drm/amdgpu: bypass bios dependent operations

Since bios reading does not work currently so just bypass all operations
related to bios

v2: hardcode the vram info for APP_APU case (hawking)
v3: correct the vram_width with channel number * channel size (lijo)
Signed-off-by: Shiwu Zhang <shiwu.zhang@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@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_device.c

@@ -1389,6 +1389,15 @@ int amdgpu_device_resize_fb_bar(struct amdgpu_device *adev)
 	return 0;
 }
 
+static bool amdgpu_device_read_bios(struct amdgpu_device *adev)
+{
+	if (hweight32(adev->aid_mask) && (adev->flags & AMD_IS_APU)) {
+		return false;
+	}
+
+	return true;
+}
+
 /*
  * GPU helpers function.
  */
@@ -1408,6 +1417,9 @@ bool amdgpu_device_need_post(struct amdgpu_device *adev)
 	if (amdgpu_sriov_vf(adev))
 		return false;
 
+	if (!amdgpu_device_read_bios(adev))
+		return false;
+
 	if (amdgpu_passthrough(adev)) {
 		/* for FIJI: In whole GPU pass-through virtualization case, after VM reboot
 		 * some old smc fw still need driver do vPost otherwise gpu hang, while
@@ -2318,14 +2330,16 @@ static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
 				return r;
 
 			/* Read BIOS */
-			if (!amdgpu_get_bios(adev))
-				return -EINVAL;
+			if (amdgpu_device_read_bios(adev)) {
+				if (!amdgpu_get_bios(adev))
+					return -EINVAL;
 
-			r = amdgpu_atombios_init(adev);
-			if (r) {
-				dev_err(adev->dev, "amdgpu_atombios_init failed\n");
-				amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_INIT_FAIL, 0, 0);
-				return r;
+				r = amdgpu_atombios_init(adev);
+				if (r) {
+					dev_err(adev->dev, "amdgpu_atombios_init failed\n");
+					amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_INIT_FAIL, 0, 0);
+					return r;
+				}
 			}
 
 			/*get pf2vf msg info at it's earliest time*/
@@ -3945,25 +3959,27 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 		}
 	}
 
-	if (adev->is_atom_fw) {
-		/* Initialize clocks */
-		r = amdgpu_atomfirmware_get_clock_info(adev);
-		if (r) {
-			dev_err(adev->dev, "amdgpu_atomfirmware_get_clock_info failed\n");
-			amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_GET_CLOCK_FAIL, 0, 0);
-			goto failed;
-		}
-	} else {
-		/* Initialize clocks */
-		r = amdgpu_atombios_get_clock_info(adev);
-		if (r) {
-			dev_err(adev->dev, "amdgpu_atombios_get_clock_info failed\n");
-			amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_GET_CLOCK_FAIL, 0, 0);
-			goto failed;
+	if (adev->bios) {
+		if (adev->is_atom_fw) {
+			/* Initialize clocks */
+			r = amdgpu_atomfirmware_get_clock_info(adev);
+			if (r) {
+				dev_err(adev->dev, "amdgpu_atomfirmware_get_clock_info failed\n");
+				amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_GET_CLOCK_FAIL, 0, 0);
+				goto failed;
+			}
+		} else {
+			/* Initialize clocks */
+			r = amdgpu_atombios_get_clock_info(adev);
+			if (r) {
+				dev_err(adev->dev, "amdgpu_atombios_get_clock_info failed\n");
+				amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_GET_CLOCK_FAIL, 0, 0);
+				goto failed;
+			}
+			/* init i2c buses */
+			if (!amdgpu_device_has_dc_support(adev))
+				amdgpu_atombios_i2c_init(adev);
 		}
-		/* init i2c buses */
-		if (!amdgpu_device_has_dc_support(adev))
-			amdgpu_atombios_i2c_init(adev);
 	}
 
 fence_driver_init:

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

@@ -1696,7 +1696,7 @@ static int amdgpu_ttm_reserve_tmr(struct amdgpu_device *adev)
 	uint32_t reserve_size = 0;
 	int ret;
 
-	if (!amdgpu_sriov_vf(adev)) {
+	if (adev->bios && !amdgpu_sriov_vf(adev)) {
 		if (amdgpu_atomfirmware_mem_training_supported(adev))
 			mem_train_support = true;
 		else
@@ -1713,7 +1713,10 @@ static int amdgpu_ttm_reserve_tmr(struct amdgpu_device *adev)
 	if (adev->bios)
 		reserve_size =
 			amdgpu_atomfirmware_get_fw_reserved_fb_size(adev);
-	if (!reserve_size)
+
+	if (!adev->bios && adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 4, 3))
+		reserve_size = max(reserve_size, (uint32_t)280 << 20);
+	else if (!reserve_size)
 		reserve_size = DISCOVERY_TMR_OFFSET;
 
 	if (mem_train_support) {

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

@@ -2010,34 +2010,49 @@ static int gmc_v9_0_sw_init(void *handle)
 
 	spin_lock_init(&adev->gmc.invalidate_lock);
 
-	r = amdgpu_atomfirmware_get_vram_info(adev,
-		&vram_width, &vram_type, &vram_vendor);
-	if (amdgpu_sriov_vf(adev))
-		/* For Vega10 SR-IOV, vram_width can't be read from ATOM as RAVEN,
-		 * and DF related registers is not readable, seems hardcord is the
-		 * only way to set the correct vram_width
-		 */
-		adev->gmc.vram_width = 2048;
-	else if (amdgpu_emu_mode != 1)
-		adev->gmc.vram_width = vram_width;
+	if (!(adev->bios) || adev->gmc.is_app_apu) {
+		if (adev->flags & AMD_IS_APU) {
+			if (adev->gmc.is_app_apu) {
+				adev->gmc.vram_type = AMDGPU_VRAM_TYPE_HBM;
+				adev->gmc.vram_width = 128 * 64;
+			} else {
+				adev->gmc.vram_type = AMDGPU_VRAM_TYPE_DDR4;
+				adev->gmc.vram_width = 64 * 64;
+			}
+		} else {
+			adev->gmc.vram_type = AMDGPU_VRAM_TYPE_HBM;
+			adev->gmc.vram_width = 128 * 64;
+		}
+	} else {
+		r = amdgpu_atomfirmware_get_vram_info(adev,
+			&vram_width, &vram_type, &vram_vendor);
+		if (amdgpu_sriov_vf(adev))
+			/* For Vega10 SR-IOV, vram_width can't be read from ATOM as RAVEN,
+			 * and DF related registers is not readable, seems hardcord is the
+			 * only way to set the correct vram_width
+			 */
+			adev->gmc.vram_width = 2048;
+		else if (amdgpu_emu_mode != 1)
+			adev->gmc.vram_width = vram_width;
 
-	if (!adev->gmc.vram_width) {
-		int chansize, numchan;
+		if (!adev->gmc.vram_width) {
+			int chansize, numchan;
 
-		/* hbm memory channel size */
-		if (adev->flags & AMD_IS_APU)
-			chansize = 64;
-		else
-			chansize = 128;
-		if (adev->df.funcs &&
-		    adev->df.funcs->get_hbm_channel_number) {
-			numchan = adev->df.funcs->get_hbm_channel_number(adev);
-			adev->gmc.vram_width = numchan * chansize;
+			/* hbm memory channel size */
+			if (adev->flags & AMD_IS_APU)
+				chansize = 64;
+			else
+				chansize = 128;
+			if (adev->df.funcs &&
+			    adev->df.funcs->get_hbm_channel_number) {
+				numchan = adev->df.funcs->get_hbm_channel_number(adev);
+				adev->gmc.vram_width = numchan * chansize;
+			}
 		}
-	}
 
-	adev->gmc.vram_type = vram_type;
-	adev->gmc.vram_vendor = vram_vendor;
+		adev->gmc.vram_type = vram_type;
+		adev->gmc.vram_vendor = vram_vendor;
+	}
 	switch (adev->ip_versions[GC_HWIP][0]) {
 	case IP_VERSION(9, 1, 0):
 	case IP_VERSION(9, 2, 2):