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path: root/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
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Diffstat (limited to 'drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c')
-rw-r--r--drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c122
1 files changed, 53 insertions, 69 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c b/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
index cbe447ac5974..1e956e266aa3 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
@@ -14,7 +14,6 @@
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <linux/iommu.h>
#include <linux/platform_device.h>
#include <linux/sizes.h>
#include <linux/slab.h>
@@ -40,10 +39,7 @@
#define MMUv2_MAX_STLB_ENTRIES 1024
struct etnaviv_iommuv2_domain {
- struct iommu_domain domain;
- struct device *dev;
- void *bad_page_cpu;
- dma_addr_t bad_page_dma;
+ struct etnaviv_iommu_domain base;
/* M(aster) TLB aka first level pagetable */
u32 *mtlb_cpu;
dma_addr_t mtlb_dma;
@@ -52,13 +48,15 @@ struct etnaviv_iommuv2_domain {
dma_addr_t stlb_dma[1024];
};
-static struct etnaviv_iommuv2_domain *to_etnaviv_domain(struct iommu_domain *domain)
+static struct etnaviv_iommuv2_domain *
+to_etnaviv_domain(struct etnaviv_iommu_domain *domain)
{
- return container_of(domain, struct etnaviv_iommuv2_domain, domain);
+ return container_of(domain, struct etnaviv_iommuv2_domain, base);
}
-static int etnaviv_iommuv2_map(struct iommu_domain *domain, unsigned long iova,
- phys_addr_t paddr, size_t size, int prot)
+static int etnaviv_iommuv2_map(struct etnaviv_iommu_domain *domain,
+ unsigned long iova, phys_addr_t paddr,
+ size_t size, int prot)
{
struct etnaviv_iommuv2_domain *etnaviv_domain =
to_etnaviv_domain(domain);
@@ -68,7 +66,7 @@ static int etnaviv_iommuv2_map(struct iommu_domain *domain, unsigned long iova,
if (size != SZ_4K)
return -EINVAL;
- if (prot & IOMMU_WRITE)
+ if (prot & ETNAVIV_PROT_WRITE)
entry |= MMUv2_PTE_WRITEABLE;
mtlb_entry = (iova & MMUv2_MTLB_MASK) >> MMUv2_MTLB_SHIFT;
@@ -79,8 +77,8 @@ static int etnaviv_iommuv2_map(struct iommu_domain *domain, unsigned long iova,
return 0;
}
-static size_t etnaviv_iommuv2_unmap(struct iommu_domain *domain,
- unsigned long iova, size_t size)
+static size_t etnaviv_iommuv2_unmap(struct etnaviv_iommu_domain *domain,
+ unsigned long iova, size_t size)
{
struct etnaviv_iommuv2_domain *etnaviv_domain =
to_etnaviv_domain(domain);
@@ -97,38 +95,26 @@ static size_t etnaviv_iommuv2_unmap(struct iommu_domain *domain,
return SZ_4K;
}
-static phys_addr_t etnaviv_iommuv2_iova_to_phys(struct iommu_domain *domain,
- dma_addr_t iova)
-{
- struct etnaviv_iommuv2_domain *etnaviv_domain =
- to_etnaviv_domain(domain);
- int mtlb_entry, stlb_entry;
-
- mtlb_entry = (iova & MMUv2_MTLB_MASK) >> MMUv2_MTLB_SHIFT;
- stlb_entry = (iova & MMUv2_STLB_MASK) >> MMUv2_STLB_SHIFT;
-
- return etnaviv_domain->stlb_cpu[mtlb_entry][stlb_entry] & ~(SZ_4K - 1);
-}
-
static int etnaviv_iommuv2_init(struct etnaviv_iommuv2_domain *etnaviv_domain)
{
u32 *p;
int ret, i, j;
/* allocate scratch page */
- etnaviv_domain->bad_page_cpu = dma_alloc_coherent(etnaviv_domain->dev,
- SZ_4K,
- &etnaviv_domain->bad_page_dma,
- GFP_KERNEL);
- if (!etnaviv_domain->bad_page_cpu) {
+ etnaviv_domain->base.bad_page_cpu = dma_alloc_coherent(
+ etnaviv_domain->base.dev,
+ SZ_4K,
+ &etnaviv_domain->base.bad_page_dma,
+ GFP_KERNEL);
+ if (!etnaviv_domain->base.bad_page_cpu) {
ret = -ENOMEM;
goto fail_mem;
}
- p = etnaviv_domain->bad_page_cpu;
+ p = etnaviv_domain->base.bad_page_cpu;
for (i = 0; i < SZ_4K / 4; i++)
*p++ = 0xdead55aa;
- etnaviv_domain->mtlb_cpu = dma_alloc_coherent(etnaviv_domain->dev,
+ etnaviv_domain->mtlb_cpu = dma_alloc_coherent(etnaviv_domain->base.dev,
SZ_4K,
&etnaviv_domain->mtlb_dma,
GFP_KERNEL);
@@ -140,7 +126,7 @@ static int etnaviv_iommuv2_init(struct etnaviv_iommuv2_domain *etnaviv_domain)
/* pre-populate STLB pages (may want to switch to on-demand later) */
for (i = 0; i < MMUv2_MAX_STLB_ENTRIES; i++) {
etnaviv_domain->stlb_cpu[i] =
- dma_alloc_coherent(etnaviv_domain->dev,
+ dma_alloc_coherent(etnaviv_domain->base.dev,
SZ_4K,
&etnaviv_domain->stlb_dma[i],
GFP_KERNEL);
@@ -159,19 +145,19 @@ static int etnaviv_iommuv2_init(struct etnaviv_iommuv2_domain *etnaviv_domain)
return 0;
fail_mem:
- if (etnaviv_domain->bad_page_cpu)
- dma_free_coherent(etnaviv_domain->dev, SZ_4K,
- etnaviv_domain->bad_page_cpu,
- etnaviv_domain->bad_page_dma);
+ if (etnaviv_domain->base.bad_page_cpu)
+ dma_free_coherent(etnaviv_domain->base.dev, SZ_4K,
+ etnaviv_domain->base.bad_page_cpu,
+ etnaviv_domain->base.bad_page_dma);
if (etnaviv_domain->mtlb_cpu)
- dma_free_coherent(etnaviv_domain->dev, SZ_4K,
+ dma_free_coherent(etnaviv_domain->base.dev, SZ_4K,
etnaviv_domain->mtlb_cpu,
etnaviv_domain->mtlb_dma);
for (i = 0; i < MMUv2_MAX_STLB_ENTRIES; i++) {
if (etnaviv_domain->stlb_cpu[i])
- dma_free_coherent(etnaviv_domain->dev, SZ_4K,
+ dma_free_coherent(etnaviv_domain->base.dev, SZ_4K,
etnaviv_domain->stlb_cpu[i],
etnaviv_domain->stlb_dma[i]);
}
@@ -179,23 +165,23 @@ fail_mem:
return ret;
}
-static void etnaviv_iommuv2_domain_free(struct iommu_domain *domain)
+static void etnaviv_iommuv2_domain_free(struct etnaviv_iommu_domain *domain)
{
struct etnaviv_iommuv2_domain *etnaviv_domain =
to_etnaviv_domain(domain);
int i;
- dma_free_coherent(etnaviv_domain->dev, SZ_4K,
- etnaviv_domain->bad_page_cpu,
- etnaviv_domain->bad_page_dma);
+ dma_free_coherent(etnaviv_domain->base.dev, SZ_4K,
+ etnaviv_domain->base.bad_page_cpu,
+ etnaviv_domain->base.bad_page_dma);
- dma_free_coherent(etnaviv_domain->dev, SZ_4K,
+ dma_free_coherent(etnaviv_domain->base.dev, SZ_4K,
etnaviv_domain->mtlb_cpu,
etnaviv_domain->mtlb_dma);
for (i = 0; i < MMUv2_MAX_STLB_ENTRIES; i++) {
if (etnaviv_domain->stlb_cpu[i])
- dma_free_coherent(etnaviv_domain->dev, SZ_4K,
+ dma_free_coherent(etnaviv_domain->base.dev, SZ_4K,
etnaviv_domain->stlb_cpu[i],
etnaviv_domain->stlb_dma[i]);
}
@@ -203,7 +189,7 @@ static void etnaviv_iommuv2_domain_free(struct iommu_domain *domain)
vfree(etnaviv_domain);
}
-static size_t etnaviv_iommuv2_dump_size(struct iommu_domain *domain)
+static size_t etnaviv_iommuv2_dump_size(struct etnaviv_iommu_domain *domain)
{
struct etnaviv_iommuv2_domain *etnaviv_domain =
to_etnaviv_domain(domain);
@@ -217,7 +203,7 @@ static size_t etnaviv_iommuv2_dump_size(struct iommu_domain *domain)
return dump_size;
}
-static void etnaviv_iommuv2_dump(struct iommu_domain *domain, void *buf)
+static void etnaviv_iommuv2_dump(struct etnaviv_iommu_domain *domain, void *buf)
{
struct etnaviv_iommuv2_domain *etnaviv_domain =
to_etnaviv_domain(domain);
@@ -230,18 +216,6 @@ static void etnaviv_iommuv2_dump(struct iommu_domain *domain, void *buf)
memcpy(buf, etnaviv_domain->stlb_cpu[i], SZ_4K);
}
-static const struct etnaviv_iommu_ops etnaviv_iommu_ops = {
- .ops = {
- .domain_free = etnaviv_iommuv2_domain_free,
- .map = etnaviv_iommuv2_map,
- .unmap = etnaviv_iommuv2_unmap,
- .iova_to_phys = etnaviv_iommuv2_iova_to_phys,
- .pgsize_bitmap = SZ_4K,
- },
- .dump_size = etnaviv_iommuv2_dump_size,
- .dump = etnaviv_iommuv2_dump,
-};
-
void etnaviv_iommuv2_restore(struct etnaviv_gpu *gpu)
{
struct etnaviv_iommuv2_domain *etnaviv_domain =
@@ -254,35 +228,45 @@ void etnaviv_iommuv2_restore(struct etnaviv_gpu *gpu)
prefetch = etnaviv_buffer_config_mmuv2(gpu,
(u32)etnaviv_domain->mtlb_dma,
- (u32)etnaviv_domain->bad_page_dma);
- etnaviv_gpu_start_fe(gpu, (u32)etnaviv_cmdbuf_get_pa(gpu->buffer),
+ (u32)etnaviv_domain->base.bad_page_dma);
+ etnaviv_gpu_start_fe(gpu, (u32)etnaviv_cmdbuf_get_pa(&gpu->buffer),
prefetch);
etnaviv_gpu_wait_idle(gpu, 100);
gpu_write(gpu, VIVS_MMUv2_CONTROL, VIVS_MMUv2_CONTROL_ENABLE);
}
-struct iommu_domain *etnaviv_iommuv2_domain_alloc(struct etnaviv_gpu *gpu)
+
+const struct etnaviv_iommu_domain_ops etnaviv_iommuv2_ops = {
+ .free = etnaviv_iommuv2_domain_free,
+ .map = etnaviv_iommuv2_map,
+ .unmap = etnaviv_iommuv2_unmap,
+ .dump_size = etnaviv_iommuv2_dump_size,
+ .dump = etnaviv_iommuv2_dump,
+};
+
+struct etnaviv_iommu_domain *
+etnaviv_iommuv2_domain_alloc(struct etnaviv_gpu *gpu)
{
struct etnaviv_iommuv2_domain *etnaviv_domain;
+ struct etnaviv_iommu_domain *domain;
int ret;
etnaviv_domain = vzalloc(sizeof(*etnaviv_domain));
if (!etnaviv_domain)
return NULL;
- etnaviv_domain->dev = gpu->dev;
+ domain = &etnaviv_domain->base;
- etnaviv_domain->domain.type = __IOMMU_DOMAIN_PAGING;
- etnaviv_domain->domain.ops = &etnaviv_iommu_ops.ops;
- etnaviv_domain->domain.pgsize_bitmap = SZ_4K;
- etnaviv_domain->domain.geometry.aperture_start = 0;
- etnaviv_domain->domain.geometry.aperture_end = ~0UL & ~(SZ_4K - 1);
+ domain->dev = gpu->dev;
+ domain->base = 0;
+ domain->size = (u64)SZ_1G * 4;
+ domain->ops = &etnaviv_iommuv2_ops;
ret = etnaviv_iommuv2_init(etnaviv_domain);
if (ret)
goto out_free;
- return &etnaviv_domain->domain;
+ return &etnaviv_domain->base;
out_free:
vfree(etnaviv_domain);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.