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https://github.com/ps5-linux/ps5-linux-loader.git
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46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/*** Source: ps5-hen by cragson ***/
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#ifndef IOMMU_H
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#define IOMMU_H
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#include <stdint.h>
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// Command buffer MMIO offsets
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#define IOMMU_MMIO_CB_HEAD 0xa000
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#define IOMMU_MMIO_CB_TAIL 0xa008
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// Queue constants
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#define IOMMU_CB_SIZE 0x2000
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#define IOMMU_CB_MASK (IOMMU_CB_SIZE - 1)
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#define IOMMU_CMD_ENTRY_SIZE 0x10
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// IOMMU softc field offsets
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#define IOMMU_SC_MMIO_VA 0x40
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#define IOMMU_SC_CB2_PTR 0x78
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#define IOMMU_SC_CB3_PTR 0x80
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#define IOMMU_SC_EB_PTR 0x60b90
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typedef struct _iommu_ctx {
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uint64_t cb2_base; // kernel VA of command buffer 2 (hv terminology)
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uint64_t cb3_base; // kernel VA of command buffer 3 (hv terminology)
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uint64_t eb_base; // kernel VA of event buffer
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uint64_t mmio_va; // DMAP VA of IOMMU MMIO base
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} iommu_ctx;
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extern iommu_ctx iommu_store;
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extern iommu_ctx *iommu;
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int iommu_init(void);
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// Submit a single 16-byte command and wait for completion
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void iommu_submit_cmd(const void *cmd);
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// Write 8 bytes to a physical address using IOMMU completion wait store
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void iommu_write8_pa(uint64_t pa, uint64_t val);
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// Write 4 bytes to a physical address
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void iommu_write4_pa(uint64_t pa, uint32_t val);
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// Write arbitrary length to a physical address in 8-byte chunks
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void iommu_write_pa(uint64_t pa, const void *data, uint32_t len);
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#endif |