cx18-irq.c revision f056d29eebd2c8800cf42528ba0470c77a928821
11c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil/* 21c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * cx18 interrupt handling 31c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * 41c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> 51c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * 61c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * This program is free software; you can redistribute it and/or modify 71c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * it under the terms of the GNU General Public License as published by 81c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * the Free Software Foundation; either version 2 of the License, or 91c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * (at your option) any later version. 101c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * 111c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * This program is distributed in the hope that it will be useful, 121c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * but WITHOUT ANY WARRANTY; without even the implied warranty of 131c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 141c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * GNU General Public License for more details. 151c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * 161c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * You should have received a copy of the GNU General Public License 171c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * along with this program; if not, write to the Free Software 181c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 191c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil * 02111-1307 USA 201c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil */ 211c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 221c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil#include "cx18-driver.h" 23b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls#include "cx18-io.h" 241c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil#include "cx18-firmware.h" 251c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil#include "cx18-fileops.h" 261c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil#include "cx18-queue.h" 271c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil#include "cx18-irq.h" 281c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil#include "cx18-ioctl.h" 291c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil#include "cx18-mailbox.h" 301c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil#include "cx18-vbi.h" 311c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil#include "cx18-scb.h" 321c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 331c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil#define DMA_MAGIC_COOKIE 0x000001fe 341c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 351c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuilstatic void epu_dma_done(struct cx18 *cx, struct cx18_mailbox *mb) 361c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil{ 371c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil u32 handle = mb->args[0]; 381c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil struct cx18_stream *s = NULL; 391c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil struct cx18_buffer *buf; 401c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil u32 off; 411c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil int i; 421c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil int id; 431c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 441c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil for (i = 0; i < CX18_MAX_STREAMS; i++) { 451c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil s = &cx->streams[i]; 461c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if ((handle == s->handle) && (s->dvb.enabled)) 471c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil break; 481c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if (s->v4l2dev && handle == s->handle) 491c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil break; 501c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil } 511c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if (i == CX18_MAX_STREAMS) { 52e86a93dc3c870c412592c1f298c1425d80c58c6eAndy Walls CX18_WARN("Got DMA done notification for unknown/inactive" 53e86a93dc3c870c412592c1f298c1425d80c58c6eAndy Walls " handle %d\n", handle); 541c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil mb->error = CXERR_NOT_OPEN; 551c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil mb->cmd = 0; 561c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil cx18_mb_ack(cx, mb); 571c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil return; 581c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil } 591c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 601c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil off = mb->args[1]; 611c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if (mb->args[2] != 1) 621c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil CX18_WARN("Ack struct = %d for %s\n", 631c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil mb->args[2], s->name); 64b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls id = cx18_read_enc(cx, off); 65b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls buf = cx18_queue_get_buf_irq(s, id, cx18_read_enc(cx, off + 4)); 661c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil CX18_DEBUG_HI_DMA("DMA DONE for %s (buffer %d)\n", s->name, id); 671c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if (buf) { 681c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil cx18_buf_sync_for_cpu(s, buf); 691c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if (s->type == CX18_ENC_STREAM_TYPE_TS && s->dvb.enabled) { 701c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil /* process the buffer here */ 711c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil CX18_DEBUG_HI_DMA("TS recv and sent bytesused=%d\n", 721c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil buf->bytesused); 731c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 741c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil dvb_dmx_swfilter(&s->dvb.demux, buf->buf, 751c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil buf->bytesused); 761c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 771c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil cx18_buf_sync_for_device(s, buf); 781c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle, 79990c81c8afcd71eced2482ad59950ea755eddc7fAl Viro (void __iomem *)&cx->scb->cpu_mdl[buf->id] - cx->enc_mem, 801c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 1, buf->id, s->buf_size); 811c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil } else 821c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil set_bit(CX18_F_B_NEED_BUF_SWAP, &buf->b_flags); 831c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil } else { 841c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil CX18_WARN("Could not find buf %d for stream %s\n", 85b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls cx18_read_enc(cx, off), s->name); 861c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil } 871c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil mb->error = 0; 881c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil mb->cmd = 0; 891c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil cx18_mb_ack(cx, mb); 901c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil wake_up(&cx->dma_waitq); 911c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if (s->id != -1) 921c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil wake_up(&s->waitq); 931c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil} 941c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 951c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuilstatic void epu_debug(struct cx18 *cx, struct cx18_mailbox *mb) 961c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil{ 971c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil char str[256] = { 0 }; 981c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil char *p; 991c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 1001c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if (mb->args[1]) { 101b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls cx18_setup_page(cx, mb->args[1]); 102b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls cx18_memcpy_fromio(cx, str, cx->enc_mem + mb->args[1], 252); 1031c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil str[252] = 0; 1041c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil } 1051c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil cx18_mb_ack(cx, mb); 1061c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil CX18_DEBUG_INFO("%x %s\n", mb->args[0], str); 1071c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil p = strchr(str, '.'); 1081c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if (!test_bit(CX18_F_I_LOADED_FW, &cx->i_flags) && p && p > str) 1091c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil CX18_INFO("FW version: %s\n", p - 1); 1101c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil} 1111c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 1121c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuilstatic void hpu_cmd(struct cx18 *cx, u32 sw1) 1131c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil{ 1141c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil struct cx18_mailbox mb; 1151c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 1161c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if (sw1 & IRQ_CPU_TO_EPU) { 117b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls cx18_memcpy_fromio(cx, &mb, &cx->scb->cpu2epu_mb, sizeof(mb)); 1181c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil mb.error = 0; 1191c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 1201c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil switch (mb.cmd) { 1211c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil case CX18_EPU_DMA_DONE: 1221c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil epu_dma_done(cx, &mb); 1231c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil break; 1241c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil case CX18_EPU_DEBUG: 1251c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil epu_debug(cx, &mb); 1261c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil break; 1271c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil default: 1281c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil CX18_WARN("Unexpected mailbox command %08x\n", mb.cmd); 1291c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil break; 1301c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil } 1311c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil } 1321c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if (sw1 & (IRQ_APU_TO_EPU | IRQ_HPU_TO_EPU)) 1331c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil CX18_WARN("Unexpected interrupt %08x\n", sw1); 1341c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil} 1351c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 1361c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuilirqreturn_t cx18_irq_handler(int irq, void *dev_id) 1371c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil{ 1381c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil struct cx18 *cx = (struct cx18 *)dev_id; 1391c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil u32 sw1, sw1_mask; 1401c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil u32 sw2, sw2_mask; 1411c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil u32 hw2, hw2_mask; 1421c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 1431c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil spin_lock(&cx->dma_reg_lock); 1441c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 145b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls sw1_mask = cx18_read_reg(cx, SW1_INT_ENABLE_PCI) | IRQ_EPU_TO_HPU; 146b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls sw1 = cx18_read_reg(cx, SW1_INT_STATUS) & sw1_mask; 147f056d29eebd2c8800cf42528ba0470c77a928821Andy Walls sw2_mask = cx18_read_reg(cx, SW2_INT_ENABLE_PCI) | IRQ_EPU_TO_HPU_ACK; 148f056d29eebd2c8800cf42528ba0470c77a928821Andy Walls sw2 = cx18_read_reg(cx, SW2_INT_STATUS) & sw2_mask; 149f056d29eebd2c8800cf42528ba0470c77a928821Andy Walls hw2_mask = cx18_read_reg(cx, HW2_INT_MASK5_PCI); 150f056d29eebd2c8800cf42528ba0470c77a928821Andy Walls hw2 = cx18_read_reg(cx, HW2_INT_CLR_STATUS) & hw2_mask; 1511c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 152f056d29eebd2c8800cf42528ba0470c77a928821Andy Walls if (sw1) 153f056d29eebd2c8800cf42528ba0470c77a928821Andy Walls cx18_write_reg_expect(cx, sw1, SW1_INT_STATUS, ~sw1, sw1); 154f056d29eebd2c8800cf42528ba0470c77a928821Andy Walls if (sw2) 155f056d29eebd2c8800cf42528ba0470c77a928821Andy Walls cx18_write_reg_expect(cx, sw2, SW2_INT_STATUS, ~sw2, sw2); 156f056d29eebd2c8800cf42528ba0470c77a928821Andy Walls if (hw2) 157f056d29eebd2c8800cf42528ba0470c77a928821Andy Walls cx18_write_reg_expect(cx, hw2, HW2_INT_CLR_STATUS, ~hw2, hw2); 1581c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 1591c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if (sw1 || sw2 || hw2) 1601c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil CX18_DEBUG_HI_IRQ("SW1: %x SW2: %x HW2: %x\n", sw1, sw2, hw2); 1611c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 1621c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil /* To do: interrupt-based I2C handling 1631c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if (hw2 & 0x00c00000) { 1641c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil } 1651c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil */ 1661c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 1671c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if (sw2) { 168b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls if (sw2 & (cx18_readl(cx, &cx->scb->cpu2hpu_irq_ack) | 169b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls cx18_readl(cx, &cx->scb->cpu2epu_irq_ack))) 1701c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil wake_up(&cx->mb_cpu_waitq); 171b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls if (sw2 & (cx18_readl(cx, &cx->scb->apu2hpu_irq_ack) | 172b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls cx18_readl(cx, &cx->scb->apu2epu_irq_ack))) 1731c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil wake_up(&cx->mb_apu_waitq); 174b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls if (sw2 & cx18_readl(cx, &cx->scb->epu2hpu_irq_ack)) 1751c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil wake_up(&cx->mb_epu_waitq); 176b1526421eac9a912b2cda7e147f1da2aa31be278Andy Walls if (sw2 & cx18_readl(cx, &cx->scb->hpu2epu_irq_ack)) 1771c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil wake_up(&cx->mb_hpu_waitq); 1781c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil } 1791c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 1801c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil if (sw1) 1811c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil hpu_cmd(cx, sw1); 1821c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil spin_unlock(&cx->dma_reg_lock); 1831c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil 184f056d29eebd2c8800cf42528ba0470c77a928821Andy Walls return (sw1 || sw2 || hw2) ? IRQ_HANDLED : IRQ_NONE; 1851c1e45d17b663d4749af456ab7c2fc1f36405ef8Hans Verkuil} 186