mirror of https://gitee.com/openkylin/linux.git
gpu: host1x: drm: Add memory manager and fb
This patch introduces a memory manager for tegra drm and moves existing parts to use it. As cma framebuffer helpers can no more be used, this patch adds also a separate framebuffer driver for tegra. Signed-off-by: Arto Merilainen <amerilainen@nvidia.com> Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de> Tested-by: Thierry Reding <thierry.reding@avionic-design.de> Tested-by: Erik Faye-Lund <kusmabite@gmail.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
This commit is contained in:
Arto Merilainen
Thierry Reding
parent
692e6d7be8
commit
de2ba664c3
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@ -15,4 +15,5 @@ ccflags-$(CONFIG_DRM_TEGRA_DEBUG) += -DDEBUG
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host1x-$(CONFIG_DRM_TEGRA) += drm/drm.o drm/fb.o drm/dc.o
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host1x-$(CONFIG_DRM_TEGRA) += drm/output.o drm/rgb.o drm/hdmi.o
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host1x-$(CONFIG_DRM_TEGRA) += drm/gem.o
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obj-$(CONFIG_TEGRA_HOST1X) += host1x.o
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@ -2,11 +2,9 @@ config DRM_TEGRA
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bool "NVIDIA Tegra DRM"
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depends on DRM && OF
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select DRM_KMS_HELPER
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select DRM_GEM_CMA_HELPER
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select DRM_KMS_CMA_HELPER
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select FB_CFB_FILLRECT
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select FB_CFB_COPYAREA
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select FB_CFB_IMAGEBLIT
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select FB_SYS_FILLRECT
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select FB_SYS_COPYAREA
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select FB_SYS_IMAGEBLIT
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help
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Choose this option if you have an NVIDIA Tegra SoC.
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@ -14,9 +14,10 @@
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#include <linux/platform_device.h>
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#include <linux/clk/tegra.h>
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#include "drm.h"
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#include "dc.h"
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#include "host1x_client.h"
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#include "dc.h"
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#include "drm.h"
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#include "gem.h"
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struct tegra_plane {
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struct drm_plane base;
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@ -52,9 +53,9 @@ static int tegra_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
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window.bits_per_pixel = fb->bits_per_pixel;
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for (i = 0; i < drm_format_num_planes(fb->pixel_format); i++) {
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struct drm_gem_cma_object *gem = drm_fb_cma_get_gem_obj(fb, i);
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struct tegra_bo *bo = tegra_fb_get_plane(fb, i);
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window.base[i] = gem->paddr + fb->offsets[i];
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window.base[i] = bo->paddr + fb->offsets[i];
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/*
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* Tegra doesn't support different strides for U and V planes
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@ -137,7 +138,7 @@ static int tegra_dc_add_planes(struct drm_device *drm, struct tegra_dc *dc)
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static int tegra_dc_set_base(struct tegra_dc *dc, int x, int y,
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struct drm_framebuffer *fb)
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{
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struct drm_gem_cma_object *gem = drm_fb_cma_get_gem_obj(fb, 0);
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struct tegra_bo *bo = tegra_fb_get_plane(fb, 0);
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unsigned long value;
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tegra_dc_writel(dc, WINDOW_A_SELECT, DC_CMD_DISPLAY_WINDOW_HEADER);
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@ -145,7 +146,7 @@ static int tegra_dc_set_base(struct tegra_dc *dc, int x, int y,
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value = fb->offsets[0] + y * fb->pitches[0] +
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x * fb->bits_per_pixel / 8;
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tegra_dc_writel(dc, gem->paddr + value, DC_WINBUF_START_ADDR);
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tegra_dc_writel(dc, bo->paddr + value, DC_WINBUF_START_ADDR);
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tegra_dc_writel(dc, fb->pitches[0], DC_WIN_LINE_STRIDE);
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value = GENERAL_UPDATE | WIN_A_UPDATE;
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@ -187,20 +188,20 @@ static void tegra_dc_finish_page_flip(struct tegra_dc *dc)
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{
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struct drm_device *drm = dc->base.dev;
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struct drm_crtc *crtc = &dc->base;
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struct drm_gem_cma_object *gem;
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unsigned long flags, base;
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struct tegra_bo *bo;
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if (!dc->event)
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return;
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gem = drm_fb_cma_get_gem_obj(crtc->fb, 0);
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bo = tegra_fb_get_plane(crtc->fb, 0);
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/* check if new start address has been latched */
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tegra_dc_writel(dc, READ_MUX, DC_CMD_STATE_ACCESS);
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base = tegra_dc_readl(dc, DC_WINBUF_START_ADDR);
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tegra_dc_writel(dc, 0, DC_CMD_STATE_ACCESS);
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if (base == gem->paddr + crtc->fb->offsets[0]) {
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if (base == bo->paddr + crtc->fb->offsets[0]) {
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spin_lock_irqsave(&drm->event_lock, flags);
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drm_send_vblank_event(drm, dc->pipe, dc->event);
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drm_vblank_put(drm, dc->pipe);
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@ -570,7 +571,7 @@ static int tegra_crtc_mode_set(struct drm_crtc *crtc,
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struct drm_display_mode *adjusted,
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int x, int y, struct drm_framebuffer *old_fb)
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{
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struct drm_gem_cma_object *gem = drm_fb_cma_get_gem_obj(crtc->fb, 0);
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struct tegra_bo *bo = tegra_fb_get_plane(crtc->fb, 0);
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struct tegra_dc *dc = to_tegra_dc(crtc);
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struct tegra_dc_window window;
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unsigned long div, value;
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@ -617,7 +618,7 @@ static int tegra_crtc_mode_set(struct drm_crtc *crtc,
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window.format = tegra_dc_format(crtc->fb->pixel_format);
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window.bits_per_pixel = crtc->fb->bits_per_pixel;
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window.stride[0] = crtc->fb->pitches[0];
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window.base[0] = gem->paddr;
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window.base[0] = bo->paddr;
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err = tegra_dc_setup_window(dc, 0, &window);
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if (err < 0)
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@ -15,7 +15,10 @@
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#include <asm/dma-iommu.h>
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#include "host1x_client.h"
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#include "dev.h"
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#include "drm.h"
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#include "gem.h"
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#include "syncpt.h"
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#define DRIVER_NAME "tegra"
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#define DRIVER_DESC "NVIDIA Tegra graphics"
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@ -281,7 +284,7 @@ static void tegra_drm_lastclose(struct drm_device *drm)
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{
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struct host1x_drm *host1x = drm->dev_private;
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drm_fbdev_cma_restore_mode(host1x->fbdev);
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tegra_fbdev_restore_mode(host1x->fbdev);
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}
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static struct drm_ioctl_desc tegra_drm_ioctls[] = {
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@ -292,7 +295,7 @@ static const struct file_operations tegra_drm_fops = {
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.open = drm_open,
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.release = drm_release,
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.unlocked_ioctl = drm_ioctl,
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.mmap = drm_gem_cma_mmap,
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.mmap = tegra_drm_mmap,
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.poll = drm_poll,
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.fasync = drm_fasync,
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.read = drm_read,
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@ -408,11 +411,11 @@ struct drm_driver tegra_drm_driver = {
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.debugfs_cleanup = tegra_debugfs_cleanup,
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#endif
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.gem_free_object = drm_gem_cma_free_object,
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.gem_vm_ops = &drm_gem_cma_vm_ops,
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.dumb_create = drm_gem_cma_dumb_create,
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.dumb_map_offset = drm_gem_cma_dumb_map_offset,
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.dumb_destroy = drm_gem_cma_dumb_destroy,
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.gem_free_object = tegra_bo_free_object,
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.gem_vm_ops = &tegra_bo_vm_ops,
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.dumb_create = tegra_bo_dumb_create,
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.dumb_map_offset = tegra_bo_dumb_map_offset,
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.dumb_destroy = tegra_bo_dumb_destroy,
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.ioctls = tegra_drm_ioctls,
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.num_ioctls = ARRAY_SIZE(tegra_drm_ioctls),
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@ -14,10 +14,19 @@
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_edid.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_gem_cma_helper.h>
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#include <drm/drm_fb_cma_helper.h>
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#include <drm/drm_fixed.h>
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struct tegra_fb {
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struct drm_framebuffer base;
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struct tegra_bo **planes;
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unsigned int num_planes;
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};
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struct tegra_fbdev {
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struct drm_fb_helper base;
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struct tegra_fb *fb;
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};
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struct host1x_drm {
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struct drm_device *drm;
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struct device *dev;
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@ -33,7 +42,7 @@ struct host1x_drm {
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struct mutex clients_lock;
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struct list_head clients;
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struct drm_fbdev_cma *fbdev;
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struct tegra_fbdev *fbdev;
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};
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struct host1x_client;
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@ -226,8 +235,11 @@ extern int tegra_output_init(struct drm_device *drm, struct tegra_output *output
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extern int tegra_output_exit(struct tegra_output *output);
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/* from fb.c */
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struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
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unsigned int index);
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extern int tegra_drm_fb_init(struct drm_device *drm);
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extern void tegra_drm_fb_exit(struct drm_device *drm);
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extern void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
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extern struct drm_driver tegra_drm_driver;
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@ -1,30 +1,343 @@
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/*
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* Copyright (C) 2012 Avionic Design GmbH
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* Copyright (C) 2012-2013 Avionic Design GmbH
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* Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
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*
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* Based on the KMS/FB CMA helpers
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* Copyright (C) 2012 Analog Device Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include "drm.h"
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#include <linux/module.h>
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static void tegra_drm_fb_output_poll_changed(struct drm_device *drm)
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#include "drm.h"
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#include "gem.h"
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static inline struct tegra_fb *to_tegra_fb(struct drm_framebuffer *fb)
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{
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return container_of(fb, struct tegra_fb, base);
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}
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static inline struct tegra_fbdev *to_tegra_fbdev(struct drm_fb_helper *helper)
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{
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return container_of(helper, struct tegra_fbdev, base);
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}
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struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
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unsigned int index)
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{
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struct tegra_fb *fb = to_tegra_fb(framebuffer);
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if (index >= drm_format_num_planes(framebuffer->pixel_format))
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return NULL;
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return fb->planes[index];
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}
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static void tegra_fb_destroy(struct drm_framebuffer *framebuffer)
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{
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struct tegra_fb *fb = to_tegra_fb(framebuffer);
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unsigned int i;
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for (i = 0; i < fb->num_planes; i++) {
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struct tegra_bo *bo = fb->planes[i];
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if (bo)
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drm_gem_object_unreference_unlocked(&bo->gem);
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}
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drm_framebuffer_cleanup(framebuffer);
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kfree(fb->planes);
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kfree(fb);
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}
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static int tegra_fb_create_handle(struct drm_framebuffer *framebuffer,
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struct drm_file *file, unsigned int *handle)
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{
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struct tegra_fb *fb = to_tegra_fb(framebuffer);
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return drm_gem_handle_create(file, &fb->planes[0]->gem, handle);
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}
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static struct drm_framebuffer_funcs tegra_fb_funcs = {
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.destroy = tegra_fb_destroy,
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.create_handle = tegra_fb_create_handle,
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};
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static struct tegra_fb *tegra_fb_alloc(struct drm_device *drm,
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struct drm_mode_fb_cmd2 *mode_cmd,
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struct tegra_bo **planes,
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unsigned int num_planes)
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{
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struct tegra_fb *fb;
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unsigned int i;
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int err;
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fb = kzalloc(sizeof(*fb), GFP_KERNEL);
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if (!fb)
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return ERR_PTR(-ENOMEM);
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fb->planes = kzalloc(num_planes * sizeof(*planes), GFP_KERNEL);
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if (!fb->planes)
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return ERR_PTR(-ENOMEM);
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fb->num_planes = num_planes;
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drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
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for (i = 0; i < fb->num_planes; i++)
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fb->planes[i] = planes[i];
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err = drm_framebuffer_init(drm, &fb->base, &tegra_fb_funcs);
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if (err < 0) {
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dev_err(drm->dev, "failed to initialize framebuffer: %d\n",
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err);
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kfree(fb->planes);
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kfree(fb);
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return ERR_PTR(err);
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}
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return fb;
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}
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static struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
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struct drm_file *file,
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struct drm_mode_fb_cmd2 *cmd)
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{
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unsigned int hsub, vsub, i;
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struct tegra_bo *planes[4];
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struct drm_gem_object *gem;
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struct tegra_fb *fb;
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int err;
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hsub = drm_format_horz_chroma_subsampling(cmd->pixel_format);
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vsub = drm_format_vert_chroma_subsampling(cmd->pixel_format);
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for (i = 0; i < drm_format_num_planes(cmd->pixel_format); i++) {
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unsigned int width = cmd->width / (i ? hsub : 1);
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unsigned int height = cmd->height / (i ? vsub : 1);
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unsigned int size, bpp;
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gem = drm_gem_object_lookup(drm, file, cmd->handles[i]);
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if (!gem) {
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err = -ENXIO;
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goto unreference;
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}
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bpp = drm_format_plane_cpp(cmd->pixel_format, i);
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size = (height - 1) * cmd->pitches[i] +
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width * bpp + cmd->offsets[i];
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if (gem->size < size) {
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err = -EINVAL;
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goto unreference;
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}
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planes[i] = to_tegra_bo(gem);
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}
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fb = tegra_fb_alloc(drm, cmd, planes, i);
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if (IS_ERR(fb)) {
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err = PTR_ERR(fb);
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goto unreference;
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}
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return &fb->base;
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unreference:
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while (i--)
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drm_gem_object_unreference_unlocked(&planes[i]->gem);
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return ERR_PTR(err);
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}
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static struct fb_ops tegra_fb_ops = {
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.owner = THIS_MODULE,
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.fb_fillrect = sys_fillrect,
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.fb_copyarea = sys_copyarea,
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.fb_imageblit = sys_imageblit,
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.fb_check_var = drm_fb_helper_check_var,
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.fb_set_par = drm_fb_helper_set_par,
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.fb_blank = drm_fb_helper_blank,
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.fb_pan_display = drm_fb_helper_pan_display,
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.fb_setcmap = drm_fb_helper_setcmap,
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};
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static int tegra_fbdev_probe(struct drm_fb_helper *helper,
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struct drm_fb_helper_surface_size *sizes)
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{
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struct tegra_fbdev *fbdev = to_tegra_fbdev(helper);
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struct drm_device *drm = helper->dev;
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struct drm_mode_fb_cmd2 cmd = { 0 };
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unsigned int bytes_per_pixel;
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struct drm_framebuffer *fb;
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unsigned long offset;
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struct fb_info *info;
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struct tegra_bo *bo;
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size_t size;
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int err;
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bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8);
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cmd.width = sizes->surface_width;
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cmd.height = sizes->surface_height;
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cmd.pitches[0] = sizes->surface_width * bytes_per_pixel;
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cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
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sizes->surface_depth);
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size = cmd.pitches[0] * cmd.height;
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bo = tegra_bo_create(drm, size);
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if (IS_ERR(bo))
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return PTR_ERR(bo);
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info = framebuffer_alloc(0, drm->dev);
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if (!info) {
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dev_err(drm->dev, "failed to allocate framebuffer info\n");
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tegra_bo_free_object(&bo->gem);
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return -ENOMEM;
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}
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fbdev->fb = tegra_fb_alloc(drm, &cmd, &bo, 1);
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if (IS_ERR(fbdev->fb)) {
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dev_err(drm->dev, "failed to allocate DRM framebuffer\n");
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err = PTR_ERR(fbdev->fb);
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goto release;
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}
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fb = &fbdev->fb->base;
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helper->fb = fb;
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helper->fbdev = info;
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info->par = helper;
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info->flags = FBINFO_FLAG_DEFAULT;
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info->fbops = &tegra_fb_ops;
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err = fb_alloc_cmap(&info->cmap, 256, 0);
|
||||
if (err < 0) {
|
||||
dev_err(drm->dev, "failed to allocate color map: %d\n", err);
|
||||
goto destroy;
|
||||
}
|
||||
|
||||
drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
|
||||
drm_fb_helper_fill_var(info, helper, fb->width, fb->height);
|
||||
|
||||
offset = info->var.xoffset * bytes_per_pixel +
|
||||
info->var.yoffset * fb->pitches[0];
|
||||
|
||||
drm->mode_config.fb_base = (resource_size_t)bo->paddr;
|
||||
info->screen_base = bo->vaddr + offset;
|
||||
info->screen_size = size;
|
||||
info->fix.smem_start = (unsigned long)(bo->paddr + offset);
|
||||
info->fix.smem_len = size;
|
||||
|
||||
return 0;
|
||||
|
||||
destroy:
|
||||
drm_framebuffer_unregister_private(fb);
|
||||
tegra_fb_destroy(fb);
|
||||
release:
|
||||
framebuffer_release(info);
|
||||
return err;
|
||||
}
|
||||
|
||||
static struct drm_fb_helper_funcs tegra_fb_helper_funcs = {
|
||||
.fb_probe = tegra_fbdev_probe,
|
||||
};
|
||||
|
||||
static struct tegra_fbdev *tegra_fbdev_create(struct drm_device *drm,
|
||||
unsigned int preferred_bpp,
|
||||
unsigned int num_crtc,
|
||||
unsigned int max_connectors)
|
||||
{
|
||||
struct drm_fb_helper *helper;
|
||||
struct tegra_fbdev *fbdev;
|
||||
int err;
|
||||
|
||||
fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
|
||||
if (!fbdev) {
|
||||
dev_err(drm->dev, "failed to allocate DRM fbdev\n");
|
||||
return ERR_PTR(-ENOMEM);
|
||||
}
|
||||
|
||||
fbdev->base.funcs = &tegra_fb_helper_funcs;
|
||||
helper = &fbdev->base;
|
||||
|
||||
err = drm_fb_helper_init(drm, &fbdev->base, num_crtc, max_connectors);
|
||||
if (err < 0) {
|
||||
dev_err(drm->dev, "failed to initialize DRM FB helper\n");
|
||||
goto free;
|
||||
}
|
||||
|
||||
err = drm_fb_helper_single_add_all_connectors(&fbdev->base);
|
||||
if (err < 0) {
|
||||
dev_err(drm->dev, "failed to add connectors\n");
|
||||
goto fini;
|
||||
}
|
||||
|
||||
drm_helper_disable_unused_functions(drm);
|
||||
|
||||
err = drm_fb_helper_initial_config(&fbdev->base, preferred_bpp);
|
||||
if (err < 0) {
|
||||
dev_err(drm->dev, "failed to set initial configuration\n");
|
||||
goto fini;
|
||||
}
|
||||
|
||||
return fbdev;
|
||||
|
||||
fini:
|
||||
drm_fb_helper_fini(&fbdev->base);
|
||||
free:
|
||||
kfree(fbdev);
|
||||
return ERR_PTR(err);
|
||||
}
|
||||
|
||||
static void tegra_fbdev_free(struct tegra_fbdev *fbdev)
|
||||
{
|
||||
struct fb_info *info = fbdev->base.fbdev;
|
||||
|
||||
if (info) {
|
||||
int err;
|
||||
|
||||
err = unregister_framebuffer(info);
|
||||
if (err < 0)
|
||||
DRM_DEBUG_KMS("failed to unregister framebuffer\n");
|
||||
|
||||
if (info->cmap.len)
|
||||
fb_dealloc_cmap(&info->cmap);
|
||||
|
||||
framebuffer_release(info);
|
||||
}
|
||||
|
||||
if (fbdev->fb) {
|
||||
drm_framebuffer_unregister_private(&fbdev->fb->base);
|
||||
tegra_fb_destroy(&fbdev->fb->base);
|
||||
}
|
||||
|
||||
drm_fb_helper_fini(&fbdev->base);
|
||||
kfree(fbdev);
|
||||
}
|
||||
|
||||
static void tegra_fb_output_poll_changed(struct drm_device *drm)
|
||||
{
|
||||
struct host1x_drm *host1x = drm->dev_private;
|
||||
|
||||
drm_fbdev_cma_hotplug_event(host1x->fbdev);
|
||||
if (host1x->fbdev)
|
||||
drm_fb_helper_hotplug_event(&host1x->fbdev->base);
|
||||
}
|
||||
|
||||
static const struct drm_mode_config_funcs tegra_drm_mode_funcs = {
|
||||
.fb_create = drm_fb_cma_create,
|
||||
.output_poll_changed = tegra_drm_fb_output_poll_changed,
|
||||
.fb_create = tegra_fb_create,
|
||||
.output_poll_changed = tegra_fb_output_poll_changed,
|
||||
};
|
||||
|
||||
int tegra_drm_fb_init(struct drm_device *drm)
|
||||
{
|
||||
struct host1x_drm *host1x = drm->dev_private;
|
||||
struct drm_fbdev_cma *fbdev;
|
||||
struct tegra_fbdev *fbdev;
|
||||
|
||||
drm->mode_config.min_width = 0;
|
||||
drm->mode_config.min_height = 0;
|
||||
|
|
@ -34,7 +347,7 @@ int tegra_drm_fb_init(struct drm_device *drm)
|
|||
|
||||
drm->mode_config.funcs = &tegra_drm_mode_funcs;
|
||||
|
||||
fbdev = drm_fbdev_cma_init(drm, 32, drm->mode_config.num_crtc,
|
||||
fbdev = tegra_fbdev_create(drm, 32, drm->mode_config.num_crtc,
|
||||
drm->mode_config.num_connector);
|
||||
if (IS_ERR(fbdev))
|
||||
return PTR_ERR(fbdev);
|
||||
|
|
@ -48,5 +361,14 @@ void tegra_drm_fb_exit(struct drm_device *drm)
|
|||
{
|
||||
struct host1x_drm *host1x = drm->dev_private;
|
||||
|
||||
drm_fbdev_cma_fini(host1x->fbdev);
|
||||
tegra_fbdev_free(host1x->fbdev);
|
||||
}
|
||||
|
||||
void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev)
|
||||
{
|
||||
if (fbdev) {
|
||||
drm_modeset_lock_all(fbdev->base.dev);
|
||||
drm_fb_helper_restore_fbdev_mode(&fbdev->base);
|
||||
drm_modeset_unlock_all(fbdev->base.dev);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,270 @@
|
|||
/*
|
||||
* NVIDIA Tegra DRM GEM helper functions
|
||||
*
|
||||
* Copyright (C) 2012 Sascha Hauer, Pengutronix
|
||||
* Copyright (C) 2013 NVIDIA CORPORATION, All rights reserved.
|
||||
*
|
||||
* Based on the GEM/CMA helpers
|
||||
*
|
||||
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License
|
||||
* as published by the Free Software Foundation; either version 2
|
||||
* of the License, or (at your option) any later version.
|
||||
* This program is distributed in the hope that 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.
|
||||
*/
|
||||
|
||||
#include <linux/mm.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/export.h>
|
||||
#include <linux/dma-mapping.h>
|
||||
|
||||
#include <drm/drmP.h>
|
||||
#include <drm/drm.h>
|
||||
|
||||
#include "gem.h"
|
||||
|
||||
static inline struct tegra_bo *host1x_to_drm_bo(struct host1x_bo *bo)
|
||||
{
|
||||
return container_of(bo, struct tegra_bo, base);
|
||||
}
|
||||
|
||||
static void tegra_bo_put(struct host1x_bo *bo)
|
||||
{
|
||||
struct tegra_bo *obj = host1x_to_drm_bo(bo);
|
||||
struct drm_device *drm = obj->gem.dev;
|
||||
|
||||
mutex_lock(&drm->struct_mutex);
|
||||
drm_gem_object_unreference(&obj->gem);
|
||||
mutex_unlock(&drm->struct_mutex);
|
||||
}
|
||||
|
||||
static dma_addr_t tegra_bo_pin(struct host1x_bo *bo, struct sg_table **sgt)
|
||||
{
|
||||
struct tegra_bo *obj = host1x_to_drm_bo(bo);
|
||||
|
||||
return obj->paddr;
|
||||
}
|
||||
|
||||
static void tegra_bo_unpin(struct host1x_bo *bo, struct sg_table *sgt)
|
||||
{
|
||||
}
|
||||
|
||||
static void *tegra_bo_mmap(struct host1x_bo *bo)
|
||||
{
|
||||
struct tegra_bo *obj = host1x_to_drm_bo(bo);
|
||||
|
||||
return obj->vaddr;
|
||||
}
|
||||
|
||||
static void tegra_bo_munmap(struct host1x_bo *bo, void *addr)
|
||||
{
|
||||
}
|
||||
|
||||
static void *tegra_bo_kmap(struct host1x_bo *bo, unsigned int page)
|
||||
{
|
||||
struct tegra_bo *obj = host1x_to_drm_bo(bo);
|
||||
|
||||
return obj->vaddr + page * PAGE_SIZE;
|
||||
}
|
||||
|
||||
static void tegra_bo_kunmap(struct host1x_bo *bo, unsigned int page,
|
||||
void *addr)
|
||||
{
|
||||
}
|
||||
|
||||
static struct host1x_bo *tegra_bo_get(struct host1x_bo *bo)
|
||||
{
|
||||
struct tegra_bo *obj = host1x_to_drm_bo(bo);
|
||||
struct drm_device *drm = obj->gem.dev;
|
||||
|
||||
mutex_lock(&drm->struct_mutex);
|
||||
drm_gem_object_reference(&obj->gem);
|
||||
mutex_unlock(&drm->struct_mutex);
|
||||
|
||||
return bo;
|
||||
}
|
||||
|
||||
const struct host1x_bo_ops tegra_bo_ops = {
|
||||
.get = tegra_bo_get,
|
||||
.put = tegra_bo_put,
|
||||
.pin = tegra_bo_pin,
|
||||
.unpin = tegra_bo_unpin,
|
||||
.mmap = tegra_bo_mmap,
|
||||
.munmap = tegra_bo_munmap,
|
||||
.kmap = tegra_bo_kmap,
|
||||
.kunmap = tegra_bo_kunmap,
|
||||
};
|
||||
|
||||
static void tegra_bo_destroy(struct drm_device *drm, struct tegra_bo *bo)
|
||||
{
|
||||
dma_free_writecombine(drm->dev, bo->gem.size, bo->vaddr, bo->paddr);
|
||||
}
|
||||
|
||||
unsigned int tegra_bo_get_mmap_offset(struct tegra_bo *bo)
|
||||
{
|
||||
return (unsigned int)bo->gem.map_list.hash.key << PAGE_SHIFT;
|
||||
}
|
||||
|
||||
struct tegra_bo *tegra_bo_create(struct drm_device *drm, unsigned int size)
|
||||
{
|
||||
struct tegra_bo *bo;
|
||||
int err;
|
||||
|
||||
bo = kzalloc(sizeof(*bo), GFP_KERNEL);
|
||||
if (!bo)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
host1x_bo_init(&bo->base, &tegra_bo_ops);
|
||||
size = round_up(size, PAGE_SIZE);
|
||||
|
||||
bo->vaddr = dma_alloc_writecombine(drm->dev, size, &bo->paddr,
|
||||
GFP_KERNEL | __GFP_NOWARN);
|
||||
if (!bo->vaddr) {
|
||||
dev_err(drm->dev, "failed to allocate buffer with size %u\n",
|
||||
size);
|
||||
err = -ENOMEM;
|
||||
goto err_dma;
|
||||
}
|
||||
|
||||
err = drm_gem_object_init(drm, &bo->gem, size);
|
||||
if (err)
|
||||
goto err_init;
|
||||
|
||||
err = drm_gem_create_mmap_offset(&bo->gem);
|
||||
if (err)
|
||||
goto err_mmap;
|
||||
|
||||
return bo;
|
||||
|
||||
err_mmap:
|
||||
drm_gem_object_release(&bo->gem);
|
||||
err_init:
|
||||
tegra_bo_destroy(drm, bo);
|
||||
err_dma:
|
||||
kfree(bo);
|
||||
|
||||
return ERR_PTR(err);
|
||||
|
||||
}
|
||||
|
||||
struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file,
|
||||
struct drm_device *drm,
|
||||
unsigned int size,
|
||||
unsigned int *handle)
|
||||
{
|
||||
struct tegra_bo *bo;
|
||||
int ret;
|
||||
|
||||
bo = tegra_bo_create(drm, size);
|
||||
if (IS_ERR(bo))
|
||||
return bo;
|
||||
|
||||
ret = drm_gem_handle_create(file, &bo->gem, handle);
|
||||
if (ret)
|
||||
goto err;
|
||||
|
||||
drm_gem_object_unreference_unlocked(&bo->gem);
|
||||
|
||||
return bo;
|
||||
|
||||
err:
|
||||
tegra_bo_free_object(&bo->gem);
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
void tegra_bo_free_object(struct drm_gem_object *gem)
|
||||
{
|
||||
struct tegra_bo *bo = to_tegra_bo(gem);
|
||||
|
||||
if (gem->map_list.map)
|
||||
drm_gem_free_mmap_offset(gem);
|
||||
|
||||
drm_gem_object_release(gem);
|
||||
tegra_bo_destroy(gem->dev, bo);
|
||||
|
||||
kfree(bo);
|
||||
}
|
||||
|
||||
int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm,
|
||||
struct drm_mode_create_dumb *args)
|
||||
{
|
||||
int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
|
||||
struct tegra_bo *bo;
|
||||
|
||||
if (args->pitch < min_pitch)
|
||||
args->pitch = min_pitch;
|
||||
|
||||
if (args->size < args->pitch * args->height)
|
||||
args->size = args->pitch * args->height;
|
||||
|
||||
bo = tegra_bo_create_with_handle(file, drm, args->size,
|
||||
&args->handle);
|
||||
if (IS_ERR(bo))
|
||||
return PTR_ERR(bo);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int tegra_bo_dumb_map_offset(struct drm_file *file, struct drm_device *drm,
|
||||
uint32_t handle, uint64_t *offset)
|
||||
{
|
||||
struct drm_gem_object *gem;
|
||||
struct tegra_bo *bo;
|
||||
|
||||
mutex_lock(&drm->struct_mutex);
|
||||
|
||||
gem = drm_gem_object_lookup(drm, file, handle);
|
||||
if (!gem) {
|
||||
dev_err(drm->dev, "failed to lookup GEM object\n");
|
||||
mutex_unlock(&drm->struct_mutex);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
bo = to_tegra_bo(gem);
|
||||
|
||||
*offset = tegra_bo_get_mmap_offset(bo);
|
||||
|
||||
drm_gem_object_unreference(gem);
|
||||
|
||||
mutex_unlock(&drm->struct_mutex);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
const struct vm_operations_struct tegra_bo_vm_ops = {
|
||||
.open = drm_gem_vm_open,
|
||||
.close = drm_gem_vm_close,
|
||||
};
|
||||
|
||||
int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma)
|
||||
{
|
||||
struct drm_gem_object *gem;
|
||||
struct tegra_bo *bo;
|
||||
int ret;
|
||||
|
||||
ret = drm_gem_mmap(file, vma);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
gem = vma->vm_private_data;
|
||||
bo = to_tegra_bo(gem);
|
||||
|
||||
ret = remap_pfn_range(vma, vma->vm_start, bo->paddr >> PAGE_SHIFT,
|
||||
vma->vm_end - vma->vm_start, vma->vm_page_prot);
|
||||
if (ret)
|
||||
drm_gem_vm_close(vma);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int tegra_bo_dumb_destroy(struct drm_file *file, struct drm_device *drm,
|
||||
unsigned int handle)
|
||||
{
|
||||
return drm_gem_handle_delete(file, handle);
|
||||
}
|
||||
|
|
@ -0,0 +1,59 @@
|
|||
/*
|
||||
* Tegra host1x GEM implementation
|
||||
*
|
||||
* Copyright (c) 2012-2013, NVIDIA Corporation.
|
||||
*
|
||||
* 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 <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifndef __HOST1X_GEM_H
|
||||
#define __HOST1X_GEM_H
|
||||
|
||||
#include <drm/drm.h>
|
||||
#include <drm/drmP.h>
|
||||
|
||||
#include "host1x_bo.h"
|
||||
|
||||
struct tegra_bo {
|
||||
struct drm_gem_object gem;
|
||||
struct host1x_bo base;
|
||||
dma_addr_t paddr;
|
||||
void *vaddr;
|
||||
};
|
||||
|
||||
static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem)
|
||||
{
|
||||
return container_of(gem, struct tegra_bo, gem);
|
||||
}
|
||||
|
||||
extern const struct host1x_bo_ops tegra_bo_ops;
|
||||
|
||||
struct tegra_bo *tegra_bo_create(struct drm_device *drm, unsigned int size);
|
||||
struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file,
|
||||
struct drm_device *drm,
|
||||
unsigned int size,
|
||||
unsigned int *handle);
|
||||
void tegra_bo_free_object(struct drm_gem_object *gem);
|
||||
unsigned int tegra_bo_get_mmap_offset(struct tegra_bo *bo);
|
||||
int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm,
|
||||
struct drm_mode_create_dumb *args);
|
||||
int tegra_bo_dumb_map_offset(struct drm_file *file, struct drm_device *drm,
|
||||
uint32_t handle, uint64_t *offset);
|
||||
int tegra_bo_dumb_destroy(struct drm_file *file, struct drm_device *drm,
|
||||
unsigned int handle);
|
||||
|
||||
int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma);
|
||||
|
||||
extern const struct vm_operations_struct tegra_bo_vm_ops;
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue