1 #include <hal/ahci/ahci.h>
2 #include <hal/ahci/hba.h>
3 #include <hal/ahci/sata.h>
5 #include <lunaix/mm/valloc.h>
6 #include <lunaix/mm/vmm.h>
7 #include <lunaix/spike.h>
10 sata_read_error(struct hba_port* port)
12 uint32_t tfd = port->regs[HBA_RPxTFD];
13 port->device->last_result.sense_key = (tfd & 0xf000) >> 12;
14 port->device->last_result.error = (tfd & 0x0f00) >> 8;
15 port->device->last_result.status = tfd & 0x00ff;
19 __sata_buffer_io(struct hba_device* dev,
25 assert_msg(((uintptr_t)buffer & 0x3) == 0, "HBA: Bad buffer alignment");
27 struct hba_port* port = dev->port;
28 struct hba_cmdh* header;
29 struct hba_cmdt* table;
30 int slot = hba_prepare_cmd(port, &table, &header, buffer, size);
32 header->options |= HBA_CMDH_WRITE * (write == 1);
34 uint16_t count = ICEIL(size, port->device->block_size);
35 struct sata_reg_fis* fis = (struct sata_reg_fis*)table->command_fis;
37 if ((port->device->flags & HBA_DEV_FEXTLBA)) {
40 fis, write ? ATA_WRITE_DMA_EXT : ATA_READ_DMA_EXT, lba, count);
42 sata_create_fis(fis, write ? ATA_WRITE_DMA : ATA_READ_DMA, lba, count);
46 注意:在ACS-3中(甚至在ACS-4),只有在(READ/WRITE)_DMA_EXT指令中明确注明了需要将这一位置位
47 而并没有在(READ/WRITE)_DMA注明。
48 但是这在ACS-2中是有的!于是这也就导致了先前的测试中,LBA=0根本无法访问,因为此时
49 的访问模式是在CHS下,也就是说LBA=0 => Sector=0,是非法的。
50 所以,我猜测,这要么是QEMU/VirtualBox根据ACS-2来编写的AHCI模拟,
51 要么是标准出错了(毕竟是working draft)
55 int is_ok = ahci_try_send(port, slot);
62 sata_read_buffer(struct hba_device* dev,
67 return __sata_buffer_io(dev, lba, buffer, size, 0);
71 sata_write_buffer(struct hba_device* dev,
76 return __sata_buffer_io(dev, lba, buffer, size, 1);