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nvadsp: Enable IOVA paths in driver

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Enable driver paths that allocate IOVA memory for
ADSP OS and shared memory, where memory is required
at a fixed address.

Bug 4164138
Bug 3682950

Change-Id: I16563e14aefbcd55cc6455f88c1689664846c689
Signed-off-by: Viswanath L <viswanathl@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2988130
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Viswanath L
2023-09-29 09:08:13 +00:00
committed by mobile promotions
parent 6038bd9e6c
commit 383e589822
1 changed files with 20 additions and 13 deletions
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33
drivers/platform/tegra/nvadsp/os.c
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@@ -8,12 +8,10 @@
#include <linux/errno.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#ifdef CONFIG_IOMMU_DMA
#include <linux/iommu.h>
#include <linux/delay.h>
#include <linux/dma-buf.h>
#if defined(CONFIG_TEGRA_NVADSP_ON_SMMU)
#include <linux/dma-iommu.h>
#endif
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/firmware.h>
#include <linux/tegra_nvadsp.h>
@@ -116,6 +114,13 @@ struct nvadsp_mappings {
int len;
};
#ifdef CONFIG_IOMMU_DMA
extern dma_addr_t iommu_dma_alloc_iova(struct iommu_domain *domain,
size_t size, u64 dma_limit, struct device *dev);
extern void iommu_dma_free_iova(struct iommu_dma_cookie *cookie,
dma_addr_t iova, size_t size, struct iommu_iotlb_gather *gather);
#endif
extern u8 tegra_get_major_rev(void);
extern u8 tegra_get_minor_rev(void);
@@ -697,7 +702,7 @@ end:
return ret;
}
#if defined(CONFIG_TEGRA_NVADSP_ON_SMMU)
#ifdef CONFIG_IOMMU_DMA
/**
* Allocate a dma buffer and map it to a specified iova
* Return valid cpu virtual address on success or NULL on failure
@@ -734,7 +739,8 @@ static void *nvadsp_dma_alloc_and_map_at(struct platform_device *pdev,
* It might allocate an excessive iova region but it would be handled
* by IOMMU core during iommu_dma_free_iova().
*/
tmp_iova = iommu_dma_alloc_iova(dev, end - aligned_iova, end - pg_size);
tmp_iova = iommu_dma_alloc_iova(domain,
(end - aligned_iova), (end - pg_size), dev);
if (tmp_iova != aligned_iova) {
dev_err(dev, "failed to reserve iova range [%llx, %llx]\n",
aligned_iova, end);
@@ -780,7 +786,7 @@ static void *nvadsp_dma_alloc_and_map_at(struct platform_device *pdev,
/* Unmap and free the tmp_iova since target iova is linked */
iommu_unmap(domain, tmp_iova, size);
iommu_dma_free_iova(dev, tmp_iova, size);
iommu_dma_free_iova(domain->iova_cookie, tmp_iova, size, NULL);
return cpu_va;
@@ -788,7 +794,8 @@ fail_map:
iommu_unmap(domain, iova, offset);
dma_free_coherent(dev, size, cpu_va, tmp_iova);
fail_dma_alloc:
iommu_dma_free_iova(dev, end - aligned_iova, end - pg_size);
iommu_dma_free_iova(domain->iova_cookie,
(end - aligned_iova), (end - pg_size), NULL);
return NULL;
}
@@ -800,7 +807,7 @@ static int allocate_memory_for_adsp_os(void)
struct nvadsp_drv_data *drv_data = platform_get_drvdata(pdev);
struct device *dev = &pdev->dev;
struct resource *co_mem = &drv_data->co_mem;
#if defined(CONFIG_TEGRA_NVADSP_ON_SMMU)
#ifdef CONFIG_IOMMU_DMA
dma_addr_t addr;
#else
phys_addr_t addr;
@@ -827,7 +834,7 @@ static int allocate_memory_for_adsp_os(void)
goto map_and_end;
}
#if defined(CONFIG_TEGRA_NVADSP_ON_SMMU)
#ifdef CONFIG_IOMMU_DMA
dram_va = nvadsp_dma_alloc_and_map_at(pdev, size, addr, GFP_KERNEL);
if (!dram_va) {
dev_err(dev, "unable to allocate SMMU pages\n");
@@ -867,7 +874,7 @@ static void deallocate_memory_for_adsp_os(void)
return;
}
#if defined(CONFIG_TEGRA_NVADSP_ON_SMMU)
#ifdef CONFIG_IOMMU_DMA
dma_free_coherent(dev, priv.adsp_os_size, va, priv.adsp_os_addr);
#endif
}
@@ -928,7 +935,7 @@ static int __nvadsp_os_secload(struct platform_device *pdev)
return -ENOMEM;
}
} else {
#if defined(CONFIG_TEGRA_NVADSP_ON_SMMU)
#ifdef CONFIG_IOMMU_DMA
dram_va = nvadsp_dma_alloc_and_map_at(pdev, size, addr,
GFP_KERNEL);
if (dram_va == NULL) {
@@ -1098,7 +1105,7 @@ static int nvadsp_load_multi_fw(struct platform_device *pdev)
os_mem = drv_data->adsp_mem[ADSP_OS_ADDR] +
((i + 1) * os_size);
#if defined(CONFIG_TEGRA_NVADSP_ON_SMMU)
#ifdef CONFIG_IOMMU_DMA
dram_va = nvadsp_dma_alloc_and_map_at(pdev,
(size_t)os_size, (dma_addr_t)os_mem,
GFP_KERNEL);