+++ /dev/null
-/*
- * video1394.c - video driver for OHCI 1394 boards
- * Copyright (C)1999,2000 Sebastien Rougeaux <sebastien.rougeaux@anu.edu.au>
- * Peter Schlaile <udbz@rz.uni-karlsruhe.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- * NOTES:
- *
- * ioctl return codes:
- * EFAULT is only for invalid address for the argp
- * EINVAL for out of range values
- * EBUSY when trying to use an already used resource
- * ESRCH when trying to free/stop a not used resource
- * EAGAIN for resource allocation failure that could perhaps succeed later
- * ENOTTY for unsupported ioctl request
- *
- */
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/wait.h>
-#include <linux/errno.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/fs.h>
-#include <linux/poll.h>
-#include <linux/delay.h>
-#include <linux/bitops.h>
-#include <linux/types.h>
-#include <linux/vmalloc.h>
-#include <linux/timex.h>
-#include <linux/mm.h>
-#include <linux/compat.h>
-#include <linux/cdev.h>
-
-#include "dma.h"
-#include "highlevel.h"
-#include "hosts.h"
-#include "ieee1394.h"
-#include "ieee1394_core.h"
-#include "ieee1394_hotplug.h"
-#include "ieee1394_types.h"
-#include "nodemgr.h"
-#include "ohci1394.h"
-#include "video1394.h"
-
-#define ISO_CHANNELS 64
-
-struct it_dma_prg {
- struct dma_cmd begin;
- quadlet_t data[4];
- struct dma_cmd end;
- quadlet_t pad[4]; /* FIXME: quick hack for memory alignment */
-};
-
-struct dma_iso_ctx {
- struct ti_ohci *ohci;
- int type; /* OHCI_ISO_TRANSMIT or OHCI_ISO_RECEIVE */
- struct ohci1394_iso_tasklet iso_tasklet;
- int channel;
- int ctx;
- int last_buffer;
- int * next_buffer; /* For ISO Transmit of video packets
- to write the correct SYT field
- into the next block */
- unsigned int num_desc;
- unsigned int buf_size;
- unsigned int frame_size;
- unsigned int packet_size;
- unsigned int left_size;
- unsigned int nb_cmd;
-
- struct dma_region dma;
-
- struct dma_prog_region *prg_reg;
-
- struct dma_cmd **ir_prg;
- struct it_dma_prg **it_prg;
-
- unsigned int *buffer_status;
- unsigned int *buffer_prg_assignment;
- struct timeval *buffer_time; /* time when the buffer was received */
- unsigned int *last_used_cmd; /* For ISO Transmit with
- variable sized packets only ! */
- int ctrlClear;
- int ctrlSet;
- int cmdPtr;
- int ctxMatch;
- wait_queue_head_t waitq;
- spinlock_t lock;
- unsigned int syt_offset;
- int flags;
-
- struct list_head link;
-};
-
-
-struct file_ctx {
- struct ti_ohci *ohci;
- struct list_head context_list;
- struct dma_iso_ctx *current_ctx;
-};
-
-#ifdef CONFIG_IEEE1394_VERBOSEDEBUG
-#define VIDEO1394_DEBUG
-#endif
-
-#ifdef DBGMSG
-#undef DBGMSG
-#endif
-
-#ifdef VIDEO1394_DEBUG
-#define DBGMSG(card, fmt, args...) \
-printk(KERN_INFO "video1394_%d: " fmt "\n" , card , ## args)
-#else
-#define DBGMSG(card, fmt, args...) do {} while (0)
-#endif
-
-/* print general (card independent) information */
-#define PRINT_G(level, fmt, args...) \
-printk(level "video1394: " fmt "\n" , ## args)
-
-/* print card specific information */
-#define PRINT(level, card, fmt, args...) \
-printk(level "video1394_%d: " fmt "\n" , card , ## args)
-
-static void wakeup_dma_ir_ctx(unsigned long l);
-static void wakeup_dma_it_ctx(unsigned long l);
-
-static struct hpsb_highlevel video1394_highlevel;
-
-static int free_dma_iso_ctx(struct dma_iso_ctx *d)
-{
- int i;
-
- DBGMSG(d->ohci->host->id, "Freeing dma_iso_ctx %d", d->ctx);
-
- ohci1394_stop_context(d->ohci, d->ctrlClear, NULL);
- if (d->iso_tasklet.link.next != NULL)
- ohci1394_unregister_iso_tasklet(d->ohci, &d->iso_tasklet);
-
- dma_region_free(&d->dma);
-
- if (d->prg_reg) {
- for (i = 0; i < d->num_desc; i++)
- dma_prog_region_free(&d->prg_reg[i]);
- kfree(d->prg_reg);
- }
-
- kfree(d->ir_prg);
- kfree(d->it_prg);
- kfree(d->buffer_status);
- kfree(d->buffer_prg_assignment);
- kfree(d->buffer_time);
- kfree(d->last_used_cmd);
- kfree(d->next_buffer);
- list_del(&d->link);
- kfree(d);
-
- return 0;
-}
-
-static struct dma_iso_ctx *
-alloc_dma_iso_ctx(struct ti_ohci *ohci, int type, int num_desc,
- int buf_size, int channel, unsigned int packet_size)
-{
- struct dma_iso_ctx *d;
- int i;
-
- d = kzalloc(sizeof(*d), GFP_KERNEL);
- if (!d) {
- PRINT(KERN_ERR, ohci->host->id, "Failed to allocate dma_iso_ctx");
- return NULL;
- }
-
- d->ohci = ohci;
- d->type = type;
- d->channel = channel;
- d->num_desc = num_desc;
- d->frame_size = buf_size;
- d->buf_size = PAGE_ALIGN(buf_size);
- d->last_buffer = -1;
- INIT_LIST_HEAD(&d->link);
- init_waitqueue_head(&d->waitq);
-
- /* Init the regions for easy cleanup */
- dma_region_init(&d->dma);
-
- if (dma_region_alloc(&d->dma, (d->num_desc - 1) * d->buf_size, ohci->dev,
- PCI_DMA_BIDIRECTIONAL)) {
- PRINT(KERN_ERR, ohci->host->id, "Failed to allocate dma buffer");
- free_dma_iso_ctx(d);
- return NULL;
- }
-
- if (type == OHCI_ISO_RECEIVE)
- ohci1394_init_iso_tasklet(&d->iso_tasklet, type,
- wakeup_dma_ir_ctx,
- (unsigned long) d);
- else
- ohci1394_init_iso_tasklet(&d->iso_tasklet, type,
- wakeup_dma_it_ctx,
- (unsigned long) d);
-
- if (ohci1394_register_iso_tasklet(ohci, &d->iso_tasklet) < 0) {
- PRINT(KERN_ERR, ohci->host->id, "no free iso %s contexts",
- type == OHCI_ISO_RECEIVE ? "receive" : "transmit");
- free_dma_iso_ctx(d);
- return NULL;
- }
- d->ctx = d->iso_tasklet.context;
-
- d->prg_reg = kmalloc(d->num_desc * sizeof(*d->prg_reg), GFP_KERNEL);
- if (!d->prg_reg) {
- PRINT(KERN_ERR, ohci->host->id, "Failed to allocate ir prg regs");
- free_dma_iso_ctx(d);
- return NULL;
- }
- /* Makes for easier cleanup */
- for (i = 0; i < d->num_desc; i++)
- dma_prog_region_init(&d->prg_reg[i]);
-
- if (type == OHCI_ISO_RECEIVE) {
- d->ctrlSet = OHCI1394_IsoRcvContextControlSet+32*d->ctx;
- d->ctrlClear = OHCI1394_IsoRcvContextControlClear+32*d->ctx;
- d->cmdPtr = OHCI1394_IsoRcvCommandPtr+32*d->ctx;
- d->ctxMatch = OHCI1394_IsoRcvContextMatch+32*d->ctx;
-
- d->ir_prg = kzalloc(d->num_desc * sizeof(*d->ir_prg),
- GFP_KERNEL);
-
- if (!d->ir_prg) {
- PRINT(KERN_ERR, ohci->host->id, "Failed to allocate dma ir prg");
- free_dma_iso_ctx(d);
- return NULL;
- }
-
- d->nb_cmd = d->buf_size / PAGE_SIZE + 1;
- d->left_size = (d->frame_size % PAGE_SIZE) ?
- d->frame_size % PAGE_SIZE : PAGE_SIZE;
-
- for (i = 0;i < d->num_desc; i++) {
- if (dma_prog_region_alloc(&d->prg_reg[i], d->nb_cmd *
- sizeof(struct dma_cmd), ohci->dev)) {
- PRINT(KERN_ERR, ohci->host->id, "Failed to allocate dma ir prg");
- free_dma_iso_ctx(d);
- return NULL;
- }
- d->ir_prg[i] = (struct dma_cmd *)d->prg_reg[i].kvirt;
- }
-
- } else { /* OHCI_ISO_TRANSMIT */
- d->ctrlSet = OHCI1394_IsoXmitContextControlSet+16*d->ctx;
- d->ctrlClear = OHCI1394_IsoXmitContextControlClear+16*d->ctx;
- d->cmdPtr = OHCI1394_IsoXmitCommandPtr+16*d->ctx;
-
- d->it_prg = kzalloc(d->num_desc * sizeof(*d->it_prg),
- GFP_KERNEL);
-
- if (!d->it_prg) {
- PRINT(KERN_ERR, ohci->host->id,
- "Failed to allocate dma it prg");
- free_dma_iso_ctx(d);
- return NULL;
- }
-
- d->packet_size = packet_size;
-
- if (PAGE_SIZE % packet_size || packet_size>4096) {
- PRINT(KERN_ERR, ohci->host->id,
- "Packet size %d (page_size: %ld) "
- "not yet supported\n",
- packet_size, PAGE_SIZE);
- free_dma_iso_ctx(d);
- return NULL;
- }
-
- d->nb_cmd = d->frame_size / d->packet_size;
- if (d->frame_size % d->packet_size) {
- d->nb_cmd++;
- d->left_size = d->frame_size % d->packet_size;
- } else
- d->left_size = d->packet_size;
-
- for (i = 0; i < d->num_desc; i++) {
- if (dma_prog_region_alloc(&d->prg_reg[i], d->nb_cmd *
- sizeof(struct it_dma_prg), ohci->dev)) {
- PRINT(KERN_ERR, ohci->host->id, "Failed to allocate dma it prg");
- free_dma_iso_ctx(d);
- return NULL;
- }
- d->it_prg[i] = (struct it_dma_prg *)d->prg_reg[i].kvirt;
- }
- }
-
- d->buffer_status =
- kzalloc(d->num_desc * sizeof(*d->buffer_status), GFP_KERNEL);
- d->buffer_prg_assignment =
- kzalloc(d->num_desc * sizeof(*d->buffer_prg_assignment), GFP_KERNEL);
- d->buffer_time =
- kzalloc(d->num_desc * sizeof(*d->buffer_time), GFP_KERNEL);
- d->last_used_cmd =
- kzalloc(d->num_desc * sizeof(*d->last_used_cmd), GFP_KERNEL);
- d->next_buffer =
- kzalloc(d->num_desc * sizeof(*d->next_buffer), GFP_KERNEL);
-
- if (!d->buffer_status || !d->buffer_prg_assignment || !d->buffer_time ||
- !d->last_used_cmd || !d->next_buffer) {
- PRINT(KERN_ERR, ohci->host->id,
- "Failed to allocate dma_iso_ctx member");
- free_dma_iso_ctx(d);
- return NULL;
- }
-
- spin_lock_init(&d->lock);
-
- DBGMSG(ohci->host->id, "Iso %s DMA: %d buffers "
- "of size %d allocated for a frame size %d, each with %d prgs",
- (type == OHCI_ISO_RECEIVE) ? "receive" : "transmit",
- d->num_desc - 1, d->buf_size, d->frame_size, d->nb_cmd);
-
- return d;
-}
-
-static void reset_ir_status(struct dma_iso_ctx *d, int n)
-{
- int i;
- d->ir_prg[n][0].status = cpu_to_le32(4);
- d->ir_prg[n][1].status = cpu_to_le32(PAGE_SIZE-4);
- for (i = 2; i < d->nb_cmd - 1; i++)
- d->ir_prg[n][i].status = cpu_to_le32(PAGE_SIZE);
- d->ir_prg[n][i].status = cpu_to_le32(d->left_size);
-}
-
-static void reprogram_dma_ir_prg(struct dma_iso_ctx *d, int n, int buffer, int flags)
-{
- struct dma_cmd *ir_prg = d->ir_prg[n];
- unsigned long buf = (unsigned long)d->dma.kvirt + buffer * d->buf_size;
- int i;
-
- d->buffer_prg_assignment[n] = buffer;
-
- ir_prg[0].address = cpu_to_le32(dma_region_offset_to_bus(&d->dma, buf -
- (unsigned long)d->dma.kvirt));
- ir_prg[1].address = cpu_to_le32(dma_region_offset_to_bus(&d->dma,
- (buf + 4) - (unsigned long)d->dma.kvirt));
-
- for (i=2;i<d->nb_cmd-1;i++) {
- ir_prg[i].address = cpu_to_le32(dma_region_offset_to_bus(&d->dma,
- (buf+(i-1)*PAGE_SIZE) -
- (unsigned long)d->dma.kvirt));
- }
-
- ir_prg[i].control = cpu_to_le32(DMA_CTL_INPUT_MORE | DMA_CTL_UPDATE |
- DMA_CTL_IRQ | DMA_CTL_BRANCH | d->left_size);
- ir_prg[i].address = cpu_to_le32(dma_region_offset_to_bus(&d->dma,
- (buf+(i-1)*PAGE_SIZE) - (unsigned long)d->dma.kvirt));
-}
-
-static void initialize_dma_ir_prg(struct dma_iso_ctx *d, int n, int flags)
-{
- struct dma_cmd *ir_prg = d->ir_prg[n];
- struct dma_prog_region *ir_reg = &d->prg_reg[n];
- unsigned long buf = (unsigned long)d->dma.kvirt;
- int i;
-
- /* the first descriptor will read only 4 bytes */
- ir_prg[0].control = cpu_to_le32(DMA_CTL_INPUT_MORE | DMA_CTL_UPDATE |
- DMA_CTL_BRANCH | 4);
-
- /* set the sync flag */
- if (flags & VIDEO1394_SYNC_FRAMES)
- ir_prg[0].control |= cpu_to_le32(DMA_CTL_WAIT);
-
- ir_prg[0].address = cpu_to_le32(dma_region_offset_to_bus(&d->dma, buf -
- (unsigned long)d->dma.kvirt));
- ir_prg[0].branchAddress = cpu_to_le32((dma_prog_region_offset_to_bus(ir_reg,
- 1 * sizeof(struct dma_cmd)) & 0xfffffff0) | 0x1);
-
- /* If there is *not* only one DMA page per frame (hence, d->nb_cmd==2) */
- if (d->nb_cmd > 2) {
- /* The second descriptor will read PAGE_SIZE-4 bytes */
- ir_prg[1].control = cpu_to_le32(DMA_CTL_INPUT_MORE | DMA_CTL_UPDATE |
- DMA_CTL_BRANCH | (PAGE_SIZE-4));
- ir_prg[1].address = cpu_to_le32(dma_region_offset_to_bus(&d->dma, (buf + 4) -
- (unsigned long)d->dma.kvirt));
- ir_prg[1].branchAddress = cpu_to_le32((dma_prog_region_offset_to_bus(ir_reg,
- 2 * sizeof(struct dma_cmd)) & 0xfffffff0) | 0x1);
-
- for (i = 2; i < d->nb_cmd - 1; i++) {
- ir_prg[i].control = cpu_to_le32(DMA_CTL_INPUT_MORE | DMA_CTL_UPDATE |
- DMA_CTL_BRANCH | PAGE_SIZE);
- ir_prg[i].address = cpu_to_le32(dma_region_offset_to_bus(&d->dma,
- (buf+(i-1)*PAGE_SIZE) -
- (unsigned long)d->dma.kvirt));
-
- ir_prg[i].branchAddress =
- cpu_to_le32((dma_prog_region_offset_to_bus(ir_reg,
- (i + 1) * sizeof(struct dma_cmd)) & 0xfffffff0) | 0x1);
- }
-
- /* The last descriptor will generate an interrupt */
- ir_prg[i].control = cpu_to_le32(DMA_CTL_INPUT_MORE | DMA_CTL_UPDATE |
- DMA_CTL_IRQ | DMA_CTL_BRANCH | d->left_size);
- ir_prg[i].address = cpu_to_le32(dma_region_offset_to_bus(&d->dma,
- (buf+(i-1)*PAGE_SIZE) -
- (unsigned long)d->dma.kvirt));
- } else {
- /* Only one DMA page is used. Read d->left_size immediately and */
- /* generate an interrupt as this is also the last page. */
- ir_prg[1].control = cpu_to_le32(DMA_CTL_INPUT_MORE | DMA_CTL_UPDATE |
- DMA_CTL_IRQ | DMA_CTL_BRANCH | (d->left_size-4));
- ir_prg[1].address = cpu_to_le32(dma_region_offset_to_bus(&d->dma,
- (buf + 4) - (unsigned long)d->dma.kvirt));
- }
-}
-
-static void initialize_dma_ir_ctx(struct dma_iso_ctx *d, int tag, int flags)
-{
- struct ti_ohci *ohci = (struct ti_ohci *)d->ohci;
- int i;
-
- d->flags = flags;
-
- ohci1394_stop_context(ohci, d->ctrlClear, NULL);
-
- for (i=0;i<d->num_desc;i++) {
- initialize_dma_ir_prg(d, i, flags);
- reset_ir_status(d, i);
- }
-
- /* reset the ctrl register */
- reg_write(ohci, d->ctrlClear, 0xf0000000);
-
- /* Set bufferFill */
- reg_write(ohci, d->ctrlSet, 0x80000000);
-
- /* Set isoch header */
- if (flags & VIDEO1394_INCLUDE_ISO_HEADERS)
- reg_write(ohci, d->ctrlSet, 0x40000000);
-
- /* Set the context match register to match on all tags,
- sync for sync tag, and listen to d->channel */
- reg_write(ohci, d->ctxMatch, 0xf0000000|((tag&0xf)<<8)|d->channel);
-
- /* Set up isoRecvIntMask to generate interrupts */
- reg_write(ohci, OHCI1394_IsoRecvIntMaskSet, 1<<d->ctx);
-}
-
-/* find which context is listening to this channel */
-static struct dma_iso_ctx *
-find_ctx(struct list_head *list, int type, int channel)
-{
- struct dma_iso_ctx *ctx;
-
- list_for_each_entry(ctx, list, link) {
- if (ctx->type == type && ctx->channel == channel)
- return ctx;
- }
-
- return NULL;
-}
-
-static void wakeup_dma_ir_ctx(unsigned long l)
-{
- struct dma_iso_ctx *d = (struct dma_iso_ctx *) l;
- int i;
-
- spin_lock(&d->lock);
-
- for (i = 0; i < d->num_desc; i++) {
- if (d->ir_prg[i][d->nb_cmd-1].status & cpu_to_le32(0xFFFF0000)) {
- reset_ir_status(d, i);
- d->buffer_status[d->buffer_prg_assignment[i]] = VIDEO1394_BUFFER_READY;
- do_gettimeofday(&d->buffer_time[d->buffer_prg_assignment[i]]);
- dma_region_sync_for_cpu(&d->dma,
- d->buffer_prg_assignment[i] * d->buf_size,
- d->buf_size);
- }
- }
-
- spin_unlock(&d->lock);
-
- if (waitqueue_active(&d->waitq))
- wake_up_interruptible(&d->waitq);
-}
-
-static inline void put_timestamp(struct ti_ohci *ohci, struct dma_iso_ctx * d,
- int n)
-{
- unsigned char* buf = d->dma.kvirt + n * d->buf_size;
- u32 cycleTimer;
- u32 timeStamp;
-
- if (n == -1) {
- return;
- }
-
- cycleTimer = reg_read(ohci, OHCI1394_IsochronousCycleTimer);
-
- timeStamp = ((cycleTimer & 0x0fff) + d->syt_offset); /* 11059 = 450 us */
- timeStamp = (timeStamp % 3072 + ((timeStamp / 3072) << 12)
- + (cycleTimer & 0xf000)) & 0xffff;
-
- buf[6] = timeStamp >> 8;
- buf[7] = timeStamp & 0xff;
-
- /* if first packet is empty packet, then put timestamp into the next full one too */
- if ( (le32_to_cpu(d->it_prg[n][0].data[1]) >>16) == 0x008) {
- buf += d->packet_size;
- buf[6] = timeStamp >> 8;
- buf[7] = timeStamp & 0xff;
- }
-
- /* do the next buffer frame too in case of irq latency */
- n = d->next_buffer[n];
- if (n == -1) {
- return;
- }
- buf = d->dma.kvirt + n * d->buf_size;
-
- timeStamp += (d->last_used_cmd[n] << 12) & 0xffff;
-
- buf[6] = timeStamp >> 8;
- buf[7] = timeStamp & 0xff;
-
- /* if first packet is empty packet, then put timestamp into the next full one too */
- if ( (le32_to_cpu(d->it_prg[n][0].data[1]) >>16) == 0x008) {
- buf += d->packet_size;
- buf[6] = timeStamp >> 8;
- buf[7] = timeStamp & 0xff;
- }
-
-#if 0
- printk("curr: %d, next: %d, cycleTimer: %08x timeStamp: %08x\n",
- curr, n, cycleTimer, timeStamp);
-#endif
-}
-
-static void wakeup_dma_it_ctx(unsigned long l)
-{
- struct dma_iso_ctx *d = (struct dma_iso_ctx *) l;
- struct ti_ohci *ohci = d->ohci;
- int i;
-
- spin_lock(&d->lock);
-
- for (i = 0; i < d->num_desc; i++) {
- if (d->it_prg[i][d->last_used_cmd[i]].end.status &
- cpu_to_le32(0xFFFF0000)) {
- int next = d->next_buffer[i];
- put_timestamp(ohci, d, next);
- d->it_prg[i][d->last_used_cmd[i]].end.status = 0;
- d->buffer_status[d->buffer_prg_assignment[i]] = VIDEO1394_BUFFER_READY;
- }
- }
-
- spin_unlock(&d->lock);
-
- if (waitqueue_active(&d->waitq))
- wake_up_interruptible(&d->waitq);
-}
-
-static void reprogram_dma_it_prg(struct dma_iso_ctx *d, int n, int buffer)
-{
- struct it_dma_prg *it_prg = d->it_prg[n];
- unsigned long buf = (unsigned long)d->dma.kvirt + buffer * d->buf_size;
- int i;
-
- d->buffer_prg_assignment[n] = buffer;
- for (i=0;i<d->nb_cmd;i++) {
- it_prg[i].end.address =
- cpu_to_le32(dma_region_offset_to_bus(&d->dma,
- (buf+i*d->packet_size) - (unsigned long)d->dma.kvirt));
- }
-}
-
-static void initialize_dma_it_prg(struct dma_iso_ctx *d, int n, int sync_tag)
-{
- struct it_dma_prg *it_prg = d->it_prg[n];
- struct dma_prog_region *it_reg = &d->prg_reg[n];
- unsigned long buf = (unsigned long)d->dma.kvirt;
- int i;
- d->last_used_cmd[n] = d->nb_cmd - 1;
- for (i=0;i<d->nb_cmd;i++) {
-
- it_prg[i].begin.control = cpu_to_le32(DMA_CTL_OUTPUT_MORE |
- DMA_CTL_IMMEDIATE | 8) ;
- it_prg[i].begin.address = 0;
-
- it_prg[i].begin.status = 0;
-
- it_prg[i].data[0] = cpu_to_le32(
- (IEEE1394_SPEED_100 << 16)
- | (/* tag */ 1 << 14)
- | (d->channel << 8)
- | (TCODE_ISO_DATA << 4));
- if (i==0) it_prg[i].data[0] |= cpu_to_le32(sync_tag);
- it_prg[i].data[1] = cpu_to_le32(d->packet_size << 16);
- it_prg[i].data[2] = 0;
- it_prg[i].data[3] = 0;
-
- it_prg[i].end.control = cpu_to_le32(DMA_CTL_OUTPUT_LAST |
- DMA_CTL_BRANCH);
- it_prg[i].end.address =
- cpu_to_le32(dma_region_offset_to_bus(&d->dma, (buf+i*d->packet_size) -
- (unsigned long)d->dma.kvirt));
-
- if (i<d->nb_cmd-1) {
- it_prg[i].end.control |= cpu_to_le32(d->packet_size);
- it_prg[i].begin.branchAddress =
- cpu_to_le32((dma_prog_region_offset_to_bus(it_reg, (i + 1) *
- sizeof(struct it_dma_prg)) & 0xfffffff0) | 0x3);
- it_prg[i].end.branchAddress =
- cpu_to_le32((dma_prog_region_offset_to_bus(it_reg, (i + 1) *
- sizeof(struct it_dma_prg)) & 0xfffffff0) | 0x3);
- } else {
- /* the last prg generates an interrupt */
- it_prg[i].end.control |= cpu_to_le32(DMA_CTL_UPDATE |
- DMA_CTL_IRQ | d->left_size);
- /* the last prg doesn't branch */
- it_prg[i].begin.branchAddress = 0;
- it_prg[i].end.branchAddress = 0;
- }
- it_prg[i].end.status = 0;
- }
-}
-
-static void initialize_dma_it_prg_var_packet_queue(
- struct dma_iso_ctx *d, int n, unsigned int * packet_sizes,
- struct ti_ohci *ohci)
-{
- struct it_dma_prg *it_prg = d->it_prg[n];
- struct dma_prog_region *it_reg = &d->prg_reg[n];
- int i;
-
-#if 0
- if (n != -1) {
- put_timestamp(ohci, d, n);
- }
-#endif
- d->last_used_cmd[n] = d->nb_cmd - 1;
-
- for (i = 0; i < d->nb_cmd; i++) {
- unsigned int size;
- if (packet_sizes[i] > d->packet_size) {
- size = d->packet_size;
- } else {
- size = packet_sizes[i];
- }
- it_prg[i].data[1] = cpu_to_le32(size << 16);
- it_prg[i].end.control = cpu_to_le32(DMA_CTL_OUTPUT_LAST | DMA_CTL_BRANCH);
-
- if (i < d->nb_cmd-1 && packet_sizes[i+1] != 0) {
- it_prg[i].end.control |= cpu_to_le32(size);
- it_prg[i].begin.branchAddress =
- cpu_to_le32((dma_prog_region_offset_to_bus(it_reg, (i + 1) *
- sizeof(struct it_dma_prg)) & 0xfffffff0) | 0x3);
- it_prg[i].end.branchAddress =
- cpu_to_le32((dma_prog_region_offset_to_bus(it_reg, (i + 1) *
- sizeof(struct it_dma_prg)) & 0xfffffff0) | 0x3);
- } else {
- /* the last prg generates an interrupt */
- it_prg[i].end.control |= cpu_to_le32(DMA_CTL_UPDATE |
- DMA_CTL_IRQ | size);
- /* the last prg doesn't branch */
- it_prg[i].begin.branchAddress = 0;
- it_prg[i].end.branchAddress = 0;
- d->last_used_cmd[n] = i;
- break;
- }
- }
-}
-
-static void initialize_dma_it_ctx(struct dma_iso_ctx *d, int sync_tag,
- unsigned int syt_offset, int flags)
-{
- struct ti_ohci *ohci = (struct ti_ohci *)d->ohci;
- int i;
-
- d->flags = flags;
- d->syt_offset = (syt_offset == 0 ? 11000 : syt_offset);
-
- ohci1394_stop_context(ohci, d->ctrlClear, NULL);
-
- for (i=0;i<d->num_desc;i++)
- initialize_dma_it_prg(d, i, sync_tag);
-
- /* Set up isoRecvIntMask to generate interrupts */
- reg_write(ohci, OHCI1394_IsoXmitIntMaskSet, 1<<d->ctx);
-}
-
-static inline unsigned video1394_buffer_state(struct dma_iso_ctx *d,
- unsigned int buffer)
-{
- unsigned long flags;
- unsigned int ret;
- spin_lock_irqsave(&d->lock, flags);
- ret = d->buffer_status[buffer];
- spin_unlock_irqrestore(&d->lock, flags);
- return ret;
-}
-
-static long video1394_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct file_ctx *ctx = file->private_data;
- struct ti_ohci *ohci = ctx->ohci;
- unsigned long flags;
- void __user *argp = (void __user *)arg;
-
- switch(cmd)
- {
- case VIDEO1394_IOC_LISTEN_CHANNEL:
- case VIDEO1394_IOC_TALK_CHANNEL:
- {
- struct video1394_mmap v;
- u64 mask;
- struct dma_iso_ctx *d;
- int i;
-
- if (copy_from_user(&v, argp, sizeof(v)))
- return -EFAULT;
-
- /* if channel < 0, find lowest available one */
- if (v.channel < 0) {
- mask = (u64)0x1;
- for (i=0; ; i++) {
- if (i == ISO_CHANNELS) {
- PRINT(KERN_ERR, ohci->host->id,
- "No free channel found");
- return -EAGAIN;
- }
- if (!(ohci->ISO_channel_usage & mask)) {
- v.channel = i;
- PRINT(KERN_INFO, ohci->host->id, "Found free channel %d", i);
- break;
- }
- mask = mask << 1;
- }
- } else if (v.channel >= ISO_CHANNELS) {
- PRINT(KERN_ERR, ohci->host->id,
- "Iso channel %d out of bounds", v.channel);
- return -EINVAL;
- } else {
- mask = (u64)0x1<<v.channel;
- }
- DBGMSG(ohci->host->id, "mask: %08X%08X usage: %08X%08X\n",
- (u32)(mask>>32),(u32)(mask&0xffffffff),
- (u32)(ohci->ISO_channel_usage>>32),
- (u32)(ohci->ISO_channel_usage&0xffffffff));
- if (ohci->ISO_channel_usage & mask) {
- PRINT(KERN_ERR, ohci->host->id,
- "Channel %d is already taken", v.channel);
- return -EBUSY;
- }
-
- if (v.buf_size == 0 || v.buf_size > VIDEO1394_MAX_SIZE) {
- PRINT(KERN_ERR, ohci->host->id,
- "Invalid %d length buffer requested",v.buf_size);
- return -EINVAL;
- }
-
- if (v.nb_buffers == 0 || v.nb_buffers > VIDEO1394_MAX_SIZE) {
- PRINT(KERN_ERR, ohci->host->id,
- "Invalid %d buffers requested",v.nb_buffers);
- return -EINVAL;
- }
-
- if (v.nb_buffers * v.buf_size > VIDEO1394_MAX_SIZE) {
- PRINT(KERN_ERR, ohci->host->id,
- "%d buffers of size %d bytes is too big",
- v.nb_buffers, v.buf_size);
- return -EINVAL;
- }
-
- if (cmd == VIDEO1394_IOC_LISTEN_CHANNEL) {
- d = alloc_dma_iso_ctx(ohci, OHCI_ISO_RECEIVE,
- v.nb_buffers + 1, v.buf_size,
- v.channel, 0);
-
- if (d == NULL) {
- PRINT(KERN_ERR, ohci->host->id,
- "Couldn't allocate ir context");
- return -EAGAIN;
- }
- initialize_dma_ir_ctx(d, v.sync_tag, v.flags);
-
- ctx->current_ctx = d;
-
- v.buf_size = d->buf_size;
- list_add_tail(&d->link, &ctx->context_list);
-
- DBGMSG(ohci->host->id,
- "iso context %d listen on channel %d",
- d->ctx, v.channel);
- }
- else {
- d = alloc_dma_iso_ctx(ohci, OHCI_ISO_TRANSMIT,
- v.nb_buffers + 1, v.buf_size,
- v.channel, v.packet_size);
-
- if (d == NULL) {
- PRINT(KERN_ERR, ohci->host->id,
- "Couldn't allocate it context");
- return -EAGAIN;
- }
- initialize_dma_it_ctx(d, v.sync_tag,
- v.syt_offset, v.flags);
-
- ctx->current_ctx = d;
-
- v.buf_size = d->buf_size;
-
- list_add_tail(&d->link, &ctx->context_list);
-
- DBGMSG(ohci->host->id,
- "Iso context %d talk on channel %d", d->ctx,
- v.channel);
- }
-
- if (copy_to_user(argp, &v, sizeof(v))) {
- /* FIXME : free allocated dma resources */
- return -EFAULT;
- }
-
- ohci->ISO_channel_usage |= mask;
-
- return 0;
- }
- case VIDEO1394_IOC_UNLISTEN_CHANNEL:
- case VIDEO1394_IOC_UNTALK_CHANNEL:
- {
- int channel;
- u64 mask;
- struct dma_iso_ctx *d;
-
- if (copy_from_user(&channel, argp, sizeof(int)))
- return -EFAULT;
-
- if (channel < 0 || channel >= ISO_CHANNELS) {
- PRINT(KERN_ERR, ohci->host->id,
- "Iso channel %d out of bound", channel);
- return -EINVAL;
- }
- mask = (u64)0x1<<channel;
- if (!(ohci->ISO_channel_usage & mask)) {
- PRINT(KERN_ERR, ohci->host->id,
- "Channel %d is not being used", channel);
- return -ESRCH;
- }
-
- /* Mark this channel as unused */
- ohci->ISO_channel_usage &= ~mask;
-
- if (cmd == VIDEO1394_IOC_UNLISTEN_CHANNEL)
- d = find_ctx(&ctx->context_list, OHCI_ISO_RECEIVE, channel);
- else
- d = find_ctx(&ctx->context_list, OHCI_ISO_TRANSMIT, channel);
-
- if (d == NULL) return -ESRCH;
- DBGMSG(ohci->host->id, "Iso context %d "
- "stop talking on channel %d", d->ctx, channel);
- free_dma_iso_ctx(d);
-
- return 0;
- }
- case VIDEO1394_IOC_LISTEN_QUEUE_BUFFER:
- {
- struct video1394_wait v;
- struct dma_iso_ctx *d;
- int next_prg;
-
- if (unlikely(copy_from_user(&v, argp, sizeof(v))))
- return -EFAULT;
-
- d = find_ctx(&ctx->context_list, OHCI_ISO_RECEIVE, v.channel);
- if (unlikely(d == NULL))
- return -EFAULT;
-
- if (unlikely(v.buffer >= d->num_desc - 1)) {
- PRINT(KERN_ERR, ohci->host->id,
- "Buffer %d out of range",v.buffer);
- return -EINVAL;
- }
-
- spin_lock_irqsave(&d->lock,flags);
-
- if (unlikely(d->buffer_status[v.buffer]==VIDEO1394_BUFFER_QUEUED)) {
- PRINT(KERN_ERR, ohci->host->id,
- "Buffer %d is already used",v.buffer);
- spin_unlock_irqrestore(&d->lock,flags);
- return -EBUSY;
- }
-
- d->buffer_status[v.buffer]=VIDEO1394_BUFFER_QUEUED;
-
- next_prg = (d->last_buffer + 1) % d->num_desc;
- if (d->last_buffer>=0)
- d->ir_prg[d->last_buffer][d->nb_cmd-1].branchAddress =
- cpu_to_le32((dma_prog_region_offset_to_bus(&d->prg_reg[next_prg], 0)
- & 0xfffffff0) | 0x1);
-
- d->last_buffer = next_prg;
- reprogram_dma_ir_prg(d, d->last_buffer, v.buffer, d->flags);
-
- d->ir_prg[d->last_buffer][d->nb_cmd-1].branchAddress = 0;
-
- spin_unlock_irqrestore(&d->lock,flags);
-
- if (!(reg_read(ohci, d->ctrlSet) & 0x8000))
- {
- DBGMSG(ohci->host->id, "Starting iso DMA ctx=%d",d->ctx);
-
- /* Tell the controller where the first program is */
- reg_write(ohci, d->cmdPtr,
- dma_prog_region_offset_to_bus(&d->prg_reg[d->last_buffer], 0) | 0x1);
-
- /* Run IR context */
- reg_write(ohci, d->ctrlSet, 0x8000);
- }
- else {
- /* Wake up dma context if necessary */
- if (!(reg_read(ohci, d->ctrlSet) & 0x400)) {
- DBGMSG(ohci->host->id,
- "Waking up iso dma ctx=%d", d->ctx);
- reg_write(ohci, d->ctrlSet, 0x1000);
- }
- }
- return 0;
-
- }
- case VIDEO1394_IOC_LISTEN_WAIT_BUFFER:
- case VIDEO1394_IOC_LISTEN_POLL_BUFFER:
- {
- struct video1394_wait v;
- struct dma_iso_ctx *d;
- int i = 0;
-
- if (unlikely(copy_from_user(&v, argp, sizeof(v))))
- return -EFAULT;
-
- d = find_ctx(&ctx->context_list, OHCI_ISO_RECEIVE, v.channel);
- if (unlikely(d == NULL))
- return -EFAULT;
-
- if (unlikely(v.buffer > d->num_desc - 1)) {
- PRINT(KERN_ERR, ohci->host->id,
- "Buffer %d out of range",v.buffer);
- return -EINVAL;
- }
-
- /*
- * I change the way it works so that it returns
- * the last received frame.
- */
- spin_lock_irqsave(&d->lock, flags);
- switch(d->buffer_status[v.buffer]) {
- case VIDEO1394_BUFFER_READY:
- d->buffer_status[v.buffer]=VIDEO1394_BUFFER_FREE;
- break;
- case VIDEO1394_BUFFER_QUEUED:
- if (cmd == VIDEO1394_IOC_LISTEN_POLL_BUFFER) {
- /* for polling, return error code EINTR */
- spin_unlock_irqrestore(&d->lock, flags);
- return -EINTR;
- }
-
- spin_unlock_irqrestore(&d->lock, flags);
- wait_event_interruptible(d->waitq,
- video1394_buffer_state(d, v.buffer) ==
- VIDEO1394_BUFFER_READY);
- if (signal_pending(current))
- return -EINTR;
- spin_lock_irqsave(&d->lock, flags);
- d->buffer_status[v.buffer]=VIDEO1394_BUFFER_FREE;
- break;
- default:
- PRINT(KERN_ERR, ohci->host->id,
- "Buffer %d is not queued",v.buffer);
- spin_unlock_irqrestore(&d->lock, flags);
- return -ESRCH;
- }
-
- /* set time of buffer */
- v.filltime = d->buffer_time[v.buffer];
-
- /*
- * Look ahead to see how many more buffers have been received
- */
- i=0;
- while (d->buffer_status[(v.buffer+1)%(d->num_desc - 1)]==
- VIDEO1394_BUFFER_READY) {
- v.buffer=(v.buffer+1)%(d->num_desc - 1);
- i++;
- }
- spin_unlock_irqrestore(&d->lock, flags);
-
- v.buffer=i;
- if (unlikely(copy_to_user(argp, &v, sizeof(v))))
- return -EFAULT;
-
- return 0;
- }
- case VIDEO1394_IOC_TALK_QUEUE_BUFFER:
- {
- struct video1394_wait v;
- unsigned int *psizes = NULL;
- struct dma_iso_ctx *d;
- int next_prg;
-
- if (copy_from_user(&v, argp, sizeof(v)))
- return -EFAULT;
-
- d = find_ctx(&ctx->context_list, OHCI_ISO_TRANSMIT, v.channel);
- if (d == NULL) return -EFAULT;
-
- if (v.buffer >= d->num_desc - 1) {
- PRINT(KERN_ERR, ohci->host->id,
- "Buffer %d out of range",v.buffer);
- return -EINVAL;
- }
-
- if (d->flags & VIDEO1394_VARIABLE_PACKET_SIZE) {
- int buf_size = d->nb_cmd * sizeof(*psizes);
- struct video1394_queue_variable __user *p = argp;
- unsigned int __user *qv;
-
- if (get_user(qv, &p->packet_sizes))
- return -EFAULT;
-
- psizes = memdup_user(qv, buf_size);
- if (IS_ERR(psizes))
- return PTR_ERR(psizes);
- }
-
- spin_lock_irqsave(&d->lock,flags);
-
- /* last_buffer is last_prg */
- next_prg = (d->last_buffer + 1) % d->num_desc;
- if (d->buffer_status[v.buffer]!=VIDEO1394_BUFFER_FREE) {
- PRINT(KERN_ERR, ohci->host->id,
- "Buffer %d is already used",v.buffer);
- spin_unlock_irqrestore(&d->lock,flags);
- kfree(psizes);
- return -EBUSY;
- }
-
- if (d->flags & VIDEO1394_VARIABLE_PACKET_SIZE) {
- initialize_dma_it_prg_var_packet_queue(
- d, next_prg, psizes, ohci);
- }
-
- d->buffer_status[v.buffer]=VIDEO1394_BUFFER_QUEUED;
-
- if (d->last_buffer >= 0) {
- d->it_prg[d->last_buffer]
- [ d->last_used_cmd[d->last_buffer] ].end.branchAddress =
- cpu_to_le32((dma_prog_region_offset_to_bus(&d->prg_reg[next_prg],
- 0) & 0xfffffff0) | 0x3);
-
- d->it_prg[d->last_buffer]
- [ d->last_used_cmd[d->last_buffer] ].begin.branchAddress =
- cpu_to_le32((dma_prog_region_offset_to_bus(&d->prg_reg[next_prg],
- 0) & 0xfffffff0) | 0x3);
- d->next_buffer[d->last_buffer] = (v.buffer + 1) % (d->num_desc - 1);
- }
- d->last_buffer = next_prg;
- reprogram_dma_it_prg(d, d->last_buffer, v.buffer);
- d->next_buffer[d->last_buffer] = -1;
-
- d->it_prg[d->last_buffer][d->last_used_cmd[d->last_buffer]].end.branchAddress = 0;
-
- spin_unlock_irqrestore(&d->lock,flags);
-
- if (!(reg_read(ohci, d->ctrlSet) & 0x8000))
- {
- DBGMSG(ohci->host->id, "Starting iso transmit DMA ctx=%d",
- d->ctx);
- put_timestamp(ohci, d, d->last_buffer);
- dma_region_sync_for_device(&d->dma,
- v.buffer * d->buf_size, d->buf_size);
-
- /* Tell the controller where the first program is */
- reg_write(ohci, d->cmdPtr,
- dma_prog_region_offset_to_bus(&d->prg_reg[next_prg], 0) | 0x3);
-
- /* Run IT context */
- reg_write(ohci, d->ctrlSet, 0x8000);
- }
- else {
- /* Wake up dma context if necessary */
- if (!(reg_read(ohci, d->ctrlSet) & 0x400)) {
- DBGMSG(ohci->host->id,
- "Waking up iso transmit dma ctx=%d",
- d->ctx);
- put_timestamp(ohci, d, d->last_buffer);
- dma_region_sync_for_device(&d->dma,
- v.buffer * d->buf_size, d->buf_size);
-
- reg_write(ohci, d->ctrlSet, 0x1000);
- }
- }
-
- kfree(psizes);
- return 0;
-
- }
- case VIDEO1394_IOC_TALK_WAIT_BUFFER:
- {
- struct video1394_wait v;
- struct dma_iso_ctx *d;
-
- if (copy_from_user(&v, argp, sizeof(v)))
- return -EFAULT;
-
- d = find_ctx(&ctx->context_list, OHCI_ISO_TRANSMIT, v.channel);
- if (d == NULL) return -EFAULT;
-
- if (v.buffer >= d->num_desc - 1) {
- PRINT(KERN_ERR, ohci->host->id,
- "Buffer %d out of range",v.buffer);
- return -EINVAL;
- }
-
- switch(d->buffer_status[v.buffer]) {
- case VIDEO1394_BUFFER_READY:
- d->buffer_status[v.buffer]=VIDEO1394_BUFFER_FREE;
- return 0;
- case VIDEO1394_BUFFER_QUEUED:
- wait_event_interruptible(d->waitq,
- (d->buffer_status[v.buffer] == VIDEO1394_BUFFER_READY));
- if (signal_pending(current))
- return -EINTR;
- d->buffer_status[v.buffer]=VIDEO1394_BUFFER_FREE;
- return 0;
- default:
- PRINT(KERN_ERR, ohci->host->id,
- "Buffer %d is not queued",v.buffer);
- return -ESRCH;
- }
- }
- default:
- return -ENOTTY;
- }
-}
-
-/*
- * This maps the vmalloced and reserved buffer to user space.
- *
- * FIXME:
- * - PAGE_READONLY should suffice!?
- * - remap_pfn_range is kind of inefficient for page by page remapping.
- * But e.g. pte_alloc() does not work in modules ... :-(
- */
-
-static int video1394_mmap(struct file *file, struct vm_area_struct *vma)
-{
- struct file_ctx *ctx = file->private_data;
-
- if (ctx->current_ctx == NULL) {
- PRINT(KERN_ERR, ctx->ohci->host->id,
- "Current iso context not set");
- return -EINVAL;
- }
-
- return dma_region_mmap(&ctx->current_ctx->dma, file, vma);
-}
-
-static unsigned int video1394_poll(struct file *file, poll_table *pt)
-{
- struct file_ctx *ctx;
- unsigned int mask = 0;
- unsigned long flags;
- struct dma_iso_ctx *d;
- int i;
-
- ctx = file->private_data;
- d = ctx->current_ctx;
- if (d == NULL) {
- PRINT(KERN_ERR, ctx->ohci->host->id,
- "Current iso context not set");
- return POLLERR;
- }
-
- poll_wait(file, &d->waitq, pt);
-
- spin_lock_irqsave(&d->lock, flags);
- for (i = 0; i < d->num_desc; i++) {
- if (d->buffer_status[i] == VIDEO1394_BUFFER_READY) {
- mask |= POLLIN | POLLRDNORM;
- break;
- }
- }
- spin_unlock_irqrestore(&d->lock, flags);
-
- return mask;
-}
-
-static int video1394_open(struct inode *inode, struct file *file)
-{
- int i = ieee1394_file_to_instance(file);
- struct ti_ohci *ohci;
- struct file_ctx *ctx;
-
- ohci = hpsb_get_hostinfo_bykey(&video1394_highlevel, i);
- if (ohci == NULL)
- return -EIO;
-
- ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
- if (!ctx) {
- PRINT(KERN_ERR, ohci->host->id, "Cannot malloc file_ctx");
- return -ENOMEM;
- }
-
- ctx->ohci = ohci;
- INIT_LIST_HEAD(&ctx->context_list);
- ctx->current_ctx = NULL;
- file->private_data = ctx;
-
- return nonseekable_open(inode, file);
-}
-
-static int video1394_release(struct inode *inode, struct file *file)
-{
- struct file_ctx *ctx = file->private_data;
- struct ti_ohci *ohci = ctx->ohci;
- struct list_head *lh, *next;
- u64 mask;
-
- list_for_each_safe(lh, next, &ctx->context_list) {
- struct dma_iso_ctx *d;
- d = list_entry(lh, struct dma_iso_ctx, link);
- mask = (u64) 1 << d->channel;
-
- if (!(ohci->ISO_channel_usage & mask))
- PRINT(KERN_ERR, ohci->host->id, "On release: Channel %d "
- "is not being used", d->channel);
- else
- ohci->ISO_channel_usage &= ~mask;
- DBGMSG(ohci->host->id, "On release: Iso %s context "
- "%d stop listening on channel %d",
- d->type == OHCI_ISO_RECEIVE ? "receive" : "transmit",
- d->ctx, d->channel);
- free_dma_iso_ctx(d);
- }
-
- kfree(ctx);
- file->private_data = NULL;
-
- return 0;
-}
-
-#ifdef CONFIG_COMPAT
-static long video1394_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
-#endif
-
-static struct cdev video1394_cdev;
-static const struct file_operations video1394_fops=
-{
- .owner = THIS_MODULE,
- .unlocked_ioctl = video1394_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = video1394_compat_ioctl,
-#endif
- .poll = video1394_poll,
- .mmap = video1394_mmap,
- .open = video1394_open,
- .release = video1394_release,
- .llseek = no_llseek,
-};
-
-/*** HOTPLUG STUFF **********************************************************/
-/*
- * Export information about protocols/devices supported by this driver.
- */
-#ifdef MODULE
-static const struct ieee1394_device_id video1394_id_table[] = {
- {
- .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
- .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff,
- .version = CAMERA_SW_VERSION_ENTRY & 0xffffff
- },
- {
- .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
- .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff,
- .version = (CAMERA_SW_VERSION_ENTRY + 1) & 0xffffff
- },
- {
- .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
- .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff,
- .version = (CAMERA_SW_VERSION_ENTRY + 2) & 0xffffff
- },
- { }
-};
-
-MODULE_DEVICE_TABLE(ieee1394, video1394_id_table);
-#endif /* MODULE */
-
-static struct hpsb_protocol_driver video1394_driver = {
- .name = VIDEO1394_DRIVER_NAME,
-};
-
-
-static void video1394_add_host (struct hpsb_host *host)
-{
- struct ti_ohci *ohci;
- int minor;
-
- /* We only work with the OHCI-1394 driver */
- if (strcmp(host->driver->name, OHCI1394_DRIVER_NAME))
- return;
-
- ohci = (struct ti_ohci *)host->hostdata;
-
- if (!hpsb_create_hostinfo(&video1394_highlevel, host, 0)) {
- PRINT(KERN_ERR, ohci->host->id, "Cannot allocate hostinfo");
- return;
- }
-
- hpsb_set_hostinfo(&video1394_highlevel, host, ohci);
- hpsb_set_hostinfo_key(&video1394_highlevel, host, ohci->host->id);
-
- minor = IEEE1394_MINOR_BLOCK_VIDEO1394 * 16 + ohci->host->id;
- device_create(hpsb_protocol_class, NULL, MKDEV(IEEE1394_MAJOR, minor),
- NULL, "%s-%d", VIDEO1394_DRIVER_NAME, ohci->host->id);
-}
-
-
-static void video1394_remove_host (struct hpsb_host *host)
-{
- struct ti_ohci *ohci = hpsb_get_hostinfo(&video1394_highlevel, host);
-
- if (ohci)
- device_destroy(hpsb_protocol_class, MKDEV(IEEE1394_MAJOR,
- IEEE1394_MINOR_BLOCK_VIDEO1394 * 16 + ohci->host->id));
- return;
-}
-
-
-static struct hpsb_highlevel video1394_highlevel = {
- .name = VIDEO1394_DRIVER_NAME,
- .add_host = video1394_add_host,
- .remove_host = video1394_remove_host,
-};
-
-MODULE_AUTHOR("Sebastien Rougeaux <sebastien.rougeaux@anu.edu.au>");
-MODULE_DESCRIPTION("driver for digital video on OHCI board");
-MODULE_SUPPORTED_DEVICE(VIDEO1394_DRIVER_NAME);
-MODULE_LICENSE("GPL");
-
-#ifdef CONFIG_COMPAT
-
-#define VIDEO1394_IOC32_LISTEN_QUEUE_BUFFER \
- _IOW ('#', 0x12, struct video1394_wait32)
-#define VIDEO1394_IOC32_LISTEN_WAIT_BUFFER \
- _IOWR('#', 0x13, struct video1394_wait32)
-#define VIDEO1394_IOC32_TALK_WAIT_BUFFER \
- _IOW ('#', 0x17, struct video1394_wait32)
-#define VIDEO1394_IOC32_LISTEN_POLL_BUFFER \
- _IOWR('#', 0x18, struct video1394_wait32)
-
-struct video1394_wait32 {
- u32 channel;
- u32 buffer;
- struct compat_timeval filltime;
-};
-
-static int video1394_wr_wait32(struct file *file, unsigned int cmd, unsigned long arg)
-{
- struct video1394_wait32 __user *argp = (void __user *)arg;
- struct video1394_wait32 wait32;
- struct video1394_wait wait;
- mm_segment_t old_fs;
- int ret;
-
- if (copy_from_user(&wait32, argp, sizeof(wait32)))
- return -EFAULT;
-
- wait.channel = wait32.channel;
- wait.buffer = wait32.buffer;
- wait.filltime.tv_sec = (time_t)wait32.filltime.tv_sec;
- wait.filltime.tv_usec = (suseconds_t)wait32.filltime.tv_usec;
-
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- if (cmd == VIDEO1394_IOC32_LISTEN_WAIT_BUFFER)
- ret = video1394_ioctl(file,
- VIDEO1394_IOC_LISTEN_WAIT_BUFFER,
- (unsigned long) &wait);
- else
- ret = video1394_ioctl(file,
- VIDEO1394_IOC_LISTEN_POLL_BUFFER,
- (unsigned long) &wait);
- set_fs(old_fs);
-
- if (!ret) {
- wait32.channel = wait.channel;
- wait32.buffer = wait.buffer;
- wait32.filltime.tv_sec = (int)wait.filltime.tv_sec;
- wait32.filltime.tv_usec = (int)wait.filltime.tv_usec;
-
- if (copy_to_user(argp, &wait32, sizeof(wait32)))
- ret = -EFAULT;
- }
-
- return ret;
-}
-
-static int video1394_w_wait32(struct file *file, unsigned int cmd, unsigned long arg)
-{
- struct video1394_wait32 wait32;
- struct video1394_wait wait;
- mm_segment_t old_fs;
- int ret;
-
- if (copy_from_user(&wait32, (void __user *)arg, sizeof(wait32)))
- return -EFAULT;
-
- wait.channel = wait32.channel;
- wait.buffer = wait32.buffer;
- wait.filltime.tv_sec = (time_t)wait32.filltime.tv_sec;
- wait.filltime.tv_usec = (suseconds_t)wait32.filltime.tv_usec;
-
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- if (cmd == VIDEO1394_IOC32_LISTEN_QUEUE_BUFFER)
- ret = video1394_ioctl(file,
- VIDEO1394_IOC_LISTEN_QUEUE_BUFFER,
- (unsigned long) &wait);
- else
- ret = video1394_ioctl(file,
- VIDEO1394_IOC_TALK_WAIT_BUFFER,
- (unsigned long) &wait);
- set_fs(old_fs);
-
- return ret;
-}
-
-static int video1394_queue_buf32(struct file *file, unsigned int cmd, unsigned long arg)
-{
- return -EFAULT; /* ??? was there before. */
-
- return video1394_ioctl(file,
- VIDEO1394_IOC_TALK_QUEUE_BUFFER, arg);
-}
-
-static long video1394_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
-{
- switch (cmd) {
- case VIDEO1394_IOC_LISTEN_CHANNEL:
- case VIDEO1394_IOC_UNLISTEN_CHANNEL:
- case VIDEO1394_IOC_TALK_CHANNEL:
- case VIDEO1394_IOC_UNTALK_CHANNEL:
- return video1394_ioctl(f, cmd, arg);
-
- case VIDEO1394_IOC32_LISTEN_QUEUE_BUFFER:
- return video1394_w_wait32(f, cmd, arg);
- case VIDEO1394_IOC32_LISTEN_WAIT_BUFFER:
- return video1394_wr_wait32(f, cmd, arg);
- case VIDEO1394_IOC_TALK_QUEUE_BUFFER:
- return video1394_queue_buf32(f, cmd, arg);
- case VIDEO1394_IOC32_TALK_WAIT_BUFFER:
- return video1394_w_wait32(f, cmd, arg);
- case VIDEO1394_IOC32_LISTEN_POLL_BUFFER:
- return video1394_wr_wait32(f, cmd, arg);
- default:
- return -ENOIOCTLCMD;
- }
-}
-
-#endif /* CONFIG_COMPAT */
-
-static void __exit video1394_exit_module (void)
-{
- hpsb_unregister_protocol(&video1394_driver);
- hpsb_unregister_highlevel(&video1394_highlevel);
- cdev_del(&video1394_cdev);
- PRINT_G(KERN_INFO, "Removed " VIDEO1394_DRIVER_NAME " module");
-}
-
-static int __init video1394_init_module (void)
-{
- int ret;
-
- hpsb_init_highlevel(&video1394_highlevel);
-
- cdev_init(&video1394_cdev, &video1394_fops);
- video1394_cdev.owner = THIS_MODULE;
- ret = cdev_add(&video1394_cdev, IEEE1394_VIDEO1394_DEV, 16);
- if (ret) {
- PRINT_G(KERN_ERR, "video1394: unable to get minor device block");
- return ret;
- }
-
- hpsb_register_highlevel(&video1394_highlevel);
-
- ret = hpsb_register_protocol(&video1394_driver);
- if (ret) {
- PRINT_G(KERN_ERR, "video1394: failed to register protocol");
- hpsb_unregister_highlevel(&video1394_highlevel);
- cdev_del(&video1394_cdev);
- return ret;
- }
-
- PRINT_G(KERN_INFO, "Installed " VIDEO1394_DRIVER_NAME " module");
- return 0;
-}
-
-
-module_init(video1394_init_module);
-module_exit(video1394_exit_module);
projects / mv-sheeva.git / blobdiff