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Code Issues Releases Wiki Activity

实现了打开、关闭、读取文件的功能

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This commit is contained in:
fslongjin
2022-04-27 20:49:10 +08:00
parent 966d67fcde
commit b3ad8405a4
10 changed files with 258 additions and 105 deletions
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24
kernel/driver/disk/ahci/ahci.c
View File

@ -254,7 +254,7 @@ static bool ahci_read(HBA_PORT *port, uint32_t startl, uint32_t starth, uint32_t
cmdfis->fis_type = FIS_TYPE_REG_H2D;
cmdfis->c = 1; // Command
cmdfis->command = ATA_CMD_READ_DMA_EXT;
cmdfis->command = AHCI_CMD_READ_DMA_EXT;
cmdfis->lba0 = (uint8_t)startl;
cmdfis->lba1 = (uint8_t)(startl >> 8);
@ -269,7 +269,7 @@ static bool ahci_read(HBA_PORT *port, uint32_t startl, uint32_t starth, uint32_t
cmdfis->counth = (count >> 8) & 0xFF;
// The below loop waits until the port is no longer busy before issuing a new command
while ((port->tfd & (ATA_DEV_BUSY | ATA_DEV_DRQ)) && spin < 1000000)
while ((port->tfd & (AHCI_DEV_BUSY | AHCI_DEV_DRQ)) && spin < 1000000)
{
spin++;
}
@ -281,6 +281,7 @@ static bool ahci_read(HBA_PORT *port, uint32_t startl, uint32_t starth, uint32_t
port->ci = 1 << slot; // Issue command
current_pcb->flags |= PROC_NEED_SCHED;
sched_cfs();
int retval = AHCI_SUCCESS;
// Wait for completion
@ -344,7 +345,7 @@ static bool ahci_write(HBA_PORT *port, uint32_t startl, uint32_t starth, uint32_
FIS_REG_H2D *cmdfis = (FIS_REG_H2D *)(&cmdtbl->cfis);
cmdfis->fis_type = FIS_TYPE_REG_H2D;
cmdfis->c = 1; // Command
cmdfis->command = ATA_CMD_WRITE_DMA_EXT;
cmdfis->command = AHCI_CMD_WRITE_DMA_EXT;
cmdfis->lba0 = (uint8_t)startl;
cmdfis->lba1 = (uint8_t)(startl >> 8);
cmdfis->lba2 = (uint8_t)(startl >> 16);
@ -358,7 +359,8 @@ static bool ahci_write(HBA_PORT *port, uint32_t startl, uint32_t starth, uint32_
cmdfis->counth = count >> 8;
// printk("[slot]{%d}", slot);
port->ci = 1; // Issue command
current_pcb->flags |= PROC_NEED_SCHED;
sched_cfs();
int retval = AHCI_SUCCESS;
@ -432,13 +434,13 @@ static struct ahci_request_packet_t *ahci_make_request(long cmd, uint64_t base_a
// 由于ahci不需要中断即可读取磁盘，因此end handler为空
switch (cmd)
{
case ATA_CMD_READ_DMA_EXT:
case AHCI_CMD_READ_DMA_EXT:
pack->blk_pak.end_handler = NULL;
pack->blk_pak.cmd = ATA_CMD_READ_DMA_EXT;
pack->blk_pak.cmd = AHCI_CMD_READ_DMA_EXT;
break;
case ATA_CMD_WRITE_DMA_EXT:
case AHCI_CMD_WRITE_DMA_EXT:
pack->blk_pak.end_handler = NULL;
pack->blk_pak.cmd = ATA_CMD_WRITE_DMA_EXT;
pack->blk_pak.cmd = AHCI_CMD_WRITE_DMA_EXT;
break;
default:
pack->blk_pak.end_handler = NULL;
@ -485,10 +487,10 @@ static long ahci_query_disk()
switch (pack->blk_pak.cmd)
{
case ATA_CMD_READ_DMA_EXT:
case AHCI_CMD_READ_DMA_EXT:
ret_val = ahci_read(&(ahci_devices[pack->ahci_ctrl_num].hba_mem->ports[pack->port_num]), pack->blk_pak.LBA_start & 0xFFFFFFFF, ((pack->blk_pak.LBA_start) >> 32) & 0xFFFFFFFF, pack->blk_pak.count, pack->blk_pak.buffer_vaddr);
break;
case ATA_CMD_WRITE_DMA_EXT:
case AHCI_CMD_WRITE_DMA_EXT:
ret_val = ahci_write(&(ahci_devices[pack->ahci_ctrl_num].hba_mem->ports[pack->port_num]), pack->blk_pak.LBA_start & 0xFFFFFFFF, ((pack->blk_pak.LBA_start) >> 32) & 0xFFFFFFFF, pack->blk_pak.count, pack->blk_pak.buffer_vaddr);
break;
default:
@ -530,7 +532,7 @@ static long ahci_transfer(long cmd, uint64_t base_addr, uint64_t count, uint64_t
{
struct ahci_request_packet_t *pack = NULL;
if (cmd == ATA_CMD_READ_DMA_EXT || cmd == ATA_CMD_WRITE_DMA_EXT)
if (cmd == AHCI_CMD_READ_DMA_EXT || cmd == AHCI_CMD_WRITE_DMA_EXT)
{
pack = ahci_make_request(cmd, base_addr, count, buf, ahci_ctrl_num, port_num);
ahci_submit(pack);

8
kernel/driver/disk/ahci/ahci.h
View File

@ -17,11 +17,11 @@
#define HBA_PxCMD_FR 0x4000
#define HBA_PxCMD_CR 0x8000
#define ATA_DEV_BUSY 0x80
#define ATA_DEV_DRQ 0x08
#define AHCI_DEV_BUSY 0x80
#define AHCI_DEV_DRQ 0x08
#define ATA_CMD_READ_DMA_EXT 0x25
#define ATA_CMD_WRITE_DMA_EXT 0x30
#define AHCI_CMD_READ_DMA_EXT 0x25
#define AHCI_CMD_WRITE_DMA_EXT 0x30
#define HBA_PxIS_TFES (1 << 30) /* TFES - Task File Error Status */