[S] Change in coreboot[master]: soc/amd/mendocino/include/data_fabric: add DF IO decode registers

[Felix Held (Code Review)]

Attention is currently required from: Fred Reitberger, Jason Glenesk, Matt DeVillier, Raul Rangel.

Felix Held has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/76957?usp=email )

Change subject: soc/amd/mendocino/include/data_fabric: add DF IO decode registers
......................................................................

soc/amd/mendocino/include/data_fabric: add DF IO decode registers

PPRs #57243 Rev 3.02 and #56558 Rev 3.04 were used as a reference.

Signed-off-by: Felix Held 
Change-Id: Ic68e73e28362abc5d812839b40282114c7ba25ec
---
M src/soc/amd/mendocino/include/soc/data_fabric.h
1 file changed, 46 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/57/76957/1

diff --git a/src/soc/amd/mendocino/include/soc/data_fabric.h b/src/soc/amd/mendocino/include/soc/data_fabric.h
index 052e913..f60b40b 100644
--- a/src/soc/amd/mendocino/include/soc/data_fabric.h
+++ b/src/soc/amd/mendocino/include/soc/data_fabric.h
@@ -8,6 +8,52 @@

#define IOMS0_FABRIC_ID		9

+#define DF_IO_BASE0		DF_REG_ID(0, 0xc0)
+#define DF_IO_LIMIT0		DF_REG_ID(0, 0xc4)
+
+#define DF_IO_REG0_OFFSET(instance)	((instance) * 2 * sizeof(uint32_t))
+#define DF_IO_BASE0(reg)		(DF_IO_BASE0 + DF_IO_REG_OFFSET(reg))
+#define DF_IO_LIMIT0(reg)		(DF_IO_LIMIT0 + DF_IO_REG_OFFSET(reg))
+
+#if CONFIG(SOC_AMD_REMBRANDT)
+#define DF_IO_BASE8		DF_REG_ID(6, 0xbc)
+#define DF_IO_LIMIT8		DF_REG_ID(6, 0xcc)
+#define DF_IO_REG_COUNT		12
+#define DF_IO_BASE(reg)		((reg) < 8 ? DF_IO_BASE0(reg) :
+					DF_IO_BASE8 + ((reg) - 8) * sizeof(uint32_t))
+#define DF_IO_LIMIT(reg)	((reg) < 8 ? DF_IO_LIMIT0(reg) :
+					DF_IO_LIMIT8 + ((reg) - 8) * sizeof(uint32_t))
+#else
+#define DF_IO_REG_COUNT		8
+#define DF_IO_BASE(reg)		DF_IO_BASE0(reg)
+#define DF_IO_LIMIT(reg)	DF_IO_LIMIT0(reg)
+#endif
+
+union df_io_base {
+	struct {
+		uint32_t re		:  1; /* [ 0.. 0] */
+		uint32_t we		:  1; /* [ 1.. 1] */
+		uint32_t		:  3; /* [ 2.. 4] */
+		uint32_t ie		:  1; /* [ 5.. 5] */
+		uint32_t		:  6; /* [ 6..11] */
+		uint32_t io_base	: 13; /* [12..24] */
+		uint32_t		:  7; /* [25..31] */
+	};
+	uint32_t raw;
+};
+
+union df_io_limit {
+	struct {
+		uint32_t dst_fabric_id	:  4; /* [ 0.. 3] */
+		uint32_t		:  8; /* [ 4..11] */
+		uint32_t io_limit	: 13; /* [12..24] */
+		uint32_t		:  7; /* [25..31] */
+	};
+	uint32_t raw;
+};
+
+#define DF_IO_ADDR_SHIFT		12
+
 #define DF_MMIO_BASE0		DF_REG_ID(0, 0x200)
 #define DF_MMIO_LIMIT0		DF_REG_ID(0, 0x204)
 #define   DF_MMIO_SHIFT		16