diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c | 807 |
1 files changed, 807 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c new file mode 100644 index 000000000..def0b7092 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c @@ -0,0 +1,807 @@ +/* + * Copyright 2018 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/list.h> +#include "amdgpu.h" +#include "amdgpu_xgmi.h" +#include "amdgpu_smu.h" +#include "amdgpu_ras.h" +#include "soc15.h" +#include "df/df_3_6_offset.h" +#include "xgmi/xgmi_4_0_0_smn.h" +#include "xgmi/xgmi_4_0_0_sh_mask.h" +#include "wafl/wafl2_4_0_0_smn.h" +#include "wafl/wafl2_4_0_0_sh_mask.h" + +static DEFINE_MUTEX(xgmi_mutex); + +#define AMDGPU_MAX_XGMI_DEVICE_PER_HIVE 4 + +static LIST_HEAD(xgmi_hive_list); + +static const int xgmi_pcs_err_status_reg_vg20[] = { + smnXGMI0_PCS_GOPX16_PCS_ERROR_STATUS, + smnXGMI0_PCS_GOPX16_PCS_ERROR_STATUS + 0x100000, +}; + +static const int wafl_pcs_err_status_reg_vg20[] = { + smnPCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, + smnPCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS + 0x100000, +}; + +static const int xgmi_pcs_err_status_reg_arct[] = { + smnXGMI0_PCS_GOPX16_PCS_ERROR_STATUS, + smnXGMI0_PCS_GOPX16_PCS_ERROR_STATUS + 0x100000, + smnXGMI0_PCS_GOPX16_PCS_ERROR_STATUS + 0x500000, + smnXGMI0_PCS_GOPX16_PCS_ERROR_STATUS + 0x600000, + smnXGMI0_PCS_GOPX16_PCS_ERROR_STATUS + 0x700000, + smnXGMI0_PCS_GOPX16_PCS_ERROR_STATUS + 0x800000, +}; + +/* same as vg20*/ +static const int wafl_pcs_err_status_reg_arct[] = { + smnPCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, + smnPCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS + 0x100000, +}; + +static const struct amdgpu_pcs_ras_field xgmi_pcs_ras_fields[] = { + {"XGMI PCS DataLossErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, DataLossErr)}, + {"XGMI PCS TrainingErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, TrainingErr)}, + {"XGMI PCS CRCErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, CRCErr)}, + {"XGMI PCS BERExceededErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, BERExceededErr)}, + {"XGMI PCS TxMetaDataErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, TxMetaDataErr)}, + {"XGMI PCS ReplayBufParityErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, ReplayBufParityErr)}, + {"XGMI PCS DataParityErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, DataParityErr)}, + {"XGMI PCS ReplayFifoOverflowErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, ReplayFifoOverflowErr)}, + {"XGMI PCS ReplayFifoUnderflowErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, ReplayFifoUnderflowErr)}, + {"XGMI PCS ElasticFifoOverflowErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, ElasticFifoOverflowErr)}, + {"XGMI PCS DeskewErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, DeskewErr)}, + {"XGMI PCS DataStartupLimitErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, DataStartupLimitErr)}, + {"XGMI PCS FCInitTimeoutErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, FCInitTimeoutErr)}, + {"XGMI PCS RecoveryTimeoutErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, RecoveryTimeoutErr)}, + {"XGMI PCS ReadySerialTimeoutErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, ReadySerialTimeoutErr)}, + {"XGMI PCS ReadySerialAttemptErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, ReadySerialAttemptErr)}, + {"XGMI PCS RecoveryAttemptErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, RecoveryAttemptErr)}, + {"XGMI PCS RecoveryRelockAttemptErr", + SOC15_REG_FIELD(XGMI0_PCS_GOPX16_PCS_ERROR_STATUS, RecoveryRelockAttemptErr)}, +}; + +static const struct amdgpu_pcs_ras_field wafl_pcs_ras_fields[] = { + {"WAFL PCS DataLossErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, DataLossErr)}, + {"WAFL PCS TrainingErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, TrainingErr)}, + {"WAFL PCS CRCErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, CRCErr)}, + {"WAFL PCS BERExceededErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, BERExceededErr)}, + {"WAFL PCS TxMetaDataErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, TxMetaDataErr)}, + {"WAFL PCS ReplayBufParityErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, ReplayBufParityErr)}, + {"WAFL PCS DataParityErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, DataParityErr)}, + {"WAFL PCS ReplayFifoOverflowErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, ReplayFifoOverflowErr)}, + {"WAFL PCS ReplayFifoUnderflowErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, ReplayFifoUnderflowErr)}, + {"WAFL PCS ElasticFifoOverflowErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, ElasticFifoOverflowErr)}, + {"WAFL PCS DeskewErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, DeskewErr)}, + {"WAFL PCS DataStartupLimitErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, DataStartupLimitErr)}, + {"WAFL PCS FCInitTimeoutErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, FCInitTimeoutErr)}, + {"WAFL PCS RecoveryTimeoutErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, RecoveryTimeoutErr)}, + {"WAFL PCS ReadySerialTimeoutErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, ReadySerialTimeoutErr)}, + {"WAFL PCS ReadySerialAttemptErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, ReadySerialAttemptErr)}, + {"WAFL PCS RecoveryAttemptErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, RecoveryAttemptErr)}, + {"WAFL PCS RecoveryRelockAttemptErr", + SOC15_REG_FIELD(PCS_GOPX1_0_PCS_GOPX1_PCS_ERROR_STATUS, RecoveryRelockAttemptErr)}, +}; + +/** + * DOC: AMDGPU XGMI Support + * + * XGMI is a high speed interconnect that joins multiple GPU cards + * into a homogeneous memory space that is organized by a collective + * hive ID and individual node IDs, both of which are 64-bit numbers. + * + * The file xgmi_device_id contains the unique per GPU device ID and + * is stored in the /sys/class/drm/card${cardno}/device/ directory. + * + * Inside the device directory a sub-directory 'xgmi_hive_info' is + * created which contains the hive ID and the list of nodes. + * + * The hive ID is stored in: + * /sys/class/drm/card${cardno}/device/xgmi_hive_info/xgmi_hive_id + * + * The node information is stored in numbered directories: + * /sys/class/drm/card${cardno}/device/xgmi_hive_info/node${nodeno}/xgmi_device_id + * + * Each device has their own xgmi_hive_info direction with a mirror + * set of node sub-directories. + * + * The XGMI memory space is built by contiguously adding the power of + * two padded VRAM space from each node to each other. + * + */ + +static struct attribute amdgpu_xgmi_hive_id = { + .name = "xgmi_hive_id", + .mode = S_IRUGO +}; + +static struct attribute *amdgpu_xgmi_hive_attrs[] = { + &amdgpu_xgmi_hive_id, + NULL +}; + +static ssize_t amdgpu_xgmi_show_attrs(struct kobject *kobj, + struct attribute *attr, char *buf) +{ + struct amdgpu_hive_info *hive = container_of( + kobj, struct amdgpu_hive_info, kobj); + + if (attr == &amdgpu_xgmi_hive_id) + return snprintf(buf, PAGE_SIZE, "%llu\n", hive->hive_id); + + return 0; +} + +static void amdgpu_xgmi_hive_release(struct kobject *kobj) +{ + struct amdgpu_hive_info *hive = container_of( + kobj, struct amdgpu_hive_info, kobj); + + mutex_destroy(&hive->hive_lock); + kfree(hive); +} + +static const struct sysfs_ops amdgpu_xgmi_hive_ops = { + .show = amdgpu_xgmi_show_attrs, +}; + +struct kobj_type amdgpu_xgmi_hive_type = { + .release = amdgpu_xgmi_hive_release, + .sysfs_ops = &amdgpu_xgmi_hive_ops, + .default_attrs = amdgpu_xgmi_hive_attrs, +}; + +static ssize_t amdgpu_xgmi_show_device_id(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 snprintf(buf, PAGE_SIZE, "%llu\n", adev->gmc.xgmi.node_id); + +} + +#define AMDGPU_XGMI_SET_FICAA(o) ((o) | 0x456801) +static ssize_t amdgpu_xgmi_show_error(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); + uint32_t ficaa_pie_ctl_in, ficaa_pie_status_in; + uint64_t fica_out; + unsigned int error_count = 0; + + ficaa_pie_ctl_in = AMDGPU_XGMI_SET_FICAA(0x200); + ficaa_pie_status_in = AMDGPU_XGMI_SET_FICAA(0x208); + + fica_out = adev->df.funcs->get_fica(adev, ficaa_pie_ctl_in); + if (fica_out != 0x1f) + pr_err("xGMI error counters not enabled!\n"); + + fica_out = adev->df.funcs->get_fica(adev, ficaa_pie_status_in); + + if ((fica_out & 0xffff) == 2) + error_count = ((fica_out >> 62) & 0x1) + (fica_out >> 63); + + adev->df.funcs->set_fica(adev, ficaa_pie_status_in, 0, 0); + + return snprintf(buf, PAGE_SIZE, "%d\n", error_count); +} + + +static DEVICE_ATTR(xgmi_device_id, S_IRUGO, amdgpu_xgmi_show_device_id, NULL); +static DEVICE_ATTR(xgmi_error, S_IRUGO, amdgpu_xgmi_show_error, NULL); + +static int amdgpu_xgmi_sysfs_add_dev_info(struct amdgpu_device *adev, + struct amdgpu_hive_info *hive) +{ + int ret = 0; + char node[10] = { 0 }; + + /* Create xgmi device id file */ + ret = device_create_file(adev->dev, &dev_attr_xgmi_device_id); + if (ret) { + dev_err(adev->dev, "XGMI: Failed to create device file xgmi_device_id\n"); + return ret; + } + + /* Create xgmi error file */ + ret = device_create_file(adev->dev, &dev_attr_xgmi_error); + if (ret) + pr_err("failed to create xgmi_error\n"); + + + /* Create sysfs link to hive info folder on the first device */ + if (hive->kobj.parent != (&adev->dev->kobj)) { + ret = sysfs_create_link(&adev->dev->kobj, &hive->kobj, + "xgmi_hive_info"); + if (ret) { + dev_err(adev->dev, "XGMI: Failed to create link to hive info"); + goto remove_file; + } + } + + sprintf(node, "node%d", atomic_read(&hive->number_devices)); + /* Create sysfs link form the hive folder to yourself */ + ret = sysfs_create_link(&hive->kobj, &adev->dev->kobj, node); + if (ret) { + dev_err(adev->dev, "XGMI: Failed to create link from hive info"); + goto remove_link; + } + + goto success; + + +remove_link: + sysfs_remove_link(&adev->dev->kobj, adev_to_drm(adev)->unique); + +remove_file: + device_remove_file(adev->dev, &dev_attr_xgmi_device_id); + +success: + return ret; +} + +static void amdgpu_xgmi_sysfs_rem_dev_info(struct amdgpu_device *adev, + struct amdgpu_hive_info *hive) +{ + char node[10]; + memset(node, 0, sizeof(node)); + + device_remove_file(adev->dev, &dev_attr_xgmi_device_id); + device_remove_file(adev->dev, &dev_attr_xgmi_error); + + if (hive->kobj.parent != (&adev->dev->kobj)) + sysfs_remove_link(&adev->dev->kobj,"xgmi_hive_info"); + + sprintf(node, "node%d", atomic_read(&hive->number_devices)); + sysfs_remove_link(&hive->kobj, node); + +} + + + +struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev) +{ + struct amdgpu_hive_info *hive = NULL, *tmp = NULL; + int ret; + + if (!adev->gmc.xgmi.hive_id) + return NULL; + + if (adev->hive) { + kobject_get(&adev->hive->kobj); + return adev->hive; + } + + mutex_lock(&xgmi_mutex); + + if (!list_empty(&xgmi_hive_list)) { + list_for_each_entry_safe(hive, tmp, &xgmi_hive_list, node) { + if (hive->hive_id == adev->gmc.xgmi.hive_id) + goto pro_end; + } + } + + hive = kzalloc(sizeof(*hive), GFP_KERNEL); + if (!hive) { + dev_err(adev->dev, "XGMI: allocation failed\n"); + hive = NULL; + goto pro_end; + } + + /* initialize new hive if not exist */ + ret = kobject_init_and_add(&hive->kobj, + &amdgpu_xgmi_hive_type, + &adev->dev->kobj, + "%s", "xgmi_hive_info"); + if (ret) { + dev_err(adev->dev, "XGMI: failed initializing kobject for xgmi hive\n"); + kobject_put(&hive->kobj); + kfree(hive); + hive = NULL; + goto pro_end; + } + + hive->hive_id = adev->gmc.xgmi.hive_id; + INIT_LIST_HEAD(&hive->device_list); + INIT_LIST_HEAD(&hive->node); + mutex_init(&hive->hive_lock); + atomic_set(&hive->in_reset, 0); + atomic_set(&hive->number_devices, 0); + task_barrier_init(&hive->tb); + hive->pstate = AMDGPU_XGMI_PSTATE_UNKNOWN; + hive->hi_req_gpu = NULL; + /* + * hive pstate on boot is high in vega20 so we have to go to low + * pstate on after boot. + */ + hive->hi_req_count = AMDGPU_MAX_XGMI_DEVICE_PER_HIVE; + list_add_tail(&hive->node, &xgmi_hive_list); + +pro_end: + if (hive) + kobject_get(&hive->kobj); + mutex_unlock(&xgmi_mutex); + return hive; +} + +void amdgpu_put_xgmi_hive(struct amdgpu_hive_info *hive) +{ + if (hive) + kobject_put(&hive->kobj); +} + +int amdgpu_xgmi_set_pstate(struct amdgpu_device *adev, int pstate) +{ + int ret = 0; + struct amdgpu_hive_info *hive = amdgpu_get_xgmi_hive(adev); + struct amdgpu_device *request_adev = hive->hi_req_gpu ? + hive->hi_req_gpu : adev; + bool is_hi_req = pstate == AMDGPU_XGMI_PSTATE_MAX_VEGA20; + bool init_low = hive->pstate == AMDGPU_XGMI_PSTATE_UNKNOWN; + + amdgpu_put_xgmi_hive(hive); + /* fw bug so temporarily disable pstate switching */ + return 0; + + if (!hive || adev->asic_type != CHIP_VEGA20) + return 0; + + mutex_lock(&hive->hive_lock); + + if (is_hi_req) + hive->hi_req_count++; + else + hive->hi_req_count--; + + /* + * Vega20 only needs single peer to request pstate high for the hive to + * go high but all peers must request pstate low for the hive to go low + */ + if (hive->pstate == pstate || + (!is_hi_req && hive->hi_req_count && !init_low)) + goto out; + + dev_dbg(request_adev->dev, "Set xgmi pstate %d.\n", pstate); + + ret = amdgpu_dpm_set_xgmi_pstate(request_adev, pstate); + if (ret) { + dev_err(request_adev->dev, + "XGMI: Set pstate failure on device %llx, hive %llx, ret %d", + request_adev->gmc.xgmi.node_id, + request_adev->gmc.xgmi.hive_id, ret); + goto out; + } + + if (init_low) + hive->pstate = hive->hi_req_count ? + hive->pstate : AMDGPU_XGMI_PSTATE_MIN; + else { + hive->pstate = pstate; + hive->hi_req_gpu = pstate != AMDGPU_XGMI_PSTATE_MIN ? + adev : NULL; + } +out: + mutex_unlock(&hive->hive_lock); + return ret; +} + +int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_device *adev) +{ + int ret; + + /* Each psp need to set the latest topology */ + ret = psp_xgmi_set_topology_info(&adev->psp, + atomic_read(&hive->number_devices), + &adev->psp.xgmi_context.top_info); + if (ret) + dev_err(adev->dev, + "XGMI: Set topology failure on device %llx, hive %llx, ret %d", + adev->gmc.xgmi.node_id, + adev->gmc.xgmi.hive_id, ret); + + return ret; +} + + +/* + * NOTE psp_xgmi_node_info.num_hops layout is as follows: + * num_hops[7:6] = link type (0 = xGMI2, 1 = xGMI3, 2/3 = reserved) + * num_hops[5:3] = reserved + * num_hops[2:0] = number of hops + */ +int amdgpu_xgmi_get_hops_count(struct amdgpu_device *adev, + struct amdgpu_device *peer_adev) +{ + struct psp_xgmi_topology_info *top = &adev->psp.xgmi_context.top_info; + uint8_t num_hops_mask = 0x7; + int i; + + for (i = 0 ; i < top->num_nodes; ++i) + if (top->nodes[i].node_id == peer_adev->gmc.xgmi.node_id) + return top->nodes[i].num_hops & num_hops_mask; + return -EINVAL; +} + +int amdgpu_xgmi_add_device(struct amdgpu_device *adev) +{ + struct psp_xgmi_topology_info *top_info; + struct amdgpu_hive_info *hive; + struct amdgpu_xgmi *entry; + struct amdgpu_device *tmp_adev = NULL; + + int count = 0, ret = 0; + + if (!adev->gmc.xgmi.supported) + return 0; + + if (amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_PSP)) { + ret = psp_xgmi_initialize(&adev->psp); + if (ret) { + dev_err(adev->dev, + "XGMI: Failed to initialize xgmi session\n"); + return ret; + } + + ret = psp_xgmi_get_hive_id(&adev->psp, &adev->gmc.xgmi.hive_id); + if (ret) { + dev_err(adev->dev, + "XGMI: Failed to get hive id\n"); + return ret; + } + + ret = psp_xgmi_get_node_id(&adev->psp, &adev->gmc.xgmi.node_id); + if (ret) { + dev_err(adev->dev, + "XGMI: Failed to get node id\n"); + return ret; + } + } else { + adev->gmc.xgmi.hive_id = 16; + adev->gmc.xgmi.node_id = adev->gmc.xgmi.physical_node_id + 16; + } + + hive = amdgpu_get_xgmi_hive(adev); + if (!hive) { + ret = -EINVAL; + dev_err(adev->dev, + "XGMI: node 0x%llx, can not match hive 0x%llx in the hive list.\n", + adev->gmc.xgmi.node_id, adev->gmc.xgmi.hive_id); + goto exit; + } + mutex_lock(&hive->hive_lock); + + top_info = &adev->psp.xgmi_context.top_info; + + list_add_tail(&adev->gmc.xgmi.head, &hive->device_list); + list_for_each_entry(entry, &hive->device_list, head) + top_info->nodes[count++].node_id = entry->node_id; + top_info->num_nodes = count; + atomic_set(&hive->number_devices, count); + + task_barrier_add_task(&hive->tb); + + if (amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_PSP)) { + list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head) { + /* update node list for other device in the hive */ + if (tmp_adev != adev) { + top_info = &tmp_adev->psp.xgmi_context.top_info; + top_info->nodes[count - 1].node_id = + adev->gmc.xgmi.node_id; + top_info->num_nodes = count; + } + ret = amdgpu_xgmi_update_topology(hive, tmp_adev); + if (ret) + goto exit_unlock; + } + + /* get latest topology info for each device from psp */ + list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head) { + ret = psp_xgmi_get_topology_info(&tmp_adev->psp, count, + &tmp_adev->psp.xgmi_context.top_info); + if (ret) { + dev_err(tmp_adev->dev, + "XGMI: Get topology failure on device %llx, hive %llx, ret %d", + tmp_adev->gmc.xgmi.node_id, + tmp_adev->gmc.xgmi.hive_id, ret); + /* To do : continue with some node failed or disable the whole hive */ + goto exit_unlock; + } + } + } + + if (!ret) + ret = amdgpu_xgmi_sysfs_add_dev_info(adev, hive); + +exit_unlock: + mutex_unlock(&hive->hive_lock); +exit: + if (!ret) { + adev->hive = hive; + dev_info(adev->dev, "XGMI: Add node %d, hive 0x%llx.\n", + adev->gmc.xgmi.physical_node_id, adev->gmc.xgmi.hive_id); + } else { + amdgpu_put_xgmi_hive(hive); + dev_err(adev->dev, "XGMI: Failed to add node %d, hive 0x%llx ret: %d\n", + adev->gmc.xgmi.physical_node_id, adev->gmc.xgmi.hive_id, + ret); + } + + return ret; +} + +int amdgpu_xgmi_remove_device(struct amdgpu_device *adev) +{ + struct amdgpu_hive_info *hive = adev->hive; + + if (!adev->gmc.xgmi.supported) + return -EINVAL; + + if (!hive) + return -EINVAL; + + mutex_lock(&hive->hive_lock); + task_barrier_rem_task(&hive->tb); + amdgpu_xgmi_sysfs_rem_dev_info(adev, hive); + if (hive->hi_req_gpu == adev) + hive->hi_req_gpu = NULL; + list_del(&adev->gmc.xgmi.head); + mutex_unlock(&hive->hive_lock); + + amdgpu_put_xgmi_hive(hive); + adev->hive = NULL; + + if (atomic_dec_return(&hive->number_devices) == 0) { + /* Remove the hive from global hive list */ + mutex_lock(&xgmi_mutex); + list_del(&hive->node); + mutex_unlock(&xgmi_mutex); + + amdgpu_put_xgmi_hive(hive); + } + + return 0; +} + +int amdgpu_xgmi_ras_late_init(struct amdgpu_device *adev) +{ + int r; + struct ras_ih_if ih_info = { + .cb = NULL, + }; + struct ras_fs_if fs_info = { + .sysfs_name = "xgmi_wafl_err_count", + }; + + if (!adev->gmc.xgmi.supported || + adev->gmc.xgmi.num_physical_nodes == 0) + return 0; + + amdgpu_xgmi_reset_ras_error_count(adev); + + if (!adev->gmc.xgmi.ras_if) { + adev->gmc.xgmi.ras_if = kmalloc(sizeof(struct ras_common_if), GFP_KERNEL); + if (!adev->gmc.xgmi.ras_if) + return -ENOMEM; + adev->gmc.xgmi.ras_if->block = AMDGPU_RAS_BLOCK__XGMI_WAFL; + adev->gmc.xgmi.ras_if->type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE; + adev->gmc.xgmi.ras_if->sub_block_index = 0; + strcpy(adev->gmc.xgmi.ras_if->name, "xgmi_wafl"); + } + ih_info.head = fs_info.head = *adev->gmc.xgmi.ras_if; + r = amdgpu_ras_late_init(adev, adev->gmc.xgmi.ras_if, + &fs_info, &ih_info); + if (r || !amdgpu_ras_is_supported(adev, adev->gmc.xgmi.ras_if->block)) { + kfree(adev->gmc.xgmi.ras_if); + adev->gmc.xgmi.ras_if = NULL; + } + + return r; +} + +void amdgpu_xgmi_ras_fini(struct amdgpu_device *adev) +{ + if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__XGMI_WAFL) && + adev->gmc.xgmi.ras_if) { + struct ras_common_if *ras_if = adev->gmc.xgmi.ras_if; + struct ras_ih_if ih_info = { + .cb = NULL, + }; + + amdgpu_ras_late_fini(adev, ras_if, &ih_info); + kfree(ras_if); + } +} + +uint64_t amdgpu_xgmi_get_relative_phy_addr(struct amdgpu_device *adev, + uint64_t addr) +{ + struct amdgpu_xgmi *xgmi = &adev->gmc.xgmi; + return (addr + xgmi->physical_node_id * xgmi->node_segment_size); +} + +static void pcs_clear_status(struct amdgpu_device *adev, uint32_t pcs_status_reg) +{ + WREG32_PCIE(pcs_status_reg, 0xFFFFFFFF); + WREG32_PCIE(pcs_status_reg, 0); +} + +void amdgpu_xgmi_reset_ras_error_count(struct amdgpu_device *adev) +{ + uint32_t i; + + switch (adev->asic_type) { + case CHIP_ARCTURUS: + for (i = 0; i < ARRAY_SIZE(xgmi_pcs_err_status_reg_arct); i++) + pcs_clear_status(adev, + xgmi_pcs_err_status_reg_arct[i]); + break; + case CHIP_VEGA20: + for (i = 0; i < ARRAY_SIZE(xgmi_pcs_err_status_reg_vg20); i++) + pcs_clear_status(adev, + xgmi_pcs_err_status_reg_vg20[i]); + break; + default: + break; + } +} + +static int amdgpu_xgmi_query_pcs_error_status(struct amdgpu_device *adev, + uint32_t value, + uint32_t *ue_count, + uint32_t *ce_count, + bool is_xgmi_pcs) +{ + int i; + int ue_cnt; + + if (is_xgmi_pcs) { + /* query xgmi pcs error status, + * only ue is supported */ + for (i = 0; i < ARRAY_SIZE(xgmi_pcs_ras_fields); i ++) { + ue_cnt = (value & + xgmi_pcs_ras_fields[i].pcs_err_mask) >> + xgmi_pcs_ras_fields[i].pcs_err_shift; + if (ue_cnt) { + dev_info(adev->dev, "%s detected\n", + xgmi_pcs_ras_fields[i].err_name); + *ue_count += ue_cnt; + } + } + } else { + /* query wafl pcs error status, + * only ue is supported */ + for (i = 0; i < ARRAY_SIZE(wafl_pcs_ras_fields); i++) { + ue_cnt = (value & + wafl_pcs_ras_fields[i].pcs_err_mask) >> + wafl_pcs_ras_fields[i].pcs_err_shift; + if (ue_cnt) { + dev_info(adev->dev, "%s detected\n", + wafl_pcs_ras_fields[i].err_name); + *ue_count += ue_cnt; + } + } + } + + return 0; +} + +int amdgpu_xgmi_query_ras_error_count(struct amdgpu_device *adev, + void *ras_error_status) +{ + struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status; + int i; + uint32_t data; + uint32_t ue_cnt = 0, ce_cnt = 0; + + if (!amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__XGMI_WAFL)) + return -EINVAL; + + err_data->ue_count = 0; + err_data->ce_count = 0; + + switch (adev->asic_type) { + case CHIP_ARCTURUS: + /* check xgmi pcs error */ + for (i = 0; i < ARRAY_SIZE(xgmi_pcs_err_status_reg_arct); i++) { + data = RREG32_PCIE(xgmi_pcs_err_status_reg_arct[i]); + if (data) + amdgpu_xgmi_query_pcs_error_status(adev, + data, &ue_cnt, &ce_cnt, true); + } + /* check wafl pcs error */ + for (i = 0; i < ARRAY_SIZE(wafl_pcs_err_status_reg_arct); i++) { + data = RREG32_PCIE(wafl_pcs_err_status_reg_arct[i]); + if (data) + amdgpu_xgmi_query_pcs_error_status(adev, + data, &ue_cnt, &ce_cnt, false); + } + break; + case CHIP_VEGA20: + default: + /* check xgmi pcs error */ + for (i = 0; i < ARRAY_SIZE(xgmi_pcs_err_status_reg_vg20); i++) { + data = RREG32_PCIE(xgmi_pcs_err_status_reg_vg20[i]); + if (data) + amdgpu_xgmi_query_pcs_error_status(adev, + data, &ue_cnt, &ce_cnt, true); + } + /* check wafl pcs error */ + for (i = 0; i < ARRAY_SIZE(wafl_pcs_err_status_reg_vg20); i++) { + data = RREG32_PCIE(wafl_pcs_err_status_reg_vg20[i]); + if (data) + amdgpu_xgmi_query_pcs_error_status(adev, + data, &ue_cnt, &ce_cnt, false); + } + break; + } + + amdgpu_xgmi_reset_ras_error_count(adev); + + err_data->ue_count += ue_cnt; + err_data->ce_count += ce_cnt; + + return 0; +} |