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git://nv-tegra.nvidia.com/linux-nvgpu.git
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f4ec400d5f
nvgpu_timeout_init() returns an error code only when the flags parameter is invalid. There are very few possible values for flags, so extract the two most common cases - cpu clock based and a retry based timeout - to functions that cannot fail and thus return nothing. Adjust all callers to use those, simplfying error handling quite a bit. Change-Id: I985fe7fa988ebbae25601d15cf57fd48eda0c677 Signed-off-by: Konsta Hölttä <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2613833 Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
139 lines
3.5 KiB
C
139 lines
3.5 KiB
C
/*
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* Copyright (c) 2019-2021, NVIDIA CORPORATION. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <nvgpu/gk20a.h>
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#include <nvgpu/firmware.h>
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#include <nvgpu/timers.h>
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#include <nvgpu/nvlink_minion.h>
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#ifdef CONFIG_NVGPU_NVLINK
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/* Extract a WORD from the MINION ucode */
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u32 nvgpu_nvlink_minion_extract_word(struct nvgpu_firmware *fw, u32 idx)
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{
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u32 out_data = 0U;
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u8 byte = 0U;
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u32 i = 0U;
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for (i = 0U; i < 4U; i++) {
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byte = fw->data[idx + i];
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out_data |= ((u32)byte) << (8U * i);
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}
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return out_data;
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}
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/*
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* Load minion FW and set up bootstrap
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*/
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int nvgpu_nvlink_minion_load(struct gk20a *g)
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{
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int err = 0;
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struct nvgpu_firmware *nvgpu_minion_fw = NULL;
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struct nvgpu_timeout timeout;
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u32 delay = POLL_DELAY_MIN_US;
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bool boot_cmplte;
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nvgpu_log_fn(g, " ");
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if (g->ops.nvlink.minion.is_running(g)) {
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return 0;
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}
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/* Get minion ucode binary */
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if (g->ops.nvlink.minion.is_debug_mode != NULL) {
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if (g->ops.nvlink.minion.is_debug_mode(g)) {
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nvgpu_minion_fw = nvgpu_request_firmware(g,
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"dgpu_minion_debug.bin", 0);
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} else {
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nvgpu_minion_fw = nvgpu_request_firmware(g,
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"dgpu_minion_prod.bin", 0);
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}
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}
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if (nvgpu_minion_fw == NULL) {
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nvgpu_err(g, "minion ucode get fail");
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err = -ENOENT;
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goto exit;
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}
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/* Minion reset */
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err = nvgpu_falcon_reset(&g->minion_flcn);
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if (err != 0) {
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nvgpu_err(g, "Minion reset failed");
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goto exit;
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}
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/* Clear interrupts */
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g->ops.nvlink.minion.clear_intr(g);
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err = nvgpu_nvlink_minion_load_ucode(g, nvgpu_minion_fw);
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if (err != 0) {
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goto exit;
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}
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/* set BOOTVEC to start of non-secure code */
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err = nvgpu_falcon_bootstrap(&g->minion_flcn, 0x0);
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if (err != 0) {
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nvgpu_err(g, "Minion bootstrap failed");
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goto exit;
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}
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nvgpu_timeout_init_cpu_timer(g, &timeout, nvgpu_get_poll_timeout(g));
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do {
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err = g->ops.nvlink.minion.is_boot_complete(g, &boot_cmplte);
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if (err != 0) {
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goto exit;
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}
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if (boot_cmplte) {
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nvgpu_log(g, gpu_dbg_nvlink,"MINION boot successful");
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break;
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}
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nvgpu_usleep_range(delay, delay * 2U);
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delay = min_t(unsigned int,
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delay << 1, POLL_DELAY_MAX_US);
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} while (nvgpu_timeout_expired_msg(&timeout,
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"minion boot timeout") == 0);
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/* Service interrupts */
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g->ops.nvlink.minion.falcon_isr(g);
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if (nvgpu_timeout_peek_expired(&timeout)) {
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err = -ETIMEDOUT;
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goto exit;
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}
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g->ops.nvlink.minion.init_intr(g);
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nvgpu_release_firmware(g, nvgpu_minion_fw);
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return err;
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exit:
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nvgpu_nvlink_free_minion_used_mem(g, nvgpu_minion_fw);
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return err;
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}
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#endif
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