Merge tag 'amd-drm-next-5.7-2020-03-10' of git://people.freedesktop.org/~agd5f/linux into drm-next

amd-drm-next-5.7-2020-03-10:

amdgpu:
- SR-IOV fixes
- Fix up fallout from drm load/unload callback removal
- Navi, renoir power management watermark fixes
- Refactor smu parameter handling
- Display FEC fixes
- Display DCC fixes
- HDCP fixes
- Add support for USB-C PD firmware updates
- Pollock detection fix
- Rework compute ring priority handling
- RAS fixes
- Misc cleanups

amdkfd:
- Consolidate more gfx config details in amdgpu
- Consolidate bo alloc flags
- Improve code comments
- SDMA MQD fixes
- Misc cleanups

gpu scheduler:
- Add suport for modifying the sched list

uapi:
- Clarify comments about GEM_CREATE flags that are not used by userspace.
  The kernel driver has always prevented userspace from using these.
  They are only used internally in the kernel driver.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200310212748.4519-1-alexander.deucher@amd.com

1 files changed, 121 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index d33f74100094..6d9b05e21f97 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -24,6 +24,7 @@
  */
 
 #include <linux/firmware.h>
+#include <linux/dma-mapping.h>
 
 #include "amdgpu.h"
 #include "amdgpu_psp.h"
@@ -38,6 +39,9 @@
 
 static void psp_set_funcs(struct amdgpu_device *adev);
 
+static int psp_sysfs_init(struct amdgpu_device *adev);
+static void psp_sysfs_fini(struct amdgpu_device *adev);
+
 /*
  * Due to DF Cstate management centralized to PMFW, the firmware
  * loading sequence will be updated as below:
@@ -136,6 +140,13 @@ static int psp_sw_init(void *handle)
 		return ret;
 	}
 
+	if (adev->asic_type == CHIP_NAVI10) {
+		ret= psp_sysfs_init(adev);
+		if (ret) {
+			return ret;
+		}
+	}
+
 	return 0;
 }
 
@@ -152,6 +163,10 @@ static int psp_sw_fini(void *handle)
 		release_firmware(adev->psp.ta_fw);
 		adev->psp.ta_fw = NULL;
 	}
+
+	if (adev->asic_type == CHIP_NAVI10)
+		psp_sysfs_fini(adev);
+
 	return 0;
 }
 
@@ -1816,6 +1831,97 @@ static int psp_set_powergating_state(void *handle,
 	return 0;
 }
 
+static ssize_t psp_usbc_pd_fw_sysfs_read(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	struct drm_device *ddev = dev_get_drvdata(dev);
+	struct amdgpu_device *adev = ddev->dev_private;
+	uint32_t fw_ver;
+	int ret;
+
+	if (!adev->ip_blocks[AMD_IP_BLOCK_TYPE_PSP].status.late_initialized) {
+		DRM_INFO("PSP block is not ready yet.");
+		return -EBUSY;
+	}
+
+	mutex_lock(&adev->psp.mutex);
+	ret = psp_read_usbc_pd_fw(&adev->psp, &fw_ver);
+	mutex_unlock(&adev->psp.mutex);
+
+	if (ret) {
+		DRM_ERROR("Failed to read USBC PD FW, err = %d", ret);
+		return ret;
+	}
+
+	return snprintf(buf, PAGE_SIZE, "%x\n", fw_ver);
+}
+
+static ssize_t psp_usbc_pd_fw_sysfs_write(struct device *dev,
+						       struct device_attribute *attr,
+						       const char *buf,
+						       size_t count)
+{
+	struct drm_device *ddev = dev_get_drvdata(dev);
+	struct amdgpu_device *adev = ddev->dev_private;
+	void *cpu_addr;
+	dma_addr_t dma_addr;
+	int ret;
+	char fw_name[100];
+	const struct firmware *usbc_pd_fw;
+
+	if (!adev->ip_blocks[AMD_IP_BLOCK_TYPE_PSP].status.late_initialized) {
+		DRM_INFO("PSP block is not ready yet.");
+		return -EBUSY;
+	}
+
+	snprintf(fw_name, sizeof(fw_name), "amdgpu/%s", buf);
+	ret = request_firmware(&usbc_pd_fw, fw_name, adev->dev);
+	if (ret)
+		goto fail;
+
+	/* We need contiguous physical mem to place the FW  for psp to access */
+	cpu_addr = dma_alloc_coherent(adev->dev, usbc_pd_fw->size, &dma_addr, GFP_KERNEL);
+
+	ret = dma_mapping_error(adev->dev, dma_addr);
+	if (ret)
+		goto rel_buf;
+
+	memcpy_toio(cpu_addr, usbc_pd_fw->data, usbc_pd_fw->size);
+
+	/*
+	 * x86 specific workaround.
+	 * Without it the buffer is invisible in PSP.
+	 *
+	 * TODO Remove once PSP starts snooping CPU cache
+	 */
+#ifdef CONFIG_X86
+	clflush_cache_range(cpu_addr, (usbc_pd_fw->size & ~(L1_CACHE_BYTES - 1)));
+#endif
+
+	mutex_lock(&adev->psp.mutex);
+	ret = psp_load_usbc_pd_fw(&adev->psp, dma_addr);
+	mutex_unlock(&adev->psp.mutex);
+
+rel_buf:
+	dma_free_coherent(adev->dev, usbc_pd_fw->size, cpu_addr, dma_addr);
+	release_firmware(usbc_pd_fw);
+
+fail:
+	if (ret) {
+		DRM_ERROR("Failed to load USBC PD FW, err = %d", ret);
+		return ret;
+	}
+
+	return count;
+}
+
+static DEVICE_ATTR(usbc_pd_fw, S_IRUGO | S_IWUSR,
+		   psp_usbc_pd_fw_sysfs_read,
+		   psp_usbc_pd_fw_sysfs_write);
+
+
+
 const struct amd_ip_funcs psp_ip_funcs = {
 	.name = "psp",
 	.early_init = psp_early_init,
@@ -1834,6 +1940,21 @@ const struct amd_ip_funcs psp_ip_funcs = {
 	.set_powergating_state = psp_set_powergating_state,
 };
 
+static int psp_sysfs_init(struct amdgpu_device *adev)
+{
+	int ret = device_create_file(adev->dev, &dev_attr_usbc_pd_fw);
+
+	if (ret)
+		DRM_ERROR("Failed to create USBC PD FW control file!");
+
+	return ret;
+}
+
+static void psp_sysfs_fini(struct amdgpu_device *adev)
+{
+	device_remove_file(adev->dev, &dev_attr_usbc_pd_fw);
+}
+
 static const struct amdgpu_psp_funcs psp_funcs = {
 	.check_fw_loading_status = psp_check_fw_loading_status,
 };