sata_vsc.c revision 029cfd6b74fc5c517865fad78cf4a3ea8d9b664a
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * sata_vsc.c - Vitesse VSC7174 4 port DPA SATA 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Maintained by: Jeremy Higdon @ SGI 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Please ALWAYS copy linux-ide@vger.kernel.org 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * on emails. 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright 2004 SGI 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bits from Jeff Garzik, Copyright RedHat, Inc. 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 12af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * 13af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * This program is free software; you can redistribute it and/or modify 14af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * it under the terms of the GNU General Public License as published by 15af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * the Free Software Foundation; either version 2, or (at your option) 16af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * any later version. 17af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * 18af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * This program is distributed in the hope that it will be useful, 19af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * but WITHOUT ANY WARRANTY; without even the implied warranty of 20af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * GNU General Public License for more details. 22af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * 23af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * You should have received a copy of the GNU General Public License 24af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * along with this program; see the file COPYING. If not, write to 25af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 26af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * 27af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * 28af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * libata documentation is available via 'make {ps|pdf}docs', 29af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * as Documentation/DocBook/libata.* 30af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * 31af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * Vitesse hardware documentation presumably available under NDA. 32af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * Intel 31244 (same hardware interface) documentation presumably 33af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * available from http://developer.intel.com/ 34af36d7f0df56de3e3e4bbfb15d0915097ecb8cabJeff Garzik * 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/pci.h> 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/blkdev.h> 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/interrupt.h> 447003c05d77593f567e9940e68a944d846228fd7aDomen Puncer#include <linux/dma-mapping.h> 45a9524a76f70f3343e4be27f95a7e92a8ba5f9009Jeff Garzik#include <linux/device.h> 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_host.h> 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/libata.h> 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRV_NAME "sata_vsc" 502a3103ce4357a09c2289405f969acec0edf4398fJeff Garzik#define DRV_VERSION "2.3" 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5255cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzikenum { 530d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo VSC_MMIO_BAR = 0, 540d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo 5555cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik /* Interrupt register offsets (from chip base address) */ 5655cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_INT_STAT_OFFSET = 0x00, 5755cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_INT_MASK_OFFSET = 0x04, 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5955cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik /* Taskfile registers offsets */ 6055cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_TF_CMD_OFFSET = 0x00, 6155cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_TF_DATA_OFFSET = 0x00, 6255cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_TF_ERROR_OFFSET = 0x04, 6355cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_TF_FEATURE_OFFSET = 0x06, 6455cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_TF_NSECT_OFFSET = 0x08, 6555cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_TF_LBAL_OFFSET = 0x0c, 6655cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_TF_LBAM_OFFSET = 0x10, 6755cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_TF_LBAH_OFFSET = 0x14, 6855cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_TF_DEVICE_OFFSET = 0x18, 6955cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_TF_STATUS_OFFSET = 0x1c, 7055cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_TF_COMMAND_OFFSET = 0x1d, 7155cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_TF_ALTSTATUS_OFFSET = 0x28, 7255cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_TF_CTL_OFFSET = 0x29, 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7455cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik /* DMA base */ 7555cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_UP_DESCRIPTOR_OFFSET = 0x64, 7655cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_UP_DATA_BUFFER_OFFSET = 0x6C, 7755cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_DMA_CMD_OFFSET = 0x70, 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7955cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik /* SCRs base */ 8055cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_SCR_STATUS_OFFSET = 0x100, 8155cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_SCR_ERROR_OFFSET = 0x104, 8255cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_SCR_CONTROL_OFFSET = 0x108, 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8455cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik /* Port stride */ 8555cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_PORT_OFFSET = 0x200, 8655cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik 8755cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik /* Error interrupt status bit offsets */ 8855cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_INT_ERROR_CRC = 0x40, 8955cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_INT_ERROR_T = 0x20, 9055cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_INT_ERROR_P = 0x10, 9155cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_INT_ERROR_R = 0x8, 9255cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_INT_ERROR_E = 0x4, 9355cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_INT_ERROR_M = 0x2, 9455cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_INT_PHY_CHANGE = 0x1, 9555cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_INT_ERROR = (VSC_SATA_INT_ERROR_CRC | VSC_SATA_INT_ERROR_T | \ 9655cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_INT_ERROR_P | VSC_SATA_INT_ERROR_R | \ 9755cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_INT_ERROR_E | VSC_SATA_INT_ERROR_M | \ 9855cca65e1995ad604ee87e22c76c17d5cbceb9d0Jeff Garzik VSC_SATA_INT_PHY_CHANGE), 997cbaa86b937b0b1fab95c159989f6a3c00bbcf78Dan Wolstenholme}; 100c962990a38167aacac91738501815deffa3afbd6Dan Williams 101da3dbb17a0e9a9ec7f5aed95f1fddadb790edc9dTejun Heostatic int vsc_sata_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val) 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sc_reg > SCR_CONTROL) 104da3dbb17a0e9a9ec7f5aed95f1fddadb790edc9dTejun Heo return -EINVAL; 105da3dbb17a0e9a9ec7f5aed95f1fddadb790edc9dTejun Heo *val = readl(ap->ioaddr.scr_addr + (sc_reg * 4)); 106da3dbb17a0e9a9ec7f5aed95f1fddadb790edc9dTejun Heo return 0; 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 110da3dbb17a0e9a9ec7f5aed95f1fddadb790edc9dTejun Heostatic int vsc_sata_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val) 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sc_reg > SCR_CONTROL) 113da3dbb17a0e9a9ec7f5aed95f1fddadb790edc9dTejun Heo return -EINVAL; 1140d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo writel(val, ap->ioaddr.scr_addr + (sc_reg * 4)); 115da3dbb17a0e9a9ec7f5aed95f1fddadb790edc9dTejun Heo return 0; 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 119ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williamsstatic void vsc_freeze(struct ata_port *ap) 120ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams{ 121ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams void __iomem *mask_addr; 122ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams 123ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams mask_addr = ap->host->iomap[VSC_MMIO_BAR] + 124ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams VSC_SATA_INT_MASK_OFFSET + ap->port_no; 125ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams 126ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams writeb(0, mask_addr); 127ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams} 128ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams 129ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams 130ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williamsstatic void vsc_thaw(struct ata_port *ap) 131ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams{ 132ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams void __iomem *mask_addr; 133ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams 134ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams mask_addr = ap->host->iomap[VSC_MMIO_BAR] + 135ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams VSC_SATA_INT_MASK_OFFSET + ap->port_no; 136ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams 137ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams writeb(0xff, mask_addr); 138ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams} 139ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams 140ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void vsc_intr_mask_update(struct ata_port *ap, u8 ctl) 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 143307e4dc28ee255bf22b431f242f847c9d96fe3faAl Viro void __iomem *mask_addr; 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 mask; 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1460d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo mask_addr = ap->host->iomap[VSC_MMIO_BAR] + 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds VSC_SATA_INT_MASK_OFFSET + ap->port_no; 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = readb(mask_addr); 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctl & ATA_NIEN) 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask |= 0x80; 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask &= 0x7F; 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds writeb(mask, mask_addr); 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 157057ace5e79da9ebf2aa82833cfea825533ac06fbJeff Garzikstatic void vsc_sata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf) 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ata_ioports *ioaddr = &ap->ioaddr; 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR; 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The only thing the ctl register is used for is SRST. 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * That is not enabled or disabled via tf_load. 1655796d1c4c89efff823259fda35b08ea66ebf8b23Jeff Garzik * However, if ATA_NIEN is changed, then we need to change 1665796d1c4c89efff823259fda35b08ea66ebf8b23Jeff Garzik * the interrupt register. 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((tf->ctl & ATA_NIEN) != (ap->last_ctl & ATA_NIEN)) { 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ap->last_ctl = tf->ctl; 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds vsc_intr_mask_update(ap, tf->ctl & ATA_NIEN); 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) { 173850a9d8a8bbeeba8263025a983d1c18e5e250f5dJeff Garzik writew(tf->feature | (((u16)tf->hob_feature) << 8), 1740d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo ioaddr->feature_addr); 175850a9d8a8bbeeba8263025a983d1c18e5e250f5dJeff Garzik writew(tf->nsect | (((u16)tf->hob_nsect) << 8), 1760d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo ioaddr->nsect_addr); 177850a9d8a8bbeeba8263025a983d1c18e5e250f5dJeff Garzik writew(tf->lbal | (((u16)tf->hob_lbal) << 8), 1780d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo ioaddr->lbal_addr); 179850a9d8a8bbeeba8263025a983d1c18e5e250f5dJeff Garzik writew(tf->lbam | (((u16)tf->hob_lbam) << 8), 1800d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo ioaddr->lbam_addr); 181850a9d8a8bbeeba8263025a983d1c18e5e250f5dJeff Garzik writew(tf->lbah | (((u16)tf->hob_lbah) << 8), 1820d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo ioaddr->lbah_addr); 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (is_addr) { 1840d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo writew(tf->feature, ioaddr->feature_addr); 1850d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo writew(tf->nsect, ioaddr->nsect_addr); 1860d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo writew(tf->lbal, ioaddr->lbal_addr); 1870d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo writew(tf->lbam, ioaddr->lbam_addr); 1880d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo writew(tf->lbah, ioaddr->lbah_addr); 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tf->flags & ATA_TFLAG_DEVICE) 1920d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo writeb(tf->device, ioaddr->device_addr); 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ata_wait_idle(ap); 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void vsc_sata_tf_read(struct ata_port *ap, struct ata_taskfile *tf) 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ata_ioports *ioaddr = &ap->ioaddr; 201ac19bff25b6834d858274406a686f2227dd8489dJeff Garzik u16 nsect, lbal, lbam, lbah, feature; 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 203ac19bff25b6834d858274406a686f2227dd8489dJeff Garzik tf->command = ata_check_status(ap); 2040d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo tf->device = readw(ioaddr->device_addr); 2050d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo feature = readw(ioaddr->error_addr); 2060d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo nsect = readw(ioaddr->nsect_addr); 2070d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo lbal = readw(ioaddr->lbal_addr); 2080d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo lbam = readw(ioaddr->lbam_addr); 2090d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo lbah = readw(ioaddr->lbah_addr); 210ac19bff25b6834d858274406a686f2227dd8489dJeff Garzik 211ac19bff25b6834d858274406a686f2227dd8489dJeff Garzik tf->feature = feature; 212ac19bff25b6834d858274406a686f2227dd8489dJeff Garzik tf->nsect = nsect; 213ac19bff25b6834d858274406a686f2227dd8489dJeff Garzik tf->lbal = lbal; 214ac19bff25b6834d858274406a686f2227dd8489dJeff Garzik tf->lbam = lbam; 215ac19bff25b6834d858274406a686f2227dd8489dJeff Garzik tf->lbah = lbah; 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tf->flags & ATA_TFLAG_LBA48) { 218ac19bff25b6834d858274406a686f2227dd8489dJeff Garzik tf->hob_feature = feature >> 8; 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tf->hob_nsect = nsect >> 8; 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tf->hob_lbal = lbal >> 8; 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tf->hob_lbam = lbam >> 8; 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tf->hob_lbah = lbah >> 8; 2235796d1c4c89efff823259fda35b08ea66ebf8b23Jeff Garzik } 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 226ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williamsstatic inline void vsc_error_intr(u8 port_status, struct ata_port *ap) 227ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams{ 228ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams if (port_status & (VSC_SATA_INT_PHY_CHANGE | VSC_SATA_INT_ERROR_M)) 229ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams ata_port_freeze(ap); 230ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams else 231ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams ata_port_abort(ap); 232ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams} 233ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams 234ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williamsstatic void vsc_port_intr(u8 port_status, struct ata_port *ap) 235ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams{ 236ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams struct ata_queued_cmd *qc; 237ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams int handled = 0; 238ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams 239ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams if (unlikely(port_status & VSC_SATA_INT_ERROR)) { 240ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams vsc_error_intr(port_status, ap); 241ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams return; 242ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams } 243ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams 2449af5c9c97dc9d599281778864c72b385f0c63341Tejun Heo qc = ata_qc_from_tag(ap, ap->link.active_tag); 245ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams if (qc && likely(!(qc->tf.flags & ATA_TFLAG_POLLING))) 246ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams handled = ata_host_intr(ap, qc); 247ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams 248ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams /* We received an interrupt during a polled command, 249ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams * or some other spurious condition. Interrupt reporting 250ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams * with this hardware is fairly reliable so it is safe to 251ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams * simply clear the interrupt 252ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams */ 253ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams if (unlikely(!handled)) 254ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams ata_chk_status(ap); 255ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams} 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * vsc_sata_interrupt 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2605796d1c4c89efff823259fda35b08ea66ebf8b23Jeff Garzik * Read the interrupt register and process for the devices that have 2615796d1c4c89efff823259fda35b08ea66ebf8b23Jeff Garzik * them pending. 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2635796d1c4c89efff823259fda35b08ea66ebf8b23Jeff Garzikstatic irqreturn_t vsc_sata_interrupt(int irq, void *dev_instance) 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 265cca3974e48607c3775dc73b544a5700b2e37c21aJeff Garzik struct ata_host *host = dev_instance; 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int i; 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int handled = 0; 268ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams u32 status; 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 270ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams status = readl(host->iomap[VSC_MMIO_BAR] + VSC_SATA_INT_STAT_OFFSET); 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 272ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams if (unlikely(status == 0xffffffff || status == 0)) { 273ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams if (status) 274ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams dev_printk(KERN_ERR, host->dev, 275ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams ": IRQ status == 0xffffffff, " 276ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams "PCI fault or device removal?\n"); 277ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams goto out; 278ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams } 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 280ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams spin_lock(&host->lock); 2812ae5b30ff08cee422c7f6388a759f743633c7542Dan Williams 282ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams for (i = 0; i < host->n_ports; i++) { 283ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams u8 port_status = (status >> (8 * i)) & 0xff; 284ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams if (port_status) { 285ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams struct ata_port *ap = host->ports[i]; 2862ae5b30ff08cee422c7f6388a759f743633c7542Dan Williams 287029f5468b5b5f93a09bf90326fdcb9124079658dJeff Garzik if (ap && !(ap->flags & ATA_FLAG_DISABLED)) { 288ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams vsc_port_intr(port_status, ap); 289ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams handled++; 290ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams } else 291ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams dev_printk(KERN_ERR, host->dev, 2925796d1c4c89efff823259fda35b08ea66ebf8b23Jeff Garzik "interrupt from disabled port %d\n", i); 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 296cca3974e48607c3775dc73b544a5700b2e37c21aJeff Garzik spin_unlock(&host->lock); 297ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williamsout: 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IRQ_RETVAL(handled); 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 302193515d51ccb363165d6b09e9ba5c21089e34badJeff Garzikstatic struct scsi_host_template vsc_sata_sht = { 30368d1d07b510bb57a504588adc2bd2758adea0965Tejun Heo ATA_BMDMA_SHT(DRV_NAME), 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 307029cfd6b74fc5c517865fad78cf4a3ea8d9b664aTejun Heostatic struct ata_port_operations vsc_sata_ops = { 308029cfd6b74fc5c517865fad78cf4a3ea8d9b664aTejun Heo .inherits = &ata_bmdma_port_ops, 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tf_load = vsc_sata_tf_load, 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tf_read = vsc_sata_tf_read, 311ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams .freeze = vsc_freeze, 312ea34e45a4670c4fa0da3442fc74789fd66c1201bDan Williams .thaw = vsc_thaw, 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .scr_read = vsc_sata_scr_read, 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .scr_write = vsc_sata_scr_write, 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3170d5ff566779f894ca9937231a181eb31e4adff0eTejun Heostatic void __devinit vsc_sata_setup_port(struct ata_ioports *port, 3180d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo void __iomem *base) 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->cmd_addr = base + VSC_SATA_TF_CMD_OFFSET; 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->data_addr = base + VSC_SATA_TF_DATA_OFFSET; 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->error_addr = base + VSC_SATA_TF_ERROR_OFFSET; 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->feature_addr = base + VSC_SATA_TF_FEATURE_OFFSET; 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->nsect_addr = base + VSC_SATA_TF_NSECT_OFFSET; 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->lbal_addr = base + VSC_SATA_TF_LBAL_OFFSET; 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->lbam_addr = base + VSC_SATA_TF_LBAM_OFFSET; 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->lbah_addr = base + VSC_SATA_TF_LBAH_OFFSET; 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->device_addr = base + VSC_SATA_TF_DEVICE_OFFSET; 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->status_addr = base + VSC_SATA_TF_STATUS_OFFSET; 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->command_addr = base + VSC_SATA_TF_COMMAND_OFFSET; 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->altstatus_addr = base + VSC_SATA_TF_ALTSTATUS_OFFSET; 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->ctl_addr = base + VSC_SATA_TF_CTL_OFFSET; 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->bmdma_addr = base + VSC_SATA_DMA_CMD_OFFSET; 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->scr_addr = base + VSC_SATA_SCR_STATUS_OFFSET; 3350d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo writel(0, base + VSC_SATA_UP_DESCRIPTOR_OFFSET); 3360d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo writel(0, base + VSC_SATA_UP_DATA_BUFFER_OFFSET); 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3405796d1c4c89efff823259fda35b08ea66ebf8b23Jeff Garzikstatic int __devinit vsc_sata_init_one(struct pci_dev *pdev, 3415796d1c4c89efff823259fda35b08ea66ebf8b23Jeff Garzik const struct pci_device_id *ent) 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3434447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo static const struct ata_port_info pi = { 3444447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | 3454447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo ATA_FLAG_MMIO, 3464447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo .pio_mask = 0x1f, 3474447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo .mwdma_mask = 0x07, 348bf6263a853c9c143bf03f0a6fdcc68ab714fb5f5Jeff Garzik .udma_mask = ATA_UDMA6, 3494447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo .port_ops = &vsc_sata_ops, 3504447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo }; 3514447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo const struct ata_port_info *ppi[] = { &pi, NULL }; 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static int printed_version; 3534447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo struct ata_host *host; 354307e4dc28ee255bf22b431f242f847c9d96fe3faAl Viro void __iomem *mmio_base; 3554447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo int i, rc; 3567de970e11fb832a56c897276967fb0e49f59b313Nate Dailey u8 cls; 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!printed_version++) 359a9524a76f70f3343e4be27f95a7e92a8ba5f9009Jeff Garzik dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3614447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo /* allocate host */ 3624447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo host = ata_host_alloc_pinfo(&pdev->dev, ppi, 4); 3634447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo if (!host) 3644447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo return -ENOMEM; 3654447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo 36624dc5f33ea4b504cfbd23fa159a4cacba8e4d800Tejun Heo rc = pcim_enable_device(pdev); 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rc) 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3704447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo /* check if we have needed resource mapped */ 37124dc5f33ea4b504cfbd23fa159a4cacba8e4d800Tejun Heo if (pci_resource_len(pdev, 0) == 0) 37224dc5f33ea4b504cfbd23fa159a4cacba8e4d800Tejun Heo return -ENODEV; 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3744447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo /* map IO regions and intialize host accordingly */ 3750d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo rc = pcim_iomap_regions(pdev, 1 << VSC_MMIO_BAR, DRV_NAME); 3760d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo if (rc == -EBUSY) 37724dc5f33ea4b504cfbd23fa159a4cacba8e4d800Tejun Heo pcim_pin_device(pdev); 3780d5ff566779f894ca9937231a181eb31e4adff0eTejun Heo if (rc) 37924dc5f33ea4b504cfbd23fa159a4cacba8e4d800Tejun Heo return rc; 3804447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo host->iomap = pcim_iomap_table(pdev); 3814447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo 3824447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo mmio_base = host->iomap[VSC_MMIO_BAR]; 3834447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo 384cbcdd87593a1d85c5c4b259945a3a09eee12814dTejun Heo for (i = 0; i < host->n_ports; i++) { 385cbcdd87593a1d85c5c4b259945a3a09eee12814dTejun Heo struct ata_port *ap = host->ports[i]; 386cbcdd87593a1d85c5c4b259945a3a09eee12814dTejun Heo unsigned int offset = (i + 1) * VSC_SATA_PORT_OFFSET; 387cbcdd87593a1d85c5c4b259945a3a09eee12814dTejun Heo 388cbcdd87593a1d85c5c4b259945a3a09eee12814dTejun Heo vsc_sata_setup_port(&ap->ioaddr, mmio_base + offset); 389cbcdd87593a1d85c5c4b259945a3a09eee12814dTejun Heo 390cbcdd87593a1d85c5c4b259945a3a09eee12814dTejun Heo ata_port_pbar_desc(ap, VSC_MMIO_BAR, -1, "mmio"); 391cbcdd87593a1d85c5c4b259945a3a09eee12814dTejun Heo ata_port_pbar_desc(ap, VSC_MMIO_BAR, offset, "port"); 392cbcdd87593a1d85c5c4b259945a3a09eee12814dTejun Heo } 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Use 32 bit DMA mask, because 64 bit address support is poor. 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rc) 39924dc5f33ea4b504cfbd23fa159a4cacba8e4d800Tejun Heo return rc; 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rc) 40224dc5f33ea4b504cfbd23fa159a4cacba8e4d800Tejun Heo return rc; 4037cbaa86b937b0b1fab95c159989f6a3c00bbcf78Dan Wolstenholme 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 4057de970e11fb832a56c897276967fb0e49f59b313Nate Dailey * Due to a bug in the chip, the default cache line size can't be 4067de970e11fb832a56c897276967fb0e49f59b313Nate Dailey * used (unless the default is non-zero). 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4087de970e11fb832a56c897276967fb0e49f59b313Nate Dailey pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cls); 4097de970e11fb832a56c897276967fb0e49f59b313Nate Dailey if (cls == 0x00) 4107de970e11fb832a56c897276967fb0e49f59b313Nate Dailey pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x80); 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 41224dc5f33ea4b504cfbd23fa159a4cacba8e4d800Tejun Heo if (pci_enable_msi(pdev) == 0) 4137cbaa86b937b0b1fab95c159989f6a3c00bbcf78Dan Wolstenholme pci_intx(pdev, 0); 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4158a60a07129fad60bba779a2a4038c7518b167fc7Jeff Garzik /* 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Config offset 0x98 is "Extended Control and Status Register 0" 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Default value is (1 << 28). All bits except bit 28 are reserved in 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DPA mode. If bit 28 is set, LED 0 reflects all ports' activity. 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If bit 28 is clear, each port has its own LED. 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pci_write_config_dword(pdev, 0x98, 0); 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4234447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo pci_set_master(pdev); 4244447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo return ata_host_activate(host, pdev->irq, vsc_sata_interrupt, 4254447d35156169cf136e829eb6b5cac2d6370f2d9Tejun Heo IRQF_SHARED, &vsc_sata_sht); 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4283b7d697dfb7d03edb87e50b743a7ecff029618e9Jeff Garzikstatic const struct pci_device_id vsc_sata_pci_tbl[] = { 429438bc9c3dec27ab37f0ff78471d0b8b91addd2ddJeff Garzik { PCI_VENDOR_ID_VITESSE, 0x7174, 43074d0a988d3aa359b6b8a8536c8cb92cce02ca5d5Brent Casavant PCI_ANY_ID, PCI_ANY_ID, 0x10600, 0xFFFFFF, 0 }, 431438bc9c3dec27ab37f0ff78471d0b8b91addd2ddJeff Garzik { PCI_VENDOR_ID_INTEL, 0x3200, 43274d0a988d3aa359b6b8a8536c8cb92cce02ca5d5Brent Casavant PCI_ANY_ID, PCI_ANY_ID, 0x10600, 0xFFFFFF, 0 }, 4332d2744fc8be620a2dc469cf48349e3e704119f1bJeff Garzik 434438bc9c3dec27ab37f0ff78471d0b8b91addd2ddJeff Garzik { } /* terminate list */ 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct pci_driver vsc_sata_pci_driver = { 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = DRV_NAME, 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .id_table = vsc_sata_pci_tbl, 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .probe = vsc_sata_init_one, 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .remove = ata_pci_remove_one, 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init vsc_sata_init(void) 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 446b7887196e38da54ff893897b80875d632d1a1114Pavel Roskin return pci_register_driver(&vsc_sata_pci_driver); 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit vsc_sata_exit(void) 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pci_unregister_driver(&vsc_sata_pci_driver); 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("Jeremy Higdon"); 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("low-level driver for Vitesse VSC7174 SATA controller"); 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DEVICE_TABLE(pci, vsc_sata_pci_tbl); 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_VERSION(DRV_VERSION); 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(vsc_sata_init); 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(vsc_sata_exit); 462