drm/i915: cleanup use of INSTR_CLIENT_MASK

Doing cmd_header >> 29 to extract our 3-bit client value where we know
cmd_header is a u32 shouldn't then also require the use of a mask. So
remove the redundant operation and get rid of INSTR_CLIENT_MASK now that
there are no longer any users.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1479163174-29686-1-git-send-email-matthew.auld@intel.com

diff --git a/drivers/gpu/drm/i915/i915_cmd_parser.c b/drivers/gpu/drm/i915/i915_cmd_parser.c
index f5762cd..be74c0f 100644 (file)
--- a/drivers/gpu/drm/i915/i915_cmd_parser.c
+++ b/drivers/gpu/drm/i915/i915_cmd_parser.c
@@ -558,7 +558,7 @@ static const struct drm_i915_reg_table hsw_blt_reg_tables[] = {
 
 static u32 gen7_render_get_cmd_length_mask(u32 cmd_header)
 {
-       u32 client = (cmd_header & INSTR_CLIENT_MASK) >> INSTR_CLIENT_SHIFT;
+       u32 client = cmd_header >> INSTR_CLIENT_SHIFT;
        u32 subclient =
                (cmd_header & INSTR_SUBCLIENT_MASK) >> INSTR_SUBCLIENT_SHIFT;
 
@@ -577,7 +577,7 @@ static u32 gen7_render_get_cmd_length_mask(u32 cmd_header)
 
 static u32 gen7_bsd_get_cmd_length_mask(u32 cmd_header)
 {
-       u32 client = (cmd_header & INSTR_CLIENT_MASK) >> INSTR_CLIENT_SHIFT;
+       u32 client = cmd_header >> INSTR_CLIENT_SHIFT;
        u32 subclient =
                (cmd_header & INSTR_SUBCLIENT_MASK) >> INSTR_SUBCLIENT_SHIFT;
        u32 op = (cmd_header & INSTR_26_TO_24_MASK) >> INSTR_26_TO_24_SHIFT;
@@ -600,7 +600,7 @@ static u32 gen7_bsd_get_cmd_length_mask(u32 cmd_header)
 
 static u32 gen7_blt_get_cmd_length_mask(u32 cmd_header)
 {
-       u32 client = (cmd_header & INSTR_CLIENT_MASK) >> INSTR_CLIENT_SHIFT;
+       u32 client = cmd_header >> INSTR_CLIENT_SHIFT;
 
        if (client == INSTR_MI_CLIENT)
                return 0x3F;

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 3298487..6747d68 100644 (file)
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -294,7 +294,6 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
  * Instruction field definitions used by the command parser
  */
 #define INSTR_CLIENT_SHIFT      29
-#define INSTR_CLIENT_MASK       0xE0000000
 #define   INSTR_MI_CLIENT       0x0
 #define   INSTR_BC_CLIENT       0x2
 #define   INSTR_RC_CLIENT       0x3