diff options
Diffstat (limited to 'kernel/drivers/gpu/drm/cirrus')
| -rw-r--r-- | kernel/drivers/gpu/drm/cirrus/Kconfig | 13 | ||||
| -rw-r--r-- | kernel/drivers/gpu/drm/cirrus/Makefile | 5 | ||||
| -rw-r--r-- | kernel/drivers/gpu/drm/cirrus/cirrus_drv.c | 186 | ||||
| -rw-r--r-- | kernel/drivers/gpu/drm/cirrus/cirrus_drv.h | 268 | ||||
| -rw-r--r-- | kernel/drivers/gpu/drm/cirrus/cirrus_fbdev.c | 341 | ||||
| -rw-r--r-- | kernel/drivers/gpu/drm/cirrus/cirrus_main.c | 335 | ||||
| -rw-r--r-- | kernel/drivers/gpu/drm/cirrus/cirrus_mode.c | 619 | ||||
| -rw-r--r-- | kernel/drivers/gpu/drm/cirrus/cirrus_ttm.c | 419 |
8 files changed, 2186 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/cirrus/Kconfig b/kernel/drivers/gpu/drm/cirrus/Kconfig new file mode 100644 index 000000000..9864559e5 --- /dev/null +++ b/kernel/drivers/gpu/drm/cirrus/Kconfig @@ -0,0 +1,13 @@ +config DRM_CIRRUS_QEMU + tristate "Cirrus driver for QEMU emulated device" + depends on DRM && PCI + select FB_SYS_FILLRECT + select FB_SYS_COPYAREA + select FB_SYS_IMAGEBLIT + select DRM_KMS_HELPER + select DRM_KMS_FB_HELPER + select DRM_TTM + help + This is a KMS driver for emulated cirrus device in qemu. + It is *NOT* intended for real cirrus devices. This requires + the modesetting userspace X.org driver. diff --git a/kernel/drivers/gpu/drm/cirrus/Makefile b/kernel/drivers/gpu/drm/cirrus/Makefile new file mode 100644 index 000000000..69ffe7006 --- /dev/null +++ b/kernel/drivers/gpu/drm/cirrus/Makefile @@ -0,0 +1,5 @@ +ccflags-y := -Iinclude/drm +cirrus-y := cirrus_main.o cirrus_mode.o \ + cirrus_drv.o cirrus_fbdev.o cirrus_ttm.o + +obj-$(CONFIG_DRM_CIRRUS_QEMU) += cirrus.o diff --git a/kernel/drivers/gpu/drm/cirrus/cirrus_drv.c b/kernel/drivers/gpu/drm/cirrus/cirrus_drv.c new file mode 100644 index 000000000..b91400329 --- /dev/null +++ b/kernel/drivers/gpu/drm/cirrus/cirrus_drv.c @@ -0,0 +1,186 @@ +/* + * Copyright 2012 Red Hat <mjg@redhat.com> + * + * This file is subject to the terms and conditions of the GNU General + * Public License version 2. See the file COPYING in the main + * directory of this archive for more details. + * + * Authors: Matthew Garrett + * Dave Airlie + */ +#include <linux/module.h> +#include <linux/console.h> +#include <drm/drmP.h> +#include <drm/drm_crtc_helper.h> + +#include "cirrus_drv.h" + +int cirrus_modeset = -1; +int cirrus_bpp = 24; + +MODULE_PARM_DESC(modeset, "Disable/Enable modesetting"); +module_param_named(modeset, cirrus_modeset, int, 0400); +MODULE_PARM_DESC(bpp, "Max bits-per-pixel (default:24)"); +module_param_named(bpp, cirrus_bpp, int, 0400); + +/* + * This is the generic driver code. This binds the driver to the drm core, + * which then performs further device association and calls our graphics init + * functions + */ + +static struct drm_driver driver; + +/* only bind to the cirrus chip in qemu */ +static const struct pci_device_id pciidlist[] = { + { PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, 0x1af4, 0x1100, 0, + 0, 0 }, + { PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, PCI_VENDOR_ID_XEN, + 0x0001, 0, 0, 0 }, + {0,} +}; + + +static int cirrus_kick_out_firmware_fb(struct pci_dev *pdev) +{ + struct apertures_struct *ap; + bool primary = false; + + ap = alloc_apertures(1); + if (!ap) + return -ENOMEM; + + ap->ranges[0].base = pci_resource_start(pdev, 0); + ap->ranges[0].size = pci_resource_len(pdev, 0); + +#ifdef CONFIG_X86 + primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW; +#endif + remove_conflicting_framebuffers(ap, "cirrusdrmfb", primary); + kfree(ap); + + return 0; +} + +static int cirrus_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + int ret; + + ret = cirrus_kick_out_firmware_fb(pdev); + if (ret) + return ret; + + return drm_get_pci_dev(pdev, ent, &driver); +} + +static void cirrus_pci_remove(struct pci_dev *pdev) +{ + struct drm_device *dev = pci_get_drvdata(pdev); + + drm_put_dev(dev); +} + +#ifdef CONFIG_PM_SLEEP +static int cirrus_pm_suspend(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct drm_device *drm_dev = pci_get_drvdata(pdev); + struct cirrus_device *cdev = drm_dev->dev_private; + + drm_kms_helper_poll_disable(drm_dev); + + if (cdev->mode_info.gfbdev) { + console_lock(); + fb_set_suspend(cdev->mode_info.gfbdev->helper.fbdev, 1); + console_unlock(); + } + + return 0; +} + +static int cirrus_pm_resume(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct drm_device *drm_dev = pci_get_drvdata(pdev); + struct cirrus_device *cdev = drm_dev->dev_private; + + drm_helper_resume_force_mode(drm_dev); + + if (cdev->mode_info.gfbdev) { + console_lock(); + fb_set_suspend(cdev->mode_info.gfbdev->helper.fbdev, 0); + console_unlock(); + } + + drm_kms_helper_poll_enable(drm_dev); + return 0; +} +#endif + +static const struct file_operations cirrus_driver_fops = { + .owner = THIS_MODULE, + .open = drm_open, + .release = drm_release, + .unlocked_ioctl = drm_ioctl, + .mmap = cirrus_mmap, + .poll = drm_poll, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif +}; +static struct drm_driver driver = { + .driver_features = DRIVER_MODESET | DRIVER_GEM, + .load = cirrus_driver_load, + .unload = cirrus_driver_unload, + .set_busid = drm_pci_set_busid, + .fops = &cirrus_driver_fops, + .name = DRIVER_NAME, + .desc = DRIVER_DESC, + .date = DRIVER_DATE, + .major = DRIVER_MAJOR, + .minor = DRIVER_MINOR, + .patchlevel = DRIVER_PATCHLEVEL, + .gem_free_object = cirrus_gem_free_object, + .dumb_create = cirrus_dumb_create, + .dumb_map_offset = cirrus_dumb_mmap_offset, + .dumb_destroy = drm_gem_dumb_destroy, +}; + +static const struct dev_pm_ops cirrus_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(cirrus_pm_suspend, + cirrus_pm_resume) +}; + +static struct pci_driver cirrus_pci_driver = { + .name = DRIVER_NAME, + .id_table = pciidlist, + .probe = cirrus_pci_probe, + .remove = cirrus_pci_remove, + .driver.pm = &cirrus_pm_ops, +}; + +static int __init cirrus_init(void) +{ +#ifdef CONFIG_VGA_CONSOLE + if (vgacon_text_force() && cirrus_modeset == -1) + return -EINVAL; +#endif + + if (cirrus_modeset == 0) + return -EINVAL; + return drm_pci_init(&driver, &cirrus_pci_driver); +} + +static void __exit cirrus_exit(void) +{ + drm_pci_exit(&driver, &cirrus_pci_driver); +} + +module_init(cirrus_init); +module_exit(cirrus_exit); + +MODULE_DEVICE_TABLE(pci, pciidlist); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); diff --git a/kernel/drivers/gpu/drm/cirrus/cirrus_drv.h b/kernel/drivers/gpu/drm/cirrus/cirrus_drv.h new file mode 100644 index 000000000..705061537 --- /dev/null +++ b/kernel/drivers/gpu/drm/cirrus/cirrus_drv.h @@ -0,0 +1,268 @@ +/* + * Copyright 2012 Red Hat + * + * This file is subject to the terms and conditions of the GNU General + * Public License version 2. See the file COPYING in the main + * directory of this archive for more details. + * + * Authors: Matthew Garrett + * Dave Airlie + */ +#ifndef __CIRRUS_DRV_H__ +#define __CIRRUS_DRV_H__ + +#include <video/vga.h> + +#include <drm/drm_fb_helper.h> + +#include <drm/ttm/ttm_bo_api.h> +#include <drm/ttm/ttm_bo_driver.h> +#include <drm/ttm/ttm_placement.h> +#include <drm/ttm/ttm_memory.h> +#include <drm/ttm/ttm_module.h> + +#include <drm/drm_gem.h> + +#define DRIVER_AUTHOR "Matthew Garrett" + +#define DRIVER_NAME "cirrus" +#define DRIVER_DESC "qemu Cirrus emulation" +#define DRIVER_DATE "20110418" + +#define DRIVER_MAJOR 1 +#define DRIVER_MINOR 0 +#define DRIVER_PATCHLEVEL 0 + +#define CIRRUSFB_CONN_LIMIT 1 + +#define RREG8(reg) ioread8(((void __iomem *)cdev->rmmio) + (reg)) +#define WREG8(reg, v) iowrite8(v, ((void __iomem *)cdev->rmmio) + (reg)) +#define RREG32(reg) ioread32(((void __iomem *)cdev->rmmio) + (reg)) +#define WREG32(reg, v) iowrite32(v, ((void __iomem *)cdev->rmmio) + (reg)) + +#define SEQ_INDEX 4 +#define SEQ_DATA 5 + +#define WREG_SEQ(reg, v) \ + do { \ + WREG8(SEQ_INDEX, reg); \ + WREG8(SEQ_DATA, v); \ + } while (0) \ + +#define CRT_INDEX 0x14 +#define CRT_DATA 0x15 + +#define WREG_CRT(reg, v) \ + do { \ + WREG8(CRT_INDEX, reg); \ + WREG8(CRT_DATA, v); \ + } while (0) \ + +#define GFX_INDEX 0xe +#define GFX_DATA 0xf + +#define WREG_GFX(reg, v) \ + do { \ + WREG8(GFX_INDEX, reg); \ + WREG8(GFX_DATA, v); \ + } while (0) \ + +/* + * Cirrus has a "hidden" DAC register that can be accessed by writing to + * the pixel mask register to reset the state, then reading from the register + * four times. The next write will then pass to the DAC + */ +#define VGA_DAC_MASK 0x6 + +#define WREG_HDR(v) \ + do { \ + RREG8(VGA_DAC_MASK); \ + RREG8(VGA_DAC_MASK); \ + RREG8(VGA_DAC_MASK); \ + RREG8(VGA_DAC_MASK); \ + WREG8(VGA_DAC_MASK, v); \ + } while (0) \ + + +#define CIRRUS_MAX_FB_HEIGHT 4096 +#define CIRRUS_MAX_FB_WIDTH 4096 + +#define CIRRUS_DPMS_CLEARED (-1) + +#define to_cirrus_crtc(x) container_of(x, struct cirrus_crtc, base) +#define to_cirrus_encoder(x) container_of(x, struct cirrus_encoder, base) +#define to_cirrus_framebuffer(x) container_of(x, struct cirrus_framebuffer, base) + +struct cirrus_crtc { + struct drm_crtc base; + u8 lut_r[256], lut_g[256], lut_b[256]; + int last_dpms; + bool enabled; +}; + +struct cirrus_fbdev; +struct cirrus_mode_info { + bool mode_config_initialized; + struct cirrus_crtc *crtc; + /* pointer to fbdev info structure */ + struct cirrus_fbdev *gfbdev; +}; + +struct cirrus_encoder { + struct drm_encoder base; + int last_dpms; +}; + +struct cirrus_connector { + struct drm_connector base; +}; + +struct cirrus_framebuffer { + struct drm_framebuffer base; + struct drm_gem_object *obj; +}; + +struct cirrus_mc { + resource_size_t vram_size; + resource_size_t vram_base; +}; + +struct cirrus_device { + struct drm_device *dev; + unsigned long flags; + + resource_size_t rmmio_base; + resource_size_t rmmio_size; + void __iomem *rmmio; + + struct cirrus_mc mc; + struct cirrus_mode_info mode_info; + + int num_crtc; + int fb_mtrr; + + struct { + struct drm_global_reference mem_global_ref; + struct ttm_bo_global_ref bo_global_ref; + struct ttm_bo_device bdev; + } ttm; + bool mm_inited; +}; + + +struct cirrus_fbdev { + struct drm_fb_helper helper; + struct cirrus_framebuffer gfb; + struct list_head fbdev_list; + void *sysram; + int size; + int x1, y1, x2, y2; /* dirty rect */ + spinlock_t dirty_lock; +}; + +struct cirrus_bo { + struct ttm_buffer_object bo; + struct ttm_placement placement; + struct ttm_bo_kmap_obj kmap; + struct drm_gem_object gem; + struct ttm_place placements[3]; + int pin_count; +}; +#define gem_to_cirrus_bo(gobj) container_of((gobj), struct cirrus_bo, gem) + +static inline struct cirrus_bo * +cirrus_bo(struct ttm_buffer_object *bo) +{ + return container_of(bo, struct cirrus_bo, bo); +} + + +#define to_cirrus_obj(x) container_of(x, struct cirrus_gem_object, base) +#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT) + + /* cirrus_mode.c */ +void cirrus_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, + u16 blue, int regno); +void cirrus_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, + u16 *blue, int regno); + + + /* cirrus_main.c */ +int cirrus_device_init(struct cirrus_device *cdev, + struct drm_device *ddev, + struct pci_dev *pdev, + uint32_t flags); +void cirrus_device_fini(struct cirrus_device *cdev); +void cirrus_gem_free_object(struct drm_gem_object *obj); +int cirrus_dumb_mmap_offset(struct drm_file *file, + struct drm_device *dev, + uint32_t handle, + uint64_t *offset); +int cirrus_gem_create(struct drm_device *dev, + u32 size, bool iskernel, + struct drm_gem_object **obj); +int cirrus_dumb_create(struct drm_file *file, + struct drm_device *dev, + struct drm_mode_create_dumb *args); + +int cirrus_framebuffer_init(struct drm_device *dev, + struct cirrus_framebuffer *gfb, + struct drm_mode_fb_cmd2 *mode_cmd, + struct drm_gem_object *obj); + +bool cirrus_check_framebuffer(struct cirrus_device *cdev, int width, int height, + int bpp, int pitch); + + /* cirrus_display.c */ +int cirrus_modeset_init(struct cirrus_device *cdev); +void cirrus_modeset_fini(struct cirrus_device *cdev); + + /* cirrus_fbdev.c */ +int cirrus_fbdev_init(struct cirrus_device *cdev); +void cirrus_fbdev_fini(struct cirrus_device *cdev); + + + + /* cirrus_irq.c */ +void cirrus_driver_irq_preinstall(struct drm_device *dev); +int cirrus_driver_irq_postinstall(struct drm_device *dev); +void cirrus_driver_irq_uninstall(struct drm_device *dev); +irqreturn_t cirrus_driver_irq_handler(int irq, void *arg); + + /* cirrus_kms.c */ +int cirrus_driver_load(struct drm_device *dev, unsigned long flags); +int cirrus_driver_unload(struct drm_device *dev); +extern struct drm_ioctl_desc cirrus_ioctls[]; +extern int cirrus_max_ioctl; + +int cirrus_mm_init(struct cirrus_device *cirrus); +void cirrus_mm_fini(struct cirrus_device *cirrus); +void cirrus_ttm_placement(struct cirrus_bo *bo, int domain); +int cirrus_bo_create(struct drm_device *dev, int size, int align, + uint32_t flags, struct cirrus_bo **pcirrusbo); +int cirrus_mmap(struct file *filp, struct vm_area_struct *vma); + +static inline int cirrus_bo_reserve(struct cirrus_bo *bo, bool no_wait) +{ + int ret; + + ret = ttm_bo_reserve(&bo->bo, true, no_wait, false, NULL); + if (ret) { + if (ret != -ERESTARTSYS && ret != -EBUSY) + DRM_ERROR("reserve failed %p\n", bo); + return ret; + } + return 0; +} + +static inline void cirrus_bo_unreserve(struct cirrus_bo *bo) +{ + ttm_bo_unreserve(&bo->bo); +} + +int cirrus_bo_push_sysram(struct cirrus_bo *bo); +int cirrus_bo_pin(struct cirrus_bo *bo, u32 pl_flag, u64 *gpu_addr); + +extern int cirrus_bpp; + +#endif /* __CIRRUS_DRV_H__ */ diff --git a/kernel/drivers/gpu/drm/cirrus/cirrus_fbdev.c b/kernel/drivers/gpu/drm/cirrus/cirrus_fbdev.c new file mode 100644 index 000000000..13ddf1c4b --- /dev/null +++ b/kernel/drivers/gpu/drm/cirrus/cirrus_fbdev.c @@ -0,0 +1,341 @@ +/* + * Copyright 2012 Red Hat + * + * This file is subject to the terms and conditions of the GNU General + * Public License version 2. See the file COPYING in the main + * directory of this archive for more details. + * + * Authors: Matthew Garrett + * Dave Airlie + */ +#include <linux/module.h> +#include <drm/drmP.h> +#include <drm/drm_fb_helper.h> +#include <drm/drm_crtc_helper.h> + +#include <linux/fb.h> + +#include "cirrus_drv.h" + +static void cirrus_dirty_update(struct cirrus_fbdev *afbdev, + int x, int y, int width, int height) +{ + int i; + struct drm_gem_object *obj; + struct cirrus_bo *bo; + int src_offset, dst_offset; + int bpp = (afbdev->gfb.base.bits_per_pixel + 7)/8; + int ret = -EBUSY; + bool unmap = false; + bool store_for_later = false; + int x2, y2; + unsigned long flags; + + obj = afbdev->gfb.obj; + bo = gem_to_cirrus_bo(obj); + + /* + * try and reserve the BO, if we fail with busy + * then the BO is being moved and we should + * store up the damage until later. + */ + if (drm_can_sleep()) + ret = cirrus_bo_reserve(bo, true); + if (ret) { + if (ret != -EBUSY) + return; + store_for_later = true; + } + + x2 = x + width - 1; + y2 = y + height - 1; + spin_lock_irqsave(&afbdev->dirty_lock, flags); + + if (afbdev->y1 < y) + y = afbdev->y1; + if (afbdev->y2 > y2) + y2 = afbdev->y2; + if (afbdev->x1 < x) + x = afbdev->x1; + if (afbdev->x2 > x2) + x2 = afbdev->x2; + + if (store_for_later) { + afbdev->x1 = x; + afbdev->x2 = x2; + afbdev->y1 = y; + afbdev->y2 = y2; + spin_unlock_irqrestore(&afbdev->dirty_lock, flags); + return; + } + + afbdev->x1 = afbdev->y1 = INT_MAX; + afbdev->x2 = afbdev->y2 = 0; + spin_unlock_irqrestore(&afbdev->dirty_lock, flags); + + if (!bo->kmap.virtual) { + ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap); + if (ret) { + DRM_ERROR("failed to kmap fb updates\n"); + cirrus_bo_unreserve(bo); + return; + } + unmap = true; + } + for (i = y; i < y + height; i++) { + /* assume equal stride for now */ + src_offset = dst_offset = i * afbdev->gfb.base.pitches[0] + (x * bpp); + memcpy_toio(bo->kmap.virtual + src_offset, afbdev->sysram + src_offset, width * bpp); + + } + if (unmap) + ttm_bo_kunmap(&bo->kmap); + + cirrus_bo_unreserve(bo); +} + +static void cirrus_fillrect(struct fb_info *info, + const struct fb_fillrect *rect) +{ + struct cirrus_fbdev *afbdev = info->par; + sys_fillrect(info, rect); + cirrus_dirty_update(afbdev, rect->dx, rect->dy, rect->width, + rect->height); +} + +static void cirrus_copyarea(struct fb_info *info, + const struct fb_copyarea *area) +{ + struct cirrus_fbdev *afbdev = info->par; + sys_copyarea(info, area); + cirrus_dirty_update(afbdev, area->dx, area->dy, area->width, + area->height); +} + +static void cirrus_imageblit(struct fb_info *info, + const struct fb_image *image) +{ + struct cirrus_fbdev *afbdev = info->par; + sys_imageblit(info, image); + cirrus_dirty_update(afbdev, image->dx, image->dy, image->width, + image->height); +} + + +static struct fb_ops cirrusfb_ops = { + .owner = THIS_MODULE, + .fb_check_var = drm_fb_helper_check_var, + .fb_set_par = drm_fb_helper_set_par, + .fb_fillrect = cirrus_fillrect, + .fb_copyarea = cirrus_copyarea, + .fb_imageblit = cirrus_imageblit, + .fb_pan_display = drm_fb_helper_pan_display, + .fb_blank = drm_fb_helper_blank, + .fb_setcmap = drm_fb_helper_setcmap, +}; + +static int cirrusfb_create_object(struct cirrus_fbdev *afbdev, + struct drm_mode_fb_cmd2 *mode_cmd, + struct drm_gem_object **gobj_p) +{ + struct drm_device *dev = afbdev->helper.dev; + struct cirrus_device *cdev = dev->dev_private; + u32 bpp, depth; + u32 size; + struct drm_gem_object *gobj; + + int ret = 0; + drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp); + + if (!cirrus_check_framebuffer(cdev, mode_cmd->width, mode_cmd->height, + bpp, mode_cmd->pitches[0])) + return -EINVAL; + + size = mode_cmd->pitches[0] * mode_cmd->height; + ret = cirrus_gem_create(dev, size, true, &gobj); + if (ret) + return ret; + + *gobj_p = gobj; + return ret; +} + +static int cirrusfb_create(struct drm_fb_helper *helper, + struct drm_fb_helper_surface_size *sizes) +{ + struct cirrus_fbdev *gfbdev = + container_of(helper, struct cirrus_fbdev, helper); + struct drm_device *dev = gfbdev->helper.dev; + struct cirrus_device *cdev = gfbdev->helper.dev->dev_private; + struct fb_info *info; + struct drm_framebuffer *fb; + struct drm_mode_fb_cmd2 mode_cmd; + struct device *device = &dev->pdev->dev; + void *sysram; + struct drm_gem_object *gobj = NULL; + struct cirrus_bo *bo = NULL; + int size, ret; + + mode_cmd.width = sizes->surface_width; + mode_cmd.height = sizes->surface_height; + mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7) / 8); + mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, + sizes->surface_depth); + size = mode_cmd.pitches[0] * mode_cmd.height; + + ret = cirrusfb_create_object(gfbdev, &mode_cmd, &gobj); + if (ret) { + DRM_ERROR("failed to create fbcon backing object %d\n", ret); + return ret; + } + + bo = gem_to_cirrus_bo(gobj); + + sysram = vmalloc(size); + if (!sysram) + return -ENOMEM; + + info = framebuffer_alloc(0, device); + if (info == NULL) + return -ENOMEM; + + info->par = gfbdev; + + ret = cirrus_framebuffer_init(cdev->dev, &gfbdev->gfb, &mode_cmd, gobj); + if (ret) + return ret; + + gfbdev->sysram = sysram; + gfbdev->size = size; + + fb = &gfbdev->gfb.base; + if (!fb) { + DRM_INFO("fb is NULL\n"); + return -EINVAL; + } + + /* setup helper */ + gfbdev->helper.fb = fb; + gfbdev->helper.fbdev = info; + + strcpy(info->fix.id, "cirrusdrmfb"); + + + info->flags = FBINFO_DEFAULT; + info->fbops = &cirrusfb_ops; + + drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); + drm_fb_helper_fill_var(info, &gfbdev->helper, sizes->fb_width, + sizes->fb_height); + + /* setup aperture base/size for vesafb takeover */ + info->apertures = alloc_apertures(1); + if (!info->apertures) { + ret = -ENOMEM; + goto out_iounmap; + } + info->apertures->ranges[0].base = cdev->dev->mode_config.fb_base; + info->apertures->ranges[0].size = cdev->mc.vram_size; + + info->fix.smem_start = cdev->dev->mode_config.fb_base; + info->fix.smem_len = cdev->mc.vram_size; + + info->screen_base = sysram; + info->screen_size = size; + + info->fix.mmio_start = 0; + info->fix.mmio_len = 0; + + ret = fb_alloc_cmap(&info->cmap, 256, 0); + if (ret) { + DRM_ERROR("%s: can't allocate color map\n", info->fix.id); + ret = -ENOMEM; + goto out_iounmap; + } + + DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start); + DRM_INFO("vram aper at 0x%lX\n", (unsigned long)info->fix.smem_start); + DRM_INFO("size %lu\n", (unsigned long)info->fix.smem_len); + DRM_INFO("fb depth is %d\n", fb->depth); + DRM_INFO(" pitch is %d\n", fb->pitches[0]); + + return 0; +out_iounmap: + return ret; +} + +static int cirrus_fbdev_destroy(struct drm_device *dev, + struct cirrus_fbdev *gfbdev) +{ + struct fb_info *info; + struct cirrus_framebuffer *gfb = &gfbdev->gfb; + + if (gfbdev->helper.fbdev) { + info = gfbdev->helper.fbdev; + + unregister_framebuffer(info); + if (info->cmap.len) + fb_dealloc_cmap(&info->cmap); + framebuffer_release(info); + } + + if (gfb->obj) { + drm_gem_object_unreference_unlocked(gfb->obj); + gfb->obj = NULL; + } + + vfree(gfbdev->sysram); + drm_fb_helper_fini(&gfbdev->helper); + drm_framebuffer_unregister_private(&gfb->base); + drm_framebuffer_cleanup(&gfb->base); + + return 0; +} + +static const struct drm_fb_helper_funcs cirrus_fb_helper_funcs = { + .gamma_set = cirrus_crtc_fb_gamma_set, + .gamma_get = cirrus_crtc_fb_gamma_get, + .fb_probe = cirrusfb_create, +}; + +int cirrus_fbdev_init(struct cirrus_device *cdev) +{ + struct cirrus_fbdev *gfbdev; + int ret; + int bpp_sel = 24; + + /*bpp_sel = 8;*/ + gfbdev = kzalloc(sizeof(struct cirrus_fbdev), GFP_KERNEL); + if (!gfbdev) + return -ENOMEM; + + cdev->mode_info.gfbdev = gfbdev; + spin_lock_init(&gfbdev->dirty_lock); + + drm_fb_helper_prepare(cdev->dev, &gfbdev->helper, + &cirrus_fb_helper_funcs); + + ret = drm_fb_helper_init(cdev->dev, &gfbdev->helper, + cdev->num_crtc, CIRRUSFB_CONN_LIMIT); + if (ret) + return ret; + + ret = drm_fb_helper_single_add_all_connectors(&gfbdev->helper); + if (ret) + return ret; + + /* disable all the possible outputs/crtcs before entering KMS mode */ + drm_helper_disable_unused_functions(cdev->dev); + + return drm_fb_helper_initial_config(&gfbdev->helper, bpp_sel); +} + +void cirrus_fbdev_fini(struct cirrus_device *cdev) +{ + if (!cdev->mode_info.gfbdev) + return; + + cirrus_fbdev_destroy(cdev->dev, cdev->mode_info.gfbdev); + kfree(cdev->mode_info.gfbdev); + cdev->mode_info.gfbdev = NULL; +} diff --git a/kernel/drivers/gpu/drm/cirrus/cirrus_main.c b/kernel/drivers/gpu/drm/cirrus/cirrus_main.c new file mode 100644 index 000000000..e4b976658 --- /dev/null +++ b/kernel/drivers/gpu/drm/cirrus/cirrus_main.c @@ -0,0 +1,335 @@ +/* + * Copyright 2012 Red Hat + * + * This file is subject to the terms and conditions of the GNU General + * Public License version 2. See the file COPYING in the main + * directory of this archive for more details. + * + * Authors: Matthew Garrett + * Dave Airlie + */ +#include <drm/drmP.h> +#include <drm/drm_crtc_helper.h> + +#include "cirrus_drv.h" + + +static void cirrus_user_framebuffer_destroy(struct drm_framebuffer *fb) +{ + struct cirrus_framebuffer *cirrus_fb = to_cirrus_framebuffer(fb); + if (cirrus_fb->obj) + drm_gem_object_unreference_unlocked(cirrus_fb->obj); + drm_framebuffer_cleanup(fb); + kfree(fb); +} + +static const struct drm_framebuffer_funcs cirrus_fb_funcs = { + .destroy = cirrus_user_framebuffer_destroy, +}; + +int cirrus_framebuffer_init(struct drm_device *dev, + struct cirrus_framebuffer *gfb, + struct drm_mode_fb_cmd2 *mode_cmd, + struct drm_gem_object *obj) +{ + int ret; + + drm_helper_mode_fill_fb_struct(&gfb->base, mode_cmd); + gfb->obj = obj; + ret = drm_framebuffer_init(dev, &gfb->base, &cirrus_fb_funcs); + if (ret) { + DRM_ERROR("drm_framebuffer_init failed: %d\n", ret); + return ret; + } + return 0; +} + +static struct drm_framebuffer * +cirrus_user_framebuffer_create(struct drm_device *dev, + struct drm_file *filp, + struct drm_mode_fb_cmd2 *mode_cmd) +{ + struct cirrus_device *cdev = dev->dev_private; + struct drm_gem_object *obj; + struct cirrus_framebuffer *cirrus_fb; + int ret; + u32 bpp, depth; + + drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp); + + if (!cirrus_check_framebuffer(cdev, mode_cmd->width, mode_cmd->height, + bpp, mode_cmd->pitches[0])) + return ERR_PTR(-EINVAL); + + obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]); + if (obj == NULL) + return ERR_PTR(-ENOENT); + + cirrus_fb = kzalloc(sizeof(*cirrus_fb), GFP_KERNEL); + if (!cirrus_fb) { + drm_gem_object_unreference_unlocked(obj); + return ERR_PTR(-ENOMEM); + } + + ret = cirrus_framebuffer_init(dev, cirrus_fb, mode_cmd, obj); + if (ret) { + drm_gem_object_unreference_unlocked(obj); + kfree(cirrus_fb); + return ERR_PTR(ret); + } + return &cirrus_fb->base; +} + +static const struct drm_mode_config_funcs cirrus_mode_funcs = { + .fb_create = cirrus_user_framebuffer_create, +}; + +/* Unmap the framebuffer from the core and release the memory */ +static void cirrus_vram_fini(struct cirrus_device *cdev) +{ + iounmap(cdev->rmmio); + cdev->rmmio = NULL; + if (cdev->mc.vram_base) + release_mem_region(cdev->mc.vram_base, cdev->mc.vram_size); +} + +/* Map the framebuffer from the card and configure the core */ +static int cirrus_vram_init(struct cirrus_device *cdev) +{ + /* BAR 0 is VRAM */ + cdev->mc.vram_base = pci_resource_start(cdev->dev->pdev, 0); + cdev->mc.vram_size = pci_resource_len(cdev->dev->pdev, 0); + + if (!request_mem_region(cdev->mc.vram_base, cdev->mc.vram_size, + "cirrusdrmfb_vram")) { + DRM_ERROR("can't reserve VRAM\n"); + return -ENXIO; + } + + return 0; +} + +/* + * Our emulated hardware has two sets of memory. One is video RAM and can + * simply be used as a linear framebuffer - the other provides mmio access + * to the display registers. The latter can also be accessed via IO port + * access, but we map the range and use mmio to program them instead + */ + +int cirrus_device_init(struct cirrus_device *cdev, + struct drm_device *ddev, + struct pci_dev *pdev, uint32_t flags) +{ + int ret; + + cdev->dev = ddev; + cdev->flags = flags; + + /* Hardcode the number of CRTCs to 1 */ + cdev->num_crtc = 1; + + /* BAR 0 is the framebuffer, BAR 1 contains registers */ + cdev->rmmio_base = pci_resource_start(cdev->dev->pdev, 1); + cdev->rmmio_size = pci_resource_len(cdev->dev->pdev, 1); + + if (!request_mem_region(cdev->rmmio_base, cdev->rmmio_size, + "cirrusdrmfb_mmio")) { + DRM_ERROR("can't reserve mmio registers\n"); + return -ENOMEM; + } + + cdev->rmmio = ioremap(cdev->rmmio_base, cdev->rmmio_size); + + if (cdev->rmmio == NULL) + return -ENOMEM; + + ret = cirrus_vram_init(cdev); + if (ret) { + release_mem_region(cdev->rmmio_base, cdev->rmmio_size); + return ret; + } + + return 0; +} + +void cirrus_device_fini(struct cirrus_device *cdev) +{ + release_mem_region(cdev->rmmio_base, cdev->rmmio_size); + cirrus_vram_fini(cdev); +} + +/* + * Functions here will be called by the core once it's bound the driver to + * a PCI device + */ + +int cirrus_driver_load(struct drm_device *dev, unsigned long flags) +{ + struct cirrus_device *cdev; + int r; + + cdev = kzalloc(sizeof(struct cirrus_device), GFP_KERNEL); + if (cdev == NULL) + return -ENOMEM; + dev->dev_private = (void *)cdev; + + r = cirrus_device_init(cdev, dev, dev->pdev, flags); + if (r) { + dev_err(&dev->pdev->dev, "Fatal error during GPU init: %d\n", r); + goto out; + } + + r = cirrus_mm_init(cdev); + if (r) { + dev_err(&dev->pdev->dev, "fatal err on mm init\n"); + goto out; + } + + r = cirrus_modeset_init(cdev); + if (r) { + dev_err(&dev->pdev->dev, "Fatal error during modeset init: %d\n", r); + goto out; + } + + dev->mode_config.funcs = (void *)&cirrus_mode_funcs; + + return 0; +out: + cirrus_driver_unload(dev); + return r; +} + +int cirrus_driver_unload(struct drm_device *dev) +{ + struct cirrus_device *cdev = dev->dev_private; + + if (cdev == NULL) + return 0; + cirrus_modeset_fini(cdev); + cirrus_mm_fini(cdev); + cirrus_device_fini(cdev); + kfree(cdev); + dev->dev_private = NULL; + return 0; +} + +int cirrus_gem_create(struct drm_device *dev, + u32 size, bool iskernel, + struct drm_gem_object **obj) +{ + struct cirrus_bo *cirrusbo; + int ret; + + *obj = NULL; + + size = roundup(size, PAGE_SIZE); + if (size == 0) + return -EINVAL; + + ret = cirrus_bo_create(dev, size, 0, 0, &cirrusbo); + if (ret) { + if (ret != -ERESTARTSYS) + DRM_ERROR("failed to allocate GEM object\n"); + return ret; + } + *obj = &cirrusbo->gem; + return 0; +} + +int cirrus_dumb_create(struct drm_file *file, + struct drm_device *dev, + struct drm_mode_create_dumb *args) +{ + int ret; + struct drm_gem_object *gobj; + u32 handle; + + args->pitch = args->width * ((args->bpp + 7) / 8); + args->size = args->pitch * args->height; + + ret = cirrus_gem_create(dev, args->size, false, + &gobj); + if (ret) + return ret; + + ret = drm_gem_handle_create(file, gobj, &handle); + drm_gem_object_unreference_unlocked(gobj); + if (ret) + return ret; + + args->handle = handle; + return 0; +} + +static void cirrus_bo_unref(struct cirrus_bo **bo) +{ + struct ttm_buffer_object *tbo; + + if ((*bo) == NULL) + return; + + tbo = &((*bo)->bo); + ttm_bo_unref(&tbo); + *bo = NULL; +} + +void cirrus_gem_free_object(struct drm_gem_object *obj) +{ + struct cirrus_bo *cirrus_bo = gem_to_cirrus_bo(obj); + + cirrus_bo_unref(&cirrus_bo); +} + + +static inline u64 cirrus_bo_mmap_offset(struct cirrus_bo *bo) +{ + return drm_vma_node_offset_addr(&bo->bo.vma_node); +} + +int +cirrus_dumb_mmap_offset(struct drm_file *file, + struct drm_device *dev, + uint32_t handle, + uint64_t *offset) +{ + struct drm_gem_object *obj; + int ret; + struct cirrus_bo *bo; + + mutex_lock(&dev->struct_mutex); + obj = drm_gem_object_lookup(dev, file, handle); + if (obj == NULL) { + ret = -ENOENT; + goto out_unlock; + } + + bo = gem_to_cirrus_bo(obj); + *offset = cirrus_bo_mmap_offset(bo); + + drm_gem_object_unreference(obj); + ret = 0; +out_unlock: + mutex_unlock(&dev->struct_mutex); + return ret; + +} + +bool cirrus_check_framebuffer(struct cirrus_device *cdev, int width, int height, + int bpp, int pitch) +{ + const int max_pitch = 0x1FF << 3; /* (4096 - 1) & ~111b bytes */ + const int max_size = cdev->mc.vram_size; + + if (bpp > cirrus_bpp) + return false; + if (bpp > 32) + return false; + + if (pitch > max_pitch) + return false; + + if (pitch * height > max_size) + return false; + + return true; +} diff --git a/kernel/drivers/gpu/drm/cirrus/cirrus_mode.c b/kernel/drivers/gpu/drm/cirrus/cirrus_mode.c new file mode 100644 index 000000000..61385f229 --- /dev/null +++ b/kernel/drivers/gpu/drm/cirrus/cirrus_mode.c @@ -0,0 +1,619 @@ + +/* + * Copyright 2012 Red Hat + * + * This file is subject to the terms and conditions of the GNU General + * Public License version 2. See the file COPYING in the main + * directory of this archive for more details. + * + * Authors: Matthew Garrett + * Dave Airlie + * + * Portions of this code derived from cirrusfb.c: + * drivers/video/cirrusfb.c - driver for Cirrus Logic chipsets + * + * Copyright 1999-2001 Jeff Garzik <jgarzik@pobox.com> + */ +#include <drm/drmP.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_plane_helper.h> + +#include <video/cirrus.h> + +#include "cirrus_drv.h" + +#define CIRRUS_LUT_SIZE 256 + +#define PALETTE_INDEX 0x8 +#define PALETTE_DATA 0x9 + +/* + * This file contains setup code for the CRTC. + */ + +static void cirrus_crtc_load_lut(struct drm_crtc *crtc) +{ + struct cirrus_crtc *cirrus_crtc = to_cirrus_crtc(crtc); + struct drm_device *dev = crtc->dev; + struct cirrus_device *cdev = dev->dev_private; + int i; + + if (!crtc->enabled) + return; + + for (i = 0; i < CIRRUS_LUT_SIZE; i++) { + /* VGA registers */ + WREG8(PALETTE_INDEX, i); + WREG8(PALETTE_DATA, cirrus_crtc->lut_r[i]); + WREG8(PALETTE_DATA, cirrus_crtc->lut_g[i]); + WREG8(PALETTE_DATA, cirrus_crtc->lut_b[i]); + } +} + +/* + * The DRM core requires DPMS functions, but they make little sense in our + * case and so are just stubs + */ + +static void cirrus_crtc_dpms(struct drm_crtc *crtc, int mode) +{ + struct drm_device *dev = crtc->dev; + struct cirrus_device *cdev = dev->dev_private; + u8 sr01, gr0e; + + switch (mode) { + case DRM_MODE_DPMS_ON: + sr01 = 0x00; + gr0e = 0x00; + break; + case DRM_MODE_DPMS_STANDBY: + sr01 = 0x20; + gr0e = 0x02; + break; + case DRM_MODE_DPMS_SUSPEND: + sr01 = 0x20; + gr0e = 0x04; + break; + case DRM_MODE_DPMS_OFF: + sr01 = 0x20; + gr0e = 0x06; + break; + default: + return; + } + + WREG8(SEQ_INDEX, 0x1); + sr01 |= RREG8(SEQ_DATA) & ~0x20; + WREG_SEQ(0x1, sr01); + + WREG8(GFX_INDEX, 0xe); + gr0e |= RREG8(GFX_DATA) & ~0x06; + WREG_GFX(0xe, gr0e); +} + +/* + * The core passes the desired mode to the CRTC code to see whether any + * CRTC-specific modifications need to be made to it. We're in a position + * to just pass that straight through, so this does nothing + */ +static bool cirrus_crtc_mode_fixup(struct drm_crtc *crtc, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + return true; +} + +static void cirrus_set_start_address(struct drm_crtc *crtc, unsigned offset) +{ + struct cirrus_device *cdev = crtc->dev->dev_private; + u32 addr; + u8 tmp; + + addr = offset >> 2; + WREG_CRT(0x0c, (u8)((addr >> 8) & 0xff)); + WREG_CRT(0x0d, (u8)(addr & 0xff)); + + WREG8(CRT_INDEX, 0x1b); + tmp = RREG8(CRT_DATA); + tmp &= 0xf2; + tmp |= (addr >> 16) & 0x01; + tmp |= (addr >> 15) & 0x0c; + WREG_CRT(0x1b, tmp); + WREG8(CRT_INDEX, 0x1d); + tmp = RREG8(CRT_DATA); + tmp &= 0x7f; + tmp |= (addr >> 12) & 0x80; + WREG_CRT(0x1d, tmp); +} + +/* cirrus is different - we will force move buffers out of VRAM */ +static int cirrus_crtc_do_set_base(struct drm_crtc *crtc, + struct drm_framebuffer *fb, + int x, int y, int atomic) +{ + struct cirrus_device *cdev = crtc->dev->dev_private; + struct drm_gem_object *obj; + struct cirrus_framebuffer *cirrus_fb; + struct cirrus_bo *bo; + int ret; + u64 gpu_addr; + + /* push the previous fb to system ram */ + if (!atomic && fb) { + cirrus_fb = to_cirrus_framebuffer(fb); + obj = cirrus_fb->obj; + bo = gem_to_cirrus_bo(obj); + ret = cirrus_bo_reserve(bo, false); + if (ret) + return ret; + cirrus_bo_push_sysram(bo); + cirrus_bo_unreserve(bo); + } + + cirrus_fb = to_cirrus_framebuffer(crtc->primary->fb); + obj = cirrus_fb->obj; + bo = gem_to_cirrus_bo(obj); + + ret = cirrus_bo_reserve(bo, false); + if (ret) + return ret; + + ret = cirrus_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr); + if (ret) { + cirrus_bo_unreserve(bo); + return ret; + } + + if (&cdev->mode_info.gfbdev->gfb == cirrus_fb) { + /* if pushing console in kmap it */ + ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap); + if (ret) + DRM_ERROR("failed to kmap fbcon\n"); + } + cirrus_bo_unreserve(bo); + + cirrus_set_start_address(crtc, (u32)gpu_addr); + return 0; +} + +static int cirrus_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, + struct drm_framebuffer *old_fb) +{ + return cirrus_crtc_do_set_base(crtc, old_fb, x, y, 0); +} + +/* + * The meat of this driver. The core passes us a mode and we have to program + * it. The modesetting here is the bare minimum required to satisfy the qemu + * emulation of this hardware, and running this against a real device is + * likely to result in an inadequately programmed mode. We've already had + * the opportunity to modify the mode, so whatever we receive here should + * be something that can be correctly programmed and displayed + */ +static int cirrus_crtc_mode_set(struct drm_crtc *crtc, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode, + int x, int y, struct drm_framebuffer *old_fb) +{ + struct drm_device *dev = crtc->dev; + struct cirrus_device *cdev = dev->dev_private; + int hsyncstart, hsyncend, htotal, hdispend; + int vtotal, vdispend; + int tmp; + int sr07 = 0, hdr = 0; + + htotal = mode->htotal / 8; + hsyncend = mode->hsync_end / 8; + hsyncstart = mode->hsync_start / 8; + hdispend = mode->hdisplay / 8; + + vtotal = mode->vtotal; + vdispend = mode->vdisplay; + + vdispend -= 1; + vtotal -= 2; + + htotal -= 5; + hdispend -= 1; + hsyncstart += 1; + hsyncend += 1; + + WREG_CRT(VGA_CRTC_V_SYNC_END, 0x20); + WREG_CRT(VGA_CRTC_H_TOTAL, htotal); + WREG_CRT(VGA_CRTC_H_DISP, hdispend); + WREG_CRT(VGA_CRTC_H_SYNC_START, hsyncstart); + WREG_CRT(VGA_CRTC_H_SYNC_END, hsyncend); + WREG_CRT(VGA_CRTC_V_TOTAL, vtotal & 0xff); + WREG_CRT(VGA_CRTC_V_DISP_END, vdispend & 0xff); + + tmp = 0x40; + if ((vdispend + 1) & 512) + tmp |= 0x20; + WREG_CRT(VGA_CRTC_MAX_SCAN, tmp); + + /* + * Overflow bits for values that don't fit in the standard registers + */ + tmp = 16; + if (vtotal & 256) + tmp |= 1; + if (vdispend & 256) + tmp |= 2; + if ((vdispend + 1) & 256) + tmp |= 8; + if (vtotal & 512) + tmp |= 32; + if (vdispend & 512) + tmp |= 64; + WREG_CRT(VGA_CRTC_OVERFLOW, tmp); + + tmp = 0; + + /* More overflow bits */ + + if ((htotal + 5) & 64) + tmp |= 16; + if ((htotal + 5) & 128) + tmp |= 32; + if (vtotal & 256) + tmp |= 64; + if (vtotal & 512) + tmp |= 128; + + WREG_CRT(CL_CRT1A, tmp); + + /* Disable Hercules/CGA compatibility */ + WREG_CRT(VGA_CRTC_MODE, 0x03); + + WREG8(SEQ_INDEX, 0x7); + sr07 = RREG8(SEQ_DATA); + sr07 &= 0xe0; + hdr = 0; + switch (crtc->primary->fb->bits_per_pixel) { + case 8: + sr07 |= 0x11; + break; + case 16: + sr07 |= 0x17; + hdr = 0xc1; + break; + case 24: + sr07 |= 0x15; + hdr = 0xc5; + break; + case 32: + sr07 |= 0x19; + hdr = 0xc5; + break; + default: + return -1; + } + + WREG_SEQ(0x7, sr07); + + /* Program the pitch */ + tmp = crtc->primary->fb->pitches[0] / 8; + WREG_CRT(VGA_CRTC_OFFSET, tmp); + + /* Enable extended blanking and pitch bits, and enable full memory */ + tmp = 0x22; + tmp |= (crtc->primary->fb->pitches[0] >> 7) & 0x10; + tmp |= (crtc->primary->fb->pitches[0] >> 6) & 0x40; + WREG_CRT(0x1b, tmp); + + /* Enable high-colour modes */ + WREG_GFX(VGA_GFX_MODE, 0x40); + + /* And set graphics mode */ + WREG_GFX(VGA_GFX_MISC, 0x01); + + WREG_HDR(hdr); + cirrus_crtc_do_set_base(crtc, old_fb, x, y, 0); + + /* Unblank (needed on S3 resume, vgabios doesn't do it then) */ + outb(0x20, 0x3c0); + return 0; +} + +/* + * This is called before a mode is programmed. A typical use might be to + * enable DPMS during the programming to avoid seeing intermediate stages, + * but that's not relevant to us + */ +static void cirrus_crtc_prepare(struct drm_crtc *crtc) +{ +} + +/* + * This is called after a mode is programmed. It should reverse anything done + * by the prepare function + */ +static void cirrus_crtc_commit(struct drm_crtc *crtc) +{ +} + +/* + * The core can pass us a set of gamma values to program. We actually only + * use this for 8-bit mode so can't perform smooth fades on deeper modes, + * but it's a requirement that we provide the function + */ +static void cirrus_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green, + u16 *blue, uint32_t start, uint32_t size) +{ + struct cirrus_crtc *cirrus_crtc = to_cirrus_crtc(crtc); + int i; + + if (size != CIRRUS_LUT_SIZE) + return; + + for (i = 0; i < CIRRUS_LUT_SIZE; i++) { + cirrus_crtc->lut_r[i] = red[i]; + cirrus_crtc->lut_g[i] = green[i]; + cirrus_crtc->lut_b[i] = blue[i]; + } + cirrus_crtc_load_lut(crtc); +} + +/* Simple cleanup function */ +static void cirrus_crtc_destroy(struct drm_crtc *crtc) +{ + struct cirrus_crtc *cirrus_crtc = to_cirrus_crtc(crtc); + + drm_crtc_cleanup(crtc); + kfree(cirrus_crtc); +} + +/* These provide the minimum set of functions required to handle a CRTC */ +static const struct drm_crtc_funcs cirrus_crtc_funcs = { + .gamma_set = cirrus_crtc_gamma_set, + .set_config = drm_crtc_helper_set_config, + .destroy = cirrus_crtc_destroy, +}; + +static const struct drm_crtc_helper_funcs cirrus_helper_funcs = { + .dpms = cirrus_crtc_dpms, + .mode_fixup = cirrus_crtc_mode_fixup, + .mode_set = cirrus_crtc_mode_set, + .mode_set_base = cirrus_crtc_mode_set_base, + .prepare = cirrus_crtc_prepare, + .commit = cirrus_crtc_commit, + .load_lut = cirrus_crtc_load_lut, +}; + +/* CRTC setup */ +static void cirrus_crtc_init(struct drm_device *dev) +{ + struct cirrus_device *cdev = dev->dev_private; + struct cirrus_crtc *cirrus_crtc; + int i; + + cirrus_crtc = kzalloc(sizeof(struct cirrus_crtc) + + (CIRRUSFB_CONN_LIMIT * sizeof(struct drm_connector *)), + GFP_KERNEL); + + if (cirrus_crtc == NULL) + return; + + drm_crtc_init(dev, &cirrus_crtc->base, &cirrus_crtc_funcs); + + drm_mode_crtc_set_gamma_size(&cirrus_crtc->base, CIRRUS_LUT_SIZE); + cdev->mode_info.crtc = cirrus_crtc; + + for (i = 0; i < CIRRUS_LUT_SIZE; i++) { + cirrus_crtc->lut_r[i] = i; + cirrus_crtc->lut_g[i] = i; + cirrus_crtc->lut_b[i] = i; + } + + drm_crtc_helper_add(&cirrus_crtc->base, &cirrus_helper_funcs); +} + +/** Sets the color ramps on behalf of fbcon */ +void cirrus_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, + u16 blue, int regno) +{ + struct cirrus_crtc *cirrus_crtc = to_cirrus_crtc(crtc); + + cirrus_crtc->lut_r[regno] = red; + cirrus_crtc->lut_g[regno] = green; + cirrus_crtc->lut_b[regno] = blue; +} + +/** Gets the color ramps on behalf of fbcon */ +void cirrus_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, + u16 *blue, int regno) +{ + struct cirrus_crtc *cirrus_crtc = to_cirrus_crtc(crtc); + + *red = cirrus_crtc->lut_r[regno]; + *green = cirrus_crtc->lut_g[regno]; + *blue = cirrus_crtc->lut_b[regno]; +} + + +static bool cirrus_encoder_mode_fixup(struct drm_encoder *encoder, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + return true; +} + +static void cirrus_encoder_mode_set(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ +} + +static void cirrus_encoder_dpms(struct drm_encoder *encoder, int state) +{ + return; +} + +static void cirrus_encoder_prepare(struct drm_encoder *encoder) +{ +} + +static void cirrus_encoder_commit(struct drm_encoder *encoder) +{ +} + +static void cirrus_encoder_destroy(struct drm_encoder *encoder) +{ + struct cirrus_encoder *cirrus_encoder = to_cirrus_encoder(encoder); + drm_encoder_cleanup(encoder); + kfree(cirrus_encoder); +} + +static const struct drm_encoder_helper_funcs cirrus_encoder_helper_funcs = { + .dpms = cirrus_encoder_dpms, + .mode_fixup = cirrus_encoder_mode_fixup, + .mode_set = cirrus_encoder_mode_set, + .prepare = cirrus_encoder_prepare, + .commit = cirrus_encoder_commit, +}; + +static const struct drm_encoder_funcs cirrus_encoder_encoder_funcs = { + .destroy = cirrus_encoder_destroy, +}; + +static struct drm_encoder *cirrus_encoder_init(struct drm_device *dev) +{ + struct drm_encoder *encoder; + struct cirrus_encoder *cirrus_encoder; + + cirrus_encoder = kzalloc(sizeof(struct cirrus_encoder), GFP_KERNEL); + if (!cirrus_encoder) + return NULL; + + encoder = &cirrus_encoder->base; + encoder->possible_crtcs = 0x1; + + drm_encoder_init(dev, encoder, &cirrus_encoder_encoder_funcs, + DRM_MODE_ENCODER_DAC); + drm_encoder_helper_add(encoder, &cirrus_encoder_helper_funcs); + + return encoder; +} + + +static int cirrus_vga_get_modes(struct drm_connector *connector) +{ + int count; + + /* Just add a static list of modes */ + if (cirrus_bpp <= 24) { + count = drm_add_modes_noedid(connector, 1280, 1024); + drm_set_preferred_mode(connector, 1024, 768); + } else { + count = drm_add_modes_noedid(connector, 800, 600); + drm_set_preferred_mode(connector, 800, 600); + } + return count; +} + +static struct drm_encoder *cirrus_connector_best_encoder(struct drm_connector + *connector) +{ + int enc_id = connector->encoder_ids[0]; + /* pick the encoder ids */ + if (enc_id) + return drm_encoder_find(connector->dev, enc_id); + return NULL; +} + +static enum drm_connector_status cirrus_vga_detect(struct drm_connector + *connector, bool force) +{ + return connector_status_connected; +} + +static void cirrus_connector_destroy(struct drm_connector *connector) +{ + drm_connector_cleanup(connector); + kfree(connector); +} + +struct drm_connector_helper_funcs cirrus_vga_connector_helper_funcs = { + .get_modes = cirrus_vga_get_modes, + .best_encoder = cirrus_connector_best_encoder, +}; + +struct drm_connector_funcs cirrus_vga_connector_funcs = { + .dpms = drm_helper_connector_dpms, + .detect = cirrus_vga_detect, + .fill_modes = drm_helper_probe_single_connector_modes, + .destroy = cirrus_connector_destroy, +}; + +static struct drm_connector *cirrus_vga_init(struct drm_device *dev) +{ + struct drm_connector *connector; + struct cirrus_connector *cirrus_connector; + + cirrus_connector = kzalloc(sizeof(struct cirrus_connector), GFP_KERNEL); + if (!cirrus_connector) + return NULL; + + connector = &cirrus_connector->base; + + drm_connector_init(dev, connector, + &cirrus_vga_connector_funcs, DRM_MODE_CONNECTOR_VGA); + + drm_connector_helper_add(connector, &cirrus_vga_connector_helper_funcs); + + drm_connector_register(connector); + return connector; +} + + +int cirrus_modeset_init(struct cirrus_device *cdev) +{ + struct drm_encoder *encoder; + struct drm_connector *connector; + int ret; + + drm_mode_config_init(cdev->dev); + cdev->mode_info.mode_config_initialized = true; + + cdev->dev->mode_config.max_width = CIRRUS_MAX_FB_WIDTH; + cdev->dev->mode_config.max_height = CIRRUS_MAX_FB_HEIGHT; + + cdev->dev->mode_config.fb_base = cdev->mc.vram_base; + cdev->dev->mode_config.preferred_depth = 24; + /* don't prefer a shadow on virt GPU */ + cdev->dev->mode_config.prefer_shadow = 0; + + cirrus_crtc_init(cdev->dev); + + encoder = cirrus_encoder_init(cdev->dev); + if (!encoder) { + DRM_ERROR("cirrus_encoder_init failed\n"); + return -1; + } + + connector = cirrus_vga_init(cdev->dev); + if (!connector) { + DRM_ERROR("cirrus_vga_init failed\n"); + return -1; + } + + drm_mode_connector_attach_encoder(connector, encoder); + + ret = cirrus_fbdev_init(cdev); + if (ret) { + DRM_ERROR("cirrus_fbdev_init failed\n"); + return ret; + } + + return 0; +} + +void cirrus_modeset_fini(struct cirrus_device *cdev) +{ + cirrus_fbdev_fini(cdev); + + if (cdev->mode_info.mode_config_initialized) { + drm_mode_config_cleanup(cdev->dev); + cdev->mode_info.mode_config_initialized = false; + } +} diff --git a/kernel/drivers/gpu/drm/cirrus/cirrus_ttm.c b/kernel/drivers/gpu/drm/cirrus/cirrus_ttm.c new file mode 100644 index 000000000..dfffd5285 --- /dev/null +++ b/kernel/drivers/gpu/drm/cirrus/cirrus_ttm.c @@ -0,0 +1,419 @@ +/* + * Copyright 2012 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + */ +/* + * Authors: Dave Airlie <airlied@redhat.com> + */ +#include <drm/drmP.h> +#include "cirrus_drv.h" +#include <ttm/ttm_page_alloc.h> + +static inline struct cirrus_device * +cirrus_bdev(struct ttm_bo_device *bd) +{ + return container_of(bd, struct cirrus_device, ttm.bdev); +} + +static int +cirrus_ttm_mem_global_init(struct drm_global_reference *ref) +{ + return ttm_mem_global_init(ref->object); +} + +static void +cirrus_ttm_mem_global_release(struct drm_global_reference *ref) +{ + ttm_mem_global_release(ref->object); +} + +static int cirrus_ttm_global_init(struct cirrus_device *cirrus) +{ + struct drm_global_reference *global_ref; + int r; + + global_ref = &cirrus->ttm.mem_global_ref; + global_ref->global_type = DRM_GLOBAL_TTM_MEM; + global_ref->size = sizeof(struct ttm_mem_global); + global_ref->init = &cirrus_ttm_mem_global_init; + global_ref->release = &cirrus_ttm_mem_global_release; + r = drm_global_item_ref(global_ref); + if (r != 0) { + DRM_ERROR("Failed setting up TTM memory accounting " + "subsystem.\n"); + return r; + } + + cirrus->ttm.bo_global_ref.mem_glob = + cirrus->ttm.mem_global_ref.object; + global_ref = &cirrus->ttm.bo_global_ref.ref; + global_ref->global_type = DRM_GLOBAL_TTM_BO; + global_ref->size = sizeof(struct ttm_bo_global); + global_ref->init = &ttm_bo_global_init; + global_ref->release = &ttm_bo_global_release; + r = drm_global_item_ref(global_ref); + if (r != 0) { + DRM_ERROR("Failed setting up TTM BO subsystem.\n"); + drm_global_item_unref(&cirrus->ttm.mem_global_ref); + return r; + } + return 0; +} + +static void +cirrus_ttm_global_release(struct cirrus_device *cirrus) +{ + if (cirrus->ttm.mem_global_ref.release == NULL) + return; + + drm_global_item_unref(&cirrus->ttm.bo_global_ref.ref); + drm_global_item_unref(&cirrus->ttm.mem_global_ref); + cirrus->ttm.mem_global_ref.release = NULL; +} + + +static void cirrus_bo_ttm_destroy(struct ttm_buffer_object *tbo) +{ + struct cirrus_bo *bo; + + bo = container_of(tbo, struct cirrus_bo, bo); + + drm_gem_object_release(&bo->gem); + kfree(bo); +} + +static bool cirrus_ttm_bo_is_cirrus_bo(struct ttm_buffer_object *bo) +{ + if (bo->destroy == &cirrus_bo_ttm_destroy) + return true; + return false; +} + +static int +cirrus_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, + struct ttm_mem_type_manager *man) +{ + switch (type) { + case TTM_PL_SYSTEM: + man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; + man->available_caching = TTM_PL_MASK_CACHING; + man->default_caching = TTM_PL_FLAG_CACHED; + break; + case TTM_PL_VRAM: + man->func = &ttm_bo_manager_func; + man->flags = TTM_MEMTYPE_FLAG_FIXED | + TTM_MEMTYPE_FLAG_MAPPABLE; + man->available_caching = TTM_PL_FLAG_UNCACHED | + TTM_PL_FLAG_WC; + man->default_caching = TTM_PL_FLAG_WC; + break; + default: + DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); + return -EINVAL; + } + return 0; +} + +static void +cirrus_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl) +{ + struct cirrus_bo *cirrusbo = cirrus_bo(bo); + + if (!cirrus_ttm_bo_is_cirrus_bo(bo)) + return; + + cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_SYSTEM); + *pl = cirrusbo->placement; +} + +static int cirrus_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp) +{ + struct cirrus_bo *cirrusbo = cirrus_bo(bo); + + return drm_vma_node_verify_access(&cirrusbo->gem.vma_node, filp); +} + +static int cirrus_ttm_io_mem_reserve(struct ttm_bo_device *bdev, + struct ttm_mem_reg *mem) +{ + struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; + struct cirrus_device *cirrus = cirrus_bdev(bdev); + + mem->bus.addr = NULL; + mem->bus.offset = 0; + mem->bus.size = mem->num_pages << PAGE_SHIFT; + mem->bus.base = 0; + mem->bus.is_iomem = false; + if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) + return -EINVAL; + switch (mem->mem_type) { + case TTM_PL_SYSTEM: + /* system memory */ + return 0; + case TTM_PL_VRAM: + mem->bus.offset = mem->start << PAGE_SHIFT; + mem->bus.base = pci_resource_start(cirrus->dev->pdev, 0); + mem->bus.is_iomem = true; + break; + default: + return -EINVAL; + break; + } + return 0; +} + +static void cirrus_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) +{ +} + +static int cirrus_bo_move(struct ttm_buffer_object *bo, + bool evict, bool interruptible, + bool no_wait_gpu, + struct ttm_mem_reg *new_mem) +{ + int r; + r = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem); + return r; +} + + +static void cirrus_ttm_backend_destroy(struct ttm_tt *tt) +{ + ttm_tt_fini(tt); + kfree(tt); +} + +static struct ttm_backend_func cirrus_tt_backend_func = { + .destroy = &cirrus_ttm_backend_destroy, +}; + + +static struct ttm_tt *cirrus_ttm_tt_create(struct ttm_bo_device *bdev, + unsigned long size, uint32_t page_flags, + struct page *dummy_read_page) +{ + struct ttm_tt *tt; + + tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); + if (tt == NULL) + return NULL; + tt->func = &cirrus_tt_backend_func; + if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) { + kfree(tt); + return NULL; + } + return tt; +} + +static int cirrus_ttm_tt_populate(struct ttm_tt *ttm) +{ + return ttm_pool_populate(ttm); +} + +static void cirrus_ttm_tt_unpopulate(struct ttm_tt *ttm) +{ + ttm_pool_unpopulate(ttm); +} + +struct ttm_bo_driver cirrus_bo_driver = { + .ttm_tt_create = cirrus_ttm_tt_create, + .ttm_tt_populate = cirrus_ttm_tt_populate, + .ttm_tt_unpopulate = cirrus_ttm_tt_unpopulate, + .init_mem_type = cirrus_bo_init_mem_type, + .evict_flags = cirrus_bo_evict_flags, + .move = cirrus_bo_move, + .verify_access = cirrus_bo_verify_access, + .io_mem_reserve = &cirrus_ttm_io_mem_reserve, + .io_mem_free = &cirrus_ttm_io_mem_free, +}; + +int cirrus_mm_init(struct cirrus_device *cirrus) +{ + int ret; + struct drm_device *dev = cirrus->dev; + struct ttm_bo_device *bdev = &cirrus->ttm.bdev; + + ret = cirrus_ttm_global_init(cirrus); + if (ret) + return ret; + + ret = ttm_bo_device_init(&cirrus->ttm.bdev, + cirrus->ttm.bo_global_ref.ref.object, + &cirrus_bo_driver, + dev->anon_inode->i_mapping, + DRM_FILE_PAGE_OFFSET, + true); + if (ret) { + DRM_ERROR("Error initialising bo driver; %d\n", ret); + return ret; + } + + ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM, + cirrus->mc.vram_size >> PAGE_SHIFT); + if (ret) { + DRM_ERROR("Failed ttm VRAM init: %d\n", ret); + return ret; + } + + cirrus->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0), + pci_resource_len(dev->pdev, 0)); + + cirrus->mm_inited = true; + return 0; +} + +void cirrus_mm_fini(struct cirrus_device *cirrus) +{ + if (!cirrus->mm_inited) + return; + + ttm_bo_device_release(&cirrus->ttm.bdev); + + cirrus_ttm_global_release(cirrus); + + arch_phys_wc_del(cirrus->fb_mtrr); + cirrus->fb_mtrr = 0; +} + +void cirrus_ttm_placement(struct cirrus_bo *bo, int domain) +{ + u32 c = 0; + unsigned i; + bo->placement.placement = bo->placements; + bo->placement.busy_placement = bo->placements; + if (domain & TTM_PL_FLAG_VRAM) + bo->placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM; + if (domain & TTM_PL_FLAG_SYSTEM) + bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; + if (!c) + bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; + bo->placement.num_placement = c; + bo->placement.num_busy_placement = c; + for (i = 0; i < c; ++i) { + bo->placements[i].fpfn = 0; + bo->placements[i].lpfn = 0; + } +} + +int cirrus_bo_create(struct drm_device *dev, int size, int align, + uint32_t flags, struct cirrus_bo **pcirrusbo) +{ + struct cirrus_device *cirrus = dev->dev_private; + struct cirrus_bo *cirrusbo; + size_t acc_size; + int ret; + + cirrusbo = kzalloc(sizeof(struct cirrus_bo), GFP_KERNEL); + if (!cirrusbo) + return -ENOMEM; + + ret = drm_gem_object_init(dev, &cirrusbo->gem, size); + if (ret) { + kfree(cirrusbo); + return ret; + } + + cirrusbo->bo.bdev = &cirrus->ttm.bdev; + + cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM); + + acc_size = ttm_bo_dma_acc_size(&cirrus->ttm.bdev, size, + sizeof(struct cirrus_bo)); + + ret = ttm_bo_init(&cirrus->ttm.bdev, &cirrusbo->bo, size, + ttm_bo_type_device, &cirrusbo->placement, + align >> PAGE_SHIFT, false, NULL, acc_size, + NULL, NULL, cirrus_bo_ttm_destroy); + if (ret) + return ret; + + *pcirrusbo = cirrusbo; + return 0; +} + +static inline u64 cirrus_bo_gpu_offset(struct cirrus_bo *bo) +{ + return bo->bo.offset; +} + +int cirrus_bo_pin(struct cirrus_bo *bo, u32 pl_flag, u64 *gpu_addr) +{ + int i, ret; + + if (bo->pin_count) { + bo->pin_count++; + if (gpu_addr) + *gpu_addr = cirrus_bo_gpu_offset(bo); + } + + cirrus_ttm_placement(bo, pl_flag); + for (i = 0; i < bo->placement.num_placement; i++) + bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; + ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); + if (ret) + return ret; + + bo->pin_count = 1; + if (gpu_addr) + *gpu_addr = cirrus_bo_gpu_offset(bo); + return 0; +} + +int cirrus_bo_push_sysram(struct cirrus_bo *bo) +{ + int i, ret; + if (!bo->pin_count) { + DRM_ERROR("unpin bad %p\n", bo); + return 0; + } + bo->pin_count--; + if (bo->pin_count) + return 0; + + if (bo->kmap.virtual) + ttm_bo_kunmap(&bo->kmap); + + cirrus_ttm_placement(bo, TTM_PL_FLAG_SYSTEM); + for (i = 0; i < bo->placement.num_placement ; i++) + bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; + + ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); + if (ret) { + DRM_ERROR("pushing to VRAM failed\n"); + return ret; + } + return 0; +} + +int cirrus_mmap(struct file *filp, struct vm_area_struct *vma) +{ + struct drm_file *file_priv; + struct cirrus_device *cirrus; + + if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) + return -EINVAL; + + file_priv = filp->private_data; + cirrus = file_priv->minor->dev->dev_private; + return ttm_bo_mmap(filp, vma, &cirrus->ttm.bdev); +} |