gceSTATUS
gckIOMMU_Map(
IN gckIOMMU Iommu,
IN gctUINT32 DomainAddress,
IN gctUINT32 Physical,
IN gctUINT32 Bytes
)
{
gceSTATUS status;
int ret;
gcmkHEADER_ARG("DomainAddress=%#X, Physical=%#X, Bytes=%d",
DomainAddress, Physical, Bytes);
ret = iommu_map(Iommu->domain, DomainAddress, Physical, Bytes, 0);
if (ret)
{
gcmkONERROR(gcvSTATUS_NOT_SUPPORTED);
}
gcmkFOOTER_NO();
return gcvSTATUS_OK;
OnError:
gcmkFOOTER();
return status;
}
static int esa_prepare_buffer(struct device *dev)
{
unsigned long iova;
int n, ret;
/* Original firmware */
si.fwmem = devm_kzalloc(dev, FWMEM_SIZE, GFP_KERNEL);
if (!si.fwmem) {
esa_err("Failed to alloc fwmem\n");
goto err;
}
si.fwmem_pa = virt_to_phys(si.fwmem);
/* Firmware backup for SRAM */
si.fwmem_sram_bak = devm_kzalloc(dev, SRAM_FW_MAX, GFP_KERNEL);
if (!si.fwmem_sram_bak) {
esa_err("Failed to alloc fwmem\n");
goto err;
}
/* Firmware for DRAM */
for (n = 0; n < FWAREA_NUM; n++) {
si.fwarea[n] = dma_alloc_coherent(dev, FWAREA_SIZE,
&si.fwarea_pa[n], GFP_KERNEL);
if (!si.fwarea[n]) {
esa_err("Failed to alloc fwarea\n");
goto err0;
}
}
for (n = 0, iova = FWAREA_IOVA;
n < FWAREA_NUM; n++, iova += FWAREA_SIZE) {
ret = iommu_map(si.domain, iova,
si.fwarea_pa[n], FWAREA_SIZE, 0);
if (ret) {
esa_err("Failed to map iommu\n");
goto err1;
}
}
/* Base address for IBUF, OBUF and FW LOG */
si.bufmem = si.fwarea[0] + BASEMEM_OFFSET;
si.bufmem_pa = si.fwarea_pa[0];
si.fw_log_buf = si.sram + FW_LOG_ADDR;
return 0;
err1:
for (n = 0, iova = FWAREA_IOVA;
n < FWAREA_NUM; n++, iova += FWAREA_SIZE) {
iommu_unmap(si.domain, iova, FWAREA_SIZE);
}
err0:
for (n = 0; n < FWAREA_NUM; n++) {
if (si.fwarea[n])
dma_free_coherent(dev, FWAREA_SIZE,
si.fwarea[n], si.fwarea_pa[n]);
}
err:
return -ENOMEM;
}
/*
* Init push buffer resources
*/
static int host1x_pushbuffer_init(struct push_buffer *pb)
{
struct host1x_cdma *cdma = pb_to_cdma(pb);
struct host1x *host1x = cdma_to_host1x(cdma);
struct iova *alloc;
u32 size;
int err;
pb->mapped = NULL;
pb->phys = 0;
pb->size = HOST1X_PUSHBUFFER_SLOTS * 8;
size = pb->size + 4;
/* initialize buffer pointers */
pb->fence = pb->size - 8;
pb->pos = 0;
if (host1x->domain) {
unsigned long shift;
size = iova_align(&host1x->iova, size);
pb->mapped = dma_alloc_wc(host1x->dev, size, &pb->phys,
GFP_KERNEL);
if (!pb->mapped)
return -ENOMEM;
shift = iova_shift(&host1x->iova);
alloc = alloc_iova(&host1x->iova, size >> shift,
host1x->iova_end >> shift, true);
if (!alloc) {
err = -ENOMEM;
goto iommu_free_mem;
}
pb->dma = iova_dma_addr(&host1x->iova, alloc);
err = iommu_map(host1x->domain, pb->dma, pb->phys, size,
IOMMU_READ);
if (err)
goto iommu_free_iova;
} else {
static int
kgsl_iommu_map(void *mmu_specific_pt,
struct kgsl_memdesc *memdesc,
unsigned int protflags)
{
int ret = 0;
unsigned int physaddr;
unsigned int iommu_virt_addr;
unsigned int offset = 0;
int map_order;
struct iommu_domain *domain = (struct iommu_domain *)
mmu_specific_pt;
BUG_ON(NULL == domain);
map_order = get_order(SZ_4K);
for (iommu_virt_addr = memdesc->gpuaddr;
iommu_virt_addr < (memdesc->gpuaddr + memdesc->size);
iommu_virt_addr += SZ_4K, offset += PAGE_SIZE) {
physaddr = memdesc->ops->physaddr(memdesc, offset);
if (!physaddr) {
KGSL_CORE_ERR("Failed to convert %x address to "
"physical\n", (unsigned int)memdesc->hostptr + offset);
kgsl_iommu_unmap(mmu_specific_pt, memdesc);
return -EFAULT;
}
ret = iommu_map(domain, iommu_virt_addr, physaddr,
map_order, MSM_IOMMU_ATTR_NONCACHED);
if (ret) {
KGSL_CORE_ERR("iommu_map(%p, %x, %x, %d, %d) "
"failed with err: %d\n", domain,
iommu_virt_addr, physaddr, map_order,
MSM_IOMMU_ATTR_NONCACHED, ret);
kgsl_iommu_unmap(mmu_specific_pt, memdesc);
return ret;
}
}
return ret;
}
int iovmm_map_oto(struct device *dev, phys_addr_t phys, size_t size)
{
struct exynos_vm_region *region;
struct exynos_iovmm *vmm = exynos_get_iovmm(dev);
int ret;
if (WARN_ON((phys + size) >= IOVA_START)) {
dev_err(dev,
"Unable to create one to one mapping for %#x @ %#x\n",
size, phys);
return -EINVAL;
}
region = kmalloc(sizeof(*region), GFP_KERNEL);
if (!region)
return -ENOMEM;
if (WARN_ON(phys & ~PAGE_MASK))
phys = round_down(phys, PAGE_SIZE);
ret = iommu_map(vmm->domain, (dma_addr_t)phys, phys, size, 0);
if (ret < 0) {
kfree(region);
return ret;
}
region->start = (dma_addr_t)phys;
region->size = size;
INIT_LIST_HEAD(®ion->node);
spin_lock(&vmm->lock);
list_add(®ion->node, &vmm->regions_list);
spin_unlock(&vmm->lock);
return 0;
}
int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot)
{
gfn_t gfn, end_gfn;
kvm_pfn_t pfn;
int r = 0;
struct iommu_domain *domain = kvm->arch.iommu_domain;
int flags;
/* check if iommu exists and in use */
if (!domain)
return 0;
gfn = slot->base_gfn;
end_gfn = gfn + slot->npages;
flags = IOMMU_READ;
if (!(slot->flags & KVM_MEM_READONLY))
flags |= IOMMU_WRITE;
if (!kvm->arch.iommu_noncoherent)
flags |= IOMMU_CACHE;
while (gfn < end_gfn) {
unsigned long page_size;
/* Check if already mapped */
if (iommu_iova_to_phys(domain, gfn_to_gpa(gfn))) {
gfn += 1;
continue;
}
/* Get the page size we could use to map */
page_size = kvm_host_page_size(kvm, gfn);
/* Make sure the page_size does not exceed the memslot */
while ((gfn + (page_size >> PAGE_SHIFT)) > end_gfn)
page_size >>= 1;
/* Make sure gfn is aligned to the page size we want to map */
while ((gfn << PAGE_SHIFT) & (page_size - 1))
page_size >>= 1;
/* Make sure hva is aligned to the page size we want to map */
while (__gfn_to_hva_memslot(slot, gfn) & (page_size - 1))
page_size >>= 1;
/*
* Pin all pages we are about to map in memory. This is
* important because we unmap and unpin in 4kb steps later.
*/
pfn = kvm_pin_pages(slot, gfn, page_size >> PAGE_SHIFT);
if (is_error_noslot_pfn(pfn)) {
gfn += 1;
continue;
}
/* Map into IO address space */
r = iommu_map(domain, gfn_to_gpa(gfn), pfn_to_hpa(pfn),
page_size, flags);
if (r) {
printk(KERN_ERR "kvm_iommu_map_address:"
"iommu failed to map pfn=%llx\n", pfn);
kvm_unpin_pages(kvm, pfn, page_size >> PAGE_SHIFT);
goto unmap_pages;
}
gfn += page_size >> PAGE_SHIFT;
cond_resched();
}
return 0;
unmap_pages:
kvm_iommu_put_pages(kvm, slot->base_gfn, gfn - slot->base_gfn);
return r;
}
int
efhw_iopages_alloc(struct pci_dev *pci_dev, struct efhw_iopages *p,
unsigned order, efhw_iommu_domain *vf_domain,
unsigned long iova_base)
{
/* dma_alloc_coherent() is really the right interface to use here.
* However, it allocates memory "close" to the device, but we want
* memory on the current numa node. Also we need the memory to be
* contiguous in the kernel, but not necessarily in physical
* memory.
*
* vf_domain is the IOMMU protection domain - it imples that pci_dev
* is a VF that should not use the normal DMA mapping APIs
*/
struct device *dev = &pci_dev->dev;
int i = 0;
p->n_pages = 1 << order;
p->dma_addrs = kmalloc(p->n_pages * sizeof(p->dma_addrs[0]), 0);
if (p->dma_addrs == NULL)
goto fail1;
p->ptr = vmalloc_node(p->n_pages << PAGE_SHIFT, -1);
if (p->ptr == NULL)
goto fail2;
for (i = 0; i < p->n_pages; ++i) {
struct page *page;
page = vmalloc_to_page(p->ptr + (i << PAGE_SHIFT));
if (!vf_domain) {
p->dma_addrs[i] = dma_map_page(dev, page, 0, PAGE_SIZE,
DMA_BIDIRECTIONAL);
if (dma_mapping_error(dev, p->dma_addrs[i])) {
EFHW_ERR("%s: ERROR dma_map_page failed",
__FUNCTION__);
goto fail3;
}
} else
#ifdef CONFIG_SFC_RESOURCE_VF_IOMMU
{
int rc;
p->dma_addrs[i] = iova_base;
rc = iommu_map(vf_domain, p->dma_addrs[i],
page_to_phys(page), PAGE_SIZE,
IOMMU_READ | IOMMU_WRITE | IOMMU_CACHE);
if (rc) {
EFHW_ERR("%s: ERROR iommu_map failed (%d)",
__FUNCTION__, rc);
goto fail3;
}
iova_base += PAGE_SIZE;
}
#else
EFRM_ASSERT(0);
#endif
}
return 0;
fail3:
while (i-- > 0)
if (!vf_domain) {
dma_unmap_page(dev, p->dma_addrs[i],
PAGE_SIZE, DMA_BIDIRECTIONAL);
} else {
#ifdef CONFIG_SFC_RESOURCE_VF_IOMMU
mutex_lock(&efrm_iommu_mutex);
iommu_unmap(vf_domain, iova_base, PAGE_SIZE);
mutex_unlock(&efrm_iommu_mutex);
#endif
}
fail2:
kfree(p->dma_addrs);
fail1:
return -ENOMEM;
}
static int iommu_map_all(unsigned long domain_num, struct ion_cp_heap *cp_heap,
int partition, unsigned long prot)
{
unsigned long left_to_map = cp_heap->total_size;
unsigned long order = get_order(SZ_64K);
unsigned long page_size = SZ_64K;
int ret_value = 0;
unsigned long virt_addr_len = cp_heap->total_size;
struct iommu_domain *domain = msm_get_iommu_domain(domain_num);
/* If we are mapping into the video domain we need to map twice the
* size of the heap to account for prefetch issue in video core.
*/
if (domain_num == cp_heap->iommu_2x_map_domain)
virt_addr_len <<= 1;
if (cp_heap->total_size & (SZ_64K-1)) {
pr_err("Heap size is not aligned to 64K, cannot map into IOMMU\n");
ret_value = -EINVAL;
}
if (cp_heap->base & (SZ_64K-1)) {
pr_err("Heap physical address is not aligned to 64K, cannot map into IOMMU\n");
ret_value = -EINVAL;
}
if (!ret_value && domain) {
unsigned long temp_phys = cp_heap->base;
unsigned long temp_iova =
msm_allocate_iova_address(domain_num, partition,
virt_addr_len, SZ_64K);
if (!temp_iova) {
pr_err("%s: could not allocate iova from domain %lu, partition %d\n",
__func__, domain_num, partition);
ret_value = -ENOMEM;
goto out;
}
cp_heap->iommu_iova[domain_num] = temp_iova;
while (left_to_map) {
int ret = iommu_map(domain, temp_iova, temp_phys,
order, prot);
if (ret) {
pr_err("%s: could not map %lx in domain %p, error: %d\n",
__func__, temp_iova, domain, ret);
ret_value = -EAGAIN;
goto free_iova;
}
temp_iova += page_size;
temp_phys += page_size;
left_to_map -= page_size;
}
if (domain_num == cp_heap->iommu_2x_map_domain)
ret_value = msm_iommu_map_extra(domain, temp_iova,
cp_heap->total_size,
SZ_64K, prot);
if (ret_value)
goto free_iova;
} else {
pr_err("Unable to get IOMMU domain %lu\n", domain_num);
ret_value = -ENOMEM;
}
goto out;
free_iova:
msm_free_iova_address(cp_heap->iommu_iova[domain_num], domain_num,
partition, virt_addr_len);
out:
return ret_value;
}
static struct a6xx_gmu_bo *a6xx_gmu_memory_alloc(struct a6xx_gmu *gmu,
size_t size)
{
struct a6xx_gmu_bo *bo;
int ret, count, i;
bo = kzalloc(sizeof(*bo), GFP_KERNEL);
if (!bo)
return ERR_PTR(-ENOMEM);
bo->size = PAGE_ALIGN(size);
count = bo->size >> PAGE_SHIFT;
bo->pages = kcalloc(count, sizeof(struct page *), GFP_KERNEL);
if (!bo->pages) {
kfree(bo);
return ERR_PTR(-ENOMEM);
}
for (i = 0; i < count; i++) {
bo->pages[i] = alloc_page(GFP_KERNEL);
if (!bo->pages[i])
goto err;
}
bo->iova = gmu->uncached_iova_base;
for (i = 0; i < count; i++) {
ret = iommu_map(gmu->domain,
bo->iova + (PAGE_SIZE * i),
page_to_phys(bo->pages[i]), PAGE_SIZE,
IOMMU_READ | IOMMU_WRITE);
if (ret) {
DRM_DEV_ERROR(gmu->dev, "Unable to map GMU buffer object\n");
for (i = i - 1 ; i >= 0; i--)
iommu_unmap(gmu->domain,
bo->iova + (PAGE_SIZE * i),
PAGE_SIZE);
goto err;
}
}
bo->virt = vmap(bo->pages, count, VM_IOREMAP,
pgprot_writecombine(PAGE_KERNEL));
if (!bo->virt)
goto err;
/* Align future IOVA addresses on 1MB boundaries */
gmu->uncached_iova_base += ALIGN(size, SZ_1M);
return bo;
err:
for (i = 0; i < count; i++) {
if (bo->pages[i])
__free_pages(bo->pages[i], 0);
}
kfree(bo->pages);
kfree(bo);
return ERR_PTR(-ENOMEM);
}
dma_addr_t iovmm_map(struct device *dev, struct scatterlist *sg, off_t offset,
size_t size)
{
off_t start_off;
dma_addr_t addr, start = 0;
size_t mapped_size = 0;
struct exynos_vm_region *region;
struct exynos_iovmm *vmm = exynos_get_iovmm(dev);
int order;
int ret;
int count =0;
#ifdef CONFIG_EXYNOS_IOVMM_ALIGN64K
size_t iova_size = 0;
#endif
for (; sg_dma_len(sg) < offset; sg = sg_next(sg))
offset -= sg_dma_len(sg);
start_off = offset_in_page(sg_phys(sg) + offset);
size = PAGE_ALIGN(size + start_off);
order = __fls(min_t(size_t, size, SZ_1M));
region = kmalloc(sizeof(*region), GFP_KERNEL);
if (!region) {
ret = -ENOMEM;
goto err_map_nomem;
}
#ifdef CONFIG_EXYNOS_IOVMM_ALIGN64K
iova_size = ALIGN(size, SZ_64K);
start = (dma_addr_t)gen_pool_alloc_aligned(vmm->vmm_pool, iova_size,
order);
#else
start = (dma_addr_t)gen_pool_alloc(vmm->vmm_pool, size);
#endif
if (!start) {
ret = -ENOMEM;
goto err_map_noiomem;
}
addr = start;
do {
phys_addr_t phys;
size_t len;
phys = sg_phys(sg);
len = sg_dma_len(sg);
/* if back to back sg entries are contiguous consolidate them */
while (sg_next(sg) &&
sg_phys(sg) + sg_dma_len(sg) == sg_phys(sg_next(sg))) {
len += sg_dma_len(sg_next(sg));
sg = sg_next(sg);
}
if (offset > 0) {
len -= offset;
phys += offset;
offset = 0;
}
if (offset_in_page(phys)) {
len += offset_in_page(phys);
phys = round_down(phys, PAGE_SIZE);
}
len = PAGE_ALIGN(len);
if (len > (size - mapped_size))
len = size - mapped_size;
ret = iommu_map(vmm->domain, addr, phys, len, 0);
if (ret)
break;
addr += len;
mapped_size += len;
} while ((sg = sg_next(sg)) && (mapped_size < size));
BUG_ON(mapped_size > size);
if (mapped_size < size) {
pr_err("IOVMM: iovmm_map failed as mapped_size (%d) < size (%d)\n", mapped_size, size);
goto err_map_map;
}
#ifdef CONFIG_EXYNOS_IOVMM_ALIGN64K
if (iova_size != size) {
addr = start + size;
size = iova_size;
for (; addr < start + size; addr += PAGE_SIZE) {
ret = iommu_map(vmm->domain, addr,
page_to_phys(ZERO_PAGE(0)), PAGE_SIZE, 0);
if (ret)
goto err_map_map;
mapped_size += PAGE_SIZE;
}
}
#endif
region->start = start + start_off;
region->size = size;
INIT_LIST_HEAD(®ion->node);
spin_lock(&vmm->lock);
list_add(®ion->node, &vmm->regions_list);
spin_unlock(&vmm->lock);
dev_dbg(dev, "IOVMM: Allocated VM region @ %#x/%#X bytes.\n",
region->start, region->size);
return region->start;
err_map_map:
iommu_unmap(vmm->domain, start, mapped_size);
gen_pool_free(vmm->vmm_pool, start, size);
err_map_noiomem:
kfree(region);
err_map_nomem:
dev_dbg(dev, "IOVMM: Failed to allocated VM region for %#x bytes.\n",
size);
return (dma_addr_t)ret;
}
static int ion_cp_heap_map_iommu(struct ion_buffer *buffer,
struct ion_iommu_map *data,
unsigned int domain_num,
unsigned int partition_num,
unsigned long align,
unsigned long iova_length,
unsigned long flags)
{
//HTC_START Jason Huang 20120419
//HTC_START Jason Huang 20120530 --- Add unsigned long temp_phys and int i back.
unsigned long temp_phys, temp_iova;
struct iommu_domain *domain;
int i = 0, ret = 0;
unsigned long extra;
//HTC_END
data->mapped_size = iova_length;
if (!msm_use_iommu()) {
data->iova_addr = buffer->priv_phys;
return 0;
}
extra = iova_length - buffer->size;
//HTC_START Jason Huang 20120530 --- For buffers from ION CP MM heap, always 1M-alignment.
if (buffer->heap->id == ION_CP_MM_HEAP_ID)
{
align = SZ_1M;
}
//HTC_END
data->iova_addr = msm_allocate_iova_address(domain_num, partition_num,
data->mapped_size, align);
if (!data->iova_addr) {
ret = -ENOMEM;
goto out;
}
domain = msm_get_iommu_domain(domain_num);
if (!domain) {
ret = -ENOMEM;
goto out1;
}
//HTC_START Jason Huang 20120419 --- Change to htc_iommu_map_range for performance improvement.
/*HTC_START Jason Huang 20120530 --- For buffers from ION CP MM heap, do 1M mapping by iommu_map().
Neither htc_iommu_map_range() nor iommu_map_range() supports 1M mapping.*/
if (buffer->heap->id == ION_CP_MM_HEAP_ID)
{
temp_iova = data->iova_addr;
temp_phys = buffer->priv_phys;
for (i = buffer->size; i > 0; i -= SZ_1M, temp_iova += SZ_1M,
temp_phys += SZ_1M) {
ret = iommu_map(domain, temp_iova, temp_phys,
get_order(SZ_1M),
ION_IS_CACHED(flags) ? 1 : 0);
if (ret) {
pr_err("%s: could not map %lx to %lx in domain %p\n",
__func__, temp_iova, temp_phys, domain);
goto out2;
}
}
}
else
{
ret = htc_iommu_map_range(domain, data->iova_addr, buffer->priv_phys, buffer->size, ION_IS_CACHED(flags) ? 1 : 0);
if (ret) {
ret = -ENOMEM;
goto out1;
}
temp_iova = data->iova_addr + buffer->size;
}
/*
temp_iova = data->iova_addr;
temp_phys = buffer->priv_phys;
for (i = buffer->size; i > 0; i -= SZ_4K, temp_iova += SZ_4K,
temp_phys += SZ_4K) {
ret = iommu_map(domain, temp_iova, temp_phys,
get_order(SZ_4K),
ION_IS_CACHED(flags) ? 1 : 0);
if (ret) {
pr_err("%s: could not map %lx to %lx in domain %p\n",
__func__, temp_iova, temp_phys, domain);
goto out2;
}
}
*/
//HTC_END
if (extra && (msm_iommu_map_extra(domain, temp_iova, extra, flags) < 0))
goto out2;
return 0;
//HTC_START Jason Huang 20120419
//HTC_START Jason Huang 20120530
out2:
if (buffer->heap->id == ION_CP_MM_HEAP_ID)
{
for ( ; i < buffer->size; i += SZ_1M, temp_iova -= SZ_1M)
iommu_unmap(domain, temp_iova, get_order(SZ_1M));
}
else
{
iommu_unmap_range(domain, data->iova_addr, buffer->size);
}
/*
for ( ; i < buffer->size; i += SZ_4K, temp_iova -= SZ_4K)
iommu_unmap(domain, temp_iova, get_order(SZ_4K));
*/
//HTC_END
out1:
msm_free_iova_address(data->iova_addr, domain_num, partition_num,
data->mapped_size);
out:
return ret;
}
static int ion_cp_heap_map_iommu(struct ion_buffer *buffer,
struct ion_iommu_map *data,
unsigned int domain_num,
unsigned int partition_num,
unsigned long align,
unsigned long iova_length,
unsigned long flags)
{
unsigned long temp_phys, temp_iova;
struct iommu_domain *domain;
int i, ret = 0;
unsigned long extra;
data->mapped_size = iova_length;
if (!msm_use_iommu()) {
data->iova_addr = buffer->priv_phys;
return 0;
}
extra = iova_length - buffer->size;
data->iova_addr = msm_allocate_iova_address(domain_num, partition_num,
data->mapped_size, align);
if (!data->iova_addr) {
ret = -ENOMEM;
goto out;
}
domain = msm_get_iommu_domain(domain_num);
if (!domain) {
ret = -ENOMEM;
goto out1;
}
temp_iova = data->iova_addr;
temp_phys = buffer->priv_phys;
for (i = buffer->size; i > 0; i -= SZ_4K, temp_iova += SZ_4K,
temp_phys += SZ_4K) {
ret = iommu_map(domain, temp_iova, temp_phys,
get_order(SZ_4K),
ION_IS_CACHED(flags) ? 1 : 0);
if (ret) {
pr_err("%s: could not map %lx to %lx in domain %p\n",
__func__, temp_iova, temp_phys, domain);
goto out2;
}
}
if (extra && (msm_iommu_map_extra(domain, temp_iova, extra, flags) < 0))
goto out2;
return 0;
out2:
for ( ; i < buffer->size; i += SZ_4K, temp_iova -= SZ_4K)
iommu_unmap(domain, temp_iova, get_order(SZ_4K));
out1:
msm_free_iova_address(data->iova_addr, domain_num, partition_num,
data->mapped_size);
out:
return ret;
}