From 03e7ef2657b4de22eff521b3e44fc4ed5cdf4dca Mon Sep 17 00:00:00 2001 From: Terje Bergstrom Date: Fri, 24 Mar 2017 09:39:12 -0700 Subject: gpu: nvgpu: Move Linux kernel driver code to module.c Move Linux driver specific code to common/linux/module.c. This includes module initialization, power management, and interrupt functions. Move pci.c, pci.h and nvgpu_common.c under common/linux as they're Linux only files. JIRA NVGPU-16 Change-Id: If92b4dd78ebc0c2bbfa9fbca258e9552e4979b4b Signed-off-by: Terje Bergstrom Reviewed-on: http://git-master/r/1456162 Reviewed-by: mobile promotions Tested-by: mobile promotions --- drivers/gpu/nvgpu/common/nvgpu_common.c | 292 -------------------------------- 1 file changed, 292 deletions(-) delete mode 100644 drivers/gpu/nvgpu/common/nvgpu_common.c (limited to 'drivers/gpu/nvgpu/common/nvgpu_common.c') diff --git a/drivers/gpu/nvgpu/common/nvgpu_common.c b/drivers/gpu/nvgpu/common/nvgpu_common.c deleted file mode 100644 index 0c812d34..00000000 --- a/drivers/gpu/nvgpu/common/nvgpu_common.c +++ /dev/null @@ -1,292 +0,0 @@ -/* - * Copyright (c) 2016-2017, NVIDIA CORPORATION. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ - -#include -#include - -#include -#include -#include -#include - -#include "gk20a/gk20a_scale.h" -#include "gk20a/gk20a.h" -#include "gk20a/gr_gk20a.h" - -#define EMC3D_DEFAULT_RATIO 750 - -static void nvgpu_init_vars(struct gk20a *g) -{ - struct gk20a_platform *platform = dev_get_drvdata(g->dev); - - init_waitqueue_head(&g->sw_irq_stall_last_handled_wq); - init_waitqueue_head(&g->sw_irq_nonstall_last_handled_wq); - gk20a_init_gr(g); - - init_rwsem(&g->busy_lock); - - nvgpu_spinlock_init(&g->mc_enable_lock); - - nvgpu_mutex_init(&platform->railgate_lock); - nvgpu_mutex_init(&g->dbg_sessions_lock); - nvgpu_mutex_init(&g->client_lock); - nvgpu_mutex_init(&g->poweroff_lock); - - g->regs_saved = g->regs; - g->bar1_saved = g->bar1; - - g->emc3d_ratio = EMC3D_DEFAULT_RATIO; - - /* Set DMA parameters to allow larger sgt lists */ - g->dev->dma_parms = &g->dma_parms; - dma_set_max_seg_size(g->dev, UINT_MAX); - - nvgpu_init_list_node(&g->pending_sema_waits); - nvgpu_raw_spinlock_init(&g->pending_sema_waits_lock); - - nvgpu_init_list_node(&g->profiler_objects); -} - -static void nvgpu_init_timeout(struct gk20a *g) -{ - g->gr_idle_timeout_default = CONFIG_GK20A_DEFAULT_TIMEOUT; - if (nvgpu_platform_is_silicon(g)) - g->timeouts_enabled = true; - else if (nvgpu_platform_is_fpga(g)) { - g->gr_idle_timeout_default = GK20A_TIMEOUT_FPGA; - g->timeouts_enabled = true; - } -} - -static void nvgpu_init_timeslice(struct gk20a *g) -{ - g->runlist_interleave = true; - - g->timeslice_low_priority_us = 1300; - g->timeslice_medium_priority_us = 2600; - g->timeslice_high_priority_us = 5200; - - g->min_timeslice_us = 1000; - g->max_timeslice_us = 50000; -} - -static void nvgpu_init_pm_vars(struct gk20a *g) -{ - struct gk20a_platform *platform = dev_get_drvdata(g->dev); - - /* - * Set up initial power settings. For non-slicon platforms, disable - * power features and for silicon platforms, read from platform data - */ - g->slcg_enabled = - nvgpu_platform_is_silicon(g) ? platform->enable_slcg : false; - g->blcg_enabled = - nvgpu_platform_is_silicon(g) ? platform->enable_blcg : false; - g->elcg_enabled = - nvgpu_platform_is_silicon(g) ? platform->enable_elcg : false; - g->elpg_enabled = - nvgpu_platform_is_silicon(g) ? platform->enable_elpg : false; - g->aelpg_enabled = - nvgpu_platform_is_silicon(g) ? platform->enable_aelpg : false; - g->mscg_enabled = - nvgpu_platform_is_silicon(g) ? platform->enable_mscg : false; - - /* set default values to aelpg parameters */ - g->pmu.aelpg_param[0] = APCTRL_SAMPLING_PERIOD_PG_DEFAULT_US; - g->pmu.aelpg_param[1] = APCTRL_MINIMUM_IDLE_FILTER_DEFAULT_US; - g->pmu.aelpg_param[2] = APCTRL_MINIMUM_TARGET_SAVING_DEFAULT_US; - g->pmu.aelpg_param[3] = APCTRL_POWER_BREAKEVEN_DEFAULT_US; - g->pmu.aelpg_param[4] = APCTRL_CYCLES_PER_SAMPLE_MAX_DEFAULT; -} - -static void nvgpu_init_mm_vars(struct gk20a *g) -{ - struct gk20a_platform *platform = dev_get_drvdata(g->dev); - - g->mm.bypass_smmu = platform->bypass_smmu; - g->mm.disable_bigpage = platform->disable_bigpage; - g->mm.vidmem_is_vidmem = platform->vidmem_is_vidmem; - - nvgpu_mutex_init(&g->mm.tlb_lock); - nvgpu_mutex_init(&g->mm.priv_lock); -} - -int nvgpu_probe(struct gk20a *g, - const char *debugfs_symlink, - const char *interface_name, - struct class *class) -{ - struct gk20a_platform *platform = dev_get_drvdata(g->dev); - int err = 0; - - nvgpu_init_vars(g); - nvgpu_init_timeout(g); - nvgpu_init_timeslice(g); - nvgpu_init_pm_vars(g); - - /* Initialize the platform interface. */ - err = platform->probe(g->dev); - if (err) { - dev_err(g->dev, "platform probe failed"); - return err; - } - - /* platform probe can defer do user init only if probe succeeds */ - err = gk20a_user_init(g->dev, interface_name, class); - if (err) - return err; - - - /* Initialise scaling */ - if (IS_ENABLED(CONFIG_GK20A_DEVFREQ)) - gk20a_scale_init(g->dev); - - err = gk20a_secure_page_alloc(g->dev); - if (err) - dev_err(g->dev, - "failed to allocate secure buffer %d\n", err); - - if (platform->late_probe) { - err = platform->late_probe(g->dev); - if (err) { - dev_err(g->dev, "late probe failed"); - return err; - } - } - - nvgpu_init_mm_vars(g); - - gk20a_create_sysfs(g->dev); - gk20a_debug_init(g->dev, debugfs_symlink); - - g->dbg_regops_tmp_buf = nvgpu_kzalloc(g, SZ_4K); - if (!g->dbg_regops_tmp_buf) { - dev_err(g->dev, "couldn't allocate regops tmp buf"); - return -ENOMEM; - } - g->dbg_regops_tmp_buf_ops = - SZ_4K / sizeof(g->dbg_regops_tmp_buf[0]); - - g->remove_support = gk20a_remove_support; - - kref_init(&g->refcount); - - return 0; -} - -static const struct firmware *do_request_firmware(struct device *dev, - const char *prefix, const char *fw_name, int flags) -{ - const struct firmware *fw; - char *fw_path = NULL; - int path_len, err; - - if (prefix) { - path_len = strlen(prefix) + strlen(fw_name); - path_len += 2; /* for the path separator and zero terminator*/ - - fw_path = nvgpu_kzalloc(get_gk20a(dev), - sizeof(*fw_path) * path_len); - if (!fw_path) - return NULL; - - sprintf(fw_path, "%s/%s", prefix, fw_name); - fw_name = fw_path; - } - -#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0) - err = request_firmware(&fw, fw_name, dev); -#else - if (flags & NVGPU_REQUEST_FIRMWARE_NO_WARN) - err = request_firmware_direct(&fw, fw_name, dev); - else - err = request_firmware(&fw, fw_name, dev); -#endif - - nvgpu_kfree(get_gk20a(dev), fw_path); - if (err) - return NULL; - return fw; -} - -/* This is a simple wrapper around request_firmware that takes 'fw_name' and - * applies an IP specific relative path prefix to it. The caller is - * responsible for calling release_firmware later. */ -const struct firmware *nvgpu_request_firmware(struct gk20a *g, - const char *fw_name, - int flags) -{ - struct device *dev = g->dev; - const struct firmware *fw; - - /* current->fs is NULL when calling from SYS_EXIT. - Add a check here to prevent crash in request_firmware */ - if (!current->fs || !fw_name) - return NULL; - - BUG_ON(!g->name); - fw = do_request_firmware(dev, g->name, fw_name, flags); - -#ifdef CONFIG_TEGRA_GK20A - /* TO BE REMOVED - Support loading from legacy SOC specific path. */ - if (!fw && !(flags & NVGPU_REQUEST_FIRMWARE_NO_SOC)) { - struct gk20a_platform *platform = gk20a_get_platform(dev); - fw = do_request_firmware(dev, - platform->soc_name, fw_name, flags); - } -#endif - - return fw; -} - -/** - * cyclic_delta - Returns delta of cyclic integers a and b. - * - * @a - First integer - * @b - Second integer - * - * Note: if a is ahead of b, delta is positive. - */ -static int cyclic_delta(int a, int b) -{ - return a - b; -} - -/** - * nvgpu_wait_for_deferred_interrupts - Wait for interrupts to complete - * - * @g - The GPU to wait on. - * - * Waits until all interrupt handlers that have been scheduled to run have - * completed. - */ -void nvgpu_wait_for_deferred_interrupts(struct gk20a *g) -{ - int stall_irq_threshold = atomic_read(&g->hw_irq_stall_count); - int nonstall_irq_threshold = atomic_read(&g->hw_irq_nonstall_count); - - /* wait until all stalling irqs are handled */ - wait_event(g->sw_irq_stall_last_handled_wq, - cyclic_delta(stall_irq_threshold, - atomic_read(&g->sw_irq_stall_last_handled)) - <= 0); - - /* wait until all non-stalling irqs are handled */ - wait_event(g->sw_irq_nonstall_last_handled_wq, - cyclic_delta(nonstall_irq_threshold, - atomic_read(&g->sw_irq_nonstall_last_handled)) - <= 0); -} -- cgit v1.2.2