From bbd60fee2d2166b2b8722cbad740996ef2e7ce40 Mon Sep 17 00:00:00 2001 From: Christian König Date: Mon, 11 Jul 2022 16:48:01 +0200 Subject: dma-buf: revert "return only unsignaled fences in dma_fence_unwrap_for_each v3" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This reverts commit 8f61973718485f3e89bc4f408f929048b7b47c83. It turned out that this is not correct. Especially the sync_file info IOCTL needs to see even signaled fences to correctly report back their status to userspace. Instead add the filter in the merge function again where it makes sense. Signed-off-by: Christian König Tested-by: Karolina Drobnik Reviewed-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20220712102849.1562-1-christian.koenig@amd.com --- include/linux/dma-fence-unwrap.h | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dma-fence-unwrap.h b/include/linux/dma-fence-unwrap.h index 390de1ee9d35..66b1e56fbb81 100644 --- a/include/linux/dma-fence-unwrap.h +++ b/include/linux/dma-fence-unwrap.h @@ -43,14 +43,10 @@ struct dma_fence *dma_fence_unwrap_next(struct dma_fence_unwrap *cursor); * Unwrap dma_fence_chain and dma_fence_array containers and deep dive into all * potential fences in them. If @head is just a normal fence only that one is * returned. - * - * Note that signalled fences are opportunistically filtered out, which - * means the iteration is potentially over no fence at all. */ #define dma_fence_unwrap_for_each(fence, cursor, head) \ for (fence = dma_fence_unwrap_first(head, cursor); fence; \ - fence = dma_fence_unwrap_next(cursor)) \ - if (!dma_fence_is_signaled(fence)) + fence = dma_fence_unwrap_next(cursor)) struct dma_fence *__dma_fence_unwrap_merge(unsigned int num_fences, struct dma_fence **fences, -- cgit v1.2.3 From 0b8613a21d9c52ccde18264b69de9f46faa362df Mon Sep 17 00:00:00 2001 From: Christian König Date: Tue, 12 Jul 2022 14:59:36 +0200 Subject: dma-buf/dma_resv_usage: update explicit sync documentation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make it clear that DMA_RESV_USAGE_BOOKKEEP can be used for explicit synced user space submissions as well and document the rules around adding the same fence with different usages. Signed-off-by: Christian König Reviewed-by: Bas Nieuwenhuizen Acked-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20220712131201.131475-1-christian.koenig@amd.com --- include/linux/dma-resv.h | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dma-resv.h b/include/linux/dma-resv.h index c8ccbc94d5d2..0637659a702c 100644 --- a/include/linux/dma-resv.h +++ b/include/linux/dma-resv.h @@ -62,6 +62,11 @@ struct dma_resv_list; * For example when asking for WRITE fences then the KERNEL fences are returned * as well. Similar when asked for READ fences then both WRITE and KERNEL * fences are returned as well. + * + * Already used fences can be promoted in the sense that a fence with + * DMA_RESV_USAGE_BOOKKEEP could become DMA_RESV_USAGE_READ by adding it again + * with this usage. But fences can never be degraded in the sense that a fence + * with DMA_RESV_USAGE_WRITE could become DMA_RESV_USAGE_READ. */ enum dma_resv_usage { /** @@ -98,10 +103,15 @@ enum dma_resv_usage { * @DMA_RESV_USAGE_BOOKKEEP: No implicit sync. * * This should be used by submissions which don't want to participate in - * implicit synchronization. + * any implicit synchronization. + * + * The most common case are preemption fences, page table updates, TLB + * flushes as well as explicit synced user submissions. * - * The most common case are preemption fences as well as page table - * updates and their TLB flushes. + * Explicit synced user user submissions can be promoted to + * DMA_RESV_USAGE_READ or DMA_RESV_USAGE_WRITE as needed using + * dma_buf_import_sync_file() when implicit synchronization should + * become necessary after initial adding of the fence. */ DMA_RESV_USAGE_BOOKKEEP }; -- cgit v1.2.3 From 9d69ef1838150c7d87afc1a87aa658c637217585 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Mon, 18 Jul 2022 09:23:15 +0200 Subject: fbdev/core: Remove remove_conflicting_pci_framebuffers() Remove remove_conflicting_pci_framebuffers() and implement similar functionality in aperture_remove_conflicting_pci_device(), which was the only caller. Removes an otherwise unused interface and streamlines the aperture helper. No functional changes. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20220718072322.8927-5-tzimmermann@suse.de --- drivers/video/aperture.c | 30 +++++++++++++++---------- drivers/video/fbdev/core/fbmem.c | 48 ---------------------------------------- include/linux/fb.h | 2 -- 3 files changed, 18 insertions(+), 62 deletions(-) (limited to 'include/linux') diff --git a/drivers/video/aperture.c b/drivers/video/aperture.c index 538f2d40acda..f42a0d8bc211 100644 --- a/drivers/video/aperture.c +++ b/drivers/video/aperture.c @@ -321,30 +321,36 @@ EXPORT_SYMBOL(aperture_remove_conflicting_devices); */ int aperture_remove_conflicting_pci_devices(struct pci_dev *pdev, const char *name) { + bool primary = false; resource_size_t base, size; int bar, ret; - /* - * WARNING: Apparently we must kick fbdev drivers before vgacon, - * otherwise the vga fbdev driver falls over. - */ -#if IS_REACHABLE(CONFIG_FB) - ret = remove_conflicting_pci_framebuffers(pdev, name); - if (ret) - return ret; +#ifdef CONFIG_X86 + primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW; #endif - ret = vga_remove_vgacon(pdev); - if (ret) - return ret; for (bar = 0; bar < PCI_STD_NUM_BARS; ++bar) { if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) continue; + base = pci_resource_start(pdev, bar); size = pci_resource_len(pdev, bar); - aperture_detach_devices(base, size); + ret = aperture_remove_conflicting_devices(base, size, primary, name); + if (ret) + break; } + if (ret) + return ret; + + /* + * WARNING: Apparently we must kick fbdev drivers before vgacon, + * otherwise the vga fbdev driver falls over. + */ + ret = vga_remove_vgacon(pdev); + if (ret) + return ret; + return 0; } diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index 02b0cf2cfafe..c8f9532cc6b4 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -1799,54 +1799,6 @@ int remove_conflicting_framebuffers(struct apertures_struct *a, } EXPORT_SYMBOL(remove_conflicting_framebuffers); -/** - * remove_conflicting_pci_framebuffers - remove firmware-configured framebuffers for PCI devices - * @pdev: PCI device - * @name: requesting driver name - * - * This function removes framebuffer devices (eg. initialized by firmware) - * using memory range configured for any of @pdev's memory bars. - * - * The function assumes that PCI device with shadowed ROM drives a primary - * display and so kicks out vga16fb. - */ -int remove_conflicting_pci_framebuffers(struct pci_dev *pdev, const char *name) -{ - struct apertures_struct *ap; - bool primary = false; - int err, idx, bar; - - for (idx = 0, bar = 0; bar < PCI_STD_NUM_BARS; bar++) { - if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) - continue; - idx++; - } - - ap = alloc_apertures(idx); - if (!ap) - return -ENOMEM; - - for (idx = 0, bar = 0; bar < PCI_STD_NUM_BARS; bar++) { - if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) - continue; - ap->ranges[idx].base = pci_resource_start(pdev, bar); - ap->ranges[idx].size = pci_resource_len(pdev, bar); - pci_dbg(pdev, "%s: bar %d: 0x%lx -> 0x%lx\n", __func__, bar, - (unsigned long)pci_resource_start(pdev, bar), - (unsigned long)pci_resource_end(pdev, bar)); - idx++; - } - -#ifdef CONFIG_X86 - primary = pdev->resource[PCI_ROM_RESOURCE].flags & - IORESOURCE_ROM_SHADOW; -#endif - err = remove_conflicting_framebuffers(ap, name, primary); - kfree(ap); - return err; -} -EXPORT_SYMBOL(remove_conflicting_pci_framebuffers); - /** * register_framebuffer - registers a frame buffer device * @fb_info: frame buffer info structure diff --git a/include/linux/fb.h b/include/linux/fb.h index 07fcd0e56682..b91c77016560 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -615,8 +615,6 @@ extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf, /* drivers/video/fbmem.c */ extern int register_framebuffer(struct fb_info *fb_info); extern void unregister_framebuffer(struct fb_info *fb_info); -extern int remove_conflicting_pci_framebuffers(struct pci_dev *pdev, - const char *name); extern int remove_conflicting_framebuffers(struct apertures_struct *a, const char *name, bool primary); extern int fb_prepare_logo(struct fb_info *fb_info, int rotate); -- cgit v1.2.3 From 15fced5b051e6e22c228a521a5894b12c2ba0892 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Mon, 18 Jul 2022 09:23:22 +0200 Subject: fbdev: Remove conflict-handling code Remove the call to do_remove_conflicting_framebuffers() from the framebuffer registration. Aperture helpers take care of removing conflicting devices. With all ownership information stored in the aperture datastrcutures, remove remove_conflicting_framebuffers() entirely. This change also rectifies DRM generic-framebuffer registration, which tried to unregister conflicting framebuffers, even though it's entirely build on top of DRM. v2: * remove internal aperture-overlap helpers, which are now unused Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20220718072322.8927-12-tzimmermann@suse.de --- drivers/video/aperture.c | 21 ------ drivers/video/fbdev/core/fbmem.c | 136 --------------------------------------- include/linux/fb.h | 2 - 3 files changed, 159 deletions(-) (limited to 'include/linux') diff --git a/drivers/video/aperture.c b/drivers/video/aperture.c index abc691284a77..9e6bcc03a1a4 100644 --- a/drivers/video/aperture.c +++ b/drivers/video/aperture.c @@ -2,7 +2,6 @@ #include #include -#include /* for old fbdev helpers */ #include #include #include @@ -286,11 +285,6 @@ static void aperture_detach_devices(resource_size_t base, resource_size_t size) int aperture_remove_conflicting_devices(resource_size_t base, resource_size_t size, bool primary, const char *name) { -#if IS_REACHABLE(CONFIG_FB) - struct apertures_struct *a; - int ret; -#endif - /* * If a driver asked to unregister a platform device registered by * sysfb, then can be assumed that this is a driver for a display @@ -312,21 +306,6 @@ int aperture_remove_conflicting_devices(resource_size_t base, resource_size_t si if (primary) aperture_detach_devices(VGA_FB_PHYS_BASE, VGA_FB_PHYS_SIZE); -#if IS_REACHABLE(CONFIG_FB) - a = alloc_apertures(1); - if (!a) - return -ENOMEM; - - a->ranges[0].base = base; - a->ranges[0].size = size; - - ret = remove_conflicting_framebuffers(a, name, primary); - kfree(a); - - if (ret) - return ret; -#endif - return 0; } EXPORT_SYMBOL(aperture_remove_conflicting_devices); diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index d790d30624a8..6ae1c5fa19f9 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -1526,102 +1526,6 @@ static int fb_check_foreignness(struct fb_info *fi) return 0; } -static bool apertures_overlap(struct aperture *gen, struct aperture *hw) -{ - /* is the generic aperture base the same as the HW one */ - if (gen->base == hw->base) - return true; - /* is the generic aperture base inside the hw base->hw base+size */ - if (gen->base > hw->base && gen->base < hw->base + hw->size) - return true; - return false; -} - -static bool fb_do_apertures_overlap(struct apertures_struct *gena, - struct apertures_struct *hwa) -{ - int i, j; - if (!hwa || !gena) - return false; - - for (i = 0; i < hwa->count; ++i) { - struct aperture *h = &hwa->ranges[i]; - for (j = 0; j < gena->count; ++j) { - struct aperture *g = &gena->ranges[j]; - printk(KERN_DEBUG "checking generic (%llx %llx) vs hw (%llx %llx)\n", - (unsigned long long)g->base, - (unsigned long long)g->size, - (unsigned long long)h->base, - (unsigned long long)h->size); - if (apertures_overlap(g, h)) - return true; - } - } - - return false; -} - -static void do_unregister_framebuffer(struct fb_info *fb_info); - -static void do_remove_conflicting_framebuffers(struct apertures_struct *a, - const char *name, bool primary) -{ - int i; - -restart_removal: - /* check all firmware fbs and kick off if the base addr overlaps */ - for_each_registered_fb(i) { - struct apertures_struct *gen_aper; - struct device *device; - - if (!(registered_fb[i]->flags & FBINFO_MISC_FIRMWARE)) - continue; - - gen_aper = registered_fb[i]->apertures; - device = registered_fb[i]->device; - if (fb_do_apertures_overlap(gen_aper, a) || - (primary && gen_aper && gen_aper->count && - gen_aper->ranges[0].base == VGA_FB_PHYS_BASE)) { - - printk(KERN_INFO "fb%d: switching to %s from %s\n", - i, name, registered_fb[i]->fix.id); - - /* - * If we kick-out a firmware driver, we also want to remove - * the underlying platform device, such as simple-framebuffer, - * VESA, EFI, etc. A native driver will then be able to - * allocate the memory range. - * - * If it's not a platform device, at least print a warning. A - * fix would add code to remove the device from the system. For - * framebuffers without any Linux device, print a warning as - * well. - */ - if (!device) { - pr_warn("fb%d: no device set\n", i); - do_unregister_framebuffer(registered_fb[i]); - } else if (dev_is_platform(device)) { - /* - * Drop the lock because if the device is unregistered, its - * driver will call to unregister_framebuffer(), that takes - * this lock. - */ - mutex_unlock(®istration_lock); - platform_device_unregister(to_platform_device(device)); - mutex_lock(®istration_lock); - } else { - pr_warn("fb%d: cannot remove device\n", i); - do_unregister_framebuffer(registered_fb[i]); - } - /* - * Restart the removal loop now that the device has been - * unregistered and its associated framebuffer gone. - */ - goto restart_removal; - } - } -} - static int do_register_framebuffer(struct fb_info *fb_info) { int i; @@ -1630,10 +1534,6 @@ static int do_register_framebuffer(struct fb_info *fb_info) if (fb_check_foreignness(fb_info)) return -ENOSYS; - do_remove_conflicting_framebuffers(fb_info->apertures, - fb_info->fix.id, - fb_is_primary_device(fb_info)); - if (num_registered_fb == FB_MAX) return -ENXIO; @@ -1778,42 +1678,6 @@ static int fb_aperture_acquire_for_platform_device(struct fb_info *fb_info) return ret; } -/** - * remove_conflicting_framebuffers - remove firmware-configured framebuffers - * @a: memory range, users of which are to be removed - * @name: requesting driver name - * @primary: also kick vga16fb if present - * - * This function removes framebuffer devices (initialized by firmware/bootloader) - * which use memory range described by @a. If @a is NULL all such devices are - * removed. - */ -int remove_conflicting_framebuffers(struct apertures_struct *a, - const char *name, bool primary) -{ - bool do_free = false; - - if (!a) { - a = alloc_apertures(1); - if (!a) - return -ENOMEM; - - a->ranges[0].base = 0; - a->ranges[0].size = ~0; - do_free = true; - } - - mutex_lock(®istration_lock); - do_remove_conflicting_framebuffers(a, name, primary); - mutex_unlock(®istration_lock); - - if (do_free) - kfree(a); - - return 0; -} -EXPORT_SYMBOL(remove_conflicting_framebuffers); - /** * register_framebuffer - registers a frame buffer device * @fb_info: frame buffer info structure diff --git a/include/linux/fb.h b/include/linux/fb.h index b91c77016560..453c3b2b6b8e 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -615,8 +615,6 @@ extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf, /* drivers/video/fbmem.c */ extern int register_framebuffer(struct fb_info *fb_info); extern void unregister_framebuffer(struct fb_info *fb_info); -extern int remove_conflicting_framebuffers(struct apertures_struct *a, - const char *name, bool primary); extern int fb_prepare_logo(struct fb_info *fb_info, int rotate); extern int fb_show_logo(struct fb_info *fb_info, int rotate); extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size); -- cgit v1.2.3 From 5727dcfd8486399c40e39d2c08fe36fedab29d99 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Mon, 25 Jul 2022 09:54:00 +0200 Subject: fbdev: Make registered_fb[] private to fbmem.c No driver access this anymore, except for the olpc dcon fbdev driver but that has been marked as broken anyways by commit de0952f267ff ("staging: olpc_dcon: mark driver as broken"). Signed-off-by: Daniel Vetter Signed-off-by: Daniel Vetter Reviewed-by: Javier Martinez Canillas Signed-off-by: Javier Martinez Canillas Signed-off-by: Thomas Zimmermann Acked-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20220725075400.68478-1-javierm@redhat.com --- drivers/video/fbdev/core/fbmem.c | 6 +++--- include/linux/fb.h | 6 ------ 2 files changed, 3 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index 6ae1c5fa19f9..1e70d8c67653 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -51,10 +51,10 @@ static DEFINE_MUTEX(registration_lock); struct fb_info *registered_fb[FB_MAX] __read_mostly; -EXPORT_SYMBOL(registered_fb); - int num_registered_fb __read_mostly; -EXPORT_SYMBOL(num_registered_fb); +#define for_each_registered_fb(i) \ + for (i = 0; i < FB_MAX; i++) \ + if (!registered_fb[i]) {} else bool fb_center_logo __read_mostly; diff --git a/include/linux/fb.h b/include/linux/fb.h index 453c3b2b6b8e..0aff76bcbb00 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -627,16 +627,10 @@ extern int fb_get_color_depth(struct fb_var_screeninfo *var, extern int fb_get_options(const char *name, char **option); extern int fb_new_modelist(struct fb_info *info); -extern struct fb_info *registered_fb[FB_MAX]; -extern int num_registered_fb; extern bool fb_center_logo; extern int fb_logo_count; extern struct class *fb_class; -#define for_each_registered_fb(i) \ - for (i = 0; i < FB_MAX; i++) \ - if (!registered_fb[i]) {} else - static inline void lock_fb_info(struct fb_info *info) { mutex_lock(&info->lock); -- cgit v1.2.3 From 116d902fa9ff1f559b66bafad0f0cad90df95d21 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Mon, 8 Aug 2022 14:53:53 +0200 Subject: iosys-map: Add IOSYS_MAP_INIT_VADDR_IOMEM() Add IOSYS_MAP_INIT_VADDR_IOMEM() for static init of variables of type struct iosys_map. Signed-off-by: Thomas Zimmermann Reviewed-by: Lucas De Marchi Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20220808125406.20752-2-tzimmermann@suse.de --- include/linux/iosys-map.h | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/iosys-map.h b/include/linux/iosys-map.h index a533cae189d7..cb71aa616bd3 100644 --- a/include/linux/iosys-map.h +++ b/include/linux/iosys-map.h @@ -46,10 +46,13 @@ * * iosys_map_set_vaddr(&map, 0xdeadbeaf); * - * To set an address in I/O memory, use iosys_map_set_vaddr_iomem(). + * To set an address in I/O memory, use IOSYS_MAP_INIT_VADDR_IOMEM() or + * iosys_map_set_vaddr_iomem(). * * .. code-block:: c * + * struct iosys_map map = IOSYS_MAP_INIT_VADDR_IOMEM(0xdeadbeaf); + * * iosys_map_set_vaddr_iomem(&map, 0xdeadbeaf); * * Instances of struct iosys_map do not have to be cleaned up, but @@ -121,6 +124,16 @@ struct iosys_map { .is_iomem = false, \ } +/** + * IOSYS_MAP_INIT_VADDR_IOMEM - Initializes struct iosys_map to an address in I/O memory + * @vaddr_iomem_: An I/O-memory address + */ +#define IOSYS_MAP_INIT_VADDR_IOMEM(vaddr_iomem_) \ + { \ + .vaddr_iomem = (vaddr_iomem_), \ + .is_iomem = true, \ + } + /** * IOSYS_MAP_INIT_OFFSET - Initializes struct iosys_map from another iosys_map * @map_: The dma-buf mapping structure to copy from -- cgit v1.2.3 From f89aa0b6db18dea3c3c8ef266cc6c9fd8dff2d72 Mon Sep 17 00:00:00 2001 From: Markus Schneider-Pargmann Date: Thu, 1 Sep 2022 12:41:41 +0800 Subject: video/hdmi: Add audio_infoframe packing for DP Similar to HDMI, DP uses audio infoframes as well which are structured very similar to the HDMI ones. This patch adds a helper function to pack the HDMI audio infoframe for DP, called hdmi_audio_infoframe_pack_for_dp(). hdmi_audio_infoframe_pack_only() is split into two parts. One of them packs the payload only and can be used for HDMI and DP. Also constify the frame parameter in hdmi_audio_infoframe_check() as it is passed to hdmi_audio_infoframe_check_only() which expects a const. Signed-off-by: Markus Schneider-Pargmann Signed-off-by: Guillaume Ranquet Signed-off-by: Bo-Chen Chen Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Dmitry Osipenko Link: https://patchwork.freedesktop.org/patch/msgid/20220901044149.16782-3-rex-bc.chen@mediatek.com --- drivers/video/hdmi.c | 82 ++++++++++++++++++++++++++++++++++---------- include/drm/display/drm_dp.h | 2 ++ include/linux/hdmi.h | 7 +++- 3 files changed, 71 insertions(+), 20 deletions(-) (limited to 'include/linux') diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c index 947be761dfa4..03c7f27dde49 100644 --- a/drivers/video/hdmi.c +++ b/drivers/video/hdmi.c @@ -21,6 +21,7 @@ * DEALINGS IN THE SOFTWARE. */ +#include #include #include #include @@ -381,12 +382,34 @@ static int hdmi_audio_infoframe_check_only(const struct hdmi_audio_infoframe *fr * * Returns 0 on success or a negative error code on failure. */ -int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame) +int hdmi_audio_infoframe_check(const struct hdmi_audio_infoframe *frame) { return hdmi_audio_infoframe_check_only(frame); } EXPORT_SYMBOL(hdmi_audio_infoframe_check); +static void +hdmi_audio_infoframe_pack_payload(const struct hdmi_audio_infoframe *frame, + u8 *buffer) +{ + u8 channels; + + if (frame->channels >= 2) + channels = frame->channels - 1; + else + channels = 0; + + buffer[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7); + buffer[1] = ((frame->sample_frequency & 0x7) << 2) | + (frame->sample_size & 0x3); + buffer[2] = frame->coding_type_ext & 0x1f; + buffer[3] = frame->channel_allocation; + buffer[4] = (frame->level_shift_value & 0xf) << 3; + + if (frame->downmix_inhibit) + buffer[4] |= BIT(7); +} + /** * hdmi_audio_infoframe_pack_only() - write HDMI audio infoframe to binary buffer * @frame: HDMI audio infoframe @@ -404,7 +427,6 @@ EXPORT_SYMBOL(hdmi_audio_infoframe_check); ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame, void *buffer, size_t size) { - unsigned char channels; u8 *ptr = buffer; size_t length; int ret; @@ -420,28 +442,13 @@ ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame, memset(buffer, 0, size); - if (frame->channels >= 2) - channels = frame->channels - 1; - else - channels = 0; - ptr[0] = frame->type; ptr[1] = frame->version; ptr[2] = frame->length; ptr[3] = 0; /* checksum */ - /* start infoframe payload */ - ptr += HDMI_INFOFRAME_HEADER_SIZE; - - ptr[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7); - ptr[1] = ((frame->sample_frequency & 0x7) << 2) | - (frame->sample_size & 0x3); - ptr[2] = frame->coding_type_ext & 0x1f; - ptr[3] = frame->channel_allocation; - ptr[4] = (frame->level_shift_value & 0xf) << 3; - - if (frame->downmix_inhibit) - ptr[4] |= BIT(7); + hdmi_audio_infoframe_pack_payload(frame, + ptr + HDMI_INFOFRAME_HEADER_SIZE); hdmi_infoframe_set_checksum(buffer, length); @@ -479,6 +486,43 @@ ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, } EXPORT_SYMBOL(hdmi_audio_infoframe_pack); +/** + * hdmi_audio_infoframe_pack_for_dp - Pack a HDMI Audio infoframe for DisplayPort + * + * @frame: HDMI Audio infoframe + * @sdp: Secondary data packet for DisplayPort. + * @dp_version: DisplayPort version to be encoded in the header + * + * Packs a HDMI Audio Infoframe to be sent over DisplayPort. This function + * fills the secondary data packet to be used for DisplayPort. + * + * Return: Number of total written bytes or a negative errno on failure. + */ +ssize_t +hdmi_audio_infoframe_pack_for_dp(const struct hdmi_audio_infoframe *frame, + struct dp_sdp *sdp, u8 dp_version) +{ + int ret; + + ret = hdmi_audio_infoframe_check(frame); + if (ret) + return ret; + + memset(sdp->db, 0, sizeof(sdp->db)); + + /* Secondary-data packet header */ + sdp->sdp_header.HB0 = 0; + sdp->sdp_header.HB1 = frame->type; + sdp->sdp_header.HB2 = DP_SDP_AUDIO_INFOFRAME_HB2; + sdp->sdp_header.HB3 = (dp_version & 0x3f) << 2; + + hdmi_audio_infoframe_pack_payload(frame, sdp->db); + + /* Return size = frame length + four HB for sdp_header */ + return frame->length + 4; +} +EXPORT_SYMBOL(hdmi_audio_infoframe_pack_for_dp); + /** * hdmi_vendor_infoframe_init() - initialize an HDMI vendor infoframe * @frame: HDMI vendor infoframe diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h index 9e3aff7e68bb..6c0871164771 100644 --- a/include/drm/display/drm_dp.h +++ b/include/drm/display/drm_dp.h @@ -1536,6 +1536,8 @@ enum drm_dp_phy { #define DP_SDP_VSC_EXT_CEA 0x21 /* DP 1.4 */ /* 0x80+ CEA-861 infoframe types */ +#define DP_SDP_AUDIO_INFOFRAME_HB2 0x1b + /** * struct dp_sdp_header - DP secondary data packet header * @HB0: Secondary Data Packet ID diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h index c8ec982ff498..2f4dcc8d060e 100644 --- a/include/linux/hdmi.h +++ b/include/linux/hdmi.h @@ -336,7 +336,12 @@ ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, void *buffer, size_t size); ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame, void *buffer, size_t size); -int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame); +int hdmi_audio_infoframe_check(const struct hdmi_audio_infoframe *frame); + +struct dp_sdp; +ssize_t +hdmi_audio_infoframe_pack_for_dp(const struct hdmi_audio_infoframe *frame, + struct dp_sdp *sdp, u8 dp_version); enum hdmi_3d_structure { HDMI_3D_STRUCTURE_INVALID = -1, -- cgit v1.2.3 From fd72cb1bb5c71d2738a17cbdee6280365a451706 Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Thu, 8 Sep 2022 00:50:59 +0300 Subject: mei: add kdoc for struct mei_aux_device struct mei_aux_device is an interface structure requires proper documenation. Signed-off-by: Tomas Winkler Reviewed-by: Daniele Ceraolo Spurio Signed-off-by: Daniele Ceraolo Spurio Link: https://patchwork.freedesktop.org/patch/msgid/20220907215113.1596567-3-tomas.winkler@intel.com Acked-by: Greg Kroah-Hartman Signed-off-by: Joonas Lahtinen --- include/linux/mei_aux.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mei_aux.h b/include/linux/mei_aux.h index 587f25128848..a0cb587006d5 100644 --- a/include/linux/mei_aux.h +++ b/include/linux/mei_aux.h @@ -7,6 +7,12 @@ #include +/** + * struct mei_aux_device - mei auxiliary device + * @aux_dev: - auxiliary device object + * @irq: interrupt driving the mei auxiliary device + * @bar: mmio resource bar reserved to mei auxiliary device + */ struct mei_aux_device { struct auxiliary_device aux_dev; int irq; -- cgit v1.2.3 From ed57967ab64f1dcdb9efb78a3f4a950dfdccf544 Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Thu, 8 Sep 2022 00:51:00 +0300 Subject: mei: add slow_firmware flag to the mei auxiliary device Add slow_firmware flag to the mei auxiliary device info to inform the mei driver about slow underlying firmware. Such firmware will require to use larger operation timeouts. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Reviewed-by: Daniele Ceraolo Spurio Signed-off-by: Daniele Ceraolo Spurio Link: https://patchwork.freedesktop.org/patch/msgid/20220907215113.1596567-4-tomas.winkler@intel.com Acked-by: Greg Kroah-Hartman Signed-off-by: Joonas Lahtinen --- include/linux/mei_aux.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mei_aux.h b/include/linux/mei_aux.h index a0cb587006d5..4894d8bf4159 100644 --- a/include/linux/mei_aux.h +++ b/include/linux/mei_aux.h @@ -12,11 +12,14 @@ * @aux_dev: - auxiliary device object * @irq: interrupt driving the mei auxiliary device * @bar: mmio resource bar reserved to mei auxiliary device + * @slow_firmware: The device has slow underlying firmware. + * Such firmware will require to use larger operation timeouts. */ struct mei_aux_device { struct auxiliary_device aux_dev; int irq; struct resource bar; + bool slow_firmware; }; #define auxiliary_dev_to_mei_aux_dev(auxiliary_dev) \ -- cgit v1.2.3 From 342e4c7e2d38e421f99898b629b5d82e5ae90323 Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Thu, 8 Sep 2022 00:51:08 +0300 Subject: mei: gsc: setup gsc extended operational memory 1. Retrieve extended operational memory physical pointers from the auxiliary device info. 2. Setup memory registers. 3. Notify firmware that the memory is ready by sending the memory ready command. 4. Disable PXP device if GSC is not in PXP mode. CC: Daniele Ceraolo Spurio Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin Reviewed-by: Daniele Ceraolo Spurio Signed-off-by: Daniele Ceraolo Spurio Link: https://patchwork.freedesktop.org/patch/msgid/20220907215113.1596567-12-tomas.winkler@intel.com Acked-by: Greg Kroah-Hartman Signed-off-by: Joonas Lahtinen Acked-by: Greg Kroah-Hartman Signed-off-by: Joonas Lahtinen --- drivers/misc/mei/bus-fixup.c | 70 +++++++++++++++++++++++++++++++++++++++++-- drivers/misc/mei/gsc-me.c | 16 ++++++++++ drivers/misc/mei/hw-me-regs.h | 9 +++++- drivers/misc/mei/hw-me.c | 28 ++++++++++++++++- drivers/misc/mei/init.c | 2 ++ drivers/misc/mei/mei_dev.h | 17 +++++++++++ include/linux/mei_aux.h | 3 ++ 7 files changed, 141 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/drivers/misc/mei/bus-fixup.c b/drivers/misc/mei/bus-fixup.c index c4e527803299..79305e4acce2 100644 --- a/drivers/misc/mei/bus-fixup.c +++ b/drivers/misc/mei/bus-fixup.c @@ -188,6 +188,19 @@ static int mei_fwver(struct mei_cl_device *cldev) return ret; } +static int mei_gfx_memory_ready(struct mei_cl_device *cldev) +{ + struct mkhi_gfx_mem_ready req = {0}; + unsigned int mode = MEI_CL_IO_TX_INTERNAL; + + req.hdr.group_id = MKHI_GROUP_ID_GFX; + req.hdr.command = MKHI_GFX_MEMORY_READY_CMD_REQ; + req.flags = MKHI_GFX_MEM_READY_PXP_ALLOWED; + + dev_dbg(&cldev->dev, "Sending memory ready command\n"); + return __mei_cl_send(cldev->cl, (u8 *)&req, sizeof(req), 0, mode); +} + static void mei_mkhi_fix(struct mei_cl_device *cldev) { int ret; @@ -234,6 +247,39 @@ static void mei_gsc_mkhi_ver(struct mei_cl_device *cldev) dev_err(&cldev->dev, "FW version command failed %d\n", ret); mei_cldev_disable(cldev); } + +static void mei_gsc_mkhi_fix_ver(struct mei_cl_device *cldev) +{ + int ret; + + /* No need to enable the client if nothing is needed from it */ + if (!cldev->bus->fw_f_fw_ver_supported && + cldev->bus->pxp_mode != MEI_DEV_PXP_INIT) + return; + + ret = mei_cldev_enable(cldev); + if (ret) + return; + + if (cldev->bus->pxp_mode == MEI_DEV_PXP_INIT) { + ret = mei_gfx_memory_ready(cldev); + if (ret < 0) + dev_err(&cldev->dev, "memory ready command failed %d\n", ret); + else + dev_dbg(&cldev->dev, "memory ready command sent\n"); + /* we go to reset after that */ + cldev->bus->pxp_mode = MEI_DEV_PXP_SETUP; + goto out; + } + + ret = mei_fwver(cldev); + if (ret < 0) + dev_err(&cldev->dev, "FW version command failed %d\n", + ret); +out: + mei_cldev_disable(cldev); +} + /** * mei_wd - wd client on the bus, change protocol version * as the API has changed. @@ -473,6 +519,26 @@ static void vt_support(struct mei_cl_device *cldev) cldev->do_match = 1; } +/** + * pxp_is_ready - enable bus client if pxp is ready + * + * @cldev: me clients device + */ +static void pxp_is_ready(struct mei_cl_device *cldev) +{ + struct mei_device *bus = cldev->bus; + + switch (bus->pxp_mode) { + case MEI_DEV_PXP_READY: + case MEI_DEV_PXP_DEFAULT: + cldev->do_match = 1; + break; + default: + cldev->do_match = 0; + break; + } +} + #define MEI_FIXUP(_uuid, _hook) { _uuid, _hook } static struct mei_fixup { @@ -486,10 +552,10 @@ static struct mei_fixup { MEI_FIXUP(MEI_UUID_WD, mei_wd), MEI_FIXUP(MEI_UUID_MKHIF_FIX, mei_mkhi_fix), MEI_FIXUP(MEI_UUID_IGSC_MKHI, mei_gsc_mkhi_ver), - MEI_FIXUP(MEI_UUID_IGSC_MKHI_FIX, mei_gsc_mkhi_ver), + MEI_FIXUP(MEI_UUID_IGSC_MKHI_FIX, mei_gsc_mkhi_fix_ver), MEI_FIXUP(MEI_UUID_HDCP, whitelist), MEI_FIXUP(MEI_UUID_ANY, vt_support), - MEI_FIXUP(MEI_UUID_PAVP, whitelist), + MEI_FIXUP(MEI_UUID_PAVP, pxp_is_ready), }; /** diff --git a/drivers/misc/mei/gsc-me.c b/drivers/misc/mei/gsc-me.c index bfa6154b93e2..6b22726aed55 100644 --- a/drivers/misc/mei/gsc-me.c +++ b/drivers/misc/mei/gsc-me.c @@ -32,6 +32,17 @@ static int mei_gsc_read_hfs(const struct mei_device *dev, int where, u32 *val) return 0; } +static void mei_gsc_set_ext_op_mem(const struct mei_me_hw *hw, struct resource *mem) +{ + u32 low = lower_32_bits(mem->start); + u32 hi = upper_32_bits(mem->start); + u32 limit = (resource_size(mem) / SZ_4K) | GSC_EXT_OP_MEM_VALID; + + iowrite32(low, hw->mem_addr + H_GSC_EXT_OP_MEM_BASE_ADDR_LO_REG); + iowrite32(hi, hw->mem_addr + H_GSC_EXT_OP_MEM_BASE_ADDR_HI_REG); + iowrite32(limit, hw->mem_addr + H_GSC_EXT_OP_MEM_LIMIT_REG); +} + static int mei_gsc_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *aux_dev_id) { @@ -67,6 +78,11 @@ static int mei_gsc_probe(struct auxiliary_device *aux_dev, dev_set_drvdata(device, dev); + if (adev->ext_op_mem.start) { + mei_gsc_set_ext_op_mem(hw, &adev->ext_op_mem); + dev->pxp_mode = MEI_DEV_PXP_INIT; + } + /* use polling */ if (mei_me_hw_use_polling(hw)) { mei_disable_interrupts(dev); diff --git a/drivers/misc/mei/hw-me-regs.h b/drivers/misc/mei/hw-me-regs.h index 64ce3f830262..4d5e8af5745b 100644 --- a/drivers/misc/mei/hw-me-regs.h +++ b/drivers/misc/mei/hw-me-regs.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ /* - * Copyright (c) 2003-2019, Intel Corporation. All rights reserved. + * Copyright (c) 2003-2022, Intel Corporation. All rights reserved. * Intel Management Engine Interface (Intel MEI) Linux driver */ #ifndef _MEI_HW_MEI_REGS_H_ @@ -125,6 +125,8 @@ # define PCI_CFG_HFS_3_FW_SKU_SPS 0x00000060 #define PCI_CFG_HFS_4 0x64 #define PCI_CFG_HFS_5 0x68 +# define GSC_CFG_HFS_5_BOOT_TYPE_MSK 0x00000003 +# define GSC_CFG_HFS_5_BOOT_TYPE_PXP 3 #define PCI_CFG_HFS_6 0x6C /* MEI registers */ @@ -141,6 +143,11 @@ /* H_D0I3C - D0I3 Control */ #define H_D0I3C 0x800 +#define H_GSC_EXT_OP_MEM_BASE_ADDR_LO_REG 0x100 +#define H_GSC_EXT_OP_MEM_BASE_ADDR_HI_REG 0x104 +#define H_GSC_EXT_OP_MEM_LIMIT_REG 0x108 +#define GSC_EXT_OP_MEM_VALID BIT(31) + /* register bits of H_CSR (Host Control Status register) */ /* Host Circular Buffer Depth - maximum number of 32-bit entries in CB */ #define H_CBD 0xFF000000 diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index b0a2f75b32ce..bb317cd4f0f3 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -433,6 +433,29 @@ static bool mei_me_hw_is_resetting(struct mei_device *dev) return (mecsr & ME_RST_HRA) == ME_RST_HRA; } +/** + * mei_gsc_pxp_check - check for gsc firmware entering pxp mode + * + * @dev: the device structure + */ +static void mei_gsc_pxp_check(struct mei_device *dev) +{ + struct mei_me_hw *hw = to_me_hw(dev); + u32 fwsts5 = 0; + + if (dev->pxp_mode == MEI_DEV_PXP_DEFAULT) + return; + + hw->read_fws(dev, PCI_CFG_HFS_5, &fwsts5); + trace_mei_pci_cfg_read(dev->dev, "PCI_CFG_HFS_5", PCI_CFG_HFS_5, fwsts5); + if ((fwsts5 & GSC_CFG_HFS_5_BOOT_TYPE_MSK) == GSC_CFG_HFS_5_BOOT_TYPE_PXP) { + dev_dbg(dev->dev, "pxp mode is ready 0x%08x\n", fwsts5); + dev->pxp_mode = MEI_DEV_PXP_READY; + } else { + dev_dbg(dev->dev, "pxp mode is not ready 0x%08x\n", fwsts5); + } +} + /** * mei_me_hw_ready_wait - wait until the me(hw) has turned ready * or timeout is reached @@ -452,6 +475,8 @@ static int mei_me_hw_ready_wait(struct mei_device *dev) return -ETIME; } + mei_gsc_pxp_check(dev); + mei_me_hw_reset_release(dev); dev->recvd_hw_ready = false; return 0; @@ -1268,7 +1293,8 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) /* check if ME wants a reset */ if (!mei_hw_is_ready(dev) && dev->dev_state != MEI_DEV_RESETTING) { - dev_warn(dev->dev, "FW not ready: resetting.\n"); + dev_warn(dev->dev, "FW not ready: resetting: dev_state = %d pxp = %d\n", + dev->dev_state, dev->pxp_mode); if (dev->dev_state == MEI_DEV_POWERING_DOWN || dev->dev_state == MEI_DEV_POWER_DOWN) mei_cl_all_disconnect(dev); diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 5473b1fa6fff..1b4d5d7870b9 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -397,6 +397,8 @@ void mei_device_init(struct mei_device *dev, bitmap_zero(dev->host_clients_map, MEI_CLIENTS_MAX); dev->open_handle_count = 0; + dev->pxp_mode = MEI_DEV_PXP_DEFAULT; + /* * Reserving the first client ID * 0: Reserved for MEI Bus Message communications diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index babbb0944b7f..6bb3e1ba9ded 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -62,6 +62,21 @@ enum mei_dev_state { MEI_DEV_POWER_UP }; +/** + * enum mei_dev_pxp_mode - MEI PXP mode state + * + * @MEI_DEV_PXP_DEFAULT: PCH based device, no initailization required + * @MEI_DEV_PXP_INIT: device requires initialization, send setup message to firmware + * @MEI_DEV_PXP_SETUP: device is in setup stage, waiting for firmware repsonse + * @MEI_DEV_PXP_READY: device initialized + */ +enum mei_dev_pxp_mode { + MEI_DEV_PXP_DEFAULT = 0, + MEI_DEV_PXP_INIT = 1, + MEI_DEV_PXP_SETUP = 2, + MEI_DEV_PXP_READY = 3, +}; + const char *mei_dev_state_str(int state); enum mei_file_transaction_states { @@ -454,6 +469,7 @@ struct mei_dev_timeouts { * @reset_count : number of consecutive resets * @dev_state : device state * @hbm_state : state of host bus message protocol + * @pxp_mode : PXP device mode * @init_clients_timer : HBM init handshake timeout * * @pg_event : power gating event @@ -537,6 +553,7 @@ struct mei_device { unsigned long reset_count; enum mei_dev_state dev_state; enum mei_hbm_state hbm_state; + enum mei_dev_pxp_mode pxp_mode; u16 init_clients_timer; /* diff --git a/include/linux/mei_aux.h b/include/linux/mei_aux.h index 4894d8bf4159..506912ad363b 100644 --- a/include/linux/mei_aux.h +++ b/include/linux/mei_aux.h @@ -12,6 +12,8 @@ * @aux_dev: - auxiliary device object * @irq: interrupt driving the mei auxiliary device * @bar: mmio resource bar reserved to mei auxiliary device + * @ext_op_mem: resource for extend operational memory + * used in graphics PXP mode. * @slow_firmware: The device has slow underlying firmware. * Such firmware will require to use larger operation timeouts. */ @@ -19,6 +21,7 @@ struct mei_aux_device { struct auxiliary_device aux_dev; int irq; struct resource bar; + struct resource ext_op_mem; bool slow_firmware; }; -- cgit v1.2.3