From mboxrd@z Thu Jan 1 00:00:00 1970 From: zourongrong@huawei.com (Rongrong Zou) Date: Fri, 11 Nov 2016 21:16:06 +0800 Subject: [PATCH v6 3/9] drm/hisilicon/hibmc: Add support for frame buffer In-Reply-To: References: <1477639682-22520-1-git-send-email-zourongrong@gmail.com> <1477639682-22520-4-git-send-email-zourongrong@gmail.com> Message-ID: <5825C496.5070905@huawei.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org ? 2016/11/11 2:30, Sean Paul ??: > On Fri, Oct 28, 2016 at 3:27 AM, Rongrong Zou wrote: >> Add support for fbdev and kms fb management. >> >> Signed-off-by: Rongrong Zou >> --- >> drivers/gpu/drm/hisilicon/hibmc/Makefile | 2 +- >> drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 17 ++ >> drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h | 24 ++ >> drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c | 255 ++++++++++++++++++++++ >> drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c | 66 ++++++ >> 5 files changed, 363 insertions(+), 1 deletion(-) >> create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c >> >> diff --git a/drivers/gpu/drm/hisilicon/hibmc/Makefile b/drivers/gpu/drm/hisilicon/hibmc/Makefile >> index d5c40b8..810a37e 100644 >> --- a/drivers/gpu/drm/hisilicon/hibmc/Makefile >> +++ b/drivers/gpu/drm/hisilicon/hibmc/Makefile >> @@ -1,5 +1,5 @@ >> ccflags-y := -Iinclude/drm >> -hibmc-drm-y := hibmc_drm_drv.o hibmc_drm_power.o hibmc_ttm.o >> +hibmc-drm-y := hibmc_drm_drv.o hibmc_drm_fbdev.o hibmc_drm_power.o hibmc_ttm.o >> >> obj-$(CONFIG_DRM_HISI_HIBMC) +=hibmc-drm.o >> #obj-y += hibmc-drm.o >> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c >> index 81f4301..5ac7a7e 100644 >> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c >> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c >> @@ -66,11 +66,23 @@ static void hibmc_disable_vblank(struct drm_device *dev, unsigned int pipe) >> >> static int hibmc_pm_suspend(struct device *dev) >> { >> + struct pci_dev *pdev = to_pci_dev(dev); >> + struct drm_device *drm_dev = pci_get_drvdata(pdev); >> + struct hibmc_drm_device *hidev = drm_dev->dev_private; >> + >> + drm_fb_helper_set_suspend_unlocked(&hidev->fbdev->helper, 1); >> + > > We have atomic helpers for suspend/resume now. Please use those. drm_atomic_helper_suspend/resume()? > >> return 0; >> } >> >> static int hibmc_pm_resume(struct device *dev) >> { >> + struct pci_dev *pdev = to_pci_dev(dev); >> + struct drm_device *drm_dev = pci_get_drvdata(pdev); >> + struct hibmc_drm_device *hidev = drm_dev->dev_private; >> + >> + drm_fb_helper_set_suspend_unlocked(&hidev->fbdev->helper, 0); >> + >> return 0; >> } >> >> @@ -170,6 +182,7 @@ static int hibmc_unload(struct drm_device *dev) >> { >> struct hibmc_drm_device *hidev = dev->dev_private; >> >> + hibmc_fbdev_fini(hidev); >> hibmc_mm_fini(hidev); >> hibmc_hw_fini(hidev); >> dev->dev_private = NULL; >> @@ -195,6 +208,10 @@ static int hibmc_load(struct drm_device *dev, unsigned long flags) >> if (ret) >> goto err; >> >> + ret = hibmc_fbdev_init(hidev); >> + if (ret) >> + goto err; >> + >> return 0; >> >> err: >> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h >> index db8d80e..a40e9a7 100644 >> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h >> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h >> @@ -20,9 +20,22 @@ >> #define HIBMC_DRM_DRV_H >> >> #include >> +#include >> #include >> #include >> >> +struct hibmc_framebuffer { >> + struct drm_framebuffer fb; >> + struct drm_gem_object *obj; >> + bool is_fbdev_fb; >> +}; >> + >> +struct hibmc_fbdev { >> + struct drm_fb_helper helper; >> + struct hibmc_framebuffer *fb; >> + int size; >> +}; >> + >> struct hibmc_drm_device { >> /* hw */ >> void __iomem *mmio; >> @@ -41,9 +54,13 @@ struct hibmc_drm_device { >> bool initialized; >> } ttm; >> >> + /* fbdev */ >> + struct hibmc_fbdev *fbdev; >> bool mm_inited; >> }; >> >> +#define to_hibmc_framebuffer(x) container_of(x, struct hibmc_framebuffer, fb) >> + >> struct hibmc_bo { >> struct ttm_buffer_object bo; >> struct ttm_placement placement; >> @@ -65,8 +82,15 @@ static inline struct hibmc_bo *gem_to_hibmc_bo(struct drm_gem_object *gem) >> >> #define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT) >> >> +int hibmc_fbdev_init(struct hibmc_drm_device *hidev); >> +void hibmc_fbdev_fini(struct hibmc_drm_device *hidev); >> + >> int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel, >> struct drm_gem_object **obj); >> +struct hibmc_framebuffer * >> +hibmc_framebuffer_init(struct drm_device *dev, >> + const struct drm_mode_fb_cmd2 *mode_cmd, >> + struct drm_gem_object *obj); >> >> int hibmc_mm_init(struct hibmc_drm_device *hibmc); >> void hibmc_mm_fini(struct hibmc_drm_device *hibmc); >> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c >> new file mode 100644 >> index 0000000..630124b >> --- /dev/null >> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c >> @@ -0,0 +1,255 @@ >> +/* Hisilicon Hibmc SoC drm driver >> + * >> + * Based on the bochs drm driver. >> + * >> + * Copyright (c) 2016 Huawei Limited. >> + * >> + * Author: >> + * Rongrong Zou >> + * Rongrong Zou >> + * Jianhua Li >> + * >> + * 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. >> + * >> + */ >> + >> +#include >> +#include >> +#include >> + >> +#include "hibmc_drm_drv.h" >> + >> +/* ---------------------------------------------------------------------- */ > > Please remove will do that, thanks. > >> + >> +static int hibmcfb_create_object( >> + struct hibmc_drm_device *hidev, >> + const struct drm_mode_fb_cmd2 *mode_cmd, >> + struct drm_gem_object **gobj_p) >> +{ >> + struct drm_gem_object *gobj; >> + struct drm_device *dev = hidev->dev; >> + u32 size; >> + int ret = 0; >> + >> + size = mode_cmd->pitches[0] * mode_cmd->height; >> + ret = hibmc_gem_create(dev, size, true, &gobj); >> + if (ret) >> + return ret; >> + >> + *gobj_p = gobj; >> + return ret; >> +} >> + >> +static struct fb_ops hibmc_drm_fb_ops = { >> + .owner = THIS_MODULE, >> + .fb_check_var = drm_fb_helper_check_var, >> + .fb_set_par = drm_fb_helper_set_par, >> + .fb_fillrect = drm_fb_helper_sys_fillrect, >> + .fb_copyarea = drm_fb_helper_sys_copyarea, >> + .fb_imageblit = drm_fb_helper_sys_imageblit, >> + .fb_pan_display = drm_fb_helper_pan_display, >> + .fb_blank = drm_fb_helper_blank, >> + .fb_setcmap = drm_fb_helper_setcmap, >> +}; >> + >> +static int hibmc_drm_fb_create(struct drm_fb_helper *helper, >> + struct drm_fb_helper_surface_size *sizes) >> +{ >> + struct hibmc_fbdev *hi_fbdev = >> + container_of(helper, struct hibmc_fbdev, helper); >> + struct hibmc_drm_device *hidev = >> + (struct hibmc_drm_device *)helper->dev->dev_private; >> + struct fb_info *info; >> + struct hibmc_framebuffer *hibmc_fb; >> + struct drm_framebuffer *fb; >> + struct drm_mode_fb_cmd2 mode_cmd; >> + struct drm_gem_object *gobj = NULL; >> + int ret = 0; >> + size_t size; >> + unsigned int bytes_per_pixel; >> + struct hibmc_bo *bo = NULL; >> + >> + DRM_DEBUG_DRIVER("surface width(%d), height(%d) and bpp(%d)\n", >> + sizes->surface_width, sizes->surface_height, >> + sizes->surface_bpp); >> + sizes->surface_depth = 32; >> + >> + bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8); >> + >> + mode_cmd.width = sizes->surface_width; >> + mode_cmd.height = sizes->surface_height; >> + mode_cmd.pitches[0] = mode_cmd.width * bytes_per_pixel; >> + mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, >> + sizes->surface_depth); >> + >> + size = roundup(mode_cmd.pitches[0] * mode_cmd.height, PAGE_SIZE); > > It's somewhat curious that you used ALIGN in the previous patch and > roundup here. But anyways, I think PAGE_ALIGN would be the most > appropriate thing to do here. agreed, thanks. > >> + >> + ret = hibmcfb_create_object(hidev, &mode_cmd, &gobj); >> + if (ret) { >> + DRM_ERROR("failed to create fbcon backing object %d\r\n", > ret); > > \r, yikes!!! will delete it, thanks. > >> + return -ENOMEM; >> + } >> + >> + bo = gem_to_hibmc_bo(gobj); >> + >> + ret = ttm_bo_reserve(&bo->bo, true, false, NULL); >> + if (ret) > > Print error here? will do. > > How about cleaning up gobj? you are right, > >> + return ret; >> + >> + ret = hibmc_bo_pin(bo, TTM_PL_FLAG_VRAM, NULL); >> + if (ret) { >> + DRM_ERROR("failed to pin fbcon\n"); > > Print ret > > ttm_bo_unreserve? It seems like you're missing clean-up in all of the > error paths in this function. Can you please make sure everything is > tidied up? ok, thanks. > >> + return ret; >> + } >> + >> + ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap); >> + > > nit: extra space do you mean extra line? > >> + if (ret) { >> + DRM_ERROR("failed to kmap fbcon\n"); > > Print ret ok, thanks. > >> + ttm_bo_unreserve(&bo->bo); >> + return ret; >> + } >> + >> + ttm_bo_unreserve(&bo->bo); > > Move this between ttm_bo_kmap and if (ret), then remove it from inside > the conditional. This is fine with me, thanks. > >> + >> + info = drm_fb_helper_alloc_fbi(helper); >> + if (IS_ERR(info)) > > Print error ok, thanks. > >> + return PTR_ERR(info); >> + >> + info->par = hi_fbdev; >> + >> + hibmc_fb = hibmc_framebuffer_init(hidev->dev, &mode_cmd, gobj); >> + if (IS_ERR(hibmc_fb)) { >> + drm_fb_helper_release_fbi(helper); >> + return PTR_ERR(hibmc_fb); >> + } >> + >> + hi_fbdev->fb = hibmc_fb; >> + hidev->fbdev->size = size; >> + fb = &hibmc_fb->fb; > > The fb variable isn't necessary, and really, the hibmc_fb doesn't > really help either, it just masks what's actually happening IMO. i will clean the two variables. > >> + if (!fb) { >> + DRM_INFO("fb is NULL\n"); >> + return -EINVAL; >> + } >> + >> + hi_fbdev->helper.fb = fb; >> + >> + strcpy(info->fix.id, "hibmcdrmfb"); >> + >> + info->flags = FBINFO_DEFAULT; >> + info->fbops = &hibmc_drm_fb_ops; >> + >> + drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); >> + drm_fb_helper_fill_var(info, &hidev->fbdev->helper, sizes->fb_width, >> + sizes->fb_height); >> + >> + info->screen_base = bo->kmap.virtual; >> + info->screen_size = size; >> + >> + info->fix.smem_start = bo->bo.mem.bus.offset + bo->bo.mem.bus.base; >> + info->fix.smem_len = size; >> + >> + return 0; >> +} >> + >> +static void hibmc_fbdev_destroy(struct hibmc_fbdev *fbdev) >> +{ >> + struct hibmc_framebuffer *gfb = fbdev->fb; >> + struct drm_fb_helper *fbh = &fbdev->helper; >> + >> + DRM_DEBUG_DRIVER("hibmc_fbdev_destroy\n"); > > Not useful ok, will remove. > >> + >> + drm_fb_helper_unregister_fbi(fbh); >> + drm_fb_helper_release_fbi(fbh); >> + >> + drm_fb_helper_fini(fbh); >> + >> + if (gfb) >> + drm_framebuffer_unreference(&gfb->fb); >> + >> + kfree(fbdev); >> +} >> + >> +static const struct drm_fb_helper_funcs hibmc_fbdev_helper_funcs = { >> + .fb_probe = hibmc_drm_fb_create, >> +}; >> + >> +int hibmc_fbdev_init(struct hibmc_drm_device *hidev) >> +{ >> + int ret; >> + struct fb_var_screeninfo *var; >> + struct fb_fix_screeninfo *fix; >> + struct hibmc_fbdev *hifbdev; >> + >> + hifbdev = kzalloc(sizeof(*hifbdev), GFP_KERNEL); > > devm_kzalloc? sounds good, so there need no kfree at hibmc_fbdev_destroy(), thanks. > >> + if (!hifbdev) >> + return -ENOMEM; >> + >> + hidev->fbdev = hifbdev; >> + drm_fb_helper_prepare(hidev->dev, &hifbdev->helper, >> + &hibmc_fbdev_helper_funcs); >> + >> + /* Now just one crtc and one channel */ >> + ret = drm_fb_helper_init(hidev->dev, >> + &hifbdev->helper, 1, 1); >> + > > nit: extra line ok, thanks. > >> + if (ret) >> + return ret; >> + >> + ret = drm_fb_helper_single_add_all_connectors(&hifbdev->helper); >> + if (ret) >> + goto fini; >> + >> + ret = drm_fb_helper_initial_config(&hifbdev->helper, 16); >> + if (ret) >> + goto fini; >> + >> + var = &hifbdev->helper.fbdev->var; >> + fix = &hifbdev->helper.fbdev->fix; >> + >> + DRM_DEBUG("Member of info->var is :\n" >> + "xres=%d\n" >> + "yres=%d\n" >> + "xres_virtual=%d\n" >> + "yres_virtual=%d\n" >> + "xoffset=%d\n" >> + "yoffset=%d\n" >> + "bits_per_pixel=%d\n" >> + "...\n", var->xres, var->yres, var->xres_virtual, >> + var->yres_virtual, var->xoffset, var->yoffset, >> + var->bits_per_pixel); >> + DRM_DEBUG("Member of info->fix is :\n" >> + "smem_start=%lx\n" >> + "smem_len=%d\n" >> + "type=%d\n" >> + "type_aux=%d\n" >> + "visual=%d\n" >> + "xpanstep=%d\n" >> + "ypanstep=%d\n" >> + "ywrapstep=%d\n" >> + "line_length=%d\n" >> + "accel=%d\n" >> + "capabilities=%d\n" >> + "...\n", fix->smem_start, fix->smem_len, fix->type, >> + fix->type_aux, fix->visual, fix->xpanstep, >> + fix->ypanstep, fix->ywrapstep, fix->line_length, >> + fix->accel, fix->capabilities); > > You've been using DRM_DEBUG_DRIVER elsewhere, you should probably use > it here, too. ok, thanks. > >> + >> + return 0; >> + >> +fini: >> + drm_fb_helper_fini(&hifbdev->helper); >> + return ret; >> +} >> + >> +void hibmc_fbdev_fini(struct hibmc_drm_device *hidev) >> +{ >> + if (!hidev->fbdev) >> + return; >> + >> + hibmc_fbdev_destroy(hidev->fbdev); >> + hidev->fbdev = NULL; >> +} >> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c >> index 0802ebd..9822f62 100644 >> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c >> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c >> @@ -488,3 +488,69 @@ int hibmc_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev, >> drm_gem_object_unreference_unlocked(obj); >> return 0; >> } >> + >> +/* ---------------------------------------------------------------------- */ >> + > > Please remove will do. > >> +static void hibmc_user_framebuffer_destroy(struct drm_framebuffer *fb) >> +{ >> + struct hibmc_framebuffer *hibmc_fb = to_hibmc_framebuffer(fb); >> + >> + drm_gem_object_unreference_unlocked(hibmc_fb->obj); >> + drm_framebuffer_cleanup(fb); >> + kfree(hibmc_fb); >> +} >> + >> +static const struct drm_framebuffer_funcs hibmc_fb_funcs = { >> + .destroy = hibmc_user_framebuffer_destroy, >> +}; >> + >> +struct hibmc_framebuffer * >> +hibmc_framebuffer_init(struct drm_device *dev, >> + const struct drm_mode_fb_cmd2 *mode_cmd, >> + struct drm_gem_object *obj) >> +{ >> + struct hibmc_framebuffer *hibmc_fb; >> + int ret; >> + >> + hibmc_fb = kzalloc(sizeof(*hibmc_fb), GFP_KERNEL); >> + if (!hibmc_fb) > > Print error ok, thanks. Regards, Rongrong. > >> + return ERR_PTR(-ENOMEM); >> + >> + drm_helper_mode_fill_fb_struct(&hibmc_fb->fb, mode_cmd); >> + hibmc_fb->obj = obj; >> + ret = drm_framebuffer_init(dev, &hibmc_fb->fb, &hibmc_fb_funcs); >> + if (ret) { >> + DRM_ERROR("drm_framebuffer_init failed: %d\n", ret); >> + kfree(hibmc_fb); >> + return ERR_PTR(ret); >> + } >> + >> + return hibmc_fb; >> +} >> + >> +static struct drm_framebuffer * >> +hibmc_user_framebuffer_create(struct drm_device *dev, >> + struct drm_file *filp, >> + const struct drm_mode_fb_cmd2 *mode_cmd) >> +{ >> + struct drm_gem_object *obj; >> + struct hibmc_framebuffer *hibmc_fb; >> + >> + DRM_DEBUG_DRIVER("%dx%d, format %c%c%c%c\n", >> + mode_cmd->width, mode_cmd->height, >> + (mode_cmd->pixel_format) & 0xff, >> + (mode_cmd->pixel_format >> 8) & 0xff, >> + (mode_cmd->pixel_format >> 16) & 0xff, >> + (mode_cmd->pixel_format >> 24) & 0xff); >> + >> + obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]); >> + if (!obj) >> + return ERR_PTR(-ENOENT); >> + >> + hibmc_fb = hibmc_framebuffer_init(dev, mode_cmd, obj); >> + if (IS_ERR(hibmc_fb)) { >> + drm_gem_object_unreference_unlocked(obj); >> + return ERR_PTR((long)hibmc_fb); >> + } >> + return &hibmc_fb->fb; >> +} >> -- >> 1.9.1 >> >> >> _______________________________________________ >> linux-arm-kernel mailing list >> linux-arm-kernel at lists.infradead.org >> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel > _______________________________________________ > linuxarm mailing list > linuxarm at huawei.com > http://rnd-openeuler.huawei.com/mailman/listinfo/linuxarm > > . > From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rongrong Zou Subject: Re: [PATCH v6 3/9] drm/hisilicon/hibmc: Add support for frame buffer Date: Fri, 11 Nov 2016 21:16:06 +0800 Message-ID: <5825C496.5070905@huawei.com> References: <1477639682-22520-1-git-send-email-zourongrong@gmail.com> <1477639682-22520-4-git-send-email-zourongrong@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Sean Paul , Rongrong Zou Cc: Mark Rutland , Archit , shenhui@huawei.com, Tomeu Vizoso , Jonathan Corbet , Dave Airlie , catalin.marinas@arm.com, Emil Velikov , linuxarm@huawei.com, dri-devel , xinliang.liu@linaro.org, james.xiong@huawei.com, daniel@fooishbar.org, Daniel Vetter , Will Deacon , lijianhua@huawei.com, Linux ARM Kernel , Benjamin Gaignard List-Id: dri-devel@lists.freedesktop.org 5ZyoIDIwMTYvMTEvMTEgMjozMCwgU2VhbiBQYXVsIOWGmemBkzoKPiBPbiBGcmksIE9jdCAyOCwg MjAxNiBhdCAzOjI3IEFNLCBSb25ncm9uZyBab3UgPHpvdXJvbmdyb25nQGdtYWlsLmNvbT4gd3Jv dGU6Cj4+IEFkZCBzdXBwb3J0IGZvciBmYmRldiBhbmQga21zIGZiIG1hbmFnZW1lbnQuCj4+Cj4+ IFNpZ25lZC1vZmYtYnk6IFJvbmdyb25nIFpvdSA8em91cm9uZ3JvbmdAZ21haWwuY29tPgo+PiAt 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