diff options
| author | Sughosh Ganu <sughosh.ganu@linaro.org> | 2024-08-26 17:29:18 +0530 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2024-09-03 14:08:50 -0600 |
| commit | ed17a33fed296a87219b0ff702045ce488bc3771 (patch) | |
| tree | e1ac01002f7dcd0e1c1adbf5139234038ea58f8f /drivers/iommu/sandbox_iommu.c | |
| parent | a368850ae2551a4fcc5f9a2e9e8e90c056d4fe73 (diff) | |
lmb: make LMB memory map persistent and global
The current LMB API's for allocating and reserving memory use a
per-caller based memory view. Memory allocated by a caller can then be
overwritten by another caller. Make these allocations and reservations
persistent using the alloced list data structure.
Two alloced lists are declared -- one for the available(free) memory,
and one for the used memory. Once full, the list can then be extended
at runtime.
[sjg: Use a stack to store pointer of lmb struct when running lmb tests]
Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
[sjg: Optimise the logic to add a region in lmb_add_region_flags()]
Diffstat (limited to 'drivers/iommu/sandbox_iommu.c')
| -rw-r--r-- | drivers/iommu/sandbox_iommu.c | 16 |
1 files changed, 3 insertions, 13 deletions
diff --git a/drivers/iommu/sandbox_iommu.c b/drivers/iommu/sandbox_iommu.c index e37976f86f0..5b4a6a89824 100644 --- a/drivers/iommu/sandbox_iommu.c +++ b/drivers/iommu/sandbox_iommu.c @@ -11,14 +11,9 @@ #define IOMMU_PAGE_SIZE SZ_4K -struct sandbox_iommu_priv { - struct lmb lmb; -}; - static dma_addr_t sandbox_iommu_map(struct udevice *dev, void *addr, size_t size) { - struct sandbox_iommu_priv *priv = dev_get_priv(dev); phys_addr_t paddr, dva; phys_size_t psize, off; @@ -26,7 +21,7 @@ static dma_addr_t sandbox_iommu_map(struct udevice *dev, void *addr, off = virt_to_phys(addr) - paddr; psize = ALIGN(size + off, IOMMU_PAGE_SIZE); - dva = lmb_alloc(&priv->lmb, psize, IOMMU_PAGE_SIZE); + dva = lmb_alloc(psize, IOMMU_PAGE_SIZE); return dva + off; } @@ -34,7 +29,6 @@ static dma_addr_t sandbox_iommu_map(struct udevice *dev, void *addr, static void sandbox_iommu_unmap(struct udevice *dev, dma_addr_t addr, size_t size) { - struct sandbox_iommu_priv *priv = dev_get_priv(dev); phys_addr_t dva; phys_size_t psize; @@ -42,7 +36,7 @@ static void sandbox_iommu_unmap(struct udevice *dev, dma_addr_t addr, psize = size + (addr - dva); psize = ALIGN(psize, IOMMU_PAGE_SIZE); - lmb_free(&priv->lmb, dva, psize); + lmb_free(dva, psize); } static struct iommu_ops sandbox_iommu_ops = { @@ -52,10 +46,7 @@ static struct iommu_ops sandbox_iommu_ops = { static int sandbox_iommu_probe(struct udevice *dev) { - struct sandbox_iommu_priv *priv = dev_get_priv(dev); - - lmb_init(&priv->lmb); - lmb_add(&priv->lmb, 0x89abc000, SZ_16K); + lmb_add(0x89abc000, SZ_16K); return 0; } @@ -69,7 +60,6 @@ U_BOOT_DRIVER(sandbox_iommu) = { .name = "sandbox_iommu", .id = UCLASS_IOMMU, .of_match = sandbox_iommu_ids, - .priv_auto = sizeof(struct sandbox_iommu_priv), .ops = &sandbox_iommu_ops, .probe = sandbox_iommu_probe, }; |