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-rw-r--r--drivers/media/video/cx18/cx18-driver.c4
-rw-r--r--drivers/media/video/cx18/cx18-driver.h7
-rw-r--r--drivers/media/video/cx18/cx18-irq.c21
-rw-r--r--drivers/media/video/cx18/cx18-mailbox.c84
-rw-r--r--drivers/media/video/cx18/cx18-mailbox.h7
5 files changed, 60 insertions, 63 deletions
diff --git a/drivers/media/video/cx18/cx18-driver.c b/drivers/media/video/cx18/cx18-driver.c
index 6799eab8b6a..3079e466e6e 100644
--- a/drivers/media/video/cx18/cx18-driver.c
+++ b/drivers/media/video/cx18/cx18-driver.c
@@ -446,6 +446,8 @@ static int __devinit cx18_init_struct1(struct cx18 *cx)
mutex_init(&cx->i2c_bus_lock[0]);
mutex_init(&cx->i2c_bus_lock[1]);
mutex_init(&cx->gpio_lock);
+ mutex_init(&cx->epu2apu_mb_lock);
+ mutex_init(&cx->epu2cpu_mb_lock);
spin_lock_init(&cx->lock);
@@ -466,8 +468,6 @@ static int __devinit cx18_init_struct1(struct cx18 *cx)
init_waitqueue_head(&cx->cap_w);
init_waitqueue_head(&cx->mb_apu_waitq);
init_waitqueue_head(&cx->mb_cpu_waitq);
- init_waitqueue_head(&cx->mb_epu_waitq);
- init_waitqueue_head(&cx->mb_hpu_waitq);
init_waitqueue_head(&cx->dma_waitq);
/* VBI */
diff --git a/drivers/media/video/cx18/cx18-driver.h b/drivers/media/video/cx18/cx18-driver.h
index 04f1c624da7..e2ec1554978 100644
--- a/drivers/media/video/cx18/cx18-driver.h
+++ b/drivers/media/video/cx18/cx18-driver.h
@@ -378,7 +378,10 @@ struct cx18 {
u32 v4l2_cap; /* V4L2 capabilities of card */
u32 hw_flags; /* Hardware description of the board */
unsigned mdl_offset;
- struct cx18_scb __iomem *scb; /* pointer to SCB */
+ struct cx18_scb __iomem *scb; /* pointer to SCB */
+ struct mutex epu2apu_mb_lock; /* protect driver to chip mailbox in SCB*/
+ struct mutex epu2cpu_mb_lock; /* protect driver to chip mailbox in SCB*/
+
struct cx18_av_state av_state;
@@ -428,8 +431,6 @@ struct cx18 {
wait_queue_head_t mb_apu_waitq;
wait_queue_head_t mb_cpu_waitq;
- wait_queue_head_t mb_epu_waitq;
- wait_queue_head_t mb_hpu_waitq;
wait_queue_head_t cap_w;
/* when the current DMA is finished this queue is woken up */
wait_queue_head_t dma_waitq;
diff --git a/drivers/media/video/cx18/cx18-irq.c b/drivers/media/video/cx18/cx18-irq.c
index 33f56c61ca7..37b931055d3 100644
--- a/drivers/media/video/cx18/cx18-irq.c
+++ b/drivers/media/video/cx18/cx18-irq.c
@@ -38,7 +38,7 @@ void cx18_work_handler(struct work_struct *work)
cx18_dvb_work_handler(cx);
}
-static void epu_dma_done(struct cx18 *cx, struct cx18_mailbox *mb)
+static void epu_dma_done(struct cx18 *cx, struct cx18_mailbox *mb, int rpu)
{
u32 handle = mb->args[0];
struct cx18_stream *s = NULL;
@@ -59,7 +59,7 @@ static void epu_dma_done(struct cx18 *cx, struct cx18_mailbox *mb)
" handle %d\n", handle);
mb->error = CXERR_NOT_OPEN;
mb->cmd = 0;
- cx18_mb_ack(cx, mb);
+ cx18_mb_ack(cx, mb, rpu);
return;
}
@@ -86,13 +86,13 @@ static void epu_dma_done(struct cx18 *cx, struct cx18_mailbox *mb)
}
mb->error = 0;
mb->cmd = 0;
- cx18_mb_ack(cx, mb);
+ cx18_mb_ack(cx, mb, rpu);
wake_up(&cx->dma_waitq);
if (s->id != -1)
wake_up(&s->waitq);
}
-static void epu_debug(struct cx18 *cx, struct cx18_mailbox *mb)
+static void epu_debug(struct cx18 *cx, struct cx18_mailbox *mb, int rpu)
{
char str[256] = { 0 };
char *p;
@@ -102,7 +102,7 @@ static void epu_debug(struct cx18 *cx, struct cx18_mailbox *mb)
cx18_memcpy_fromio(cx, str, cx->enc_mem + mb->args[1], 252);
str[252] = 0;
}
- cx18_mb_ack(cx, mb);
+ cx18_mb_ack(cx, mb, rpu);
CX18_DEBUG_INFO("%x %s\n", mb->args[0], str);
p = strchr(str, '.');
if (!test_bit(CX18_F_I_LOADED_FW, &cx->i_flags) && p && p > str)
@@ -119,10 +119,10 @@ static void epu_cmd(struct cx18 *cx, u32 sw1)
switch (mb.cmd) {
case CX18_EPU_DMA_DONE:
- epu_dma_done(cx, &mb);
+ epu_dma_done(cx, &mb, CPU);
break;
case CX18_EPU_DEBUG:
- epu_debug(cx, &mb);
+ epu_debug(cx, &mb, CPU);
break;
default:
CX18_WARN("Unknown CPU_TO_EPU mailbox command %#08x\n",
@@ -135,11 +135,6 @@ static void epu_cmd(struct cx18 *cx, u32 sw1)
cx18_memcpy_fromio(cx, &mb, &cx->scb->apu2epu_mb, sizeof(mb));
CX18_WARN("Unknown APU_TO_EPU mailbox command %#08x\n", mb.cmd);
}
-
- if (sw1 & IRQ_HPU_TO_EPU) {
- cx18_memcpy_fromio(cx, &mb, &cx->scb->hpu2epu_mb, sizeof(mb));
- CX18_WARN("Unknown HPU_TO_EPU mailbox command %#08x\n", mb.cmd);
- }
}
static void xpu_ack(struct cx18 *cx, u32 sw2)
@@ -148,8 +143,6 @@ static void xpu_ack(struct cx18 *cx, u32 sw2)
wake_up(&cx->mb_cpu_waitq);
if (sw2 & IRQ_APU_TO_EPU_ACK)
wake_up(&cx->mb_apu_waitq);
- if (sw2 & IRQ_HPU_TO_EPU_ACK)
- wake_up(&cx->mb_hpu_waitq);
}
irqreturn_t cx18_irq_handler(int irq, void *dev_id)
diff --git a/drivers/media/video/cx18/cx18-mailbox.c b/drivers/media/video/cx18/cx18-mailbox.c
index acff7dfb60d..d2975a2e6cb 100644
--- a/drivers/media/video/cx18/cx18-mailbox.c
+++ b/drivers/media/video/cx18/cx18-mailbox.c
@@ -30,11 +30,6 @@
#define API_FAST (1 << 2) /* Short timeout */
#define API_SLOW (1 << 3) /* Additional 300ms timeout */
-#define APU 0
-#define CPU 1
-#define EPU 2
-#define HPU 3
-
struct cx18_api_info {
u32 cmd;
u8 flags; /* Flags, see above */
@@ -117,10 +112,7 @@ static struct cx18_mailbox __iomem *cx18_mb_is_complete(struct cx18 *cx, int rpu
*irq = cx18_readl(cx, &cx->scb->epu2cpu_irq);
break;
- case HPU:
- mb = &cx->scb->epu2hpu_mb;
- *state = cx18_readl(cx, &cx->scb->hpu_state);
- *irq = cx18_readl(cx, &cx->scb->epu2hpu_irq);
+ default:
break;
}
@@ -142,25 +134,12 @@ static struct cx18_mailbox __iomem *cx18_mb_is_complete(struct cx18 *cx, int rpu
return NULL;
}
-long cx18_mb_ack(struct cx18 *cx, const struct cx18_mailbox *mb)
+long cx18_mb_ack(struct cx18 *cx, const struct cx18_mailbox *mb, int rpu)
{
- const struct cx18_api_info *info = find_api_info(mb->cmd);
struct cx18_mailbox __iomem *ack_mb;
u32 ack_irq;
- u8 rpu = CPU;
-
- if (info == NULL && mb->cmd) {
- CX18_WARN("Cannot ack unknown command %x\n", mb->cmd);
- return -EINVAL;
- }
- if (info)
- rpu = info->rpu;
switch (rpu) {
- case HPU:
- ack_irq = IRQ_EPU_TO_HPU_ACK;
- ack_mb = &cx->scb->hpu2epu_mb;
- break;
case APU:
ack_irq = IRQ_EPU_TO_APU_ACK;
ack_mb = &cx->scb->apu2epu_mb;
@@ -170,7 +149,8 @@ long cx18_mb_ack(struct cx18 *cx, const struct cx18_mailbox *mb)
ack_mb = &cx->scb->cpu2epu_mb;
break;
default:
- CX18_WARN("Unknown RPU for command %x\n", mb->cmd);
+ CX18_WARN("Unhandled RPU (%d) for command %x ack\n",
+ rpu, mb->cmd);
return -EINVAL;
}
@@ -187,8 +167,8 @@ static int cx18_api_call(struct cx18 *cx, u32 cmd, int args, u32 data[])
u32 state = 0, irq = 0, req, oldreq, err;
struct cx18_mailbox __iomem *mb;
wait_queue_head_t *waitq;
+ struct mutex *mb_lock;
int timeout = 100;
- int cnt = 0;
int sig = 0;
int i;
@@ -201,10 +181,27 @@ static int cx18_api_call(struct cx18 *cx, u32 cmd, int args, u32 data[])
CX18_DEBUG_HI_API("%s\n", info->name);
else
CX18_DEBUG_API("%s\n", info->name);
+
+ switch (info->rpu) {
+ case APU:
+ waitq = &cx->mb_apu_waitq;
+ mb_lock = &cx->epu2apu_mb_lock;
+ break;
+ case CPU:
+ waitq = &cx->mb_cpu_waitq;
+ mb_lock = &cx->epu2cpu_mb_lock;
+ break;
+ default:
+ CX18_WARN("Unknown RPU (%d) for API call\n", info->rpu);
+ return -EINVAL;
+ }
+
+ mutex_lock(mb_lock);
cx18_setup_page(cx, SCB_OFFSET);
mb = cx18_mb_is_complete(cx, info->rpu, &state, &irq, &req);
if (mb == NULL) {
+ mutex_unlock(mb_lock);
CX18_ERR("mb %s busy\n", info->name);
return -EBUSY;
}
@@ -216,34 +213,35 @@ static int cx18_api_call(struct cx18 *cx, u32 cmd, int args, u32 data[])
cx18_writel(cx, 0, &mb->error);
cx18_writel(cx, req, &mb->request);
- switch (info->rpu) {
- case APU: waitq = &cx->mb_apu_waitq; break;
- case CPU: waitq = &cx->mb_cpu_waitq; break;
- case EPU: waitq = &cx->mb_epu_waitq; break;
- case HPU: waitq = &cx->mb_hpu_waitq; break;
- default: return -EINVAL;
- }
if (info->flags & API_FAST)
timeout /= 2;
cx18_write_reg_expect(cx, irq, SW1_INT_SET, irq, irq);
- while (!sig && cx18_readl(cx, &mb->ack) != cx18_readl(cx, &mb->request)
- && cnt < 660) {
- if (cnt > 200 && !in_atomic())
- sig = cx18_msleep_timeout(10, 1);
- cnt++;
- }
- if (sig)
- return -EINTR;
- if (cnt == 660) {
+ sig = wait_event_interruptible_timeout(
+ *waitq,
+ cx18_readl(cx, &mb->ack) == cx18_readl(cx, &mb->request),
+ msecs_to_jiffies(timeout));
+ if (sig == 0) {
+ /* Timed out */
cx18_writel(cx, oldreq, &mb->request);
- CX18_ERR("mb %s failed\n", info->name);
+ mutex_unlock(mb_lock);
+ CX18_ERR("sending %s timed out waiting for RPU to respond\n",
+ info->name);
return -EINVAL;
+ } else if (sig < 0) {
+ /* Interrupted */
+ cx18_writel(cx, oldreq, &mb->request);
+ mutex_unlock(mb_lock);
+ CX18_WARN("sending %s interrupted waiting for RPU to respond\n",
+ info->name);
+ return -EINTR;
}
+
for (i = 0; i < MAX_MB_ARGUMENTS; i++)
data[i] = cx18_readl(cx, &mb->args[i]);
err = cx18_readl(cx, &mb->error);
- if (!in_atomic() && (info->flags & API_SLOW))
+ mutex_unlock(mb_lock);
+ if (info->flags & API_SLOW)
cx18_msleep_timeout(300, 0);
if (err)
CX18_DEBUG_API("mailbox error %08x for command %s\n", err,
diff --git a/drivers/media/video/cx18/cx18-mailbox.h b/drivers/media/video/cx18/cx18-mailbox.h
index d995641536b..54758f32db1 100644
--- a/drivers/media/video/cx18/cx18-mailbox.h
+++ b/drivers/media/video/cx18/cx18-mailbox.h
@@ -30,6 +30,11 @@
#define MB_RESERVED_HANDLE_0 0
#define MB_RESERVED_HANDLE_1 0xFFFFFFFF
+#define APU 0
+#define CPU 1
+#define EPU 2
+#define HPU 3
+
struct cx18;
/* The cx18_mailbox struct is the mailbox structure which is used for passing
@@ -68,6 +73,6 @@ int cx18_vapi_result(struct cx18 *cx, u32 data[MAX_MB_ARGUMENTS], u32 cmd,
int cx18_vapi(struct cx18 *cx, u32 cmd, int args, ...);
int cx18_api_func(void *priv, u32 cmd, int in, int out,
u32 data[CX2341X_MBOX_MAX_DATA]);
-long cx18_mb_ack(struct cx18 *cx, const struct cx18_mailbox *mb);
+long cx18_mb_ack(struct cx18 *cx, const struct cx18_mailbox *mb, int rpu);
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 02:25:32 +0000