target/linux/ps3/patches-2.6.28/0002-powerpc-ps3-Replace-the-flip_ctl-logic-in-ps3av-and.patch

   1 From 9b82f3e61758ed897200f0244b63a77c1791bcba Mon Sep 17 00:00:00 2001
   2 From: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
   3 Date: Thu, 30 Oct 2008 08:12:58 +0000
   4 Subject: [PATCH] powerpc/ps3: Replace the flip_ctl logic in ps3av and ps3fb by a mutex
   5
   6 Introduce ps3_gpu_mutex to synchronizes GPU-related operations, like:
   7   - invoking the L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT command using the
   8     lv1_gpu_context_attribute() hypervisor call,
   9   - handling the PS3AV_CID_AVB_PARAM packet in the PS3 A/V Settings driver.
  10
  11 Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
  12 Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
  13 Signed-off-by: Paul Mackerras <paulus@samba.org>
  14 ---
  15  arch/powerpc/include/asm/ps3.h     |    3 +++
  16  arch/powerpc/include/asm/ps3av.h   |    4 ----
  17  arch/powerpc/platforms/ps3/setup.c |    4 ++++
  18  drivers/ps3/ps3av.c                |   20 --------------------
  19  drivers/ps3/ps3av_cmd.c            |    4 ++--
  20  drivers/video/ps3fb.c              |   17 +++++------------
  21  6 files changed, 14 insertions(+), 38 deletions(-)
  22
  23 diff --git a/arch/powerpc/include/asm/ps3.h b/arch/powerpc/include/asm/ps3.h
  24 index f9e34c4..4299365 100644
  25 --- a/arch/powerpc/include/asm/ps3.h
  26 +++ b/arch/powerpc/include/asm/ps3.h
  27 @@ -516,4 +516,7 @@ void ps3_sync_irq(int node);
  28  u32 ps3_get_hw_thread_id(int cpu);
  29  u64 ps3_get_spe_id(void *arg);
  30
  31 +/* mutex synchronizing GPU accesses and video mode changes */
  32 +extern struct mutex ps3_gpu_mutex;
  33 +
  34  #endif
  35 diff --git a/arch/powerpc/include/asm/ps3av.h b/arch/powerpc/include/asm/ps3av.h
  36 index 5aa22cf..cd24ac1 100644
  37 --- a/arch/powerpc/include/asm/ps3av.h
  38 +++ b/arch/powerpc/include/asm/ps3av.h
  39 @@ -740,8 +740,4 @@ extern int ps3av_audio_mute(int);
  40  extern int ps3av_audio_mute_analog(int);
  41  extern int ps3av_dev_open(void);
  42  extern int ps3av_dev_close(void);
  43 -extern void ps3av_register_flip_ctl(void (*flip_ctl)(int on, void *data),
  44 -                                   void *flip_data);
  45 -extern void ps3av_flip_ctl(int on);
  46 -
  47  #endif /* _ASM_POWERPC_PS3AV_H_ */
  48 diff --git a/arch/powerpc/platforms/ps3/setup.c b/arch/powerpc/platforms/ps3/setup.c
  49 index 77bc330..bfc33fb 100644
  50 --- a/arch/powerpc/platforms/ps3/setup.c
  51 +++ b/arch/powerpc/platforms/ps3/setup.c
  52 @@ -42,6 +42,10 @@
  53  #define DBG pr_debug
  54  #endif
  55
  56 +/* mutex synchronizing GPU accesses and video mode changes */
  57 +DEFINE_MUTEX(ps3_gpu_mutex);
  58 +EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
  59 +
  60  #if !defined(CONFIG_SMP)
  61  static void smp_send_stop(void) {}
  62  #endif
  63 diff --git a/drivers/ps3/ps3av.c b/drivers/ps3/ps3av.c
  64 index 06848b2..5324978 100644
  65 --- a/drivers/ps3/ps3av.c
  66 +++ b/drivers/ps3/ps3av.c
  67 @@ -59,8 +59,6 @@ static struct ps3av {
  68                 struct ps3av_reply_hdr reply_hdr;
  69                 u8 raw[PS3AV_BUF_SIZE];
  70         } recv_buf;
  71 -       void (*flip_ctl)(int on, void *data);
  72 -       void *flip_data;
  73  } *ps3av;
  74
  75  /* color space */
  76 @@ -939,24 +937,6 @@ int ps3av_audio_mute(int mute)
  77
  78  EXPORT_SYMBOL_GPL(ps3av_audio_mute);
  79
  80 -void ps3av_register_flip_ctl(void (*flip_ctl)(int on, void *data),
  81 -                            void *flip_data)
  82 -{
  83 -       mutex_lock(&ps3av->mutex);
  84 -       ps3av->flip_ctl = flip_ctl;
  85 -       ps3av->flip_data = flip_data;
  86 -       mutex_unlock(&ps3av->mutex);
  87 -}
  88 -EXPORT_SYMBOL_GPL(ps3av_register_flip_ctl);
  89 -
  90 -void ps3av_flip_ctl(int on)
  91 -{
  92 -       mutex_lock(&ps3av->mutex);
  93 -       if (ps3av->flip_ctl)
  94 -               ps3av->flip_ctl(on, ps3av->flip_data);
  95 -       mutex_unlock(&ps3av->mutex);
  96 -}
  97 -
  98  static int ps3av_probe(struct ps3_system_bus_device *dev)
  99  {
 100         int res;
 101 diff --git a/drivers/ps3/ps3av_cmd.c b/drivers/ps3/ps3av_cmd.c
 102 index 11eb503..716596e 100644
 103 --- a/drivers/ps3/ps3av_cmd.c
 104 +++ b/drivers/ps3/ps3av_cmd.c
 105 @@ -864,7 +864,7 @@ int ps3av_cmd_avb_param(struct ps3av_pkt_avb_param *avb, u32 send_len)
 106  {
 107         int res;
 108
 109 -       ps3av_flip_ctl(0);      /* flip off */
 110 +       mutex_lock(&ps3_gpu_mutex);
 111
 112         /* avb packet */
 113         res = ps3av_do_pkt(PS3AV_CID_AVB_PARAM, send_len, sizeof(*avb),
 114 @@ -878,7 +878,7 @@ int ps3av_cmd_avb_param(struct ps3av_pkt_avb_param *avb, u32 send_len)
 115                          res);
 116
 117        out:
 118 -       ps3av_flip_ctl(1);      /* flip on */
 119 +       mutex_unlock(&ps3_gpu_mutex);
 120         return res;
 121  }
 122
 123 diff --git a/drivers/video/ps3fb.c b/drivers/video/ps3fb.c
 124 index 4b5d807..bd3e39b 100644
 125 --- a/drivers/video/ps3fb.c
 126 +++ b/drivers/video/ps3fb.c
 127 @@ -460,12 +460,16 @@ static void ps3fb_sync_image(struct device *dev, u64 frame_offset,
 128                 line_length |= (u64)src_line_length << 32;
 129
 130         src_offset += GPU_FB_START;
 131 +
 132 +       mutex_lock(&ps3_gpu_mutex);
 133         status = lv1_gpu_context_attribute(ps3fb.context_handle,
 134                                            L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT,
 135                                            dst_offset, GPU_IOIF + src_offset,
 136                                            L1GPU_FB_BLIT_WAIT_FOR_COMPLETION |
 137                                            (width << 16) | height,
 138                                            line_length);
 139 +       mutex_unlock(&ps3_gpu_mutex);
 140 +
 141         if (status)
 142                 dev_err(dev,
 143                         "%s: lv1_gpu_context_attribute FB_BLIT failed: %d\n",
 144 @@ -784,15 +788,6 @@ static int ps3fb_wait_for_vsync(u32 crtc)
 145         return 0;
 146  }
 147
 148 -static void ps3fb_flip_ctl(int on, void *data)
 149 -{
 150 -       struct ps3fb_priv *priv = data;
 151 -       if (on)
 152 -               atomic_dec_if_positive(&priv->ext_flip);
 153 -       else
 154 -               atomic_inc(&priv->ext_flip);
 155 -}
 156 -
 157
 158      /*
 159       * ioctl
 160 @@ -1228,7 +1223,6 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
 161         }
 162
 163         ps3fb.task = task;
 164 -       ps3av_register_flip_ctl(ps3fb_flip_ctl, &ps3fb);
 165
 166         return 0;
 167
 168 @@ -1258,10 +1252,9 @@ static int ps3fb_shutdown(struct ps3_system_bus_device *dev)
 169
 170         dev_dbg(&dev->core, " -> %s:%d\n", __func__, __LINE__);
 171
 172 -       ps3fb_flip_ctl(0, &ps3fb);      /* flip off */
 173 +       atomic_inc(&ps3fb.ext_flip);    /* flip off */
 174         ps3fb.dinfo->irq.mask = 0;
 175
 176 -       ps3av_register_flip_ctl(NULL, NULL);
 177         if (ps3fb.task) {
 178                 struct task_struct *task = ps3fb.task;
 179                 ps3fb.task = NULL;
 180 --
 181 1.6.0.4
 182