#include <hal/ahci/hba.h>
#include <hal/ahci/sata.h>
#include <hal/ahci/scsi.h>
-#include <hal/ahci/utils.h>
#include <hal/pci.h>
#include <klibc/string.h>
+#include <lunaix/block.h>
+#include <lunaix/isrm.h>
#include <lunaix/mm/mmio.h>
#include <lunaix/mm/pmm.h>
#include <lunaix/mm/valloc.h>
#define HBA_FIS_SIZE 256
#define HBA_CLB_SIZE 1024
+#define HBA_MY_IE (HBA_PxINTR_DHR | HBA_PxINTR_TFEE)
+
// #define DO_HBA_FULL_RESET
LOG_MODULE("AHCI")
-static struct ahci_hba hba;
+struct ahci_hba hba;
-void
-__ahci_hba_isr(isr_param param);
+static char sata_ifs[][20] = { "Not detected",
+ "SATA I (1.5Gbps)",
+ "SATA II (3.0Gbps)",
+ "SATA III (6.0Gbps)" };
+
+extern void
+ahci_fsexport(struct block_dev* bdev, void* fs_node);
+
+extern void
+__ahci_hba_isr(const isr_param* param);
+
+extern void
+__ahci_blkio_handler(struct blkio_req* req);
int
ahci_init_device(struct hba_port* port);
void
achi_register_ops(struct hba_port* port);
+void
+ahci_register_device(struct hba_device* hbadev);
+
unsigned int
ahci_get_port_usage()
{
struct pci_device* ahci_dev = pci_get_device_by_class(AHCI_HBA_CLASS);
assert_msg(ahci_dev, "AHCI: Not found.");
- uintptr_t bar6, size;
- size = pci_bar_sizing(ahci_dev, &bar6, 6);
- assert_msg(bar6 && PCI_BAR_MMIO(bar6), "AHCI: BAR#6 is not MMIO.");
+ struct pci_base_addr* bar6 = &ahci_dev->bar[5];
+ assert_msg(bar6->type & BAR_TYPE_MMIO, "AHCI: BAR#6 is not MMIO.");
pci_reg_t cmd = pci_read_cspace(ahci_dev->cspace_base, PCI_REG_STATUS_CMD);
pci_write_cspace(ahci_dev->cspace_base, PCI_REG_STATUS_CMD, cmd);
- pci_setup_msi(ahci_dev, AHCI_HBA_IV);
- intr_subscribe(AHCI_HBA_IV, __ahci_hba_isr);
+ pci_setup_msi(ahci_dev, isrm_ivexalloc(__ahci_hba_isr));
memset(&hba, 0, sizeof(hba));
- hba.base = (hba_reg_t*)ioremap(PCI_BAR_ADDR_MM(bar6), size);
+ hba.base = (hba_reg_t*)ioremap(bar6->start, bar6->size);
#ifdef DO_HBA_FULL_RESET
// 重置HBA
/* 初始化端口，并置于就绪状态 */
port_regs[HBA_RPxCI] = 0;
- // 需要通过全部置位去清空这些寄存器（相当的奇怪……）
- port_regs[HBA_RPxSERR] = -1;
-
- port_regs[HBA_RPxIE] |= (HBA_PxINTR_D2HR);
+ hba_clear_reg(port_regs[HBA_RPxSERR]);
hba.ports[i] = port;
port_regs[HBA_RPxCMD] |= HBA_PxCMD_ST;
if (!ahci_init_device(port)) {
- kprintf(KERROR "fail to init device");
+ kprintf(KERROR "init fail: 0x%x@p%d\n", port->regs[HBA_RPxSIG], i);
+ continue;
}
+
+ struct hba_device* hbadev = port->device;
+ kprintf(KINFO "sata%d: %s, blk_size=%d, blk=0..%d\n",
+ i,
+ hbadev->model,
+ hbadev->block_size,
+ (uint32_t)hbadev->max_lba);
+
+ ahci_register_device(hbadev);
}
}
-char sata_ifs[][20] = { "Not detected",
- "SATA I (1.5Gbps)",
- "SATA II (3.0Gbps)",
- "SATA III (6.0Gbps)" };
-
void
-__ahci_hba_isr(isr_param param)
+ahci_register_device(struct hba_device* hbadev)
{
- // TODO: hba interrupt
- kprintf(KDEBUG "HBA INTR\n");
+ struct block_dev* bdev =
+ block_alloc_dev(hbadev->model, hbadev, __ahci_blkio_handler);
+
+ bdev->end_lba = hbadev->max_lba;
+ bdev->blk_size = hbadev->block_size;
+
+ block_mount(bdev, ahci_fsexport);
}
void
}
int
-hba_alloc_slot(struct hba_port* port,
- struct hba_cmdt** cmdt,
- struct hba_cmdh** cmdh,
- uint16_t header_options)
+hba_bind_sbuf(struct hba_cmdh* cmdh, struct hba_cmdt* cmdt, struct membuf mbuf)
+{
+ assert_msg(mbuf.size <= 0x400000, "HBA: Buffer too big");
+ cmdh->prdt_len = 1;
+ cmdt->entries[0] = (struct hba_prdte){ .data_base = vmm_v2p(mbuf.buffer),
+ .byte_count = mbuf.size - 1 };
+}
+
+int
+hba_bind_vbuf(struct hba_cmdh* cmdh, struct hba_cmdt* cmdt, struct vecbuf* vbuf)
+{
+ size_t i = 0;
+ struct vecbuf* pos = vbuf;
+
+ do {
+ assert_msg(i < HBA_MAX_PRDTE, "HBA: Too many PRDTEs");
+ assert_msg(pos->buf.size <= 0x400000, "HBA: Buffer too big");
+
+ cmdt->entries[i++] =
+ (struct hba_prdte){ .data_base = vmm_v2p(pos->buf.buffer),
+ .byte_count = pos->buf.size - 1 };
+ pos = list_entry(pos->components.next, struct vecbuf, components);
+ } while (pos != vbuf);
+
+ cmdh->prdt_len = i + 1;
+}
+
+int
+hba_prepare_cmd(struct hba_port* port,
+ struct hba_cmdt** cmdt,
+ struct hba_cmdh** cmdh)
{
int slot = __get_free_slot(port);
assert_msg(slot >= 0, "HBA: No free slot");
// 构建命令头（Command Header）和命令表（Command Table）
struct hba_cmdh* cmd_header = &port->cmdlst[slot];
- struct hba_cmdt* cmd_table = vcalloc_dma(sizeof(struct hba_cmdt));
+ struct hba_cmdt* cmd_table = vzalloc_dma(sizeof(struct hba_cmdt));
memset(cmd_header, 0, sizeof(*cmd_header));
// 将命令表挂到命令头上
cmd_header->cmd_table_base = vmm_v2p(cmd_table);
- cmd_header->options = HBA_CMDH_FIS_LEN(sizeof(struct sata_reg_fis)) |
- HBA_CMDH_CLR_BUSY | (header_options & ~0x1f);
+ cmd_header->options =
+ HBA_CMDH_FIS_LEN(sizeof(struct sata_reg_fis)) | HBA_CMDH_CLR_BUSY;
*cmdh = cmd_header;
*cmdt = cmd_table;
struct hba_cmdt* cmd_table;
struct hba_cmdh* cmd_header;
- // 确保端口是空闲的
- wait_until(!(port->regs[HBA_RPxTFD] & (HBA_PxTFD_BSY)));
-
- int slot = hba_alloc_slot(port, &cmd_table, &cmd_header, 0);
-
- // 清空任何待响应的中断
- port->regs[HBA_RPxIS] = 0;
- port->device = vcalloc(sizeof(struct hba_device));
+ // mask DHR interrupt
+ port->regs[HBA_RPxIE] &= ~HBA_MY_IE;
// 预备DMA接收缓存，用于存放HBA传回的数据
uint16_t* data_in = (uint16_t*)valloc_dma(512);
- cmd_table->entries[0] =
- (struct hba_prdte){ .data_base = vmm_v2p(data_in),
- .byte_count = 511 }; // byte_count是从0开始算的
- cmd_header->prdt_len = 1;
+ int slot = hba_prepare_cmd(port, &cmd_table, &cmd_header);
+ hba_bind_sbuf(
+ cmd_header, cmd_table, (struct membuf){ .buffer = data_in, .size = 512 });
+
+ port->device = vzalloc(sizeof(struct hba_device));
+ port->device->port = port;
// 在命令表中构建命令FIS
struct sata_reg_fis* cmd_fis = (struct sata_reg_fis*)cmd_table->command_fis;
sata_create_fis(cmd_fis, ATA_IDENTIFY_PAKCET_DEVICE, 0, 0);
}
- // PxCI寄存器置位，告诉HBA这儿有个数据需要发送到SATA端口
- port->regs[HBA_RPxCI] = (1 << slot);
-
- wait_until(!(port->regs[HBA_RPxCI] & (1 << slot)));
-
- if ((port->regs[HBA_RPxTFD] & HBA_PxTFD_ERR)) {
- // 有错误
- sata_read_error(port);
+ if (!ahci_try_send(port, slot)) {
goto fail;
}
* SATA AHCI HBA Spec, Section 5.3.7
* SCSI Command Reference Manual, Section 3.26
*/
- struct scsi_cdb16* cdb16 = (struct scsi_cdb16*)cmd_table->atapi_cmd;
sata_create_fis(cmd_fis, ATA_PACKET, 512 << 8, 0);
- scsi_create_packet16(cdb16, SCSI_READ_CAPACITY_16, 0, 512);
- cdb16->misc1 = 0x10; // service action
+ // for dev use 12 bytes cdb, READ_CAPACITY must use the 10 bytes variation.
+ if (port->device->cbd_size == SCSI_CDB12) {
+ struct scsi_cdb12* cdb12 = (struct scsi_cdb12*)cmd_table->atapi_cmd;
+ // ugly tricks to construct 10 byte cdb from 12 byte cdb
+ scsi_create_packet12(cdb12, SCSI_READ_CAPACITY_10, 0, 512 << 8);
+ } else {
+ struct scsi_cdb16* cdb16 = (struct scsi_cdb16*)cmd_table->atapi_cmd;
+ scsi_create_packet16(cdb16, SCSI_READ_CAPACITY_16, 0, 512);
+ cdb16->misc1 = 0x10; // service action
+ }
+
cmd_header->transferred_size = 0;
cmd_header->options |= HBA_CMDH_ATAPI;
- port->regs[HBA_RPxCI] = (1 << slot);
- wait_until(!(port->regs[HBA_RPxCI] & (1 << slot)));
-
- if ((port->regs[HBA_RPxTFD] & HBA_PxTFD_ERR)) {
- // 有错误
- sata_read_error(port);
+ if (!ahci_try_send(port, slot)) {
goto fail;
}
scsi_parse_capacity(port->device, (uint32_t*)data_in);
done:
+ // reset interrupt status and unmask D2HR interrupt
+ port->regs[HBA_RPxIE] |= HBA_MY_IE;
achi_register_ops(port);
vfree_dma(data_in);
return 1;
fail:
+ port->regs[HBA_RPxIE] |= HBA_MY_IE;
vfree_dma(data_in);
vfree_dma(cmd_table);
}
int
-ahci_identify_device(struct hba_port* port)
+ahci_identify_device(struct hba_device* device)
{
// 用于重新识别设备（比如在热插拔的情况下）
- vfree(port->device);
- return ahci_init_device(port);
+ vfree(device);
+ return ahci_init_device(device->port);
}
void
{
port->device->ops.identify = ahci_identify_device;
if (!(port->device->flags & HBA_DEV_FATAPI)) {
- port->device->ops.read_buffer = sata_read_buffer;
- port->device->ops.write_buffer = sata_write_buffer;
+ port->device->ops.submit = sata_submit;
} else {
- port->device->ops.read_buffer = scsi_read_buffer;
- port->device->ops.write_buffer = scsi_write_buffer;
+ port->device->ops.submit = scsi_submit;
}
}
\ No newline at end of file
git://scm.lunaixsky.com / lunaix-os.git / blobdiff