static bool
nouveau_agp_enabled(struct nouveau_drm *drm)
{
struct drm_device *dev = drm->dev;
if (!dev->pdev || !drm_pci_device_is_agp(dev) || !dev->agp)
return false;
if (drm->agp.stat == UNKNOWN) {
if (!nouveau_agpmode)
return false;
#ifdef __powerpc__
/* Disable AGP by default on all PowerPC machines for
* now -- At least some UniNorth-2 AGP bridges are
* known to be broken: DMA from the host to the card
* works just fine, but writeback from the card to the
* host goes straight to memory untranslated bypassing
* the GATT somehow, making them quite painful to deal
* with...
*/
if (nouveau_agpmode == -1)
return false;
#endif
return true;
}
return (drm->agp.stat == ENABLED);
}
/**
* radeon_driver_load_kms - Main load function for KMS.
*
* @dev: drm dev pointer
* @flags: device flags
*
* This is the main load function for KMS (all asics).
* It calls radeon_device_init() to set up the non-display
* parts of the chip (asic init, CP, writeback, etc.), and
* radeon_modeset_init() to set up the display parts
* (crtcs, encoders, hotplug detect, etc.).
* Returns 0 on success, error on failure.
*/
int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
{
struct radeon_device *rdev;
int r, acpi_status;
rdev = malloc(sizeof(struct radeon_device), DRM_MEM_DRIVER, M_NOWAIT | M_ZERO);
if (rdev == NULL) {
return -ENOMEM;
}
dev->dev_private = (void *)rdev;
/* update BUS flag */
if (drm_pci_device_is_agp(dev)) {
DRM_INFO("RADEON_IS_AGP\n");
flags |= RADEON_IS_AGP;
} else if (drm_pci_device_is_pcie(dev)) {
DRM_INFO("RADEON_IS_PCIE\n");
flags |= RADEON_IS_PCIE;
} else {
DRM_INFO("RADEON_IS_PCI\n");
flags |= RADEON_IS_PCI;
}
/* radeon_device_init should report only fatal error
* like memory allocation failure or iomapping failure,
* or memory manager initialization failure, it must
* properly initialize the GPU MC controller and permit
* VRAM allocation
*/
r = radeon_device_init(rdev, dev, flags);
if (r) {
dev_err(dev->dev, "Fatal error during GPU init\n");
goto out;
}
/* Again modeset_init should fail only on fatal error
* otherwise it should provide enough functionalities
* for shadowfb to run
*/
r = radeon_modeset_init(rdev);
if (r)
dev_err(dev->dev, "Fatal error during modeset init\n");
/* Call ACPI methods: require modeset init
* but failure is not fatal
*/
if (!r) {
acpi_status = radeon_acpi_init(rdev);
if (acpi_status)
dev_dbg(dev->dev,
"Error during ACPI methods call\n");
}
out:
if (r)
radeon_driver_unload_kms(dev);
return r;
}
static bool
nouveau_agp_enabled(struct nouveau_drm *drm)
{
struct drm_device *dev = drm->dev;
if (!drm_pci_device_is_agp(dev) || !dev->agp)
return false;
if (drm->agp.stat == UNKNOWN) {
if (!nouveau_agpmode)
return false;
return true;
}
return (drm->agp.stat == ENABLED);
}
/**
* radeon_driver_load_kms - Main load function for KMS.
*
* @dev: drm dev pointer
* @flags: device flags
*
* This is the main load function for KMS (all asics).
* It calls radeon_device_init() to set up the non-display
* parts of the chip (asic init, CP, writeback, etc.), and
* radeon_modeset_init() to set up the display parts
* (crtcs, encoders, hotplug detect, etc.).
* Returns 0 on success, error on failure.
*/
int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
{
struct radeon_device *rdev;
int r, acpi_status;
rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
if (rdev == NULL) {
return -ENOMEM;
}
dev->dev_private = (void *)rdev;
/* update BUS flag */
if (drm_pci_device_is_agp(dev)) {
DRM_INFO("RADEON_IS_AGP\n");
flags |= RADEON_IS_AGP;
} else if (pci_is_pcie(dev->dev->bsddev)) {
DRM_INFO("RADEON_IS_PCIE\n");
flags |= RADEON_IS_PCIE;
} else {
DRM_INFO("RADEON_IS_PCI\n");
flags |= RADEON_IS_PCI;
}
#ifdef PM_TODO
if ((radeon_runtime_pm != 0) &&
radeon_has_atpx() &&
((flags & RADEON_IS_IGP) == 0))
#endif
/* radeon_device_init should report only fatal error
* like memory allocation failure or iomapping failure,
* or memory manager initialization failure, it must
* properly initialize the GPU MC controller and permit
* VRAM allocation
*/
r = radeon_device_init(rdev, dev, dev->pdev, flags);
if (r) {
dev_err(&dev->pdev->dev, "Fatal error during GPU init\n");
goto out;
}
/* Again modeset_init should fail only on fatal error
* otherwise it should provide enough functionalities
* for shadowfb to run
*/
r = radeon_modeset_init(rdev);
if (r)
dev_err(&dev->pdev->dev, "Fatal error during modeset init\n");
/* Call ACPI methods: require modeset init
* but failure is not fatal
*/
if (!r) {
acpi_status = radeon_acpi_init(rdev);
if (acpi_status)
dev_dbg(&dev->pdev->dev,
"Error during ACPI methods call\n");
}
#ifdef PM_TODO
if (radeon_is_px(dev)) {
pm_runtime_use_autosuspend(dev->dev);
pm_runtime_set_autosuspend_delay(dev->dev, 5000);
pm_runtime_set_active(dev->dev);
pm_runtime_allow(dev->dev);
pm_runtime_mark_last_busy(dev->dev);
pm_runtime_put_autosuspend(dev->dev);
}
#endif
out:
if (r)
radeon_driver_unload_kms(dev);
return r;
}
static int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
{
struct drm_device *ddev = p->rdev->ddev;
struct radeon_cs_chunk *chunk;
struct radeon_cs_buckets buckets;
unsigned i, j;
bool duplicate;
if (p->chunk_relocs_idx == -1) {
return 0;
}
chunk = &p->chunks[p->chunk_relocs_idx];
p->dma_reloc_idx = 0;
/* FIXME: we assume that each relocs use 4 dwords */
p->nrelocs = chunk->length_dw / 4;
p->relocs_ptr = kcalloc(p->nrelocs, sizeof(void *), GFP_KERNEL);
if (p->relocs_ptr == NULL) {
return -ENOMEM;
}
p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_cs_reloc), GFP_KERNEL);
if (p->relocs == NULL) {
return -ENOMEM;
}
radeon_cs_buckets_init(&buckets);
for (i = 0; i < p->nrelocs; i++) {
struct drm_radeon_cs_reloc *r;
unsigned priority;
duplicate = false;
r = (struct drm_radeon_cs_reloc *)&chunk->kdata[i*4];
for (j = 0; j < i; j++) {
if (r->handle == p->relocs[j].handle) {
p->relocs_ptr[i] = &p->relocs[j];
duplicate = true;
break;
}
}
if (duplicate) {
p->relocs[i].handle = 0;
continue;
}
p->relocs[i].gobj = drm_gem_object_lookup(ddev, p->filp,
r->handle);
if (p->relocs[i].gobj == NULL) {
DRM_ERROR("gem object lookup failed 0x%x\n",
r->handle);
return -ENOENT;
}
p->relocs_ptr[i] = &p->relocs[i];
p->relocs[i].robj = gem_to_radeon_bo(p->relocs[i].gobj);
/* The userspace buffer priorities are from 0 to 15. A higher
* number means the buffer is more important.
* Also, the buffers used for write have a higher priority than
* the buffers used for read only, which doubles the range
* to 0 to 31. 32 is reserved for the kernel driver.
*/
priority = (r->flags & 0xf) * 2 + !!r->write_domain;
/* the first reloc of an UVD job is the msg and that must be in
VRAM, also but everything into VRAM on AGP cards to avoid
image corruptions */
if (p->ring == R600_RING_TYPE_UVD_INDEX &&
(i == 0 || drm_pci_device_is_agp(p->rdev->ddev))) {
/* TODO: is this still needed for NI+ ? */
p->relocs[i].prefered_domains =
RADEON_GEM_DOMAIN_VRAM;
p->relocs[i].allowed_domains =
RADEON_GEM_DOMAIN_VRAM;
/* prioritize this over any other relocation */
priority = RADEON_CS_MAX_PRIORITY;
} else {
uint32_t domain = r->write_domain ?
r->write_domain : r->read_domains;
if (domain & RADEON_GEM_DOMAIN_CPU) {
DRM_ERROR("RADEON_GEM_DOMAIN_CPU is not valid "
"for command submission\n");
return -EINVAL;
}
p->relocs[i].prefered_domains = domain;
if (domain == RADEON_GEM_DOMAIN_VRAM)
domain |= RADEON_GEM_DOMAIN_GTT;
p->relocs[i].allowed_domains = domain;
}
p->relocs[i].tv.bo = &p->relocs[i].robj->tbo;
p->relocs[i].handle = r->handle;
radeon_cs_buckets_add(&buckets, &p->relocs[i].tv.head,
priority);
}
radeon_cs_buckets_get_list(&buckets, &p->validated);
if (p->cs_flags & RADEON_CS_USE_VM)
p->vm_bos = radeon_vm_get_bos(p->rdev, p->ib.vm,
&p->validated);
return radeon_bo_list_validate(p->rdev, &p->ticket, &p->validated, p->ring);
}