drm/panfrost: Add specific register offset macros for JS and MMU AS

Each Panfrost job has its own job slot and MMU address space set of
registers, which are selected with a job-specific index.

Turn the shift and stride used for selection of the right register set base
into a define rather than using magic numbers.
Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220729144610.2105223-2-adrian.larumbe@collabora.com

drivers/gpu/drm/panfrost/panfrost_regs.h

@@ -226,23 +226,25 @@
 #define JOB_INT_MASK_DONE(j)		BIT(j)
 
 #define JS_BASE				0x1800
-#define JS_HEAD_LO(n)			(JS_BASE + ((n) * 0x80) + 0x00)
-#define JS_HEAD_HI(n)			(JS_BASE + ((n) * 0x80) + 0x04)
-#define JS_TAIL_LO(n)			(JS_BASE + ((n) * 0x80) + 0x08)
-#define JS_TAIL_HI(n)			(JS_BASE + ((n) * 0x80) + 0x0c)
-#define JS_AFFINITY_LO(n)		(JS_BASE + ((n) * 0x80) + 0x10)
-#define JS_AFFINITY_HI(n)		(JS_BASE + ((n) * 0x80) + 0x14)
-#define JS_CONFIG(n)			(JS_BASE + ((n) * 0x80) + 0x18)
-#define JS_XAFFINITY(n)			(JS_BASE + ((n) * 0x80) + 0x1c)
-#define JS_COMMAND(n)			(JS_BASE + ((n) * 0x80) + 0x20)
-#define JS_STATUS(n)			(JS_BASE + ((n) * 0x80) + 0x24)
-#define JS_HEAD_NEXT_LO(n)		(JS_BASE + ((n) * 0x80) + 0x40)
-#define JS_HEAD_NEXT_HI(n)		(JS_BASE + ((n) * 0x80) + 0x44)
-#define JS_AFFINITY_NEXT_LO(n)		(JS_BASE + ((n) * 0x80) + 0x50)
-#define JS_AFFINITY_NEXT_HI(n)		(JS_BASE + ((n) * 0x80) + 0x54)
-#define JS_CONFIG_NEXT(n)		(JS_BASE + ((n) * 0x80) + 0x58)
-#define JS_COMMAND_NEXT(n)		(JS_BASE + ((n) * 0x80) + 0x60)
-#define JS_FLUSH_ID_NEXT(n)		(JS_BASE + ((n) * 0x80) + 0x70)
+#define JS_SLOT_STRIDE			0x80
+
+#define JS_HEAD_LO(n)			(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x00)
+#define JS_HEAD_HI(n)			(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x04)
+#define JS_TAIL_LO(n)			(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x08)
+#define JS_TAIL_HI(n)			(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x0c)
+#define JS_AFFINITY_LO(n)		(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x10)
+#define JS_AFFINITY_HI(n)		(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x14)
+#define JS_CONFIG(n)			(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x18)
+#define JS_XAFFINITY(n)			(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x1c)
+#define JS_COMMAND(n)			(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x20)
+#define JS_STATUS(n)			(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x24)
+#define JS_HEAD_NEXT_LO(n)		(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x40)
+#define JS_HEAD_NEXT_HI(n)		(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x44)
+#define JS_AFFINITY_NEXT_LO(n)		(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x50)
+#define JS_AFFINITY_NEXT_HI(n)		(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x54)
+#define JS_CONFIG_NEXT(n)		(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x58)
+#define JS_COMMAND_NEXT(n)		(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x60)
+#define JS_FLUSH_ID_NEXT(n)		(JS_BASE + ((n) * JS_SLOT_STRIDE) + 0x70)
 
 /* Possible values of JS_CONFIG and JS_CONFIG_NEXT registers */
 #define JS_CONFIG_START_FLUSH_CLEAN		BIT(8)
@@ -281,7 +283,9 @@
 #define AS_COMMAND_FLUSH_MEM		0x05	/* Wait for memory accesses to complete, flush all the L1s cache then
 						   flush all L2 caches then issue a flush region command to all MMUs */
 
-#define MMU_AS(as)			(0x2400 + ((as) << 6))
+#define MMU_BASE			0x2400
+#define MMU_AS_SHIFT			0x06
+#define MMU_AS(as)			(MMU_BASE + ((as) << MMU_AS_SHIFT))
 
 #define AS_TRANSTAB_LO(as)		(MMU_AS(as) + 0x00) /* (RW) Translation Table Base Address for address space n, low word */
 #define AS_TRANSTAB_HI(as)		(MMU_AS(as) + 0x04) /* (RW) Translation Table Base Address for address space n, high word */
@@ -300,6 +304,8 @@
 #define AS_FAULTEXTRA_LO(as)		(MMU_AS(as) + 0x38) /* (RO) Secondary fault address for address space n, low word */
 #define AS_FAULTEXTRA_HI(as)		(MMU_AS(as) + 0x3C) /* (RO) Secondary fault address for address space n, high word */
 
+#define MMU_AS_STRIDE			(1 << MMU_AS_SHIFT)
+
 /*
  * Begin LPAE MMU TRANSTAB register values
  */