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idedrv Implement DMA reading/writing without IRQ support
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This commit is contained in:
Kamil Kowalczyk
2026-04-26 18:47:05 +02:00
parent 05ab0d4c86
commit a2ed5c2b8a
4 changed files with 326 additions and 89 deletions
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17
kernel/device/storage/idedrv.h
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@@ -20,7 +20,9 @@ struct idedrv_init {
uint16_t io, ctrl;
uint8_t devno;
uint8_t irq;
uint16_t bmbase;
bool irqs_support;
bool bm_support;
};
struct idedrv_request {
@@ -31,6 +33,12 @@ struct idedrv_request {
atomic_int done;
};
struct ide_prd_entry {
uint32_t phys_addr;
uint16_t size;
uint16_t rsvd_eot;
} PACKED;
struct idedrv {
struct device* device;
bool lba48;
@@ -41,6 +49,13 @@ struct idedrv {
uint8_t irq;
struct idedrv_request* current_req;
bool irqs_support;
uint16_t bmbase;
bool bm_support;
struct ide_prd_entry* prdt;
uintptr_t prdt_phys;
size_t prdt_entry_count;
uintptr_t bounce_buffer_phys;
void* bounce_buffer;
};
struct ide_probe {
@@ -50,7 +65,9 @@ struct ide_probe {
uint16_t io, ctrl;
uint8_t devno;
uint8_t irq;
uint16_t bmbase;
bool irqs_support;
bool bm_support;
};
DEFINE_DEVICE_INIT(idedrv_init);