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powerpc/ps3: Replace the flip_ctl logic in ps3av and ps3fb by a mutex 

Introduce ps3_gpu_mutex to synchronizes GPU-related operations, like:
  - invoking the L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT command using the
    lv1_gpu_context_attribute() hypervisor call,
  - handling the PS3AV_CID_AVB_PARAM packet in the PS3 A/V Settings driver.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
hifive-unleashed-5.1
Geert Uytterhoeven 2008-10-30 08:12:58 +00:00 committed by Paul Mackerras
parent 486936cd93
commit 9b82f3e617
6 changed files with 14 additions and 38 deletions
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3
arch/powerpc/include/asm/ps3.h
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@ -516,4 +516,7 @@ void ps3_sync_irq(int node);
u32 ps3_get_hw_thread_id(int cpu);
u64 ps3_get_spe_id(void *arg);
/* mutex synchronizing GPU accesses and video mode changes */
extern struct mutex ps3_gpu_mutex;
#endif

4
arch/powerpc/include/asm/ps3av.h
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@ -740,8 +740,4 @@ extern int ps3av_audio_mute(int);
extern int ps3av_audio_mute_analog(int);
extern int ps3av_dev_open(void);
extern int ps3av_dev_close(void);
extern void ps3av_register_flip_ctl(void (*flip_ctl)(int on, void *data),
void *flip_data);
extern void ps3av_flip_ctl(int on);
#endif /* _ASM_POWERPC_PS3AV_H_ */

4
arch/powerpc/platforms/ps3/setup.c
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@ -42,6 +42,10 @@
#define DBG pr_debug
#endif
/* mutex synchronizing GPU accesses and video mode changes */
DEFINE_MUTEX(ps3_gpu_mutex);
EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
#if !defined(CONFIG_SMP)
static void smp_send_stop(void) {}
#endif

20
drivers/ps3/ps3av.c
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@ -59,8 +59,6 @@ static struct ps3av {
struct ps3av_reply_hdr reply_hdr;
u8 raw[PS3AV_BUF_SIZE];
} recv_buf;
void (*flip_ctl)(int on, void *data);
void *flip_data;
} *ps3av;
/* color space */
@ -939,24 +937,6 @@ int ps3av_audio_mute(int mute)
EXPORT_SYMBOL_GPL(ps3av_audio_mute);
void ps3av_register_flip_ctl(void (*flip_ctl)(int on, void *data),
void *flip_data)
{
mutex_lock(&ps3av->mutex);
ps3av->flip_ctl = flip_ctl;
ps3av->flip_data = flip_data;
mutex_unlock(&ps3av->mutex);
}
EXPORT_SYMBOL_GPL(ps3av_register_flip_ctl);
void ps3av_flip_ctl(int on)
{
mutex_lock(&ps3av->mutex);
if (ps3av->flip_ctl)
ps3av->flip_ctl(on, ps3av->flip_data);
mutex_unlock(&ps3av->mutex);
}
static int ps3av_probe(struct ps3_system_bus_device *dev)
{
int res;

4
drivers/ps3/ps3av_cmd.c
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@ -864,7 +864,7 @@ int ps3av_cmd_avb_param(struct ps3av_pkt_avb_param *avb, u32 send_len)
{
int res;
ps3av_flip_ctl(0); /* flip off */
mutex_lock(&ps3_gpu_mutex);
/* avb packet */
res = ps3av_do_pkt(PS3AV_CID_AVB_PARAM, send_len, sizeof(*avb),
@ -878,7 +878,7 @@ int ps3av_cmd_avb_param(struct ps3av_pkt_avb_param *avb, u32 send_len)
res);
out:
ps3av_flip_ctl(1); /* flip on */
mutex_unlock(&ps3_gpu_mutex);
return res;
}

17
drivers/video/ps3fb.c
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@ -460,12 +460,16 @@ static void ps3fb_sync_image(struct device *dev, u64 frame_offset,
line_length |= (u64)src_line_length << 32;
src_offset += GPU_FB_START;
mutex_lock(&ps3_gpu_mutex);
status = lv1_gpu_context_attribute(ps3fb.context_handle,
L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT,
dst_offset, GPU_IOIF + src_offset,
L1GPU_FB_BLIT_WAIT_FOR_COMPLETION |
(width << 16) | height,
line_length);
mutex_unlock(&ps3_gpu_mutex);
if (status)
dev_err(dev,
"%s: lv1_gpu_context_attribute FB_BLIT failed: %d\n",
@ -784,15 +788,6 @@ static int ps3fb_wait_for_vsync(u32 crtc)
return 0;
}
static void ps3fb_flip_ctl(int on, void *data)
{
struct ps3fb_priv *priv = data;
if (on)
atomic_dec_if_positive(&priv->ext_flip);
else
atomic_inc(&priv->ext_flip);
}
/*
* ioctl
@ -1228,7 +1223,6 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
}
ps3fb.task = task;
ps3av_register_flip_ctl(ps3fb_flip_ctl, &ps3fb);
return 0;
@ -1258,10 +1252,9 @@ static int ps3fb_shutdown(struct ps3_system_bus_device *dev)
dev_dbg(&dev->core, " -> %s:%d\n", __func__, __LINE__);
ps3fb_flip_ctl(0, &ps3fb); /* flip off */
atomic_inc(&ps3fb.ext_flip); /* flip off */
ps3fb.dinfo->irq.mask = 0;
ps3av_register_flip_ctl(NULL, NULL);
if (ps3fb.task) {
struct task_struct *task = ps3fb.task;
ps3fb.task = NULL;