drm/amdgpu: Add SOC partition funcs for GC v9.4.3

Switching the partition mode configuration of ASIC is SOC
level function rather than something at GFX core level. Add
partition mode switch functions as SOC specific callbacks.
Implement the XCP manager callbacks needed for partition
switch for GC 9.4.3 based ASICs.
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -278,8 +278,12 @@ struct amdgpu_gfx_funcs {
 			(*query_partition_mode)(struct amdgpu_device *adev);
 	enum amdgpu_memory_partition
 			(*query_mem_partition_mode)(struct amdgpu_device *adev);
+
 	int (*switch_partition_mode)(struct amdgpu_device *adev,
 				     enum amdgpu_gfx_partition mode);
+
+	int (*switch_gfx_partition_mode)(struct amdgpu_device *adev,
+				     int num_xccs_per_xcp);
 };
 
 struct sq_work {

drivers/gpu/drm/amd/amdgpu/aqua_vanjaram_reg_init.c

@@ -24,6 +24,12 @@
 #include "soc15.h"
 
 #include "soc15_common.h"
+#include "amdgpu_xcp.h"
+
+#define XCP_INST_MASK(num_inst, xcp_id)                                        \
+	(num_inst ? GENMASK(num_inst - 1, 0) << (xcp_id * num_inst) : 0)
+
+#define AMDGPU_XCP_OPS_KFD	(1 << 0)
 
 void aqua_vanjaram_doorbell_index_init(struct amdgpu_device *adev)
 {
@@ -119,3 +125,229 @@ u64 aqua_vanjaram_encode_ext_smn_addressing(int ext_id)
 
 	return ext_offset;
 }
+
+static int aqua_vanjaram_query_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr)
+{
+	enum amdgpu_gfx_partition mode = AMDGPU_UNKNOWN_COMPUTE_PARTITION_MODE;
+	struct amdgpu_device *adev = xcp_mgr->adev;
+
+	if (adev->nbio.funcs->get_compute_partition_mode)
+		mode = adev->nbio.funcs->get_compute_partition_mode(adev);
+
+	return mode;
+}
+
+int __aqua_vanjaram_get_xcc_per_xcp(struct amdgpu_xcp_mgr *xcp_mgr, int mode)
+{
+	int num_xcc, num_xcc_per_xcp = 0;
+
+	num_xcc = NUM_XCC(xcp_mgr->adev->gfx.xcc_mask);
+
+	switch (mode) {
+	case AMDGPU_SPX_PARTITION_MODE:
+		num_xcc_per_xcp = num_xcc;
+		break;
+	case AMDGPU_DPX_PARTITION_MODE:
+		num_xcc_per_xcp = num_xcc / 2;
+		break;
+	case AMDGPU_TPX_PARTITION_MODE:
+		num_xcc_per_xcp = num_xcc / 3;
+		break;
+	case AMDGPU_QPX_PARTITION_MODE:
+		num_xcc_per_xcp = num_xcc / 4;
+		break;
+	case AMDGPU_CPX_PARTITION_MODE:
+		num_xcc_per_xcp = 1;
+		break;
+	}
+
+	return num_xcc_per_xcp;
+}
+
+int __aqua_vanjaram_get_xcp_ip_info(struct amdgpu_xcp_mgr *xcp_mgr, int xcp_id,
+				    enum AMDGPU_XCP_IP_BLOCK ip_id,
+				    struct amdgpu_xcp_ip *ip)
+{
+	struct amdgpu_device *adev = xcp_mgr->adev;
+	int num_xcc_xcp, num_sdma_xcp, num_vcn_xcp;
+	int num_sdma, num_vcn;
+
+	num_sdma = adev->sdma.num_instances;
+	num_vcn = adev->vcn.num_vcn_inst;
+
+	switch (xcp_mgr->mode) {
+	case AMDGPU_SPX_PARTITION_MODE:
+		num_sdma_xcp = num_sdma;
+		num_vcn_xcp = num_vcn;
+		break;
+	case AMDGPU_DPX_PARTITION_MODE:
+		num_sdma_xcp = num_sdma / 2;
+		num_vcn_xcp = num_vcn / 2;
+		break;
+	case AMDGPU_TPX_PARTITION_MODE:
+		num_sdma_xcp = num_sdma / 3;
+		num_vcn_xcp = num_vcn / 3;
+		break;
+	case AMDGPU_QPX_PARTITION_MODE:
+		num_sdma_xcp = num_sdma / 4;
+		num_vcn_xcp = num_vcn / 4;
+		break;
+	case AMDGPU_CPX_PARTITION_MODE:
+		num_sdma_xcp = 2;
+		num_vcn_xcp = num_vcn ? 1 : 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	num_xcc_xcp = adev->gfx.num_xcc_per_xcp;
+
+	switch (ip_id) {
+	case AMDGPU_XCP_GFXHUB:
+		ip->inst_mask = XCP_INST_MASK(num_xcc_xcp, xcp_id);
+		/* TODO : Assign IP funcs */
+		break;
+	case AMDGPU_XCP_GFX:
+		ip->inst_mask = XCP_INST_MASK(num_xcc_xcp, xcp_id);
+		/* TODO : Assign IP funcs */
+		break;
+	case AMDGPU_XCP_SDMA:
+		ip->inst_mask = XCP_INST_MASK(num_sdma_xcp, xcp_id);
+		/* TODO : Assign IP funcs */
+		break;
+	case AMDGPU_XCP_VCN:
+		ip->inst_mask = XCP_INST_MASK(num_vcn_xcp, xcp_id);
+		/* TODO : Assign IP funcs */
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	ip->ip_id = ip_id;
+
+	return 0;
+}
+
+static bool __aqua_vanjaram_is_valid_mode(struct amdgpu_xcp_mgr *xcp_mgr,
+					  enum amdgpu_gfx_partition mode)
+{
+	int num_xcc, num_xccs_per_xcp;
+
+	num_xcc = NUM_XCC(xcp_mgr->adev->gfx.xcc_mask);
+	switch (mode) {
+	case AMDGPU_SPX_PARTITION_MODE:
+		return num_xcc > 0;
+	case AMDGPU_DPX_PARTITION_MODE:
+		return (num_xcc % 4) == 0;
+	case AMDGPU_TPX_PARTITION_MODE:
+		return (num_xcc % 3) == 0;
+	case AMDGPU_QPX_PARTITION_MODE:
+		num_xccs_per_xcp = num_xcc / 4;
+		return (num_xccs_per_xcp >= 2);
+	case AMDGPU_CPX_PARTITION_MODE:
+		return (num_xcc > 1);
+	default:
+		return false;
+	}
+
+	return false;
+}
+
+static int __aqua_vanjaram_pre_partition_switch(struct amdgpu_xcp_mgr *xcp_mgr, u32 flags)
+{
+	/* TODO:
+	 * Stop user queues and threads, and make sure GPU is empty of work.
+	 */
+
+	if (flags & AMDGPU_XCP_OPS_KFD)
+		amdgpu_amdkfd_device_fini_sw(xcp_mgr->adev);
+
+	return 0;
+}
+
+static int __aqua_vanjaram_post_partition_switch(struct amdgpu_xcp_mgr *xcp_mgr, u32 flags)
+{
+	int ret = 0;
+
+	if (flags & AMDGPU_XCP_OPS_KFD) {
+		amdgpu_amdkfd_device_probe(xcp_mgr->adev);
+		amdgpu_amdkfd_device_init(xcp_mgr->adev);
+		/* If KFD init failed, return failure */
+		if (!xcp_mgr->adev->kfd.init_complete)
+			ret = -EIO;
+	}
+
+	return ret;
+}
+
+static int aqua_vanjaram_switch_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr,
+					       int mode, int *num_xcps)
+{
+	int num_xcc_per_xcp, num_xcc, ret;
+	struct amdgpu_device *adev;
+	u32 flags = 0;
+
+	adev = xcp_mgr->adev;
+	num_xcc = NUM_XCC(adev->gfx.xcc_mask);
+
+	if (!__aqua_vanjaram_is_valid_mode(xcp_mgr, mode))
+		return -EINVAL;
+
+	if (adev->kfd.init_complete)
+		flags |= AMDGPU_XCP_OPS_KFD;
+
+	if (flags & AMDGPU_XCP_OPS_KFD) {
+		ret = amdgpu_amdkfd_check_and_lock_kfd(adev);
+		if (ret)
+			goto out;
+	}
+
+	ret = __aqua_vanjaram_pre_partition_switch(xcp_mgr, flags);
+	if (ret)
+		goto unlock;
+
+	num_xcc_per_xcp = __aqua_vanjaram_get_xcc_per_xcp(xcp_mgr, mode);
+	if (adev->gfx.funcs->switch_gfx_partition_mode)
+		adev->gfx.funcs->switch_gfx_partition_mode(xcp_mgr->adev,
+						       num_xcc_per_xcp);
+
+	if (adev->nbio.funcs->set_compute_partition_mode)
+		adev->nbio.funcs->set_compute_partition_mode(adev, mode);
+
+	ret = __aqua_vanjaram_post_partition_switch(xcp_mgr, flags);
+unlock:
+	if (flags & AMDGPU_XCP_OPS_KFD)
+		amdgpu_amdkfd_unlock_kfd(adev);
+out:
+	return ret;
+}
+
+int aqua_vanjaram_get_xcp_ip_details(struct amdgpu_xcp_mgr *xcp_mgr, int xcp_id,
+				     enum AMDGPU_XCP_IP_BLOCK ip_id,
+				     struct amdgpu_xcp_ip *ip)
+{
+	if (!ip)
+		return -EINVAL;
+
+	return __aqua_vanjaram_get_xcp_ip_info(xcp_mgr, xcp_id, ip_id, ip);
+}
+
+struct amdgpu_xcp_mgr_funcs aqua_vanjaram_xcp_funcs = {
+	.switch_partition_mode = &aqua_vanjaram_switch_partition_mode,
+	.query_partition_mode = &aqua_vanjaram_query_partition_mode,
+	.get_ip_details = &aqua_vanjaram_get_xcp_ip_details
+};
+
+static int aqua_vanjaram_xcp_mgr_init(struct amdgpu_device *adev)
+{
+	int ret;
+
+	ret = amdgpu_xcp_mgr_init(adev, AMDGPU_UNKNOWN_COMPUTE_PARTITION_MODE, 1,
+				  &aqua_vanjaram_xcp_funcs);
+	if (ret)
+		return ret;
+
+	/* TODO: Default memory node affinity init */
+
+	return ret;
+}