#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 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()
+{
+ return hba.ports_bmp;
+}
+
+struct hba_port*
+ahci_get_port(unsigned int index)
+{
+ if (index >= 32) {
+ return 0;
+ }
+ return hba.ports[index];
+}
+
+void
+__hba_reset_port(hba_reg_t* port_reg)
+{
+ // 根据：SATA-AHCI spec section 10.4.2 描述的端口重置流程
+ port_reg[HBA_RPxCMD] &= ~HBA_PxCMD_ST;
+ port_reg[HBA_RPxCMD] &= ~HBA_PxCMD_FRE;
+ int cnt = wait_until_expire(!(port_reg[HBA_RPxCMD] & HBA_PxCMD_CR), 500000);
+ if (cnt) {
+ return;
+ }
+ // 如果port未响应，则继续执行重置
+ port_reg[HBA_RPxSCTL] = (port_reg[HBA_RPxSCTL] & ~0xf) | 1;
+ io_delay(100000); //等待至少一毫秒，差不多就行了
+ port_reg[HBA_RPxSCTL] &= ~0xf;
+}
+
void
ahci_init()
{
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
hba.base[HBA_RGHC] |= HBA_RGHC_RESET;
wait_until(!(hba.base[HBA_RGHC] & HBA_RGHC_RESET));
+#endif
// 启用AHCI工作模式，启用中断
hba.base[HBA_RGHC] |= HBA_RGHC_ACHI_ENABLE;
// As per section 3.1.1, this is 0 based value.
hba_reg_t cap = hba.base[HBA_RCAP];
+ hba_reg_t pmap = hba.base[HBA_RPI];
+
hba.ports_num = (cap & 0x1f) + 1; // CAP.PI
hba.cmd_slots = (cap >> 8) & 0x1f; // CAP.NCS
hba.version = hba.base[HBA_RVER];
+ hba.ports_bmp = pmap;
/* ------ HBA端口配置 ------ */
- hba_reg_t pmap = hba.base[HBA_RPI];
uintptr_t clb_pg_addr, fis_pg_addr, clb_pa, fis_pa;
for (size_t i = 0, fisp = 0, clbp = 0; i < 32;
i++, pmap >>= 1, fisp = (fisp + 1) % 16, clbp = (clbp + 1) % 4) {
hba_reg_t* port_regs =
(hba_reg_t*)(&hba.base[HBA_RPBASE + i * HBA_RPSIZE]);
+#ifndef DO_HBA_FULL_RESET
+ __hba_reset_port(port_regs);
+#endif
+
if (!clbp) {
// 每页最多4个命令队列
clb_pa = pmm_alloc_page(KERNEL_PID, PP_FGLOCKED);
/* 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_DMA);
- port_regs[HBA_RPxIE] |= (HBA_PxINTR_D2HR);
+ hba_clear_reg(port_regs[HBA_RPxSERR]);
hba.ports[i] = port;
- if (HBA_RPxSSTS_IF(port->ssts)) {
- wait_until(!(port_regs[HBA_RPxCMD] & HBA_PxCMD_CR));
- port_regs[HBA_RPxCMD] |= HBA_PxCMD_FRE;
- port_regs[HBA_RPxCMD] |= HBA_PxCMD_ST;
+ if (!HBA_RPxSSTS_IF(port->ssts)) {
+ continue;
+ }
+
+ wait_until(!(port_regs[HBA_RPxCMD] & HBA_PxCMD_CR));
+ port_regs[HBA_RPxCMD] |= HBA_PxCMD_FRE;
+ port_regs[HBA_RPxCMD] |= HBA_PxCMD_ST;
- if (!ahci_init_device(port)) {
- kprintf(KERROR "fail to init device");
- }
+ if (!ahci_init_device(port)) {
+ 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, sector_size=%dB, sector=%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
kprintf("\t Port %d: %s (%x)\n",
i,
&sata_ifs[device_state],
- port->regs[HBA_RPxSIG]);
+ port->device->flags);
struct hba_device* dev_info = port->device;
if (!device_state || !dev_info) {
}
kprintf("\t\t capacity: %d KiB\n",
(dev_info->max_lba * dev_info->block_size) >> 10);
- kprintf("\t\t sector size: %dB\n", dev_info->block_size);
+ kprintf("\t\t block size: %dB\n", dev_info->block_size);
+ kprintf("\t\t block/sector: %d\n", dev_info->block_per_sec);
+ kprintf("\t\t alignment: %dB\n", dev_info->alignment_offset);
+ kprintf("\t\t capabilities: %x\n", dev_info->capabilities);
kprintf("\t\t model: %s\n", &dev_info->model);
kprintf("\t\t serial: %s\n", &dev_info->serial_num);
}
void
sata_create_fis(struct sata_reg_fis* cmd_fis,
uint8_t command,
- uint32_t lba_lo,
- uint32_t lba_hi,
+ uint64_t lba,
uint16_t sector_count)
{
cmd_fis->head.type = SATA_REG_FIS_H2D;
cmd_fis->head.status_cmd = command;
cmd_fis->dev = 0;
- cmd_fis->lba0 = SATA_LBA_COMPONENT(lba_lo, 0);
- cmd_fis->lba8 = SATA_LBA_COMPONENT(lba_lo, 8);
- cmd_fis->lba16 = SATA_LBA_COMPONENT(lba_lo, 16);
- cmd_fis->lba24 = SATA_LBA_COMPONENT(lba_lo, 24);
+ cmd_fis->lba0 = SATA_LBA_COMPONENT(lba, 0);
+ cmd_fis->lba8 = SATA_LBA_COMPONENT(lba, 8);
+ cmd_fis->lba16 = SATA_LBA_COMPONENT(lba, 16);
+ cmd_fis->lba24 = SATA_LBA_COMPONENT(lba, 24);
- cmd_fis->lba32 = SATA_LBA_COMPONENT(lba_hi, 0);
- cmd_fis->lba40 = SATA_LBA_COMPONENT(lba_hi, 8);
+ cmd_fis->lba32 = SATA_LBA_COMPONENT(lba, 32);
+ cmd_fis->lba40 = SATA_LBA_COMPONENT(lba, 40);
cmd_fis->count = sector_count;
}
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.buffer <= 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, *n;
+
+ llist_for_each(pos, n, &vbuf->components, components)
+ {
+ assert_msg(i < HBA_MAX_PRDTE, "HBA: Too many PRDTEs");
+ assert_msg(pos->buf.buffer <= 0x400000, "HBA: Buffer too big");
+
+ cmdt->entries[i++] =
+ (struct hba_prdte){ .data_base = vmm_v2p(pos->buf.buffer),
+ .byte_count = pos->buf.size - 1 };
+ }
+
+ 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 = valloc_dma(sizeof(struct hba_cmdt));
+ struct hba_cmdt* cmd_table = vzalloc_dma(sizeof(struct hba_cmdt));
memset(cmd_header, 0, sizeof(*cmd_header));
- memset(cmd_table, 0, sizeof(*cmd_table));
// 将命令表挂到命令头上
- cmd_header->prdt_len = 1;
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;
- 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 = valloc(sizeof(struct hba_device));
- port->device->signature = port->regs[HBA_RPxSIG];
+ // mask DHR interrupt
+ port->regs[HBA_RPxIE] &= ~HBA_PxINTR_DHR;
// 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;
// 根据设备类型使用合适的命令
- if (port->device->signature == HBA_DEV_SIG_ATA) {
+ if (port->regs[HBA_RPxSIG] == HBA_DEV_SIG_ATA) {
// ATA 一般为硬盘
- sata_create_fis(cmd_fis, ATA_IDENTIFY_DEVICE, 0, 0, 0);
+ sata_create_fis(cmd_fis, ATA_IDENTIFY_DEVICE, 0, 0);
} else {
// ATAPI 一般为光驱，软驱，或者磁带机
- sata_create_fis(cmd_fis, ATA_IDENTIFY_PAKCET_DEVICE, 0, 0, 0);
+ port->device->flags |= HBA_DEV_FATAPI;
+ 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 (!ahci_try_send(port, slot)) {
+ goto fail;
+ }
/*
等待数据到达内存
*/
ahci_parse_dev_info(port->device, data_in);
- if (port->device->signature == HBA_DEV_SIG_ATA) {
+ if (!(port->device->flags & HBA_DEV_FATAPI)) {
goto done;
}
* SATA AHCI HBA Spec, Section 5.3.7
* SCSI Command Reference Manual, Section 3.26
*/
- sata_create_fis(cmd_fis, ATA_PACKET, 512 << 8, 0, 0);
- struct scsi_cdb16* cdb16 = (struct scsi_cdb16*)cmd_table->atapi_cmd;
- scsi_create_packet16(cdb16, SCSI_READ_CAPACITY_16, 0, 0, 512);
- cdb16->misc1 = 0x10; // service action
+
+ sata_create_fis(cmd_fis, ATA_PACKET, 512 << 8, 0);
+
+ // 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 (!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_PxINTR_DHR;
+ achi_register_ops(port);
+
vfree_dma(data_in);
vfree_dma(cmd_table);
return 1;
+
+fail:
+ port->regs[HBA_RPxIE] |= HBA_PxINTR_DHR;
+ vfree_dma(data_in);
+ vfree_dma(cmd_table);
+
+ return 0;
}
-// TODO: Support ATAPI Device.
\ No newline at end of file
+int
+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(device);
+ return ahci_init_device(device->port);
+}
+
+void
+achi_register_ops(struct hba_port* port)
+{
+ port->device->ops.identify = ahci_identify_device;
+ if (!(port->device->flags & HBA_DEV_FATAPI)) {
+ port->device->ops.submit = sata_submit;
+ } else {
+ port->device->ops.submit = scsi_submit;
+ }
+}
\ No newline at end of file
git://scm.lunaixsky.com / lunaix-os.git / blobdiff