Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 210 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
new file mode 100644
index 000000000..e32515087
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
@@ -0,0 +1,210 @@
+/*
+ * Copyright 2019 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.
+ *
+ */
+#include <linux/pci.h>
+
+#include "amdgpu.h"
+#include "amdgpu_i2c.h"
+#include "smu_v11_0_i2c.h"
+#include "atom.h"
+#include "amdgpu_fru_eeprom.h"
+#include "amdgpu_eeprom.h"
+
+#define FRU_EEPROM_MADDR        0x60000
+
+static bool is_fru_eeprom_supported(struct amdgpu_device *adev)
+{
+	/* Only server cards have the FRU EEPROM
+	 * TODO: See if we can figure this out dynamically instead of
+	 * having to parse VBIOS versions.
+	 */
+	struct atom_context *atom_ctx = adev->mode_info.atom_context;
+
+	/* The i2c access is blocked on VF
+	 * TODO: Need other way to get the info
+	 */
+	if (amdgpu_sriov_vf(adev))
+		return false;
+
+	/* VBIOS is of the format ###-DXXXYYYY-##. For SKU identification,
+	 * we can use just the "DXXX" portion. If there were more models, we
+	 * could convert the 3 characters to a hex integer and use a switch
+	 * for ease/speed/readability. For now, 2 string comparisons are
+	 * reasonable and not too expensive
+	 */
+	switch (adev->asic_type) {
+	case CHIP_VEGA20:
+		/* D161 and D163 are the VG20 server SKUs */
+		if (strnstr(atom_ctx->vbios_version, "D161",
+			    sizeof(atom_ctx->vbios_version)) ||
+		    strnstr(atom_ctx->vbios_version, "D163",
+			    sizeof(atom_ctx->vbios_version)))
+			return true;
+		else
+			return false;
+	case CHIP_ALDEBARAN:
+		/* All Aldebaran SKUs have the FRU */
+		return true;
+	case CHIP_SIENNA_CICHLID:
+		if (strnstr(atom_ctx->vbios_version, "D603",
+		    sizeof(atom_ctx->vbios_version))) {
+			if (strnstr(atom_ctx->vbios_version, "D603GLXE",
+			    sizeof(atom_ctx->vbios_version)))
+				return false;
+			else
+				return true;
+		} else {
+			return false;
+		}
+	default:
+		return false;
+	}
+}
+
+static int amdgpu_fru_read_eeprom(struct amdgpu_device *adev, uint32_t addrptr,
+				  unsigned char *buf, size_t buf_size)
+{
+	int ret;
+	u8 size;
+
+	ret = amdgpu_eeprom_read(adev->pm.fru_eeprom_i2c_bus, addrptr, buf, 1);
+	if (ret < 1) {
+		DRM_WARN("FRU: Failed to get size field");
+		return ret;
+	}
+
+	/* The size returned by the i2c requires subtraction of 0xC0 since the
+	 * size apparently always reports as 0xC0+actual size.
+	 */
+	size = buf[0] & 0x3F;
+	size = min_t(size_t, size, buf_size);
+
+	ret = amdgpu_eeprom_read(adev->pm.fru_eeprom_i2c_bus, addrptr + 1,
+				 buf, size);
+	if (ret < 1) {
+		DRM_WARN("FRU: Failed to get data field");
+		return ret;
+	}
+
+	return size;
+}
+
+int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
+{
+	unsigned char buf[AMDGPU_PRODUCT_NAME_LEN];
+	u32 addrptr;
+	int size, len;
+
+	if (!is_fru_eeprom_supported(adev))
+		return 0;
+
+	/* If algo exists, it means that the i2c_adapter's initialized */
+	if (!adev->pm.fru_eeprom_i2c_bus || !adev->pm.fru_eeprom_i2c_bus->algo) {
+		DRM_WARN("Cannot access FRU, EEPROM accessor not initialized");
+		return -ENODEV;
+	}
+
+	/* There's a lot of repetition here. This is due to the FRU having
+	 * variable-length fields. To get the information, we have to find the
+	 * size of each field, and then keep reading along and reading along
+	 * until we get all of the data that we want. We use addrptr to track
+	 * the address as we go
+	 */
+
+	/* The first fields are all of size 1-byte, from 0-7 are offsets that
+	 * contain information that isn't useful to us.
+	 * Bytes 8-a are all 1-byte and refer to the size of the entire struct,
+	 * and the language field, so just start from 0xb, manufacturer size
+	 */
+	addrptr = FRU_EEPROM_MADDR + 0xb;
+	size = amdgpu_fru_read_eeprom(adev, addrptr, buf, sizeof(buf));
+	if (size < 1) {
+		DRM_ERROR("Failed to read FRU Manufacturer, ret:%d", size);
+		return -EINVAL;
+	}
+
+	/* Increment the addrptr by the size of the field, and 1 due to the
+	 * size field being 1 byte. This pattern continues below.
+	 */
+	addrptr += size + 1;
+	size = amdgpu_fru_read_eeprom(adev, addrptr, buf, sizeof(buf));
+	if (size < 1) {
+		DRM_ERROR("Failed to read FRU product name, ret:%d", size);
+		return -EINVAL;
+	}
+
+	len = size;
+	if (len >= AMDGPU_PRODUCT_NAME_LEN) {
+		DRM_WARN("FRU Product Name is larger than %d characters. This is likely a mistake",
+				AMDGPU_PRODUCT_NAME_LEN);
+		len = AMDGPU_PRODUCT_NAME_LEN - 1;
+	}
+	memcpy(adev->product_name, buf, len);
+	adev->product_name[len] = '\0';
+
+	addrptr += size + 1;
+	size = amdgpu_fru_read_eeprom(adev, addrptr, buf, sizeof(buf));
+	if (size < 1) {
+		DRM_ERROR("Failed to read FRU product number, ret:%d", size);
+		return -EINVAL;
+	}
+
+	len = size;
+	/* Product number should only be 16 characters. Any more,
+	 * and something could be wrong. Cap it at 16 to be safe
+	 */
+	if (len >= sizeof(adev->product_number)) {
+		DRM_WARN("FRU Product Number is larger than 16 characters. This is likely a mistake");
+		len = sizeof(adev->product_number) - 1;
+	}
+	memcpy(adev->product_number, buf, len);
+	adev->product_number[len] = '\0';
+
+	addrptr += size + 1;
+	size = amdgpu_fru_read_eeprom(adev, addrptr, buf, sizeof(buf));
+
+	if (size < 1) {
+		DRM_ERROR("Failed to read FRU product version, ret:%d", size);
+		return -EINVAL;
+	}
+
+	addrptr += size + 1;
+	size = amdgpu_fru_read_eeprom(adev, addrptr, buf, sizeof(buf));
+
+	if (size < 1) {
+		DRM_ERROR("Failed to read FRU serial number, ret:%d", size);
+		return -EINVAL;
+	}
+
+	len = size;
+	/* Serial number should only be 16 characters. Any more,
+	 * and something could be wrong. Cap it at 16 to be safe
+	 */
+	if (len >= sizeof(adev->serial)) {
+		DRM_WARN("FRU Serial Number is larger than 16 characters. This is likely a mistake");
+		len = sizeof(adev->serial) - 1;
+	}
+	memcpy(adev->serial, buf, len);
+	adev->serial[len] = '\0';
+
+	return 0;
+}