160c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan if (ret) 2161c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan goto bail; 2162c97d27d8a992cf6cefee945489d5f93fca160aa2Bryan O'Sullivan /* and fall through to current version. */ 21637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan case IPATH_CMD_USER_INIT: 21649929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = ipath_do_user_init(fp, &cmd.cmd.user_info); 21659929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan if (ret) 21667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 21677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = ipath_get_base_info( 21689929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan fp, (void __user *) (unsigned long) 21697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cmd.cmd.user_info.spu_base_info, 21707f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cmd.cmd.user_info.spu_base_info_size); 21717f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan break; 21727f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan case IPATH_CMD_RECV_CTRL: 21739929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = ipath_manage_rcvq(pd, subport_fp(fp), cmd.cmd.recv_ctrl); 21747f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan break; 21757f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan case IPATH_CMD_PORT_INFO: 21769929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = ipath_port_info(pd, subport_fp(fp), 21777f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (struct ipath_port_info __user *) 21787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan (unsigned long) cmd.cmd.port_info); 21797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan break; 21807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan case IPATH_CMD_TID_UPDATE: 21819929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = ipath_tid_update(pd, fp, &cmd.cmd.tid_info); 21827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan break; 21837f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan case IPATH_CMD_TID_FREE: 21849929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = ipath_tid_free(pd, subport_fp(fp), &cmd.cmd.tid_info); 21857f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan break; 21867f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan case IPATH_CMD_SET_PART_KEY: 21877f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = ipath_set_part_key(pd, cmd.cmd.part_key); 21887f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan break; 2189c7e29ff11f23ec78b3caf691789c2b791bb596bfMark Debbage case __IPATH_CMD_SLAVE_INFO: 21909929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan ret = ipath_get_slave_info(pd, 21919929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan (void __user *) (unsigned long) 21929929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan cmd.cmd.slave_mask_addr); 21939929b0fb0f35f54371e9364bab809bcd753f9d3aBryan O'Sullivan break; 2194569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones case IPATH_CMD_PIOAVAILUPD: 2195569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones ret = ipath_force_pio_avail_update(pd->port_dd); 2196569b87b47f906d65ee35d6ecc4767f20a6390b9bArthur Jones break; 21977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 21987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 21997f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret >= 0) 22007f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = consumed; 22017f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanbail: 22037f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 22047f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 22057f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22067f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic struct class *ipath_class; 22077f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22082b8693c0617e972fc0b2fd1ebf8de97e15b656c3Arjan van de Venstatic int init_cdev(int minor, char *name, const struct file_operations *fops, 22097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct cdev **cdevp, struct class_device **class_devp) 22107f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 22117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan const dev_t dev = MKDEV(IPATH_MAJOR, minor); 22127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct cdev *cdev = NULL; 22137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct class_device *class_dev = NULL; 22147f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret; 22157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cdev = cdev_alloc(); 22177f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (!cdev) { 22187f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan printk(KERN_ERR IPATH_DRV_NAME 22197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ": Could not allocate cdev for minor %d, %s\n", 22207f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan minor, name); 22217f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = -ENOMEM; 22227f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto done; 22237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 22247f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22257f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cdev->owner = THIS_MODULE; 22267f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cdev->ops = fops; 22277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan kobject_set_name(&cdev->kobj, name); 22287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = cdev_add(cdev, dev, 1); 22307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret < 0) { 22317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan printk(KERN_ERR IPATH_DRV_NAME 22327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ": Could not add cdev for minor %d, %s (err %d)\n", 22337f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan minor, name, -ret); 22347f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto err_cdev; 22357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 22367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan class_dev = class_device_create(ipath_class, NULL, dev, NULL, name); 22387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (IS_ERR(class_dev)) { 22407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = PTR_ERR(class_dev); 22417f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan printk(KERN_ERR IPATH_DRV_NAME ": Could not create " 22427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "class_dev for minor %d, %s (err %d)\n", 22437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan minor, name, -ret); 22447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto err_cdev; 22457f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 22467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto done; 22487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanerr_cdev: 22507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cdev_del(cdev); 22517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cdev = NULL; 22527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivandone: 22547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret >= 0) { 22557f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan *cdevp = cdev; 22567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan *class_devp = class_dev; 22577f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } else { 22587f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan *cdevp = NULL; 22597f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan *class_devp = NULL; 22607f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 22617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22627f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 22637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 22647f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22652b8693c0617e972fc0b2fd1ebf8de97e15b656c3Arjan van de Venint ipath_cdev_init(int minor, char *name, const struct file_operations *fops, 22667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct cdev **cdevp, struct class_device **class_devp) 22677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 22687f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return init_cdev(minor, name, fops, cdevp, class_devp); 22697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 22707f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22717f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic void cleanup_cdev(struct cdev **cdevp, 22727f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct class_device **class_devp) 22737f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 22747f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct class_device *class_dev = *class_devp; 22757f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22767f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (class_dev) { 22777f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan class_device_unregister(class_dev); 22787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan *class_devp = NULL; 22797f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 22807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22817f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (*cdevp) { 22827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cdev_del(*cdevp); 22837f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan *cdevp = NULL; 22847f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 22857f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 22867f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22877f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanvoid ipath_cdev_cleanup(struct cdev **cdevp, 22887f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan struct class_device **class_devp) 22897f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 22907f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cleanup_cdev(cdevp, class_devp); 22917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 22927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22937f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic struct cdev *wildcard_cdev; 22947f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic struct class_device *wildcard_class_dev; 22957f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22967f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic const dev_t dev = MKDEV(IPATH_MAJOR, 0); 22977f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 22987f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic int user_init(void) 22997f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 23007f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret; 23017f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23027f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = register_chrdev_region(dev, IPATH_NMINORS, IPATH_DRV_NAME); 23037f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret < 0) { 23047f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan printk(KERN_ERR IPATH_DRV_NAME ": Could not register " 23057f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "chrdev region (err %d)\n", -ret); 23067f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto done; 23077f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 23087f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23097f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_class = class_create(THIS_MODULE, IPATH_DRV_NAME); 23107f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23117f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (IS_ERR(ipath_class)) { 23127f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = PTR_ERR(ipath_class); 23137f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan printk(KERN_ERR IPATH_DRV_NAME ": Could not create " 23147f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "device class (err %d)\n", -ret); 23157f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 23167f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 23177f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23187f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto done; 23197f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanbail: 23207f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan unregister_chrdev_region(dev, IPATH_NMINORS); 23217f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivandone: 23227f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 23237f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 23247f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23257f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic void user_cleanup(void) 23267f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 23277f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ipath_class) { 23287f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan class_destroy(ipath_class); 23297f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_class = NULL; 23307f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 23317f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23327f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan unregister_chrdev_region(dev, IPATH_NMINORS); 23337f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 23347f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23357f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic atomic_t user_count = ATOMIC_INIT(0); 23367f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanstatic atomic_t user_setup = ATOMIC_INIT(0); 23377f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23387f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanint ipath_user_add(struct ipath_devdata *dd) 23397f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 23407f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan char name[10]; 23417f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan int ret; 23427f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23437f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (atomic_inc_return(&user_count) == 1) { 23447f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = user_init(); 23457f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret < 0) { 23467f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dev_err(dd, "Unable to set up user support: " 23477f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "error %d\n", -ret); 23487f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 23497f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 23507f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = init_cdev(0, "ipath", &ipath_file_ops, &wildcard_cdev, 23517f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan &wildcard_class_dev); 23527f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret < 0) { 23537f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dev_err(dd, "Could not create wildcard " 23547f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan "minor: error %d\n", -ret); 23550fd41363e0785247b7c19127318abc8b5eacc86bBryan O'Sullivan goto bail_user; 23567f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 23577f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23587f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan atomic_set(&user_setup, 1); 23597f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 23607f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23617f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan snprintf(name, sizeof(name), "ipath%d", dd->ipath_unit); 23627f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23637f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ret = init_cdev(dd->ipath_unit + 1, name, &ipath_file_ops, 2364a2acb2ff36876fdfa5f7a8bf811765aadc74c1c1Bryan O'Sullivan &dd->user_cdev, &dd->user_class_dev); 23657f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (ret < 0) 23667f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan ipath_dev_err(dd, "Could not create user minor %d, %s\n", 23677f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan dd->ipath_unit + 1, name); 23687f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23697f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 23707f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23710fd41363e0785247b7c19127318abc8b5eacc86bBryan O'Sullivanbail_user: 23727f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan user_cleanup(); 23737f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanbail: 23747f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return ret; 23757f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 23767f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 2377a2acb2ff36876fdfa5f7a8bf811765aadc74c1c1Bryan O'Sullivanvoid ipath_user_remove(struct ipath_devdata *dd) 23787f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan{ 2379a2acb2ff36876fdfa5f7a8bf811765aadc74c1c1Bryan O'Sullivan cleanup_cdev(&dd->user_cdev, &dd->user_class_dev); 23807f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23817f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (atomic_dec_return(&user_count) == 0) { 23827f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan if (atomic_read(&user_setup) == 0) 23837f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan goto bail; 23847f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23857f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan cleanup_cdev(&wildcard_cdev, &wildcard_class_dev); 23867f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan user_cleanup(); 23877f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan 23887f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan atomic_set(&user_setup, 0); 23897f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan } 23907f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivanbail: 23917f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan return; 23927f510b46e4771cfb89af134b3aa827d46125a2ceBryan O'Sullivan} 2393