[v4] drm/i915: Move LRC register offsets to a header file

Submitted by Michel Thierry on Jan. 23, 2018, 7:50 p.m.

Details

Message ID 20180123195057.22363-1-michel.thierry@intel.com
State New
Headers show
Series "drm/i915: Move LRC register offsets to a header file" ( rev: 4 ) in Intel GFX

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Commit Message

Michel Thierry Jan. 23, 2018, 7:50 p.m.
Newer platforms may have subtle offset changes, which will increase the
number of defines, so it is probably better to start moving them to its
own header file. Also move the macros used while setting the reg state.

v2: Rename to intel_lrc_reg.h, to be consistent with i915_reg.h and
intel_guc_reg.h (Chris)

v3: License notice shenanigans.

v4: Documentation/process/coding-style.rst is always right (Chris)

Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_lrc.c     | 50 +-----------------------------
 drivers/gpu/drm/i915/intel_lrc_reg.h | 60 ++++++++++++++++++++++++++++++++++++
 2 files changed, 61 insertions(+), 49 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/intel_lrc_reg.h

Patch hide | download patch | download mbox

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index bb6debbeebc0..68d777272e1b 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -137,6 +137,7 @@ 
 #include <drm/i915_drm.h>
 #include "i915_drv.h"
 #include "i915_gem_render_state.h"
+#include "intel_lrc_reg.h"
 #include "intel_mocs.h"
 
 #define RING_EXECLIST_QFULL		(1 << 0x2)
@@ -156,55 +157,6 @@ 
 #define GEN8_CTX_STATUS_COMPLETED_MASK \
 	 (GEN8_CTX_STATUS_COMPLETE | GEN8_CTX_STATUS_PREEMPTED)
 
-#define CTX_LRI_HEADER_0		0x01
-#define CTX_CONTEXT_CONTROL		0x02
-#define CTX_RING_HEAD			0x04
-#define CTX_RING_TAIL			0x06
-#define CTX_RING_BUFFER_START		0x08
-#define CTX_RING_BUFFER_CONTROL		0x0a
-#define CTX_BB_HEAD_U			0x0c
-#define CTX_BB_HEAD_L			0x0e
-#define CTX_BB_STATE			0x10
-#define CTX_SECOND_BB_HEAD_U		0x12
-#define CTX_SECOND_BB_HEAD_L		0x14
-#define CTX_SECOND_BB_STATE		0x16
-#define CTX_BB_PER_CTX_PTR		0x18
-#define CTX_RCS_INDIRECT_CTX		0x1a
-#define CTX_RCS_INDIRECT_CTX_OFFSET	0x1c
-#define CTX_LRI_HEADER_1		0x21
-#define CTX_CTX_TIMESTAMP		0x22
-#define CTX_PDP3_UDW			0x24
-#define CTX_PDP3_LDW			0x26
-#define CTX_PDP2_UDW			0x28
-#define CTX_PDP2_LDW			0x2a
-#define CTX_PDP1_UDW			0x2c
-#define CTX_PDP1_LDW			0x2e
-#define CTX_PDP0_UDW			0x30
-#define CTX_PDP0_LDW			0x32
-#define CTX_LRI_HEADER_2		0x41
-#define CTX_R_PWR_CLK_STATE		0x42
-#define CTX_GPGPU_CSR_BASE_ADDRESS	0x44
-
-#define CTX_REG(reg_state, pos, reg, val) do { \
-	(reg_state)[(pos)+0] = i915_mmio_reg_offset(reg); \
-	(reg_state)[(pos)+1] = (val); \
-} while (0)
-
-#define ASSIGN_CTX_PDP(ppgtt, reg_state, n) do {		\
-	const u64 _addr = i915_page_dir_dma_addr((ppgtt), (n));	\
-	reg_state[CTX_PDP ## n ## _UDW+1] = upper_32_bits(_addr); \
-	reg_state[CTX_PDP ## n ## _LDW+1] = lower_32_bits(_addr); \
-} while (0)
-
-#define ASSIGN_CTX_PML4(ppgtt, reg_state) do { \
-	reg_state[CTX_PDP0_UDW + 1] = upper_32_bits(px_dma(&ppgtt->pml4)); \
-	reg_state[CTX_PDP0_LDW + 1] = lower_32_bits(px_dma(&ppgtt->pml4)); \
-} while (0)
-
-#define GEN8_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT	0x17
-#define GEN9_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT	0x26
-#define GEN10_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT	0x19
-
 /* Typical size of the average request (2 pipecontrols and a MI_BB) */
 #define EXECLISTS_REQUEST_SIZE 64 /* bytes */
 #define WA_TAIL_DWORDS 2
diff --git a/drivers/gpu/drm/i915/intel_lrc_reg.h b/drivers/gpu/drm/i915/intel_lrc_reg.h
new file mode 100644
index 000000000000..7dc53707ef1a
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_lrc_reg.h
@@ -0,0 +1,60 @@ 
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2014-2018 Intel Corporation
+ */
+
+#ifndef _INTEL_LRC_REG_H_
+#define _INTEL_LRC_REG_H_
+
+/* GEN8+ Reg State Context */
+#define CTX_LRI_HEADER_0		0x01
+#define CTX_CONTEXT_CONTROL		0x02
+#define CTX_RING_HEAD			0x04
+#define CTX_RING_TAIL			0x06
+#define CTX_RING_BUFFER_START		0x08
+#define CTX_RING_BUFFER_CONTROL		0x0a
+#define CTX_BB_HEAD_U			0x0c
+#define CTX_BB_HEAD_L			0x0e
+#define CTX_BB_STATE			0x10
+#define CTX_SECOND_BB_HEAD_U		0x12
+#define CTX_SECOND_BB_HEAD_L		0x14
+#define CTX_SECOND_BB_STATE		0x16
+#define CTX_BB_PER_CTX_PTR		0x18
+#define CTX_RCS_INDIRECT_CTX		0x1a
+#define CTX_RCS_INDIRECT_CTX_OFFSET	0x1c
+#define CTX_LRI_HEADER_1		0x21
+#define CTX_CTX_TIMESTAMP		0x22
+#define CTX_PDP3_UDW			0x24
+#define CTX_PDP3_LDW			0x26
+#define CTX_PDP2_UDW			0x28
+#define CTX_PDP2_LDW			0x2a
+#define CTX_PDP1_UDW			0x2c
+#define CTX_PDP1_LDW			0x2e
+#define CTX_PDP0_UDW			0x30
+#define CTX_PDP0_LDW			0x32
+#define CTX_LRI_HEADER_2		0x41
+#define CTX_R_PWR_CLK_STATE		0x42
+#define CTX_GPGPU_CSR_BASE_ADDRESS	0x44
+
+#define CTX_REG(reg_state, pos, reg, val) do { \
+	(reg_state)[(pos)+0] = i915_mmio_reg_offset(reg); \
+	(reg_state)[(pos)+1] = (val); \
+} while (0)
+
+#define ASSIGN_CTX_PDP(ppgtt, reg_state, n) do {		\
+	const u64 _addr = i915_page_dir_dma_addr((ppgtt), (n));	\
+	reg_state[CTX_PDP ## n ## _UDW+1] = upper_32_bits(_addr); \
+	reg_state[CTX_PDP ## n ## _LDW+1] = lower_32_bits(_addr); \
+} while (0)
+
+#define ASSIGN_CTX_PML4(ppgtt, reg_state) do { \
+	reg_state[CTX_PDP0_UDW + 1] = upper_32_bits(px_dma(&ppgtt->pml4)); \
+	reg_state[CTX_PDP0_LDW + 1] = lower_32_bits(px_dma(&ppgtt->pml4)); \
+} while (0)
+
+#define GEN8_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT	0x17
+#define GEN9_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT	0x26
+#define GEN10_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT	0x19
+
+#endif /* _INTEL_LRC_REG_H_ */

Comments

Quoting Michel Thierry (2018-01-23 19:50:57)
> Newer platforms may have subtle offset changes, which will increase the
> number of defines, so it is probably better to start moving them to its
> own header file. Also move the macros used while setting the reg state.
> 
> v2: Rename to intel_lrc_reg.h, to be consistent with i915_reg.h and
> intel_guc_reg.h (Chris)
> 
> v3: License notice shenanigans.
> 
> v4: Documentation/process/coding-style.rst is always right (Chris)
> 
> Signed-off-by: Michel Thierry <michel.thierry@intel.com>
> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
> Cc: Lucas De Marchi <lucas.demarchi@intel.com>
> Cc: Chris Wilson <chris@chris-wilson.co.uk>
> ---
> +#define CTX_REG(reg_state, pos, reg, val) do { \
> +       (reg_state)[(pos)+0] = i915_mmio_reg_offset(reg); \
> +       (reg_state)[(pos)+1] = (val); \
> +} while (0)
> +
> +#define ASSIGN_CTX_PDP(ppgtt, reg_state, n) do {               \
> +       const u64 _addr = i915_page_dir_dma_addr((ppgtt), (n)); \
> +       reg_state[CTX_PDP ## n ## _UDW+1] = upper_32_bits(_addr); \
> +       reg_state[CTX_PDP ## n ## _LDW+1] = lower_32_bits(_addr); \

I know this is a mechanical copy, but we should (reg_state)
nevertheless. We might as well go the extra step and do
u32 regs__ = (reg_state); to silence checkpatch (and pos__).

> +} while (0)
> +
> +#define ASSIGN_CTX_PML4(ppgtt, reg_state) do { \
> +       reg_state[CTX_PDP0_UDW + 1] = upper_32_bits(px_dma(&ppgtt->pml4)); \
> +       reg_state[CTX_PDP0_LDW + 1] = lower_32_bits(px_dma(&ppgtt->pml4)); \

const u64 addr__ = px_dma() as well.

The jury is out on whether this should be one or two patches. Perfection
would probably be the checkpatch corrections followed by the move (that
way, CI shouldn't complain about the violations).
-Chris