target/linux/brcm2708/patches-4.19/950-0690-staging-vcsm-cma-Remove-cache-manipulation-ioctl-fro.patch

   1 From fbcf72909974b3dda42a292013c349647bcfa945 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
   3 Date: Tue, 25 Jun 2019 00:29:44 +0100
   4 Subject: [PATCH 690/703] staging: vcsm-cma: Remove cache manipulation ioctl
   5  from ARM64
   6
   7 The cache flushing ioctls are used by the Pi3 HEVC hw-assisted
   8 decoder as it needs finer grained flushing control than dma_ops
   9 allow.
  10 These cache calls are not present for ARM64, therefore disable
  11 them. We are not actively supporting 64bit kernels at present,
  12 and the use case of the HEVC decoder is fairly limited.
  13
  14 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
  15 ---
  16  drivers/staging/vc04_services/vc-sm-cma/vc_sm.c | 8 ++++++++
  17  1 file changed, 8 insertions(+)
  18
  19 --- a/drivers/staging/vc04_services/vc-sm-cma/vc_sm.c
  20 +++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm.c
  21 @@ -1259,6 +1259,7 @@ error:
  22         return ret;
  23  }
  24
  25 +#ifndef CONFIG_ARM64
  26  /* Converts VCSM_CACHE_OP_* to an operating function. */
  27  static void (*cache_op_to_func(const unsigned int cache_op))
  28                                                 (const void*, const void*)
  29 @@ -1351,6 +1352,7 @@ out:
  30
  31         return ret;
  32  }
  33 +#endif
  34
  35  static long vc_sm_cma_ioctl(struct file *file, unsigned int cmd,
  36                             unsigned long arg)
  37 @@ -1448,6 +1450,7 @@ static long vc_sm_cma_ioctl(struct file
  38                 break;
  39         }
  40
  41 +#ifndef CONFIG_ARM64
  42         /*
  43          * Flush/Invalidate the cache for a given mapping.
  44          * Blocks must be pinned (i.e. accessed) before this call.
  45 @@ -1455,6 +1458,7 @@ static long vc_sm_cma_ioctl(struct file
  46         case VC_SM_CMA_CMD_CLEAN_INVALID2:
  47                 ret = vc_sm_cma_clean_invalid2(cmdnr, arg);
  48                 break;
  49 +#endif
  50
  51         default:
  52                 pr_debug("[%s]: cmd %x tgid %u, owner %u\n", __func__, cmdnr,
  53 @@ -1467,6 +1471,7 @@ static long vc_sm_cma_ioctl(struct file
  54         return ret;
  55  }
  56
  57 +#ifndef CONFIG_ARM64
  58  #ifdef CONFIG_COMPAT
  59  struct vc_sm_cma_ioctl_clean_invalid2_32 {
  60         u32 op_count;
  61 @@ -1496,14 +1501,17 @@ static long vc_sm_cma_compat_ioctl(struc
  62         }
  63  }
  64  #endif
  65 +#endif
  66
  67  /* Device operations that we managed in this driver. */
  68  static const struct file_operations vc_sm_ops = {
  69         .owner = THIS_MODULE,
  70         .unlocked_ioctl = vc_sm_cma_ioctl,
  71 +#ifndef CONFIG_ARM64
  72  #ifdef CONFIG_COMPAT
  73         .compat_ioctl = vc_sm_cma_compat_ioctl,
  74  #endif
  75 +#endif
  76         .open = vc_sm_cma_open,
  77         .release = vc_sm_cma_release,
  78  };