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drm: omapdrm: gem: Move global usergart variable to omap_drm_private 

The structure contains data related to a device instance, it shouldn't
be a global variable.

While at it rename the usergart structures with an omap_drm_ prefix.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Laurent Pinchart 2015-12-14 22:39:34 +02:00 committed by Tomi Valkeinen
parent 7ef93b0aa8
commit f4302747af
2 changed files with 36 additions and 21 deletions
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3
drivers/gpu/drm/omapdrm/omap_drv.h
View File

@ -36,6 +36,8 @@
#define MODULE_NAME "omapdrm"
struct omap_drm_usergart;
/* max # of mapper-id's that can be assigned.. todo, come up with a better
* (but still inexpensive) way to store/access per-buffer mapper private
* data..
@ -97,6 +99,7 @@ struct omap_drm_private {
/* list of GEM objects: */
struct list_head obj_list;
struct omap_drm_usergart *usergart;
bool has_dmm;
/* properties: */

54
drivers/gpu/drm/omapdrm/omap_gem.c
View File

@ -124,21 +124,22 @@ struct omap_gem_object {
* for later..
*/
#define NUM_USERGART_ENTRIES 2
struct usergart_entry {
struct omap_drm_usergart_entry {
struct tiler_block *block; /* the reserved tiler block */
dma_addr_t paddr;
struct drm_gem_object *obj; /* the current pinned obj */
pgoff_t obj_pgoff; /* page offset of obj currently
mapped in */
};
static struct {
struct usergart_entry entry[NUM_USERGART_ENTRIES];
struct omap_drm_usergart {
struct omap_drm_usergart_entry entry[NUM_USERGART_ENTRIES];
int height; /* height in rows */
int height_shift; /* ilog2(height in rows) */
int slot_shift; /* ilog2(width per slot) */
int stride_pfn; /* stride in pages */
int last; /* index of last used entry */
} *usergart;
};
/* -----------------------------------------------------------------------------
* Helpers
@ -181,10 +182,11 @@ static inline bool is_shmem(struct drm_gem_object *obj)
*/
static void evict_entry(struct drm_gem_object *obj,
enum tiler_fmt fmt, struct usergart_entry *entry)
enum tiler_fmt fmt, struct omap_drm_usergart_entry *entry)
{
struct omap_gem_object *omap_obj = to_omap_bo(obj);
int n = usergart[fmt].height;
struct omap_drm_private *priv = obj->dev->dev_private;
int n = priv->usergart[fmt].height;
size_t size = PAGE_SIZE * n;
loff_t off = mmap_offset(obj) +
(entry->obj_pgoff << PAGE_SHIFT);
@ -210,16 +212,19 @@ static void evict_entry(struct drm_gem_object *obj,
static void evict(struct drm_gem_object *obj)
{
struct omap_gem_object *omap_obj = to_omap_bo(obj);
struct omap_drm_private *priv = obj->dev->dev_private;
if (omap_obj->flags & OMAP_BO_TILED) {
enum tiler_fmt fmt = gem2fmt(omap_obj->flags);
int i;
if (!usergart)
if (!priv->usergart)
return;
for (i = 0; i < NUM_USERGART_ENTRIES; i++) {
struct usergart_entry *entry = &usergart[fmt].entry[i];
struct omap_drm_usergart_entry *entry =
&priv->usergart[fmt].entry[i];
if (entry->obj == obj)
evict_entry(obj, fmt, entry);
}
@ -408,7 +413,8 @@ static int fault_2d(struct drm_gem_object *obj,
struct vm_area_struct *vma, struct vm_fault *vmf)
{
struct omap_gem_object *omap_obj = to_omap_bo(obj);
struct usergart_entry *entry;
struct omap_drm_private *priv = obj->dev->dev_private;
struct omap_drm_usergart_entry *entry;
enum tiler_fmt fmt = gem2fmt(omap_obj->flags);
struct page *pages[64]; /* XXX is this too much to have on stack? */
unsigned long pfn;
@ -421,8 +427,8 @@ static int fault_2d(struct drm_gem_object *obj,
* that need to be mapped in to fill 4kb wide CPU page. If the slot
* height is 64, then 64 pages fill a 4kb wide by 64 row region.
*/
const int n = usergart[fmt].height;
const int n_shift = usergart[fmt].height_shift;
const int n = priv->usergart[fmt].height;
const int n_shift = priv->usergart[fmt].height_shift;
/*
* If buffer width in bytes > PAGE_SIZE then the virtual stride is
@ -443,11 +449,11 @@ static int fault_2d(struct drm_gem_object *obj,
base_pgoff = round_down(pgoff, m << n_shift);
/* figure out buffer width in slots */
slots = omap_obj->width >> usergart[fmt].slot_shift;
slots = omap_obj->width >> priv->usergart[fmt].slot_shift;
vaddr = vmf->virtual_address - ((pgoff - base_pgoff) << PAGE_SHIFT);
entry = &usergart[fmt].entry[usergart[fmt].last];
entry = &priv->usergart[fmt].entry[priv->usergart[fmt].last];
/* evict previous buffer using this usergart entry, if any: */
if (entry->obj)
@ -494,12 +500,13 @@ static int fault_2d(struct drm_gem_object *obj,
for (i = n; i > 0; i--) {
vm_insert_mixed(vma, (unsigned long)vaddr, pfn);
pfn += usergart[fmt].stride_pfn;
pfn += priv->usergart[fmt].stride_pfn;
vaddr += PAGE_SIZE * m;
}
/* simple round-robin: */
usergart[fmt].last = (usergart[fmt].last + 1) % NUM_USERGART_ENTRIES;
priv->usergart[fmt].last = (priv->usergart[fmt].last + 1)
% NUM_USERGART_ENTRIES;
return 0;
}
@ -1353,7 +1360,7 @@ struct drm_gem_object *omap_gem_new(struct drm_device *dev,
int ret;
if (flags & OMAP_BO_TILED) {
if (!usergart) {
if (!priv->usergart) {
dev_err(dev->dev, "Tiled buffers require DMM\n");
goto fail;
}
@ -1464,6 +1471,7 @@ int omap_gem_new_handle(struct drm_device *dev, struct drm_file *file,
void omap_gem_init(struct drm_device *dev)
{
struct omap_drm_private *priv = dev->dev_private;
struct omap_drm_usergart *usergart;
const enum tiler_fmt fmts[] = {
TILFMT_8BIT, TILFMT_16BIT, TILFMT_32BIT
};
@ -1492,10 +1500,11 @@ void omap_gem_init(struct drm_device *dev)
usergart[i].stride_pfn = tiler_stride(fmts[i], 0) >> PAGE_SHIFT;
usergart[i].slot_shift = ilog2((PAGE_SIZE / h) >> i);
for (j = 0; j < NUM_USERGART_ENTRIES; j++) {
struct usergart_entry *entry = &usergart[i].entry[j];
struct tiler_block *block =
tiler_reserve_2d(fmts[i], w, h,
PAGE_SIZE);
struct omap_drm_usergart_entry *entry;
struct tiler_block *block;
entry = &usergart[i].entry[j];
block = tiler_reserve_2d(fmts[i], w, h, PAGE_SIZE);
if (IS_ERR(block)) {
dev_err(dev->dev,
"reserve failed: %d, %d, %ld\n",
@ -1511,13 +1520,16 @@ void omap_gem_init(struct drm_device *dev)
}
}
priv->usergart = usergart;
priv->has_dmm = true;
}
void omap_gem_deinit(struct drm_device *dev)
{
struct omap_drm_private *priv = dev->dev_private;
/* I believe we can rely on there being no more outstanding GEM
* objects which could depend on usergart/dmm at this point.
*/
kfree(usergart);
kfree(priv->usergart);
}