drm/amdgpu/discovery: add ip discovery initial support

The IP discovery table lists is populated by the psp at power on
and includes all of the hw details on the board:
- List of IPs and MMIO offsets
- IP harvest details
- IP configuration details

v2: prefix struct and function names with 'amdgpu'
v3: read table binary from vram using mmMM_INDEX and mmMM_DATA
    update TABLE_BINARY_MAX_SIZE to 64kb (1 TMR)
    add 'instance_number' field per ip info
    consider endianness and replace uint8/16/32_t with u8/16/32
    initialize register base addresses
    initialize adev->gfx.config and adev->gfx.cu_info to replace gpu info fw
    get major and minor version using a single api
    don't expose internal data structures in amdgpu_discovery.h
v4: RCC_CONFIG_MEMSIZE is in MB units
    hold mmio_idx_lock while reading ip discovery binary
v5: pick out discovery.h as a cross-OS header
    do structure pointer cast directly
    consider endianness while using the member of structure
    convert base addresses to dword

at boot up, PSP BL copies ip discovery binary from VBIOS(SPIROM) image to the
top of the frame buffer (just below the reserved regions for PSP & SMU).

ip discovery data table includes the collection of each ip's identification
number, base addresses, version number, and harvest setting placeholder.

gc data table includes gfx info structure.
Signed-off-by: Xiaojie Yuan <xiaojie.yuan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/Makefile

@@ -54,7 +54,7 @@ amdgpu-y += amdgpu_device.o amdgpu_kms.o \
 	amdgpu_gtt_mgr.o amdgpu_vram_mgr.o amdgpu_virt.o amdgpu_atomfirmware.o \
 	amdgpu_vf_error.o amdgpu_sched.o amdgpu_debugfs.o amdgpu_ids.o \
 	amdgpu_gmc.o amdgpu_xgmi.o amdgpu_csa.o amdgpu_ras.o amdgpu_vm_cpu.o \
-	amdgpu_vm_sdma.o amdgpu_pmu.o
+	amdgpu_vm_sdma.o amdgpu_pmu.o amdgpu_discovery.o
 
 # add asic specific block
 amdgpu-$(CONFIG_DRM_AMDGPU_CIK)+= cik.o cik_ih.o kv_smc.o kv_dpm.o \

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -84,6 +84,7 @@
 #include "amdgpu_doorbell.h"
 #include "amdgpu_amdkfd.h"
 #include "amdgpu_smu.h"
+#include "amdgpu_discovery.h"
 
 #define MAX_GPU_INSTANCE		16
 
@@ -913,6 +914,9 @@ struct amdgpu_device {
 	/* display related functionality */
 	struct amdgpu_display_manager dm;
 
+	/* discovery */
+	uint8_t				*discovery;
+
 	struct amdgpu_ip_block          ip_blocks[AMDGPU_MAX_IP_NUM];
 	int				num_ip_blocks;
 	struct mutex	mn_lock;

drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.h

+/*
+ * Copyright 2018 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef __AMDGPU_DISCOVERY__
+#define __AMDGPU_DISCOVERY__
+
+int amdgpu_discovery_init(struct amdgpu_device *adev);
+void amdgpu_discovery_fini(struct amdgpu_device *adev);
+int amdgpu_discovery_reg_base_init(struct amdgpu_device *adev);
+int amdgpu_discovery_get_ip_version(struct amdgpu_device *adev, int hw_id,
+                                    int *major, int *minor);
+int amdgpu_discovery_get_gfx_info(struct amdgpu_device *adev);
+
+#endif /* __AMDGPU_DISCOVERY__ */

drivers/gpu/drm/amd/include/discovery.h

+/*
+ * Copyright 2018 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef _DISCOVERY_H_
+#define _DISCOVERY_H_
+
+#define PSP_HEADER_SIZE                 256
+#define BINARY_MAX_SIZE                 (64 << 10)
+#define BINARY_SIGNATURE                0x28211407
+#define DISCOVERY_TABLE_SIGNATURE       0x53445049
+
+typedef enum
+{
+	IP_DISCOVERY = 0,
+	GC,
+	TABLE_3,
+	TABLE_4,
+	RESERVED_1,
+	RESERVED_2,
+	TOTAL_TABLES = 6
+} table;
+
+#pragma pack(1)
+
+typedef struct table_info
+{
+	uint16_t offset;   /* Byte offset */
+	uint16_t checksum; /* Byte sum of the table */
+} table_info;
+
+typedef struct binary_header
+{
+	/* psp structure should go at the top of this structure */
+	uint32_t binary_signature; /* 0x7, 0x14, 0x21, 0x28 */
+	uint16_t binary_checksum;  /* Byte sum of the binary after this field */
+	uint16_t binary_size;      /* Binary Size*/
+	table_info table_list[TOTAL_TABLES];
+} binary_header;
+
+typedef struct die_info
+{
+	uint16_t die_id;
+	uint16_t die_offset; /* Points to the corresponding die_header structure */
+} die_info;
+
+
+typedef struct ip_discovery_header
+{
+	uint32_t signature;    /* Table Signature */
+	uint16_t version;      /* Table Version */
+	uint16_t size;         /* Table Size */
+	uint32_t id;           /* Table ID */
+	uint16_t num_dies;     /* Number of Dies */
+	die_info die_info[16]; /* list die information for up to 16 dies */
+	uint16_t padding[1];   /* padding */
+} ip_discovery_header;
+
+typedef struct ip
+{
+	uint16_t hw_id;           /* Hardware ID */
+	uint8_t number_instance;  /* instance of the IP */
+	uint8_t num_base_address; /* Number of Base Addresses */
+	uint8_t major;            /* HCID Major */
+	uint8_t minor;            /* HCID Minor */
+	uint8_t revision;         /* HCID Revision */
+#if defined(__BIG_ENDIAN)
+	uint8_t reserved : 4;     /* Placeholder field */
+	uint8_t harvest : 4;      /* Harvest */
+#else
+	uint8_t harvest : 4;      /* Harvest */
+	uint8_t reserved : 4;     /* Placeholder field */
+#endif
+	uint32_t base_address[1]; /* variable number of Addresses */
+} ip;
+
+typedef struct die_header
+{
+	uint32_t die_id;
+	uint32_t num_ips;
+} die_header;
+
+typedef struct ip_structure
+{
+	ip_discovery_header* header;
+	struct die
+	{
+		die_header *die_header;
+		ip *ip_list;
+	} die;
+} ip_structure;
+
+struct gpu_info_header {
+	uint32_t table_id;      /* table ID */
+	uint16_t version_major; /* table version */
+	uint16_t version_minor; /* table version */
+	uint32_t size;          /* size of the entire header+data in bytes */
+};
+
+struct gc_info_v1_0 {
+	struct gpu_info_header header;
+
+	uint32_t gc_num_se;
+	uint32_t gc_num_wgp0_per_sa;
+	uint32_t gc_num_wgp1_per_sa;
+	uint32_t gc_num_rb_per_se;
+	uint32_t gc_num_gl2c;
+	uint32_t gc_num_gprs;
+	uint32_t gc_num_max_gs_thds;
+	uint32_t gc_gs_table_depth;
+	uint32_t gc_gsprim_buff_depth;
+	uint32_t gc_parameter_cache_depth;
+	uint32_t gc_double_offchip_lds_buffer;
+	uint32_t gc_wave_size;
+	uint32_t gc_max_waves_per_simd;
+	uint32_t gc_max_scratch_slots_per_cu;
+	uint32_t gc_lds_size;
+	uint32_t gc_num_sc_per_se;
+	uint32_t gc_num_sa_per_se;
+	uint32_t gc_num_packer_per_sc;
+	uint32_t gc_num_gl2a;
+};
+
+#pragma pack()
+
+#endif