*
* NOTES:
*
- * jds -- add private data to file to keep track of iso contexts associated
- * with each open -- so release won't kill all iso transfers.
- *
- * Damien Douxchamps: Fix failure when the number of DMA pages per frame is
- * one.
- *
* ioctl return codes:
* EFAULT is only for invalid address for the argp
* EINVAL for out of range values
* ENOTTY for unsupported ioctl request
*
*/
-
-/* Markus Tavenrath <speedygoo@speedygoo.de> :
- - fixed checks for valid buffer-numbers in video1394_icotl
- - changed the ways the dma prg's are used, now it's possible to use
- even a single dma buffer
-*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/vmalloc.h>
#include <linux/timex.h>
#include <linux/mm.h>
-#include <linux/ioctl32.h>
#include <linux/compat.h>
#include <linux/cdev.h>
#define ISO_CHANNELS 64
-#ifndef virt_to_page
-#define virt_to_page(x) MAP_NR(x)
-#endif
-
-#ifndef vmalloc_32
-#define vmalloc_32(x) vmalloc(x)
-#endif
-
struct it_dma_prg {
struct dma_cmd begin;
quadlet_t data[4];
struct dma_iso_ctx *d;
int i;
- d = kmalloc(sizeof(struct dma_iso_ctx), GFP_KERNEL);
- if (d == NULL) {
+ d = kzalloc(sizeof(*d), GFP_KERNEL);
+ if (!d) {
PRINT(KERN_ERR, ohci->host->id, "Failed to allocate dma_iso_ctx");
return NULL;
}
- memset(d, 0, sizeof *d);
-
d->ohci = ohci;
d->type = type;
d->channel = channel;
}
d->ctx = d->iso_tasklet.context;
- d->prg_reg = kmalloc(d->num_desc * sizeof(struct dma_prog_region),
- GFP_KERNEL);
- if (d->prg_reg == NULL) {
+ 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;
d->cmdPtr = OHCI1394_IsoRcvCommandPtr+32*d->ctx;
d->ctxMatch = OHCI1394_IsoRcvContextMatch+32*d->ctx;
- d->ir_prg = kmalloc(d->num_desc * sizeof(struct dma_cmd *),
+ d->ir_prg = kzalloc(d->num_desc * sizeof(*d->ir_prg),
GFP_KERNEL);
- if (d->ir_prg == NULL) {
+ if (!d->ir_prg) {
PRINT(KERN_ERR, ohci->host->id, "Failed to allocate dma ir prg");
free_dma_iso_ctx(d);
return NULL;
}
- memset(d->ir_prg, 0, d->num_desc * sizeof(struct dma_cmd *));
d->nb_cmd = d->buf_size / PAGE_SIZE + 1;
d->left_size = (d->frame_size % PAGE_SIZE) ?
d->ctrlClear = OHCI1394_IsoXmitContextControlClear+16*d->ctx;
d->cmdPtr = OHCI1394_IsoXmitCommandPtr+16*d->ctx;
- d->it_prg = kmalloc(d->num_desc * sizeof(struct it_dma_prg *),
+ d->it_prg = kzalloc(d->num_desc * sizeof(*d->it_prg),
GFP_KERNEL);
- if (d->it_prg == NULL) {
+ if (!d->it_prg) {
PRINT(KERN_ERR, ohci->host->id,
"Failed to allocate dma it prg");
free_dma_iso_ctx(d);
return NULL;
}
- memset(d->it_prg, 0, d->num_desc*sizeof(struct it_dma_prg *));
d->packet_size = packet_size;
}
}
- d->buffer_status = kmalloc(d->num_desc * sizeof(unsigned int),
- GFP_KERNEL);
- d->buffer_prg_assignment = kmalloc(d->num_desc * sizeof(unsigned int),
- GFP_KERNEL);
- d->buffer_time = kmalloc(d->num_desc * sizeof(struct timeval),
- GFP_KERNEL);
- d->last_used_cmd = kmalloc(d->num_desc * sizeof(unsigned int),
- GFP_KERNEL);
- d->next_buffer = kmalloc(d->num_desc * sizeof(int),
- GFP_KERNEL);
-
- if (d->buffer_status == NULL) {
- PRINT(KERN_ERR, ohci->host->id, "Failed to allocate buffer_status");
- free_dma_iso_ctx(d);
- return NULL;
- }
- if (d->buffer_prg_assignment == NULL) {
- PRINT(KERN_ERR, ohci->host->id, "Failed to allocate buffer_prg_assignment");
- free_dma_iso_ctx(d);
- return NULL;
- }
- if (d->buffer_time == NULL) {
- PRINT(KERN_ERR, ohci->host->id, "Failed to allocate buffer_time");
- free_dma_iso_ctx(d);
- return NULL;
- }
- if (d->last_used_cmd == NULL) {
- PRINT(KERN_ERR, ohci->host->id, "Failed to allocate last_used_cmd");
- free_dma_iso_ctx(d);
- return NULL;
- }
- if (d->next_buffer == NULL) {
- PRINT(KERN_ERR, ohci->host->id, "Failed to allocate next_buffer");
+ 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;
}
- memset(d->buffer_status, 0, d->num_desc * sizeof(unsigned int));
- memset(d->buffer_prg_assignment, 0, d->num_desc * sizeof(unsigned int));
- memset(d->buffer_time, 0, d->num_desc * sizeof(struct timeval));
- memset(d->last_used_cmd, 0, d->num_desc * sizeof(unsigned int));
- memset(d->next_buffer, -1, d->num_desc * sizeof(int));
spin_lock_init(&d->lock);
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[i]);
+ do_gettimeofday(&d->buffer_time[d->buffer_prg_assignment[i]]);
}
}
/* set time of buffer */
v.filltime = d->buffer_time[v.buffer];
-// printk("Buffer %d time %d\n", v.buffer, (d->buffer_time[v.buffer]).tv_usec);
/*
* Look ahead to see how many more buffers have been received
}
if (d->flags & VIDEO1394_VARIABLE_PACKET_SIZE) {
- int buf_size = d->nb_cmd * sizeof(unsigned int);
+ int buf_size = d->nb_cmd * sizeof(*psizes);
struct video1394_queue_variable __user *p = argp;
unsigned int __user *qv;
spin_lock_irqsave(&d->lock,flags);
- // last_buffer is last_prg
+ /* 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,
if (ohci == NULL)
return -EIO;
- ctx = kmalloc(sizeof(struct file_ctx), GFP_KERNEL);
- if (ctx == NULL) {
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx) {
PRINT(KERN_ERR, ohci->host->id, "Cannot malloc file_ctx");
return -ENOMEM;
}
- memset(ctx, 0, sizeof(struct file_ctx));
ctx->ohci = ohci;
INIT_LIST_HEAD(&ctx->context_list);
ctx->current_ctx = NULL;
projects / linux-2.6-omap-h63xx.git / blobdiff