psb_gfx-y += psb_bl.o \
psb_drv.o \
+ psb_gem.o \
psb_fb.o \
psb_2d.o \
psb_gtt.o \
.runtime_idle = psb_runtime_idle,
};
+static struct vm_operations_struct psb_gem_vm_ops = {
+ .fault = psb_gem_fault,
+ .open = drm_gem_vm_open,
+ .close = drm_gem_vm_close,
+};
+
static struct drm_driver driver = {
.driver_features = DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | \
- DRIVER_IRQ_VBL | DRIVER_MODESET,
+ DRIVER_IRQ_VBL | DRIVER_MODESET| DRIVER_GEM ,
.load = psb_driver_load,
.unload = psb_driver_unload,
.enable_vblank = psb_enable_vblank,
.disable_vblank = psb_disable_vblank,
.get_vblank_counter = psb_get_vblank_counter,
- .firstopen = NULL,
.lastclose = psb_lastclose,
.open = psb_driver_open,
+ .preclose = psb_driver_preclose,
.postclose = psb_driver_close,
.reclaim_buffers = drm_core_reclaim_buffers,
- .preclose = psb_driver_preclose,
+ .gem_init_object = psb_gem_init_object,
+ .gem_free_object = psb_gem_free_object,
+ .gem_vm_ops = &psb_gem_vm_ops,
+ .dumb_create = psb_gem_dumb_create,
+ .dumb_map_offset = psb_gem_dumb_map_gtt,
+ .dumb_destroy = psb_gem_dumb_destroy,
+
.fops = {
.owner = THIS_MODULE,
.open = psb_open,
struct mutex gtt_mutex;
struct resource *gtt_mem; /* Our PCI resource */
- struct gtt_range *gtt_handles[GTT_MAX];
struct psb_mmu_driver *mmu;
struct psb_mmu_pd *pf_pd;
psb_intel_lvds_connector_helper_funcs;
extern const struct drm_connector_funcs psb_intel_lvds_connector_funcs;
+/* psb_gem.c */
+extern int psb_gem_init_object(struct drm_gem_object *obj);
+extern void psb_gem_free_object(struct drm_gem_object *obj);
+extern int psb_gem_get_aperture(struct drm_device *dev, void *data,
+ struct drm_file *file);
+extern int psb_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
+ struct drm_mode_create_dumb *args);
+extern int psb_gem_dumb_destroy(struct drm_file *file, struct drm_device *dev,
+ uint32_t handle);
+extern int psb_gem_dumb_map_gtt(struct drm_file *file, struct drm_device *dev,
+ uint32_t handle, uint64_t *offset);
+extern int psb_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
+
/*
- *Debug print bits setting
+ * Debug print bits setting
*/
#define PSB_D_GENERAL (1 << 0)
#define PSB_D_INIT (1 << 1)
VM_MIXEDMAP | VM_DONTEXPAND;
} else {
/* GTT memory backed by kernel/user pages, needs a different
- approach ? */
+ approach ? - GEM ? */
}
return 0;
return NULL;
}
-static struct drm_framebuffer *psb_user_framebuffer_create
- (struct drm_device *dev, struct drm_file *filp,
- struct drm_mode_fb_cmd *r)
-{
- return NULL;
-#if 0
- struct ttm_buffer_object *bo = NULL;
- uint64_t size;
-
- bo = ttm_buffer_object_lookup(psb_fpriv(filp)->tfile, r->handle);
- if (!bo)
- return NULL;
-
- /* JB: TODO not drop, make smarter */
- size = ((uint64_t) bo->num_pages) << PAGE_SHIFT;
- if (size < r->width * r->height * 4)
- return NULL;
-
- /* JB: TODO not drop, refcount buffer */
- return psb_framebuffer_create(dev, r, bo);
-
- struct psb_framebuffer *psbfb;
- struct drm_framebuffer *fb;
- struct fb_info *info;
- void *psKernelMemInfo = NULL;
- void * hKernelMemInfo = (void *)r->handle;
- struct drm_psb_private *dev_priv
- = (struct drm_psb_private *)dev->dev_private;
- struct psb_fbdev *fbdev = dev_priv->fbdev;
- struct psb_gtt *pg = dev_priv->pg;
- int ret;
- uint32_t offset;
- uint64_t size;
-
- ret = psb_get_meminfo_by_handle(hKernelMemInfo, &psKernelMemInfo);
- if (ret) {
- DRM_ERROR("Cannot get meminfo for handle 0x%x\n",
- (u32)hKernelMemInfo);
- return NULL;
- }
-
- DRM_DEBUG("Got Kernel MemInfo for handle %lx\n",
- (u32)hKernelMemInfo);
-
- /* JB: TODO not drop, make smarter */
- size = psKernelMemInfo->ui32AllocSize;
- if (size < r->height * r->pitch)
- return NULL;
-
- /* JB: TODO not drop, refcount buffer */
- /* return psb_framebuffer_create(dev, r, bo); */
-
- fb = psb_framebuffer_create(dev, r, (void *)psKernelMemInfo);
- if (!fb) {
- DRM_ERROR("failed to allocate fb.\n");
- return NULL;
- }
-
- psbfb = to_psb_fb(fb);
- psbfb->size = size;
- psbfb->hKernelMemInfo = hKernelMemInfo;
-
- DRM_DEBUG("Mapping to gtt..., KernelMemInfo %p\n", psKernelMemInfo);
-
- /*if not VRAM, map it into tt aperture*/
- if (psKernelMemInfo->pvLinAddrKM != pg->vram_addr) {
- ret = psb_gtt_map_meminfo(dev, hKernelMemInfo, &offset);
- if (ret) {
- DRM_ERROR("map meminfo for 0x%x failed\n",
- (u32)hKernelMemInfo);
- return NULL;
- }
- psbfb->offset = (offset << PAGE_SHIFT);
- } else {
- psbfb->offset = 0;
- }
- info = framebuffer_alloc(0, &dev->pdev->dev);
- if (!info)
- return NULL;
-
- strcpy(info->fix.id, "psbfb");
-
- info->flags = FBINFO_DEFAULT;
- info->fix.accel = FB_ACCEL_I830; /*FIXMEAC*/
- info->fbops = &psbfb_ops;
-
- info->fix.smem_start = dev->mode_config.fb_base;
- info->fix.smem_len = size;
-
- info->screen_base = psKernelMemInfo->pvLinAddrKM;
- info->screen_size = size;
-
- drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
- drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
- fb->width, fb->height);
-
- info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
- info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
-
- info->pixmap.size = 64 * 1024;
- info->pixmap.buf_align = 8;
- info->pixmap.access_align = 32;
- info->pixmap.flags = FB_PIXMAP_SYSTEM;
- info->pixmap.scan_align = 1;
-
- psbfb->fbdev = info;
- fbdev->pfb = psbfb;
-
- fbdev->psb_fb_helper.fb = fb;
- fbdev->psb_fb_helper.fbdev = info;
- MRSTLFBHandleChangeFB(dev, psbfb);
-
- return fb;
-#endif
-}
-
+/**
+ * psbfb_create - create a framebuffer
+ * @fbdev: the framebuffer device
+ * @sizes: specification of the layout
+ *
+ * Create a framebuffer to the specifications provided
+ */
static int psbfb_create(struct psb_fbdev *fbdev,
struct drm_fb_helper_surface_size *sizes)
{
return ret;
}
+/**
+ * psb_user_framebuffer_create - create framebuffer
+ * @dev: our DRM device
+ * @filp: client file
+ * @cmd: mode request
+ *
+ * Create a new framebuffer backed by a userspace GEM object
+ */
+static struct drm_framebuffer *psb_user_framebuffer_create
+ (struct drm_device *dev, struct drm_file *filp,
+ struct drm_mode_fb_cmd *cmd)
+{
+ struct gtt_range *r;
+ struct drm_gem_object *obj;
+ struct psb_framebuffer *psbfb;
+
+ /* Find the GEM object and thus the gtt range object that is
+ to back this space */
+ obj = drm_gem_object_lookup(dev, filp, cmd->handle);
+ if (obj == NULL)
+ return ERR_PTR(-ENOENT);
+
+ /* Allocate a framebuffer */
+ psbfb = kzalloc(sizeof(*psbfb), GFP_KERNEL);
+ if (psbfb == NULL) {
+ drm_gem_object_unreference_unlocked(obj);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ /* Let the core code do all the work */
+ r = container_of(obj, struct gtt_range, gem);
+ if (psb_framebuffer_create(dev, cmd, r) == NULL) {
+ drm_gem_object_unreference_unlocked(obj);
+ kfree(psbfb);
+ return ERR_PTR(-EINVAL);
+ }
+ /* Return the drm_framebuffer contained within the psb fbdev which
+ has been initialized by the framebuffer creation */
+ return &psbfb->base;
+}
+
static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
u16 blue, int regno)
{
}
/*EXPORT_SYMBOL(psbfb_remove); */
+/**
+ * psb_user_framebuffer_create_handle - add hamdle to a framebuffer
+ * @fb: framebuffer
+ * @file_priv: our DRM file
+ * @handle: returned handle
+ *
+ * Our framebuffer object is a GTT range which also contains a GEM
+ * object. We need to turn it into a handle for userspace. GEM will do
+ * the work for us
+ */
static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
struct drm_file *file_priv,
unsigned int *handle)
{
- /* JB: TODO currently we can't go from a bo to a handle with ttm */
- (void) file_priv;
- *handle = 0;
- return 0;
+ struct psb_framebuffer *psbfb = to_psb_fb(fb);
+ struct gtt_range *r = psbfb->mem;
+ return drm_gem_handle_create(file_priv, &r->gem, handle);
}
+/**
+ * psb_user_framebuffer_destroy - destruct user created fb
+ * @fb: framebuffer
+ *
+ * User framebuffers are backed by GEM objects so all we have to do is
+ * clean up a bit and drop the reference, GEM will handle the fallout
+ */
static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
{
struct drm_device *dev = fb->dev;
struct psb_framebuffer *psbfb = to_psb_fb(fb);
+ struct gtt_range *r = psbfb->mem;
- /*ummap gtt pages*/
- psb_gtt_unmap_meminfo(dev, psbfb->hKernelMemInfo);
if (psbfb->fbdev)
psbfb_remove(dev, fb);
- /* JB: TODO not drop, refcount buffer */
+ /* Let DRM do its clean up */
drm_framebuffer_cleanup(fb);
+ /* We are no longer using the resource in GEM */
+ drm_gem_object_unreference_unlocked(&r->gem);
+
kfree(fb);
}
--- /dev/null
+/*
+ * psb backlight interface
+ *
+ * Copyright (c) 2011, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors: Alan Cox
+ *
+ * TODO:
+ * - we don't actually put GEM objects into the GART yet
+ * - we need to work out if the MMU is relevant as well (eg for
+ * accelerated operations on a GEM object)
+ * - cache coherency
+ *
+ * ie this is just an initial framework to get us going.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm.h>
+#include "psb_drm.h"
+#include "psb_drv.h"
+
+int psb_gem_init_object(struct drm_gem_object *obj)
+{
+ return -EINVAL;
+}
+
+void psb_gem_free_object(struct drm_gem_object *obj)
+{
+ drm_gem_object_release(obj);
+}
+
+int psb_gem_get_aperture(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ return -EINVAL;
+}
+
+/**
+ * psb_gem_dumb_map_gtt - buffer mapping for dumb interface
+ * @file: our drm client file
+ * @dev: drm device
+ * @handle: GEM handle to the object (from dumb_create)
+ *
+ * Do the necessary setup to allow the mapping of the frame buffer
+ * into user memory. We don't have to do much here at the moment.
+ */
+int psb_gem_dumb_map_gtt(struct drm_file *file, struct drm_device *dev,
+ uint32_t handle, uint64_t *offset)
+{
+ struct drm_gem_object *obj;
+ if (!(dev->driver->driver_features & DRIVER_GEM))
+ return -ENODEV;
+ /* GEM does all our handle to object mapping */
+ obj = drm_gem_object_lookup(dev, file, handle);
+ if (obj == NULL)
+ return -ENOENT;
+ /* What validation is needed here ? */
+
+ /* GEM works out the hash offsets for us */
+ *offset = (u64)obj->map_list.hash.key << PAGE_SHIFT;
+ drm_gem_object_unreference(obj);
+ return 0;
+}
+
+/**
+ * psb_gem_create - create a mappable object
+ * @file: the DRM file of the client
+ * @dev: our device
+ * @size: the size requested
+ * @handlep: returned handle (opaque number)
+ *
+ * Create a GEM object, fill in the boilerplate and attach a handle to
+ * it so that userspace can speak about it. This does the core work
+ * for the various methods that do/will create GEM objects for things
+ */
+static int psb_gem_create(struct drm_file *file,
+ struct drm_device *dev, uint64_t size, uint32_t *handlep)
+{
+ struct gtt_range *r;
+ int ret;
+ u32 handle;
+
+ size = roundup(size, PAGE_SIZE);
+
+ /* Allocate our object - for now a direct gtt range which is not
+ stolen memory backed */
+ r = psb_gtt_alloc_range(dev, size, "gem", 0);
+ if (IS_ERR(r))
+ return PTR_ERR(r);
+ /* Initialize the extra goodies GEM needs to do all the hard work */
+ if (drm_gem_object_init(dev, &r->gem, size) != 0) {
+ psb_gtt_free_range(dev, r);
+ /* GEM doesn't give an error code and we don't have an
+ EGEMSUCKS so make something up for now - FIXME */
+ return -ENOMEM;
+ }
+ /* Give the object a handle so we can carry it more easily */
+ ret = drm_gem_handle_create(file, &r->gem, &handle);
+ if (ret) {
+ drm_gem_object_release(&r->gem);
+ psb_gtt_free_range(dev, r);
+ return ret;
+ }
+ /* We have the initial and handle reference but need only one now */
+ drm_gem_object_unreference(&r->gem);
+ *handlep = handle;
+ return 0;
+}
+
+/**
+ * psb_gem_dumb_create - create a dumb buffer
+ * @drm_file: our client file
+ * @dev: our device
+ * @args: the requested arguments copied from userspace
+ *
+ * Allocate a buffer suitable for use for a frame buffer of the
+ * form described by user space. Give userspace a handle by which
+ * to reference it.
+ */
+int psb_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
+ struct drm_mode_create_dumb *args)
+{
+ args->pitch = ALIGN(args->width & ((args->bpp + 1) / 8), 64);
+ args->size = args->pitch * args->height;
+ return psb_gem_create(file, dev, args->size, &args->handle);
+}
+
+/**
+ * psb_gem_dumb_destroy - destroy a dumb buffer
+ * @file: client file
+ * @dev: our DRM device
+ * @handle: the object handle
+ *
+ * Destroy a handle that was created via psb_gem_dumb_create, at least
+ * we hope it was created that way. i915 seems to assume the caller
+ * does the checking but that might be worth review ! FIXME
+ */
+int psb_gem_dumb_destroy(struct drm_file *file, struct drm_device *dev,
+ uint32_t handle)
+{
+ /* No special work needed, drop the reference and see what falls out */
+ return drm_gem_handle_delete(file, handle);
+}
+
+/**
+ * psb_gem_fault - pagefault handler for GEM objects
+ * @vma: the VMA of the GEM object
+ * @vmf: fault detail
+ *
+ * Invoked when a fault occurs on an mmap of a GEM managed area. GEM
+ * does most of the work for us including the actual map/unmap calls
+ * but we need to do the actual page work.
+ *
+ * This code eventually needs to handle faulting objects in and out
+ * of the GART and repacking it when we run out of space. We can put
+ * that off for now and for our simple uses
+ *
+ * The VMA was set up by GEM. In doing so it also ensured that the
+ * vma->vm_private_data points to the GEM object that is backing this
+ * mapping.
+ */
+int psb_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+{
+ struct drm_gem_object *obj;
+ struct gtt_range *r;
+ int ret;
+ unsigned long pfn;
+ pgoff_t page_offset;
+
+ obj = vma->vm_private_data; /* GEM object */
+ r = container_of(obj, struct gtt_range, gem); /* Get the gtt range */
+
+ /* FIXME: Locking. We may also need to repack the GART sometimes */
+
+ /* Page relative to the VMA start */
+ page_offset = ((unsigned long) vmf->virtual_address - vma->vm_start)
+ >> PAGE_SHIFT;
+
+ /* Bus address of the page is gart + object offset + page offset */
+ /* Assumes gtt allocations are page aligned */
+ pfn = (r->resource.start >> PAGE_SHIFT) + page_offset;
+
+ ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn);
+ switch (ret) {
+ case 0:
+ case -ERESTARTSYS:
+ case -EINTR:
+ return VM_FAULT_NOPAGE;
+ case -ENOMEM:
+ return VM_FAULT_OOM;
+ default:
+ return VM_FAULT_SIGBUS;
+ }
+}
}
/*
- * GTT resource allocator
+ * GTT resource allocator - allocate and manage GTT address space
*/
/**
- * psb_gtt_alloc_handle - allocate a handle to a GTT map
- * @dev: our DRM device
- * @gt: Our GTT range
- *
- * Assign a handle to a gtt range object. For the moment we use a very
- * simplistic interface.
- */
-int psb_gtt_alloc_handle(struct drm_device *dev, struct gtt_range *gt)
-{
- struct drm_psb_private *dev_priv = dev->dev_private;
- int h;
-
- mutex_lock(&dev_priv->gtt_mutex);
- for (h = 0; h < GTT_MAX; h++) {
- if (dev_priv->gtt_handles[h] == NULL) {
- dev_priv->gtt_handles[h] = gt;
- gt->handle = h;
- kref_get(>->kref);
- mutex_unlock(&dev_priv->gtt_mutex);
- return h;
- }
- }
- mutex_unlock(&dev_priv->gtt_mutex);
- return -ENOSPC;
-}
-
-/**
- * psb_gtt_release_handle - release a handle to a GTT map
- * @dev: our DRM device
- * @gt: Our GTT range
- *
- * Remove the handle from a gtt range object
- */
-int psb_gtt_release_handle(struct drm_device *dev, struct gtt_range *gt)
-{
- struct drm_psb_private *dev_priv = dev->dev_private;
-
- if (gt->handle < 0 || gt->handle >= GTT_MAX) {
- gt->handle = -1;
- WARN_ON(1);
- return -EINVAL;
- }
- mutex_lock(&dev_priv->gtt_mutex);
- dev_priv->gtt_handles[gt->handle] = NULL;
- gt->handle = -1;
- mutex_unlock(&dev_priv->gtt_mutex);
- psb_gtt_kref_put(gt);
- return 0;
-}
-
-/**
- * psb_gtt_lookup_handle - look up a GTT handle
- * @dev: our DRM device
- * @handle: our handle
- *
- * Look up a gtt handle and return the gtt or NULL. The object returned
- * has a reference held so the caller must drop this when finished.
- */
-struct gtt_range *psb_gtt_lookup_handle(struct drm_device *dev, int handle)
-{
- struct drm_psb_private *dev_priv = dev->dev_private;
- struct gtt_range *gt;
-
- if (handle < 0 || handle > GTT_MAX)
- return ERR_PTR(-EINVAL);
-
- mutex_lock(&dev_priv->gtt_mutex);
- gt = dev_priv->gtt_handles[handle];
- kref_get(>->kref);
- mutex_unlock(&dev_priv->gtt_mutex);
-
- if (gt == NULL)
- return ERR_PTR(-ENOENT);
- return gt;
-}
-
-/**
* psb_gtt_alloc_range - allocate GTT address space
* @dev: Our DRM device
* @len: length (bytes) of address space required
gt = kzalloc(sizeof(struct gtt_range), GFP_KERNEL);
if (gt == NULL)
return NULL;
- gt->handle = -1;
gt->resource.name = name;
+ gt->stolen = backed;
+ gt->in_gart = backed;
kref_init(>->kref);
ret = allocate_resource(dev_priv->gtt_mem, >->resource,
static void psb_gtt_destroy(struct kref *kref)
{
struct gtt_range *gt = container_of(kref, struct gtt_range, kref);
+ WARN_ON(gt->in_gart && !gt->stolen);
release_resource(>->resource);
kfree(gt);
}
*/
void psb_gtt_free_range(struct drm_device *dev, struct gtt_range *gt)
{
- if (gt->handle != -1)
- psb_gtt_release_handle(dev, gt);
psb_gtt_kref_put(gt);
}
struct gtt_range {
struct resource resource;
u32 offset;
- int handle;
struct kref kref;
+ struct drm_gem_object gem; /* GEM high level stuff */
+ int in_gart; /* Currently in the GART */
+ int stolen; /* Backed from stolen RAM */
};
-/* Most GTT handles we allow allocation of - for now five is fine: we need
- - Two framebuffers
- - Maybe an upload area
- - One cursor (eventually)
- - One fence page (possibly)
-*/
-
-#define GTT_MAX 5
-
-extern int psb_gtt_alloc_handle(struct drm_device *dev, struct gtt_range *gt);
-extern int psb_gtt_release_handle(struct drm_device *dev, struct gtt_range *gt);
-extern struct gtt_range *psb_gtt_lookup_handle(struct drm_device *dev,
- int handle);
extern struct gtt_range *psb_gtt_alloc_range(struct drm_device *dev, int len,
const char *name, int backed);
extern void psb_gtt_kref_put(struct gtt_range *gt);
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / commitdiff