Mesa (master): i965/hsw+: Add support for copying a register
Jordan Justen
jljusten at kemper.freedesktop.org
Wed May 4 19:39:10 UTC 2016
Module: Mesa
Branch: master
Commit: 959e1e9e6668f9b0e7c480febcaab1e2995fb54b
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=959e1e9e6668f9b0e7c480febcaab1e2995fb54b
Author: Jordan Justen <jordan.l.justen at intel.com>
Date: Tue Apr 19 09:34:40 2016 -0700
i965/hsw+: Add support for copying a register
Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
---
src/mesa/drivers/dri/i965/brw_context.h | 2 ++
src/mesa/drivers/dri/i965/intel_batchbuffer.c | 15 +++++++++++++++
src/mesa/drivers/dri/i965/intel_reg.h | 1 +
3 files changed, 18 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h
index e628564..ba42aa9 100644
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -1452,6 +1452,8 @@ void brw_store_register_mem32(struct brw_context *brw,
drm_intel_bo *bo, uint32_t reg, uint32_t offset);
void brw_store_register_mem64(struct brw_context *brw,
drm_intel_bo *bo, uint32_t reg, uint32_t offset);
+void brw_load_register_reg(struct brw_context *brw, uint32_t src,
+ uint32_t dest);
void brw_store_data_imm32(struct brw_context *brw, drm_intel_bo *bo,
uint32_t offset, uint32_t imm);
void brw_store_data_imm64(struct brw_context *brw, drm_intel_bo *bo,
diff --git a/src/mesa/drivers/dri/i965/intel_batchbuffer.c b/src/mesa/drivers/dri/i965/intel_batchbuffer.c
index 334be0c..33927af 100644
--- a/src/mesa/drivers/dri/i965/intel_batchbuffer.c
+++ b/src/mesa/drivers/dri/i965/intel_batchbuffer.c
@@ -602,6 +602,21 @@ brw_store_register_mem64(struct brw_context *brw,
}
/*
+ * Copies a 32-bit register.
+ */
+void
+brw_load_register_reg(struct brw_context *brw, uint32_t src, uint32_t dest)
+{
+ assert(brw->gen >= 8 || brw->is_haswell);
+
+ BEGIN_BATCH(3);
+ OUT_BATCH(MI_LOAD_REGISTER_REG | (3 - 2));
+ OUT_BATCH(src);
+ OUT_BATCH(dest);
+ ADVANCE_BATCH();
+}
+
+/*
* Write 32-bits of immediate data to a GPU memory buffer.
*/
void
diff --git a/src/mesa/drivers/dri/i965/intel_reg.h b/src/mesa/drivers/dri/i965/intel_reg.h
index c0d2874..40931b3 100644
--- a/src/mesa/drivers/dri/i965/intel_reg.h
+++ b/src/mesa/drivers/dri/i965/intel_reg.h
@@ -37,6 +37,7 @@
#define MI_STORE_DATA_IMM (CMD_MI | (0x20 << 23))
#define MI_LOAD_REGISTER_IMM (CMD_MI | (0x22 << 23))
+#define MI_LOAD_REGISTER_REG (CMD_MI | (0x2A << 23))
#define MI_FLUSH_DW (CMD_MI | (0x26 << 23) | 2)
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