459 lines
11 KiB
C
459 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2016-2019 HabanaLabs, Ltd.
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* All Rights Reserved.
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*/
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#include <uapi/misc/habanalabs.h>
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#include "habanalabs.h"
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#include <linux/fs.h>
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#include <linux/uaccess.h>
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#include <linux/slab.h>
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static u32 hl_debug_struct_size[HL_DEBUG_OP_TIMESTAMP + 1] = {
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[HL_DEBUG_OP_ETR] = sizeof(struct hl_debug_params_etr),
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[HL_DEBUG_OP_ETF] = sizeof(struct hl_debug_params_etf),
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[HL_DEBUG_OP_STM] = sizeof(struct hl_debug_params_stm),
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[HL_DEBUG_OP_FUNNEL] = 0,
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[HL_DEBUG_OP_BMON] = sizeof(struct hl_debug_params_bmon),
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[HL_DEBUG_OP_SPMU] = sizeof(struct hl_debug_params_spmu),
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[HL_DEBUG_OP_TIMESTAMP] = 0
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};
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static int device_status_info(struct hl_device *hdev, struct hl_info_args *args)
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{
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struct hl_info_device_status dev_stat = {0};
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u32 size = args->return_size;
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void __user *out = (void __user *) (uintptr_t) args->return_pointer;
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if ((!size) || (!out))
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return -EINVAL;
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dev_stat.status = hl_device_status(hdev);
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return copy_to_user(out, &dev_stat,
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min((size_t)size, sizeof(dev_stat))) ? -EFAULT : 0;
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}
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static int hw_ip_info(struct hl_device *hdev, struct hl_info_args *args)
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{
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struct hl_info_hw_ip_info hw_ip = {0};
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u32 size = args->return_size;
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void __user *out = (void __user *) (uintptr_t) args->return_pointer;
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struct asic_fixed_properties *prop = &hdev->asic_prop;
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u64 sram_kmd_size, dram_kmd_size;
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if ((!size) || (!out))
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return -EINVAL;
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sram_kmd_size = (prop->sram_user_base_address -
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prop->sram_base_address);
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dram_kmd_size = (prop->dram_user_base_address -
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prop->dram_base_address);
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hw_ip.device_id = hdev->asic_funcs->get_pci_id(hdev);
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hw_ip.sram_base_address = prop->sram_user_base_address;
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hw_ip.dram_base_address = prop->dram_user_base_address;
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hw_ip.tpc_enabled_mask = prop->tpc_enabled_mask;
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hw_ip.sram_size = prop->sram_size - sram_kmd_size;
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hw_ip.dram_size = prop->dram_size - dram_kmd_size;
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if (hw_ip.dram_size > 0)
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hw_ip.dram_enabled = 1;
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hw_ip.num_of_events = prop->num_of_events;
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memcpy(hw_ip.armcp_version,
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prop->armcp_info.armcp_version, VERSION_MAX_LEN);
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hw_ip.armcp_cpld_version = le32_to_cpu(prop->armcp_info.cpld_version);
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hw_ip.psoc_pci_pll_nr = prop->psoc_pci_pll_nr;
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hw_ip.psoc_pci_pll_nf = prop->psoc_pci_pll_nf;
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hw_ip.psoc_pci_pll_od = prop->psoc_pci_pll_od;
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hw_ip.psoc_pci_pll_div_factor = prop->psoc_pci_pll_div_factor;
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return copy_to_user(out, &hw_ip,
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min((size_t)size, sizeof(hw_ip))) ? -EFAULT : 0;
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}
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static int hw_events_info(struct hl_device *hdev, bool aggregate,
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struct hl_info_args *args)
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{
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u32 size, max_size = args->return_size;
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void __user *out = (void __user *) (uintptr_t) args->return_pointer;
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void *arr;
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if ((!max_size) || (!out))
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return -EINVAL;
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arr = hdev->asic_funcs->get_events_stat(hdev, aggregate, &size);
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return copy_to_user(out, arr, min(max_size, size)) ? -EFAULT : 0;
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}
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static int dram_usage_info(struct hl_fpriv *hpriv, struct hl_info_args *args)
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{
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struct hl_device *hdev = hpriv->hdev;
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struct hl_info_dram_usage dram_usage = {0};
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u32 max_size = args->return_size;
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void __user *out = (void __user *) (uintptr_t) args->return_pointer;
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struct asic_fixed_properties *prop = &hdev->asic_prop;
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u64 dram_kmd_size;
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if ((!max_size) || (!out))
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return -EINVAL;
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dram_kmd_size = (prop->dram_user_base_address -
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prop->dram_base_address);
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dram_usage.dram_free_mem = (prop->dram_size - dram_kmd_size) -
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atomic64_read(&hdev->dram_used_mem);
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if (hpriv->ctx)
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dram_usage.ctx_dram_mem =
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atomic64_read(&hpriv->ctx->dram_phys_mem);
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return copy_to_user(out, &dram_usage,
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min((size_t) max_size, sizeof(dram_usage))) ? -EFAULT : 0;
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}
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static int hw_idle(struct hl_device *hdev, struct hl_info_args *args)
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{
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struct hl_info_hw_idle hw_idle = {0};
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u32 max_size = args->return_size;
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void __user *out = (void __user *) (uintptr_t) args->return_pointer;
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if ((!max_size) || (!out))
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return -EINVAL;
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hw_idle.is_idle = hdev->asic_funcs->is_device_idle(hdev,
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&hw_idle.busy_engines_mask, NULL);
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return copy_to_user(out, &hw_idle,
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min((size_t) max_size, sizeof(hw_idle))) ? -EFAULT : 0;
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}
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static int debug_coresight(struct hl_device *hdev, struct hl_debug_args *args)
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{
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struct hl_debug_params *params;
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void *input = NULL, *output = NULL;
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int rc;
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params = kzalloc(sizeof(*params), GFP_KERNEL);
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if (!params)
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return -ENOMEM;
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params->reg_idx = args->reg_idx;
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params->enable = args->enable;
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params->op = args->op;
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if (args->input_ptr && args->input_size) {
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input = kzalloc(hl_debug_struct_size[args->op], GFP_KERNEL);
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if (!input) {
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rc = -ENOMEM;
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goto out;
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}
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if (copy_from_user(input, u64_to_user_ptr(args->input_ptr),
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args->input_size)) {
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rc = -EFAULT;
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dev_err(hdev->dev, "failed to copy input debug data\n");
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goto out;
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}
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params->input = input;
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}
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if (args->output_ptr && args->output_size) {
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output = kzalloc(args->output_size, GFP_KERNEL);
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if (!output) {
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rc = -ENOMEM;
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goto out;
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}
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params->output = output;
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params->output_size = args->output_size;
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}
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rc = hdev->asic_funcs->debug_coresight(hdev, params);
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if (rc) {
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dev_err(hdev->dev,
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"debug coresight operation failed %d\n", rc);
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goto out;
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}
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if (output) {
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if (copy_to_user((void __user *) (uintptr_t) args->output_ptr,
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output,
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args->output_size)) {
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dev_err(hdev->dev,
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"copy to user failed in debug ioctl\n");
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rc = -EFAULT;
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goto out;
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}
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}
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out:
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kfree(params);
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kfree(output);
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kfree(input);
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return rc;
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}
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static int device_utilization(struct hl_device *hdev, struct hl_info_args *args)
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{
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struct hl_info_device_utilization device_util = {0};
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u32 max_size = args->return_size;
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void __user *out = (void __user *) (uintptr_t) args->return_pointer;
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if ((!max_size) || (!out))
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return -EINVAL;
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if ((args->period_ms < 100) || (args->period_ms > 1000) ||
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(args->period_ms % 100)) {
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dev_err(hdev->dev,
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"period %u must be between 100 - 1000 and must be divisible by 100\n",
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args->period_ms);
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return -EINVAL;
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}
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device_util.utilization = hl_device_utilization(hdev, args->period_ms);
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return copy_to_user(out, &device_util,
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min((size_t) max_size, sizeof(device_util))) ? -EFAULT : 0;
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}
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static int _hl_info_ioctl(struct hl_fpriv *hpriv, void *data,
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struct device *dev)
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{
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struct hl_info_args *args = data;
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struct hl_device *hdev = hpriv->hdev;
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int rc;
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/*
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* Information is returned for the following opcodes even if the device
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* is disabled or in reset.
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*/
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switch (args->op) {
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case HL_INFO_HW_IP_INFO:
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return hw_ip_info(hdev, args);
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case HL_INFO_DEVICE_STATUS:
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return device_status_info(hdev, args);
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default:
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break;
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}
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if (hl_device_disabled_or_in_reset(hdev)) {
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dev_warn_ratelimited(dev,
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"Device is %s. Can't execute INFO IOCTL\n",
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atomic_read(&hdev->in_reset) ? "in_reset" : "disabled");
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return -EBUSY;
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}
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switch (args->op) {
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case HL_INFO_HW_EVENTS:
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rc = hw_events_info(hdev, false, args);
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break;
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case HL_INFO_DRAM_USAGE:
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rc = dram_usage_info(hpriv, args);
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break;
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case HL_INFO_HW_IDLE:
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rc = hw_idle(hdev, args);
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break;
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case HL_INFO_DEVICE_UTILIZATION:
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rc = device_utilization(hdev, args);
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break;
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case HL_INFO_HW_EVENTS_AGGREGATE:
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rc = hw_events_info(hdev, true, args);
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break;
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default:
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dev_err(dev, "Invalid request %d\n", args->op);
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rc = -ENOTTY;
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break;
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}
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return rc;
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}
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static int hl_info_ioctl(struct hl_fpriv *hpriv, void *data)
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{
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return _hl_info_ioctl(hpriv, data, hpriv->hdev->dev);
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}
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static int hl_info_ioctl_control(struct hl_fpriv *hpriv, void *data)
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{
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return _hl_info_ioctl(hpriv, data, hpriv->hdev->dev_ctrl);
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}
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static int hl_debug_ioctl(struct hl_fpriv *hpriv, void *data)
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{
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struct hl_debug_args *args = data;
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struct hl_device *hdev = hpriv->hdev;
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int rc = 0;
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if (hl_device_disabled_or_in_reset(hdev)) {
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dev_warn_ratelimited(hdev->dev,
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"Device is %s. Can't execute DEBUG IOCTL\n",
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atomic_read(&hdev->in_reset) ? "in_reset" : "disabled");
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return -EBUSY;
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}
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switch (args->op) {
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case HL_DEBUG_OP_ETR:
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case HL_DEBUG_OP_ETF:
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case HL_DEBUG_OP_STM:
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case HL_DEBUG_OP_FUNNEL:
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case HL_DEBUG_OP_BMON:
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case HL_DEBUG_OP_SPMU:
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case HL_DEBUG_OP_TIMESTAMP:
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if (!hdev->in_debug) {
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dev_err_ratelimited(hdev->dev,
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"Rejecting debug configuration request because device not in debug mode\n");
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return -EFAULT;
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}
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args->input_size =
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min(args->input_size, hl_debug_struct_size[args->op]);
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rc = debug_coresight(hdev, args);
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break;
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case HL_DEBUG_OP_SET_MODE:
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rc = hl_device_set_debug_mode(hdev, (bool) args->enable);
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break;
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default:
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dev_err(hdev->dev, "Invalid request %d\n", args->op);
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rc = -ENOTTY;
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break;
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}
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return rc;
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}
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#define HL_IOCTL_DEF(ioctl, _func) \
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[_IOC_NR(ioctl)] = {.cmd = ioctl, .func = _func}
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static const struct hl_ioctl_desc hl_ioctls[] = {
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HL_IOCTL_DEF(HL_IOCTL_INFO, hl_info_ioctl),
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HL_IOCTL_DEF(HL_IOCTL_CB, hl_cb_ioctl),
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HL_IOCTL_DEF(HL_IOCTL_CS, hl_cs_ioctl),
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HL_IOCTL_DEF(HL_IOCTL_WAIT_CS, hl_cs_wait_ioctl),
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HL_IOCTL_DEF(HL_IOCTL_MEMORY, hl_mem_ioctl),
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HL_IOCTL_DEF(HL_IOCTL_DEBUG, hl_debug_ioctl)
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};
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static const struct hl_ioctl_desc hl_ioctls_control[] = {
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HL_IOCTL_DEF(HL_IOCTL_INFO, hl_info_ioctl_control)
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};
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static long _hl_ioctl(struct file *filep, unsigned int cmd, unsigned long arg,
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const struct hl_ioctl_desc *ioctl, struct device *dev)
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{
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struct hl_fpriv *hpriv = filep->private_data;
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struct hl_device *hdev = hpriv->hdev;
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unsigned int nr = _IOC_NR(cmd);
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char stack_kdata[128] = {0};
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char *kdata = NULL;
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unsigned int usize, asize;
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hl_ioctl_t *func;
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u32 hl_size;
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int retcode;
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if (hdev->hard_reset_pending) {
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dev_crit_ratelimited(hdev->dev_ctrl,
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"Device HARD reset pending! Please close FD\n");
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return -ENODEV;
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}
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/* Do not trust userspace, use our own definition */
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func = ioctl->func;
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if (unlikely(!func)) {
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dev_dbg(dev, "no function\n");
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retcode = -ENOTTY;
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goto out_err;
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}
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hl_size = _IOC_SIZE(ioctl->cmd);
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usize = asize = _IOC_SIZE(cmd);
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if (hl_size > asize)
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asize = hl_size;
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cmd = ioctl->cmd;
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if (cmd & (IOC_IN | IOC_OUT)) {
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if (asize <= sizeof(stack_kdata)) {
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kdata = stack_kdata;
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} else {
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kdata = kzalloc(asize, GFP_KERNEL);
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if (!kdata) {
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retcode = -ENOMEM;
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goto out_err;
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}
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}
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}
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if (cmd & IOC_IN) {
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if (copy_from_user(kdata, (void __user *)arg, usize)) {
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retcode = -EFAULT;
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goto out_err;
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}
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} else if (cmd & IOC_OUT) {
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memset(kdata, 0, usize);
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}
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retcode = func(hpriv, kdata);
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if (cmd & IOC_OUT)
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if (copy_to_user((void __user *)arg, kdata, usize))
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retcode = -EFAULT;
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out_err:
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if (retcode)
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dev_dbg(dev, "error in ioctl: pid=%d, cmd=0x%02x, nr=0x%02x\n",
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task_pid_nr(current), cmd, nr);
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if (kdata != stack_kdata)
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kfree(kdata);
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return retcode;
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}
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long hl_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
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{
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struct hl_fpriv *hpriv = filep->private_data;
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struct hl_device *hdev = hpriv->hdev;
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const struct hl_ioctl_desc *ioctl = NULL;
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unsigned int nr = _IOC_NR(cmd);
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if ((nr >= HL_COMMAND_START) && (nr < HL_COMMAND_END)) {
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ioctl = &hl_ioctls[nr];
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} else {
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dev_err(hdev->dev, "invalid ioctl: pid=%d, nr=0x%02x\n",
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task_pid_nr(current), nr);
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return -ENOTTY;
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}
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return _hl_ioctl(filep, cmd, arg, ioctl, hdev->dev);
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}
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long hl_ioctl_control(struct file *filep, unsigned int cmd, unsigned long arg)
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{
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struct hl_fpriv *hpriv = filep->private_data;
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struct hl_device *hdev = hpriv->hdev;
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const struct hl_ioctl_desc *ioctl = NULL;
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unsigned int nr = _IOC_NR(cmd);
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if (nr == _IOC_NR(HL_IOCTL_INFO)) {
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ioctl = &hl_ioctls_control[nr];
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} else {
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dev_err(hdev->dev_ctrl, "invalid ioctl: pid=%d, nr=0x%02x\n",
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task_pid_nr(current), nr);
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return -ENOTTY;
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}
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return _hl_ioctl(filep, cmd, arg, ioctl, hdev->dev_ctrl);
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}
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