mirror of
git://nv-tegra.nvidia.com/linux-hwpm.git
synced 2025-12-24 02:07:34 +03:00
edb9e2c245
Fix coding standard cert-c violations because of unsafe calculations. Introduce safe subtract, add, multiply and cast APIs and use throughout the hwpm driver. Bug 3512545 Change-Id: If374629ac75b48a8bc08b1b7a9a41ea5ef0526b1 Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2677160 Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com> Reviewed-by: Vasuki Shankar <vasukis@nvidia.com> Reviewed-by: Seema Khowala <seemaj@nvidia.com> Reviewed-by: Prateek Patel <prpatel@nvidia.com> GVS: Gerrit_Virtual_Submit
116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
/*
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* Copyright (c) 2021-2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <soc/tegra/fuse.h>
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#include <uapi/linux/tegra-soc-hwpm-uapi.h>
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#include <tegra_hwpm_log.h>
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#include <tegra_hwpm.h>
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#include <tegra_hwpm_common.h>
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#include <tegra_hwpm_static_analysis.h>
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int tegra_soc_hwpm_reserve_resource(struct tegra_soc_hwpm *hwpm, u32 resource)
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{
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struct tegra_soc_hwpm_chip *active_chip = hwpm->active_chip;
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struct hwpm_ip *chip_ip = NULL;
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u32 ip_idx = TEGRA_SOC_HWPM_IP_INACTIVE;
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int ret = 0;
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tegra_hwpm_fn(hwpm, " ");
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tegra_hwpm_dbg(hwpm, hwpm_info,
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"User requesting to reserve resource %d", resource);
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/* Translate resource to ip_idx */
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if (!active_chip->is_resource_active(hwpm, resource, &ip_idx)) {
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tegra_hwpm_err(hwpm, "Requested resource %d is unavailable",
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resource);
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/* Remove after uapi update */
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if (resource == TEGRA_SOC_HWPM_RESOURCE_MSS_NVLINK) {
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tegra_hwpm_dbg(hwpm, hwpm_verbose,
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"ignoring resource %d", resource);
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return 0;
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}
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return -EINVAL;
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}
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/* Get IP structure from ip_idx */
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chip_ip = active_chip->chip_ips[ip_idx];
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/* Skip IPs which are already reserved (covers PMA and RTR case) */
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if (chip_ip->reserved) {
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tegra_hwpm_dbg(hwpm, hwpm_info,
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"Chip IP %d already reserved", ip_idx);
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return 0;
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}
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/* Make sure IP override is not enabled */
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if (chip_ip->override_enable) {
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tegra_hwpm_dbg(hwpm, hwpm_info,
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"Chip IP %d not available", ip_idx);
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return 0;
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}
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if (active_chip->reserve_given_resource == NULL) {
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tegra_hwpm_err(hwpm,
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"reserve_given_resource HAL uninitialized");
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return -ENODEV;
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}
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ret = active_chip->reserve_given_resource(hwpm, ip_idx);
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if (ret != 0) {
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tegra_hwpm_err(hwpm, "Failed to reserve resource %d", resource);
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return ret;
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}
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return 0;
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}
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int tegra_soc_hwpm_release_resources(struct tegra_soc_hwpm *hwpm)
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{
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int ret = 0;
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tegra_hwpm_fn(hwpm, " ");
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if (hwpm->active_chip->release_all_resources == NULL) {
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tegra_hwpm_err(hwpm, "release_resources HAL uninitialized");
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return -ENODEV;
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}
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ret = hwpm->active_chip->release_all_resources(hwpm);
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if (ret != 0) {
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tegra_hwpm_err(hwpm, "failed to release resources");
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return ret;
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}
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return 0;
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}
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int tegra_soc_hwpm_bind_resources(struct tegra_soc_hwpm *hwpm)
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{
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int ret = 0;
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tegra_hwpm_fn(hwpm, " ");
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if (hwpm->active_chip->bind_reserved_resources == NULL) {
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tegra_hwpm_err(hwpm,
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"bind_reserved_resources HAL uninitialized");
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return -ENODEV;
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}
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ret = hwpm->active_chip->bind_reserved_resources(hwpm);
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if (ret != 0) {
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tegra_hwpm_err(hwpm, "failed to bind resources");
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return ret;
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}
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return 0;
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}
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