[linux-2.6-block.git] / drivers / gpu / drm / amd / amdgpu / amdgpu_fru_eeprom.c

/*
 * 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_6      0x60000
#define FRU_EEPROM_MADDR_8      0x80000

static bool is_fru_eeprom_supported(struct amdgpu_device *adev, u32 *fru_addr)
{
	/* 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
	 * Also, FRU not valid for APU devices.
	 */
	if (amdgpu_sriov_vf(adev) || (adev->flags & AMD_IS_APU))
		return false;

	/* The default I2C EEPROM address of the FRU.
	 */
	if (fru_addr)
		*fru_addr = FRU_EEPROM_MADDR_8;

	/* 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 (amdgpu_ip_version(adev, MP1_HWIP, 0)) {
	case IP_VERSION(11, 0, 2):
		switch (adev->asic_type) {
		case CHIP_VEGA20:
			/* D161 and D163 are the VG20 server SKUs */
			if (strnstr(atom_ctx->vbios_pn, "D161",
				    sizeof(atom_ctx->vbios_pn)) ||
			    strnstr(atom_ctx->vbios_pn, "D163",
				    sizeof(atom_ctx->vbios_pn))) {
				if (fru_addr)
					*fru_addr = FRU_EEPROM_MADDR_6;
				return true;
			} else {
				return false;
			}
		case CHIP_ARCTURUS:
		default:
			return false;
		}
	case IP_VERSION(11, 0, 7):
		if (strnstr(atom_ctx->vbios_pn, "D603",
			    sizeof(atom_ctx->vbios_pn))) {
			if (strnstr(atom_ctx->vbios_pn, "D603GLXE",
				    sizeof(atom_ctx->vbios_pn))) {
				return false;
			}

			if (fru_addr)
				*fru_addr = FRU_EEPROM_MADDR_6;
			return true;

		} else {
			return false;
		}
	case IP_VERSION(13, 0, 2):
		/* All Aldebaran SKUs have an FRU */
		if (!strnstr(atom_ctx->vbios_pn, "D673",
			     sizeof(atom_ctx->vbios_pn)))
			if (fru_addr)
				*fru_addr = FRU_EEPROM_MADDR_6;
		return true;
	case IP_VERSION(13, 0, 6):
			if (fru_addr)
				*fru_addr = FRU_EEPROM_MADDR_8;
			return true;
	default:
		return false;
	}
}

int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
{
	struct amdgpu_fru_info *fru_info;
	unsigned char buf[8], *pia;
	u32 addr, fru_addr;
	int size, len;
	u8 csum;

	if (!is_fru_eeprom_supported(adev, &fru_addr))
		return 0;

	if (!adev->fru_info) {
		adev->fru_info = kzalloc(sizeof(*adev->fru_info), GFP_KERNEL);
		if (!adev->fru_info)
			return -ENOMEM;
	}

	fru_info = adev->fru_info;
	/* For Arcturus-and-later, default value of serial_number is unique_id
	 * so convert it to a 16-digit HEX string for convenience and
	 * backwards-compatibility.
	 */
	sprintf(fru_info->serial, "%llx", adev->unique_id);

	/* 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;
	}

	/* Read the IPMI Common header */
	len = amdgpu_eeprom_read(adev->pm.fru_eeprom_i2c_bus, fru_addr, buf,
				 sizeof(buf));
	if (len != 8) {
		DRM_ERROR("Couldn't read the IPMI Common Header: %d", len);
		return len < 0 ? len : -EIO;
	}

	if (buf[0] != 1) {
		DRM_ERROR("Bad IPMI Common Header version: 0x%02x", buf[0]);
		return -EIO;
	}

	for (csum = 0; len > 0; len--)
		csum += buf[len - 1];
	if (csum) {
		DRM_ERROR("Bad IPMI Common Header checksum: 0x%02x", csum);
		return -EIO;
	}

	/* Get the offset to the Product Info Area (PIA). */
	addr = buf[4] * 8;
	if (!addr)
		return 0;

	/* Get the absolute address to the PIA. */
	addr += fru_addr;

	/* Read the header of the PIA. */
	len = amdgpu_eeprom_read(adev->pm.fru_eeprom_i2c_bus, addr, buf, 3);
	if (len != 3) {
		DRM_ERROR("Couldn't read the Product Info Area header: %d", len);
		return len < 0 ? len : -EIO;
	}

	if (buf[0] != 1) {
		DRM_ERROR("Bad IPMI Product Info Area version: 0x%02x", buf[0]);
		return -EIO;
	}

	size = buf[1] * 8;
	pia = kzalloc(size, GFP_KERNEL);
	if (!pia)
		return -ENOMEM;

	/* Read the whole PIA. */
	len = amdgpu_eeprom_read(adev->pm.fru_eeprom_i2c_bus, addr, pia, size);
	if (len != size) {
		kfree(pia);
		DRM_ERROR("Couldn't read the Product Info Area: %d", len);
		return len < 0 ? len : -EIO;
	}

	for (csum = 0; size > 0; size--)
		csum += pia[size - 1];
	if (csum) {
		DRM_ERROR("Bad Product Info Area checksum: 0x%02x", csum);
		kfree(pia);
		return -EIO;
	}

	/* Now extract useful information from the PIA.
	 *
	 * Read Manufacturer Name field whose length is [3].
	 */
	addr = 3;
	if (addr + 1 >= len)
		goto Out;
	memcpy(fru_info->manufacturer_name, pia + addr + 1,
	       min_t(size_t, sizeof(fru_info->manufacturer_name),
		     pia[addr] & 0x3F));
	fru_info->manufacturer_name[sizeof(fru_info->manufacturer_name) - 1] =
		'\0';

	/* Read Product Name field. */
	addr += 1 + (pia[addr] & 0x3F);
	if (addr + 1 >= len)
		goto Out;
	memcpy(fru_info->product_name, pia + addr + 1,
	       min_t(size_t, sizeof(fru_info->product_name), pia[addr] & 0x3F));
	fru_info->product_name[sizeof(fru_info->product_name) - 1] = '\0';

	/* Go to the Product Part/Model Number field. */
	addr += 1 + (pia[addr] & 0x3F);
	if (addr + 1 >= len)
		goto Out;
	memcpy(fru_info->product_number, pia + addr + 1,
	       min_t(size_t, sizeof(fru_info->product_number),
		     pia[addr] & 0x3F));
	fru_info->product_number[sizeof(fru_info->product_number) - 1] = '\0';

	/* Go to the Product Version field. */
	addr += 1 + (pia[addr] & 0x3F);

	/* Go to the Product Serial Number field. */
	addr += 1 + (pia[addr] & 0x3F);
	if (addr + 1 >= len)
		goto Out;
	memcpy(fru_info->serial, pia + addr + 1,
	       min_t(size_t, sizeof(fru_info->serial), pia[addr] & 0x3F));
	fru_info->serial[sizeof(fru_info->serial) - 1] = '\0';

	/* Asset Tag field */
	addr += 1 + (pia[addr] & 0x3F);

	/* FRU File Id field. This could be 'null'. */
	addr += 1 + (pia[addr] & 0x3F);
	if ((addr + 1 >= len) || !(pia[addr] & 0x3F))
		goto Out;
	memcpy(fru_info->fru_id, pia + addr + 1,
	       min_t(size_t, sizeof(fru_info->fru_id), pia[addr] & 0x3F));
	fru_info->fru_id[sizeof(fru_info->fru_id) - 1] = '\0';

Out:
	kfree(pia);
	return 0;
}

/**
 * DOC: product_name
 *
 * The amdgpu driver provides a sysfs API for reporting the product name
 * for the device
 * The file product_name is used for this and returns the product name
 * as returned from the FRU.
 * NOTE: This is only available for certain server cards
 */

static ssize_t amdgpu_fru_product_name_show(struct device *dev,
					    struct device_attribute *attr,
					    char *buf)
{
	struct drm_device *ddev = dev_get_drvdata(dev);
	struct amdgpu_device *adev = drm_to_adev(ddev);

	return sysfs_emit(buf, "%s\n", adev->fru_info->product_name);
}

static DEVICE_ATTR(product_name, 0444, amdgpu_fru_product_name_show, NULL);

/**
 * DOC: product_number
 *
 * The amdgpu driver provides a sysfs API for reporting the part number
 * for the device
 * The file product_number is used for this and returns the part number
 * as returned from the FRU.
 * NOTE: This is only available for certain server cards
 */

static ssize_t amdgpu_fru_product_number_show(struct device *dev,
					      struct device_attribute *attr,
					      char *buf)
{
	struct drm_device *ddev = dev_get_drvdata(dev);
	struct amdgpu_device *adev = drm_to_adev(ddev);

	return sysfs_emit(buf, "%s\n", adev->fru_info->product_number);
}

static DEVICE_ATTR(product_number, 0444, amdgpu_fru_product_number_show, NULL);

/**
 * DOC: serial_number
 *
 * The amdgpu driver provides a sysfs API for reporting the serial number
 * for the device
 * The file serial_number is used for this and returns the serial number
 * as returned from the FRU.
 * NOTE: This is only available for certain server cards
 */

static ssize_t amdgpu_fru_serial_number_show(struct device *dev,
					     struct device_attribute *attr,
					     char *buf)
{
	struct drm_device *ddev = dev_get_drvdata(dev);
	struct amdgpu_device *adev = drm_to_adev(ddev);

	return sysfs_emit(buf, "%s\n", adev->fru_info->serial);
}

static DEVICE_ATTR(serial_number, 0444, amdgpu_fru_serial_number_show, NULL);

/**
 * DOC: fru_id
 *
 * The amdgpu driver provides a sysfs API for reporting FRU File Id
 * for the device.
 * The file fru_id is used for this and returns the File Id value
 * as returned from the FRU.
 * NOTE: This is only available for certain server cards
 */

static ssize_t amdgpu_fru_id_show(struct device *dev,
				  struct device_attribute *attr, char *buf)
{
	struct drm_device *ddev = dev_get_drvdata(dev);
	struct amdgpu_device *adev = drm_to_adev(ddev);

	return sysfs_emit(buf, "%s\n", adev->fru_info->fru_id);
}

static DEVICE_ATTR(fru_id, 0444, amdgpu_fru_id_show, NULL);

/**
 * DOC: manufacturer
 *
 * The amdgpu driver provides a sysfs API for reporting manufacturer name from
 * FRU information.
 * The file manufacturer returns the value as returned from the FRU.
 * NOTE: This is only available for certain server cards
 */

static ssize_t amdgpu_fru_manufacturer_name_show(struct device *dev,
						 struct device_attribute *attr,
						 char *buf)
{
	struct drm_device *ddev = dev_get_drvdata(dev);
	struct amdgpu_device *adev = drm_to_adev(ddev);

	return sysfs_emit(buf, "%s\n", adev->fru_info->manufacturer_name);
}

static DEVICE_ATTR(manufacturer, 0444, amdgpu_fru_manufacturer_name_show, NULL);

static const struct attribute *amdgpu_fru_attributes[] = {
	&dev_attr_product_name.attr,
	&dev_attr_product_number.attr,
	&dev_attr_serial_number.attr,
	&dev_attr_fru_id.attr,
	&dev_attr_manufacturer.attr,
	NULL
};

int amdgpu_fru_sysfs_init(struct amdgpu_device *adev)
{
	if (!is_fru_eeprom_supported(adev, NULL) || !adev->fru_info)
		return 0;

	return sysfs_create_files(&adev->dev->kobj, amdgpu_fru_attributes);
}

void amdgpu_fru_sysfs_fini(struct amdgpu_device *adev)
{
	if (!is_fru_eeprom_supported(adev, NULL) || !adev->fru_info)
		return;

	sysfs_remove_files(&adev->dev->kobj, amdgpu_fru_attributes);
}
Commit	Line	Data
bd607166 KR	1	/*
	2	* Copyright 2019 Advanced Micro Devices, Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	*/
1ea2b260 KR	23	#include <linux/pci.h>
1ea2b260 KR	24
bd607166 KR	25	#include "amdgpu.h"
	26	#include "amdgpu_i2c.h"
	27	#include "smu_v11_0_i2c.h"
	28	#include "atom.h"
d43f7ff6	29	#include "amdgpu_fru_eeprom.h"
25e5c09f	30	#include "amdgpu_eeprom.h"
bd607166	31
afbe5d1e LT	32	#define FRU_EEPROM_MADDR_6 0x60000
afbe5d1e LT	33	#define FRU_EEPROM_MADDR_8 0x80000
bd607166	34
afbe5d1e	35	static bool is_fru_eeprom_supported(struct amdgpu_device adev, u32 fru_addr)
fabe01d7	36	{
f94582e4 KR	37	/* Only server cards have the FRU EEPROM
	38	* TODO: See if we can figure this out dynamically instead of
	39	* having to parse VBIOS versions.
1ea2b260	40	*/
f94582e4 KR	41	struct atom_context *atom_ctx = adev->mode_info.atom_context;
f94582e4 KR	42
901abf36	43	/* The i2c access is blocked on VF
901abf36	44	* TODO: Need other way to get the info
a8558fce	45	* Also, FRU not valid for APU devices.
901abf36	46	*/
a8558fce	47	if (amdgpu_sriov_vf(adev) \|\| (adev->flags & AMD_IS_APU))
901abf36	48	return false;
901abf36	49
afbe5d1e LT	50	/* The default I2C EEPROM address of the FRU.
	51	*/
	52	if (fru_addr)
	53	*fru_addr = FRU_EEPROM_MADDR_8;
	54
3ed89339	55	/* VBIOS is of the format ###-DXXXYYYY-##. For SKU identification,
f94582e4 KR	56	* we can use just the "DXXX" portion. If there were more models, we
	57	* could convert the 3 characters to a hex integer and use a switch
	58	* for ease/speed/readability. For now, 2 string comparisons are
	59	* reasonable and not too expensive
	60	*/
be2e8aca YW	61	switch (amdgpu_ip_version(adev, MP1_HWIP, 0)) {
	62	case IP_VERSION(11, 0, 2):
	63	switch (adev->asic_type) {
	64	case CHIP_VEGA20:
	65	/* D161 and D163 are the VG20 server SKUs */
	66	if (strnstr(atom_ctx->vbios_pn, "D161",
	67	sizeof(atom_ctx->vbios_pn)) \|\|
	68	strnstr(atom_ctx->vbios_pn, "D163",
	69	sizeof(atom_ctx->vbios_pn))) {
	70	if (fru_addr)
	71	*fru_addr = FRU_EEPROM_MADDR_6;
	72	return true;
	73	} else {
	74	return false;
	75	}
	76	case CHIP_ARCTURUS:
	77	default:
f94582e4	78	return false;
afbe5d1e	79	}
be2e8aca	80	case IP_VERSION(11, 0, 7):
adf64e21 ML	81	if (strnstr(atom_ctx->vbios_pn, "D603",
	82	sizeof(atom_ctx->vbios_pn))) {
	83	if (strnstr(atom_ctx->vbios_pn, "D603GLXE",
	84	sizeof(atom_ctx->vbios_pn))) {
c8fea927	85	return false;
afbe5d1e	86	}
ce83aa7b SS	87
	88	if (fru_addr)
	89	*fru_addr = FRU_EEPROM_MADDR_6;
	90	return true;
	91
c8fea927	92	} else {
3ed89339	93	return false;
c8fea927	94	}
be2e8aca YW	95	case IP_VERSION(13, 0, 2):
	96	/* All Aldebaran SKUs have an FRU */
	97	if (!strnstr(atom_ctx->vbios_pn, "D673",
	98	sizeof(atom_ctx->vbios_pn)))
	99	if (fru_addr)
	100	*fru_addr = FRU_EEPROM_MADDR_6;
	101	return true;
	102	case IP_VERSION(13, 0, 6):
	103	if (fru_addr)
	104	*fru_addr = FRU_EEPROM_MADDR_8;
	105	return true;
f94582e4 KR	106	default:
	107	return false;
	108	}
fabe01d7 JC	109	}
fabe01d7 JC	110
bd607166 KR	111	int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
bd607166 KR	112	{
8a2b5139	113	struct amdgpu_fru_info *fru_info;
0dbf2c56 LT	114	unsigned char buf[8], *pia;
0dbf2c56 LT	115	u32 addr, fru_addr;
ccdfbfec	116	int size, len;
0dbf2c56	117	u8 csum;
bd607166	118
afbe5d1e	119	if (!is_fru_eeprom_supported(adev, &fru_addr))
fabe01d7 JC	120	return 0;
fabe01d7 JC	121
8a2b5139 LL	122	if (!adev->fru_info) {
	123	adev->fru_info = kzalloc(sizeof(*adev->fru_info), GFP_KERNEL);
	124	if (!adev->fru_info)
	125	return -ENOMEM;
	126	}
	127
	128	fru_info = adev->fru_info;
	129	/* For Arcturus-and-later, default value of serial_number is unique_id
	130	* so convert it to a 16-digit HEX string for convenience and
	131	* backwards-compatibility.
	132	*/
	133	sprintf(fru_info->serial, "%llx", adev->unique_id);
	134
bd607166	135	/* If algo exists, it means that the i2c_adapter's initialized */
2f60dd50	136	if (!adev->pm.fru_eeprom_i2c_bus \|\| !adev->pm.fru_eeprom_i2c_bus->algo) {
bd607166	137	DRM_WARN("Cannot access FRU, EEPROM accessor not initialized");
02b865f8	138	return -ENODEV;
bd607166 KR	139	}
bd607166 KR	140
0dbf2c56 LT	141	/* Read the IPMI Common header */
	142	len = amdgpu_eeprom_read(adev->pm.fru_eeprom_i2c_bus, fru_addr, buf,
	143	sizeof(buf));
	144	if (len != 8) {
	145	DRM_ERROR("Couldn't read the IPMI Common Header: %d", len);
	146	return len < 0 ? len : -EIO;
bd607166 KR	147	}
bd607166 KR	148
0dbf2c56 LT	149	if (buf[0] != 1) {
	150	DRM_ERROR("Bad IPMI Common Header version: 0x%02x", buf[0]);
	151	return -EIO;
bd607166 KR	152	}
bd607166 KR	153
0dbf2c56 LT	154	for (csum = 0; len > 0; len--)
	155	csum += buf[len - 1];
	156	if (csum) {
	157	DRM_ERROR("Bad IPMI Common Header checksum: 0x%02x", csum);
	158	return -EIO;
bd607166 KR	159	}
bd607166 KR	160
0dbf2c56 LT	161	/* Get the offset to the Product Info Area (PIA). */
	162	addr = buf[4] * 8;
	163	if (!addr)
	164	return 0;
bd607166	165
0dbf2c56 LT	166	/* Get the absolute address to the PIA. */
0dbf2c56 LT	167	addr += fru_addr;
bd607166	168
0dbf2c56 LT	169	/* Read the header of the PIA. */
	170	len = amdgpu_eeprom_read(adev->pm.fru_eeprom_i2c_bus, addr, buf, 3);
	171	if (len != 3) {
	172	DRM_ERROR("Couldn't read the Product Info Area header: %d", len);
	173	return len < 0 ? len : -EIO;
bd607166 KR	174	}
bd607166 KR	175
0dbf2c56 LT	176	if (buf[0] != 1) {
	177	DRM_ERROR("Bad IPMI Product Info Area version: 0x%02x", buf[0]);
	178	return -EIO;
	179	}
bd607166	180
0dbf2c56 LT	181	size = buf[1] * 8;
	182	pia = kzalloc(size, GFP_KERNEL);
	183	if (!pia)
	184	return -ENOMEM;
	185
	186	/* Read the whole PIA. */
	187	len = amdgpu_eeprom_read(adev->pm.fru_eeprom_i2c_bus, addr, pia, size);
	188	if (len != size) {
	189	kfree(pia);
	190	DRM_ERROR("Couldn't read the Product Info Area: %d", len);
	191	return len < 0 ? len : -EIO;
bd607166 KR	192	}
bd607166 KR	193
0dbf2c56 LT	194	for (csum = 0; size > 0; size--)
	195	csum += pia[size - 1];
	196	if (csum) {
	197	DRM_ERROR("Bad Product Info Area checksum: 0x%02x", csum);
9ed630c5	198	kfree(pia);
0dbf2c56	199	return -EIO;
714309f0	200	}
bd607166	201
0dbf2c56 LT	202	/* Now extract useful information from the PIA.
0dbf2c56 LT	203	*
ac6b1f27	204	* Read Manufacturer Name field whose length is [3].
0dbf2c56	205	*/
ac6b1f27 LL	206	addr = 3;
	207	if (addr + 1 >= len)
	208	goto Out;
	209	memcpy(fru_info->manufacturer_name, pia + addr + 1,
	210	min_t(size_t, sizeof(fru_info->manufacturer_name),
	211	pia[addr] & 0x3F));
	212	fru_info->manufacturer_name[sizeof(fru_info->manufacturer_name) - 1] =
	213	'\0';
	214
	215	/* Read Product Name field. */
	216	addr += 1 + (pia[addr] & 0x3F);
0dbf2c56 LT	217	if (addr + 1 >= len)
0dbf2c56 LT	218	goto Out;
8a2b5139 LL	219	memcpy(fru_info->product_name, pia + addr + 1,
	220	min_t(size_t, sizeof(fru_info->product_name), pia[addr] & 0x3F));
	221	fru_info->product_name[sizeof(fru_info->product_name) - 1] = '\0';
0dbf2c56 LT	222
	223	/* Go to the Product Part/Model Number field. */
	224	addr += 1 + (pia[addr] & 0x3F);
	225	if (addr + 1 >= len)
	226	goto Out;
8a2b5139 LL	227	memcpy(fru_info->product_number, pia + addr + 1,
8a2b5139 LL	228	min_t(size_t, sizeof(fru_info->product_number),
0dbf2c56	229	pia[addr] & 0x3F));
8a2b5139	230	fru_info->product_number[sizeof(fru_info->product_number) - 1] = '\0';
0dbf2c56 LT	231
	232	/* Go to the Product Version field. */
	233	addr += 1 + (pia[addr] & 0x3F);
	234
	235	/* Go to the Product Serial Number field. */
	236	addr += 1 + (pia[addr] & 0x3F);
	237	if (addr + 1 >= len)
	238	goto Out;
8a2b5139 LL	239	memcpy(fru_info->serial, pia + addr + 1,
	240	min_t(size_t, sizeof(fru_info->serial), pia[addr] & 0x3F));
	241	fru_info->serial[sizeof(fru_info->serial) - 1] = '\0';
ac6b1f27 LL	242
	243	/* Asset Tag field */
	244	addr += 1 + (pia[addr] & 0x3F);
	245
	246	/* FRU File Id field. This could be 'null'. */
	247	addr += 1 + (pia[addr] & 0x3F);
	248	if ((addr + 1 >= len) \|\| !(pia[addr] & 0x3F))
	249	goto Out;
	250	memcpy(fru_info->fru_id, pia + addr + 1,
	251	min_t(size_t, sizeof(fru_info->fru_id), pia[addr] & 0x3F));
	252	fru_info->fru_id[sizeof(fru_info->fru_id) - 1] = '\0';
	253
0dbf2c56 LT	254	Out:
0dbf2c56 LT	255	kfree(pia);
bd607166 KR	256	return 0;
bd607166 KR	257	}
7957ec80 LL	258
	259	/**
	260	* DOC: product_name
	261	*
	262	* The amdgpu driver provides a sysfs API for reporting the product name
	263	* for the device
	264	* The file product_name is used for this and returns the product name
	265	* as returned from the FRU.
	266	* NOTE: This is only available for certain server cards
	267	*/
	268
	269	static ssize_t amdgpu_fru_product_name_show(struct device *dev,
	270	struct device_attribute *attr,
	271	char *buf)
	272	{
	273	struct drm_device *ddev = dev_get_drvdata(dev);
	274	struct amdgpu_device *adev = drm_to_adev(ddev);
	275
8a2b5139	276	return sysfs_emit(buf, "%s\n", adev->fru_info->product_name);
7957ec80 LL	277	}
	278
	279	static DEVICE_ATTR(product_name, 0444, amdgpu_fru_product_name_show, NULL);
	280
	281	/**
	282	* DOC: product_number
	283	*
	284	* The amdgpu driver provides a sysfs API for reporting the part number
	285	* for the device
	286	* The file product_number is used for this and returns the part number
	287	* as returned from the FRU.
	288	* NOTE: This is only available for certain server cards
	289	*/
	290
	291	static ssize_t amdgpu_fru_product_number_show(struct device *dev,
	292	struct device_attribute *attr,
	293	char *buf)
	294	{
	295	struct drm_device *ddev = dev_get_drvdata(dev);
	296	struct amdgpu_device *adev = drm_to_adev(ddev);
	297
8a2b5139	298	return sysfs_emit(buf, "%s\n", adev->fru_info->product_number);
7957ec80 LL	299	}
	300
	301	static DEVICE_ATTR(product_number, 0444, amdgpu_fru_product_number_show, NULL);
	302
	303	/**
	304	* DOC: serial_number
	305	*
	306	* The amdgpu driver provides a sysfs API for reporting the serial number
	307	* for the device
	308	* The file serial_number is used for this and returns the serial number
	309	* as returned from the FRU.
	310	* NOTE: This is only available for certain server cards
	311	*/
	312
	313	static ssize_t amdgpu_fru_serial_number_show(struct device *dev,
	314	struct device_attribute *attr,
	315	char *buf)
	316	{
	317	struct drm_device *ddev = dev_get_drvdata(dev);
	318	struct amdgpu_device *adev = drm_to_adev(ddev);
	319
8a2b5139	320	return sysfs_emit(buf, "%s\n", adev->fru_info->serial);
7957ec80 LL	321	}
	322
	323	static DEVICE_ATTR(serial_number, 0444, amdgpu_fru_serial_number_show, NULL);
	324
b3e73b5a LL	325	/**
	326	* DOC: fru_id
	327	*
	328	* The amdgpu driver provides a sysfs API for reporting FRU File Id
	329	* for the device.
	330	* The file fru_id is used for this and returns the File Id value
	331	* as returned from the FRU.
	332	* NOTE: This is only available for certain server cards
	333	*/
	334
ac6b1f27 LL	335	static ssize_t amdgpu_fru_id_show(struct device *dev,
	336	struct device_attribute attr, char buf)
	337	{
	338	struct drm_device *ddev = dev_get_drvdata(dev);
	339	struct amdgpu_device *adev = drm_to_adev(ddev);
	340
	341	return sysfs_emit(buf, "%s\n", adev->fru_info->fru_id);
	342	}
	343
	344	static DEVICE_ATTR(fru_id, 0444, amdgpu_fru_id_show, NULL);
	345
b3e73b5a LL	346	/**
	347	* DOC: manufacturer
	348	*
	349	* The amdgpu driver provides a sysfs API for reporting manufacturer name from
	350	* FRU information.
	351	* The file manufacturer returns the value as returned from the FRU.
	352	* NOTE: This is only available for certain server cards
	353	*/
	354
ac6b1f27 LL	355	static ssize_t amdgpu_fru_manufacturer_name_show(struct device *dev,
	356	struct device_attribute *attr,
	357	char *buf)
	358	{
	359	struct drm_device *ddev = dev_get_drvdata(dev);
	360	struct amdgpu_device *adev = drm_to_adev(ddev);
	361
	362	return sysfs_emit(buf, "%s\n", adev->fru_info->manufacturer_name);
	363	}
	364
	365	static DEVICE_ATTR(manufacturer, 0444, amdgpu_fru_manufacturer_name_show, NULL);
	366
7957ec80 LL	367	static const struct attribute *amdgpu_fru_attributes[] = {
	368	&dev_attr_product_name.attr,
	369	&dev_attr_product_number.attr,
	370	&dev_attr_serial_number.attr,
ac6b1f27 LL	371	&dev_attr_fru_id.attr,
ac6b1f27 LL	372	&dev_attr_manufacturer.attr,
7957ec80 LL	373	NULL
	374	};
	375
	376	int amdgpu_fru_sysfs_init(struct amdgpu_device *adev)
	377	{
8a2b5139	378	if (!is_fru_eeprom_supported(adev, NULL) \|\| !adev->fru_info)
7957ec80 LL	379	return 0;
	380
	381	return sysfs_create_files(&adev->dev->kobj, amdgpu_fru_attributes);
	382	}
	383
	384	void amdgpu_fru_sysfs_fini(struct amdgpu_device *adev)
	385	{
8a2b5139	386	if (!is_fru_eeprom_supported(adev, NULL) \|\| !adev->fru_info)
7957ec80 LL	387	return;
	388
	389	sysfs_remove_files(&adev->dev->kobj, amdgpu_fru_attributes);
	390	}