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fat_io_lib port WIP
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This commit is contained in:
Kamil Kowalczyk
2026-02-26 23:33:03 +01:00
parent 9758d79303
commit baa13fb695
15 changed files with 3607 additions and 18 deletions
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6
kernel/device/device.h
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@@ -9,6 +9,12 @@
#include <sync/spin_lock.h>
#include <sys/smp.h>
#define device_op1(d, op, proc, rctx, a1, a2, a3, a4, ...) \
(d)->ops[(op)]((d), (proc), (rctx), (void*)(a1), (void*)(a2), (void*)(a3), (void*)(a4))
#define device_op(d, op, proc, rctx, ...) \
device_op1 (d, op, proc, rctx, __VA_ARGS__, NULL, NULL, NULL, NULL)
struct device;
typedef int (*device_op_func_t) (struct device* device, struct proc*, struct reschedule_ctx* rctx,

12
kernel/device/ramdrv.c
View File

@@ -91,16 +91,18 @@ int ramdrv_get_sector_size (struct device* device, struct proc* proc, struct res
int ramdrv_read (struct device* device, struct proc* proc, struct reschedule_ctx* rctx, void* a1,
void* a2, void* a3, void* a4) {
if (a1 == NULL || a2 == NULL || a3 == NULL || a4 == NULL)
(void)proc, (void)rctx, (void)a4;
if (a1 == NULL || a2 == NULL || a3 == NULL)
return -ST_BAD_ADDRESS_SPACE;
size_t sector = *(size_t*)a1;
size_t off = *(size_t*)a2;
size_t size = *(size_t*)a3;
uint8_t* buffer = a4;
size_t sector_count = *(size_t*)a2;
uint8_t* buffer = a3;
struct ramdrv* ramdrv = device->udata;
size_t pos = sector * ramdrv->sector_size + off;
size_t pos = sector * ramdrv->sector_size;
size_t size = sector_count * ramdrv->sector_size;
memcpy (buffer, (void*)(((uintptr_t)ramdrv->buffer) + pos), size);