kamkow1
0533c2705d
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122 lines
3.2 KiB
C
122 lines
3.2 KiB
C
#include <device/device.h>
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#include <device/partdrv.h>
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#include <devices.h>
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#include <libk/std.h>
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#include <mm/liballoc.h>
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#include <proc/proc.h>
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#include <proc/reschedule.h>
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#include <status.h>
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bool partdrv_init (struct device* device, void* arg) {
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struct partdrv_init* init = arg;
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struct partdrv* partdrv = malloc (sizeof (*partdrv));
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if (partdrv == NULL)
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return false;
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partdrv->start_sector = init->start_sector;
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partdrv->super = init->super;
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partdrv->total_size = init->total_size;
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device->udata = partdrv;
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return true;
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}
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void partdrv_fini (struct device* device) {
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struct partdrv* partdrv = device->udata;
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free (partdrv);
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}
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int partdrv_read (struct device* device, struct proc* proc, struct reschedule_ctx* rctx, void* a1,
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void* a2, void* a3, void* a4) {
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(void)proc, (void)rctx, (void)a4;
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if (a1 == NULL || a2 == NULL || a3 == NULL)
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return -ST_BAD_ADDRESS_SPACE;
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struct partdrv* partdrv = device->udata;
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struct device* super = partdrv->super;
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size_t sector = *(size_t*)a1 + partdrv->start_sector;
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size_t sector_count = *(size_t*)a2;
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uint8_t* buffer = a3;
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spin_lock (&super->lock);
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int ret = device_op (super, XDRV_READ, NULL, NULL, §or, §or_count, buffer);
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spin_unlock (&super->lock);
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return ret;
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}
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int partdrv_write (struct device* device, struct proc* proc, struct reschedule_ctx* rctx, void* a1,
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void* a2, void* a3, void* a4) {
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(void)proc, (void)rctx, (void)a4;
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if (a1 == NULL || a2 == NULL || a3 == NULL)
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return -ST_BAD_ADDRESS_SPACE;
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struct partdrv* partdrv = device->udata;
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struct device* super = partdrv->super;
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size_t sector = *(size_t*)a1 + partdrv->start_sector;
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size_t sector_count = *(size_t*)a2;
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uint8_t* buffer = a3;
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spin_lock (&super->lock);
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int ret = device_op (super, XDRV_WRITE, NULL, NULL, §or, §or_count, buffer);
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spin_unlock (&super->lock);
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return ret;
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}
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int partdrv_get_device_type (struct device* device, struct proc* proc, struct reschedule_ctx* rctx,
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void* a1, void* a2, void* a3, void* a4) {
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(void)proc, (void)rctx, (void)device, (void)a2, (void)a3, (void)a4;
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if (a1 == NULL)
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return -ST_BAD_ADDRESS_SPACE;
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int* device_type = (int*)a1;
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*device_type = XDRV_TYPE_PARTDRV;
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return ST_OK;
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}
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int partdrv_get_sector_size (struct device* device, struct proc* proc, struct reschedule_ctx* rctx,
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void* a1, void* a2, void* a3, void* a4) {
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(void)proc, (void)rctx, (void)a2, (void)a3, (void)a4;
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if (a1 == NULL)
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return -ST_BAD_ADDRESS_SPACE;
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size_t* secsize = (size_t*)a1;
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struct partdrv* partdrv = device->udata;
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spin_lock (&partdrv->super->lock);
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device_op (partdrv->super, XDRV_GET_SECTOR_SIZE, NULL, NULL, secsize);
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spin_unlock (&partdrv->super->lock);
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return ST_OK;
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}
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int partdrv_get_size (struct device* device, struct proc* proc, struct reschedule_ctx* rctx,
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void* a1, void* a2, void* a3, void* a4) {
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(void)proc, (void)rctx, (void)a2, (void)a3, (void)a4;
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if (a1 == NULL)
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return -ST_BAD_ADDRESS_SPACE;
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size_t* size = (size_t*)a1;
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struct partdrv* partdrv = device->udata;
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*size = partdrv->total_size;
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return ST_OK;
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}
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