mirror of https://gitee.com/openkylin/linux.git
drm/tegra: Remove memory allocation from Falcon library
Having to provide allocator hooks to the Falcon library is somewhat cumbersome and it doesn't give the users of the library a lot of flexibility to deal with allocations. Instead, remove the notion of Falcon "operations" and let drivers deal with the memory allocations themselves. Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
parent
06867a362d
commit
20e7dce255
|
@ -59,26 +59,11 @@ static void falcon_copy_firmware_image(struct falcon *falcon,
|
|||
const struct firmware *firmware)
|
||||
{
|
||||
u32 *firmware_vaddr = falcon->firmware.vaddr;
|
||||
dma_addr_t daddr;
|
||||
size_t i;
|
||||
int err;
|
||||
|
||||
/* copy the whole thing taking into account endianness */
|
||||
for (i = 0; i < firmware->size / sizeof(u32); i++)
|
||||
firmware_vaddr[i] = le32_to_cpu(((u32 *)firmware->data)[i]);
|
||||
|
||||
/* ensure that caches are flushed and falcon can see the firmware */
|
||||
daddr = dma_map_single(falcon->dev, firmware_vaddr,
|
||||
falcon->firmware.size, DMA_TO_DEVICE);
|
||||
err = dma_mapping_error(falcon->dev, daddr);
|
||||
if (err) {
|
||||
dev_err(falcon->dev, "failed to map firmware: %d\n", err);
|
||||
return;
|
||||
}
|
||||
dma_sync_single_for_device(falcon->dev, daddr,
|
||||
falcon->firmware.size, DMA_TO_DEVICE);
|
||||
dma_unmap_single(falcon->dev, daddr, falcon->firmware.size,
|
||||
DMA_TO_DEVICE);
|
||||
}
|
||||
|
||||
static int falcon_parse_firmware_image(struct falcon *falcon)
|
||||
|
@ -125,6 +110,8 @@ int falcon_read_firmware(struct falcon *falcon, const char *name)
|
|||
if (err < 0)
|
||||
return err;
|
||||
|
||||
falcon->firmware.size = falcon->firmware.firmware->size;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -133,16 +120,6 @@ int falcon_load_firmware(struct falcon *falcon)
|
|||
const struct firmware *firmware = falcon->firmware.firmware;
|
||||
int err;
|
||||
|
||||
falcon->firmware.size = firmware->size;
|
||||
|
||||
/* allocate iova space for the firmware */
|
||||
falcon->firmware.vaddr = falcon->ops->alloc(falcon, firmware->size,
|
||||
&falcon->firmware.paddr);
|
||||
if (IS_ERR(falcon->firmware.vaddr)) {
|
||||
dev_err(falcon->dev, "DMA memory mapping failed\n");
|
||||
return PTR_ERR(falcon->firmware.vaddr);
|
||||
}
|
||||
|
||||
/* copy firmware image into local area. this also ensures endianness */
|
||||
falcon_copy_firmware_image(falcon, firmware);
|
||||
|
||||
|
@ -150,27 +127,17 @@ int falcon_load_firmware(struct falcon *falcon)
|
|||
err = falcon_parse_firmware_image(falcon);
|
||||
if (err < 0) {
|
||||
dev_err(falcon->dev, "failed to parse firmware image\n");
|
||||
goto err_setup_firmware_image;
|
||||
return err;
|
||||
}
|
||||
|
||||
release_firmware(firmware);
|
||||
falcon->firmware.firmware = NULL;
|
||||
|
||||
return 0;
|
||||
|
||||
err_setup_firmware_image:
|
||||
falcon->ops->free(falcon, falcon->firmware.size,
|
||||
falcon->firmware.paddr, falcon->firmware.vaddr);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
int falcon_init(struct falcon *falcon)
|
||||
{
|
||||
/* check mandatory ops */
|
||||
if (!falcon->ops || !falcon->ops->alloc || !falcon->ops->free)
|
||||
return -EINVAL;
|
||||
|
||||
falcon->firmware.vaddr = NULL;
|
||||
|
||||
return 0;
|
||||
|
@ -178,17 +145,8 @@ int falcon_init(struct falcon *falcon)
|
|||
|
||||
void falcon_exit(struct falcon *falcon)
|
||||
{
|
||||
if (falcon->firmware.firmware) {
|
||||
if (falcon->firmware.firmware)
|
||||
release_firmware(falcon->firmware.firmware);
|
||||
falcon->firmware.firmware = NULL;
|
||||
}
|
||||
|
||||
if (falcon->firmware.vaddr) {
|
||||
falcon->ops->free(falcon, falcon->firmware.size,
|
||||
falcon->firmware.paddr,
|
||||
falcon->firmware.vaddr);
|
||||
falcon->firmware.vaddr = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
int falcon_boot(struct falcon *falcon)
|
||||
|
|
|
@ -74,15 +74,6 @@ struct falcon_fw_os_header_v1 {
|
|||
u32 data_size;
|
||||
};
|
||||
|
||||
struct falcon;
|
||||
|
||||
struct falcon_ops {
|
||||
void *(*alloc)(struct falcon *falcon, size_t size,
|
||||
dma_addr_t *paddr);
|
||||
void (*free)(struct falcon *falcon, size_t size,
|
||||
dma_addr_t paddr, void *vaddr);
|
||||
};
|
||||
|
||||
struct falcon_firmware_section {
|
||||
unsigned long offset;
|
||||
size_t size;
|
||||
|
@ -107,8 +98,6 @@ struct falcon {
|
|||
/* Set by falcon client */
|
||||
struct device *dev;
|
||||
void __iomem *regs;
|
||||
const struct falcon_ops *ops;
|
||||
void *data;
|
||||
|
||||
struct falcon_firmware firmware;
|
||||
};
|
||||
|
|
|
@ -158,27 +158,6 @@ static int vic_boot(struct vic *vic)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void *vic_falcon_alloc(struct falcon *falcon, size_t size,
|
||||
dma_addr_t *iova)
|
||||
{
|
||||
struct tegra_drm *tegra = falcon->data;
|
||||
|
||||
return tegra_drm_alloc(tegra, size, iova);
|
||||
}
|
||||
|
||||
static void vic_falcon_free(struct falcon *falcon, size_t size,
|
||||
dma_addr_t iova, void *va)
|
||||
{
|
||||
struct tegra_drm *tegra = falcon->data;
|
||||
|
||||
return tegra_drm_free(tegra, size, va, iova);
|
||||
}
|
||||
|
||||
static const struct falcon_ops vic_falcon_ops = {
|
||||
.alloc = vic_falcon_alloc,
|
||||
.free = vic_falcon_free
|
||||
};
|
||||
|
||||
static int vic_init(struct host1x_client *client)
|
||||
{
|
||||
struct tegra_drm_client *drm = host1x_to_drm_client(client);
|
||||
|
@ -246,6 +225,15 @@ static int vic_exit(struct host1x_client *client)
|
|||
host1x_channel_put(vic->channel);
|
||||
host1x_client_iommu_detach(client);
|
||||
|
||||
if (client->group)
|
||||
tegra_drm_free(tegra, vic->falcon.firmware.size,
|
||||
vic->falcon.firmware.vaddr,
|
||||
vic->falcon.firmware.paddr);
|
||||
else
|
||||
dma_free_coherent(vic->dev, vic->falcon.firmware.size,
|
||||
vic->falcon.firmware.vaddr,
|
||||
vic->falcon.firmware.paddr);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -256,25 +244,75 @@ static const struct host1x_client_ops vic_client_ops = {
|
|||
|
||||
static int vic_load_firmware(struct vic *vic)
|
||||
{
|
||||
struct host1x_client *client = &vic->client.base;
|
||||
struct tegra_drm *tegra = vic->client.drm;
|
||||
dma_addr_t phys;
|
||||
size_t size;
|
||||
void *virt;
|
||||
int err;
|
||||
|
||||
if (vic->falcon.data)
|
||||
if (vic->falcon.firmware.vaddr)
|
||||
return 0;
|
||||
|
||||
vic->falcon.data = vic->client.drm;
|
||||
|
||||
err = falcon_read_firmware(&vic->falcon, vic->config->firmware);
|
||||
if (err < 0)
|
||||
goto cleanup;
|
||||
return err;
|
||||
|
||||
size = vic->falcon.firmware.size;
|
||||
|
||||
if (!client->group) {
|
||||
virt = dma_alloc_coherent(vic->dev, size, &phys, GFP_KERNEL);
|
||||
|
||||
err = dma_mapping_error(vic->dev, phys);
|
||||
if (err < 0)
|
||||
return err;
|
||||
} else {
|
||||
virt = tegra_drm_alloc(tegra, size, &phys);
|
||||
}
|
||||
|
||||
vic->falcon.firmware.vaddr = virt;
|
||||
vic->falcon.firmware.paddr = phys;
|
||||
|
||||
err = falcon_load_firmware(&vic->falcon);
|
||||
if (err < 0)
|
||||
goto cleanup;
|
||||
|
||||
/*
|
||||
* In this case we have received an IOVA from the shared domain, so we
|
||||
* need to make sure to get the physical address so that the DMA API
|
||||
* knows what memory pages to flush the cache for.
|
||||
*/
|
||||
if (client->group) {
|
||||
phys = dma_map_single(vic->dev, virt, size, DMA_TO_DEVICE);
|
||||
|
||||
err = dma_mapping_error(vic->dev, phys);
|
||||
if (err < 0)
|
||||
goto cleanup;
|
||||
|
||||
/*
|
||||
* If the DMA API mapped this through a bounce buffer, the
|
||||
* dma_sync_single_for_device() call below will not be able
|
||||
* to flush the caches for the right memory pages. Output a
|
||||
* big warning in that case so that the DMA mask can be set
|
||||
* properly and the bounce buffer avoided.
|
||||
*/
|
||||
WARN(phys != vic->falcon.firmware.paddr,
|
||||
"check DMA mask setting for %s\n", dev_name(vic->dev));
|
||||
}
|
||||
|
||||
dma_sync_single_for_device(vic->dev, phys, size, DMA_TO_DEVICE);
|
||||
|
||||
if (client->group)
|
||||
dma_unmap_single(vic->dev, phys, size, DMA_TO_DEVICE);
|
||||
|
||||
return 0;
|
||||
|
||||
cleanup:
|
||||
vic->falcon.data = NULL;
|
||||
if (!client->group)
|
||||
dma_free_coherent(vic->dev, size, virt, phys);
|
||||
else
|
||||
tegra_drm_free(tegra, size, virt, phys);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
|
@ -415,7 +453,6 @@ static int vic_probe(struct platform_device *pdev)
|
|||
|
||||
vic->falcon.dev = dev;
|
||||
vic->falcon.regs = vic->regs;
|
||||
vic->falcon.ops = &vic_falcon_ops;
|
||||
|
||||
err = falcon_init(&vic->falcon);
|
||||
if (err < 0)
|
||||
|
|
Loading…
Reference in New Issue