#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 <asm/x86_pmio.h>
+
#include <klibc/string.h>
+#include <lunaix/block.h>
#include <lunaix/mm/mmio.h>
-#include <lunaix/mm/pmm.h>
#include <lunaix/mm/valloc.h>
-#include <lunaix/mm/vmm.h>
+#include <lunaix/mm/page.h>
#include <lunaix/spike.h>
#include <lunaix/syslog.h>
#define HBA_FIS_SIZE 256
#define HBA_CLB_SIZE 1024
+#define HBA_MY_IE (HBA_PxINTR_DHR | HBA_PxINTR_TFE | HBA_PxINTR_OF)
+#define AHCI_DEVCLASS DEVCLASS(LUNAIX, STORAGE, SATA)
+
+// #define DO_HBA_FULL_RESET
+
LOG_MODULE("AHCI")
-static struct ahci_hba hba;
+static DEFINE_LLIST(ahcis);
-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)" };
+
+static struct devclass ahci_class = AHCI_DEVCLASS;
+
+extern void
+ahci_fsexport(struct block_dev* bdev, void* fs_node);
+
+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);
-unsigned int
-ahci_get_port_usage()
-{
- return hba.ports_bmp;
-}
+void
+ahci_register_device(struct hba_device* hbadev);
-struct hba_port*
-ahci_get_port(unsigned int index)
+void
+__hba_reset_port(hba_reg_t* port_reg)
{
- if (index >= 32) {
- return 0;
+ // 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;
}
- return hba.ports[index];
+ // 如果port未响应，则继续执行重置
+ port_reg[HBA_RPxSCTL] = (port_reg[HBA_RPxSCTL] & ~0xf) | 1;
+ port_delay(100000); // 等待至少一毫秒，差不多就行了
+ port_reg[HBA_RPxSCTL] &= ~0xf;
}
-void
-ahci_init()
+struct ahci_driver*
+ahci_driver_init(struct ahci_driver_param* param)
{
- 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.");
-
- pci_reg_t cmd = pci_read_cspace(ahci_dev->cspace_base, PCI_REG_STATUS_CMD);
+ struct ahci_driver* ahci_drv = vzalloc(sizeof(*ahci_drv));
+ struct ahci_hba* hba = &ahci_drv->hba;
+ ahci_drv->id = param->irq->vector;
- // 禁用传统中断（因为我们使用MSI），启用MMIO访问，允许PCI设备间访问
- cmd |= (PCI_RCMD_MM_ACCESS | PCI_RCMD_DISABLE_INTR | PCI_RCMD_BUS_MASTER);
+ irq_set_payload(param->irq, &ahcis);
+ llist_append(&ahcis, &ahci_drv->ahci_drvs);
- 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);
-
- memset(&hba, 0, sizeof(hba));
-
- hba.base = (hba_reg_t*)ioremap(PCI_BAR_ADDR_MM(bar6), size);
+ hba->base = (hba_reg_t*)ioremap(param->mmio_base, param->mmio_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));
+ 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;
- hba.base[HBA_RGHC] |= HBA_RGHC_INTR_ENABLE;
+ hba->base[HBA_RGHC] |= HBA_RGHC_ACHI_ENABLE;
+ hba->base[HBA_RGHC] |= HBA_RGHC_INTR_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_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->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 ------ */
- uintptr_t clb_pg_addr, fis_pg_addr, clb_pa, fis_pa;
+ ptr_t clb_pg_addr = 0, fis_pg_addr = 0;
+ ptr_t clb_pa = 0, fis_pa = 0;
+
for (size_t i = 0, fisp = 0, clbp = 0; i < 32;
i++, pmap >>= 1, fisp = (fisp + 1) % 16, clbp = (clbp + 1) % 4) {
if (!(pmap & 0x1)) {
struct hba_port* port =
(struct hba_port*)valloc(sizeof(struct hba_port));
hba_reg_t* port_regs =
- (hba_reg_t*)(&hba.base[HBA_RPBASE + i * HBA_RPSIZE]);
+ (hba_reg_t*)(&hba->base[HBA_RPBASE + i * HBA_RPSIZE]);
+#ifndef DO_HBA_FULL_RESET
+ __hba_reset_port(port_regs);
+#endif
+
+ struct leaflet* leaflet;
if (!clbp) {
// 每页最多4个命令队列
- clb_pa = pmm_alloc_page(KERNEL_PID, PP_FGLOCKED);
- clb_pg_addr = ioremap(clb_pa, 0x1000);
- memset(clb_pg_addr, 0, 0x1000);
+ leaflet = alloc_leaflet(0);
+ clb_pa = leaflet_addr(leaflet);
+ clb_pg_addr = vmap(leaflet, KERNEL_DATA);
+ memset((void*)clb_pg_addr, 0, 0x1000);
}
if (!fisp) {
// 每页最多16个FIS
- fis_pa = pmm_alloc_page(KERNEL_PID, PP_FGLOCKED);
- fis_pg_addr = ioremap(fis_pa, 0x1000);
- memset(fis_pg_addr, 0, 0x1000);
+ leaflet = alloc_leaflet(0);
+ fis_pa = leaflet_addr(leaflet);
+ fis_pg_addr = vmap(leaflet, KERNEL_DATA);
+ memset((void*)fis_pg_addr, 0, 0x1000);
}
/* 重定向CLB与FIS */
port_regs[HBA_RPxCLB] = clb_pa + clbp * HBA_CLB_SIZE;
port_regs[HBA_RPxFB] = fis_pa + fisp * HBA_FIS_SIZE;
- *port = (struct hba_port){ .regs = port_regs,
- .ssts = port_regs[HBA_RPxSSTS],
- .cmdlst = clb_pg_addr + clbp * HBA_CLB_SIZE,
- .fis = fis_pg_addr + fisp * HBA_FIS_SIZE };
+ *port = (struct hba_port){
+ .regs = port_regs,
+ .ssts = port_regs[HBA_RPxSSTS],
+ .cmdlst = (struct hba_cmdh*)(clb_pg_addr + clbp * HBA_CLB_SIZE),
+ .fis = (void*)(fis_pg_addr + fisp * HBA_FIS_SIZE),
+ .hba = 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;
+ hba_clear_reg(port_regs[HBA_RPxSERR]);
- port_regs[HBA_RPxIE] |= (HBA_PxINTR_DMA);
- port_regs[HBA_RPxIE] |= (HBA_PxINTR_D2HR);
+ hba->ports[i] = port;
- hba.ports[i] = port;
+ if (!HBA_RPxSSTS_IF(port->ssts)) {
+ continue;
+ }
- 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;
+ 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)) {
+ ERROR("init fail: 0x%x@p%d", port->regs[HBA_RPxSIG], i);
+ continue;
}
- }
-}
-char sata_ifs[][20] = { "Not detected",
- "SATA I (1.5Gbps)",
- "SATA II (3.0Gbps)",
- "SATA III (6.0Gbps)" };
+ struct hba_device* hbadev = port->device;
+ kprintf(KINFO "sata%d: %s, blk_size=%d, blk=0..%d",
+ i,
+ hbadev->model,
+ hbadev->block_size,
+ (u32_t)hbadev->max_lba);
-void
-__ahci_hba_isr(isr_param param)
-{
- // TODO: hba interrupt
- kprintf(KDEBUG "HBA INTR\n");
+ ahci_register_device(hbadev);
+ }
+
+ return ahci_drv;
}
void
-ahci_list_device()
+ahci_register_device(struct hba_device* hbadev)
{
- kprintf(KINFO "Version: %x; Ports: %d; Slot: %d\n",
- hba.version,
- hba.ports_num,
- hba.cmd_slots);
- struct hba_port* port;
- for (size_t i = 0; i < 32; i++) {
- port = hba.ports[i];
-
- // 愚蠢的gcc似乎认为 struct hba_port* 不可能为空
- // 所以将这个非常关键的if给优化掉了。
- // 这里将指针强制转换为整数，欺骗gcc :)
- if ((uintptr_t)port == 0) {
- continue;
- }
-
- int device_state = HBA_RPxSSTS_IF(port->ssts);
+ struct block_dev* bdev =
+ block_alloc_dev(hbadev->model, hbadev, __ahci_blkio_handler);
- kprintf("\t Port %d: %s (%x)\n",
- i,
- &sata_ifs[device_state],
- port->regs[HBA_RPxSIG]);
+ bdev->end_lba = hbadev->max_lba;
+ bdev->blk_size = hbadev->block_size;
+ bdev->class = &ahci_class;
- struct hba_device* dev_info = port->device;
- if (!device_state || !dev_info) {
- continue;
- }
- kprintf("\t\t capacity: %d KiB\n",
- (dev_info->max_lba * dev_info->block_size) >> 10);
- kprintf("\t\t block size: %dB\n", dev_info->block_size);
- kprintf("\t\t model: %s\n", &dev_info->model);
- kprintf("\t\t serial: %s\n", &dev_info->serial_num);
- }
+ block_mount(bdev, ahci_fsexport);
}
int
hba_reg_t pxsact = port->regs[HBA_RPxSACT];
hba_reg_t pxci = port->regs[HBA_RPxCI];
hba_reg_t free_bmp = pxsact | pxci;
- uint32_t i = 0;
- for (; i <= hba.cmd_slots && (free_bmp & 0x1); i++, free_bmp >>= 1)
+ u32_t i = 0;
+ for (; i <= port->hba->cmd_slots && (free_bmp & 0x1); i++, free_bmp >>= 1)
;
- return i | -(i > hba.cmd_slots);
+ return i | -(i > port->hba->cmd_slots);
}
void
sata_create_fis(struct sata_reg_fis* cmd_fis,
- uint8_t command,
- uint64_t lba,
- uint16_t sector_count)
+ u8_t command,
+ lba_t lba,
+ u16_t sector_count)
{
cmd_fis->head.type = SATA_REG_FIS_H2D;
cmd_fis->head.options = SATA_REG_FIS_COMMAND;
}
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 <= 0x400000U, "HBA: Buffer too big");
+ cmdh->prdt_len = 1;
+ cmdt->entries[0] =
+ (struct hba_prdte){ .data_base = vmm_v2p((ptr_t)mbuf.buffer),
+ .byte_count = mbuf.size - 1 };
+
+ return 0;
+}
+
+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 <= 0x400000U, "HBA: Buffer too big");
+ assert_msg(pos->buf.size, "HBA: expect a non-zero buffer size");
+
+ cmdt->entries[i++] =
+ (struct hba_prdte){ .data_base = vmm_v2p((ptr_t)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;
+
+ return 0;
+}
+
+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->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->cmd_table_base = vmm_v2p((ptr_t)cmd_table);
+ 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);
+ u16_t* data_in = (u16_t*)valloc_dma(512);
+
+ int slot = hba_prepare_cmd(port, &cmd_table, &cmd_header);
+ hba_bind_sbuf(
+ cmd_header, cmd_table, (struct membuf){ .buffer = data_in, .size = 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;
+ port->device = vzalloc(sizeof(struct hba_device));
+ port->device->port = port;
+ port->device->hba = port->hba;
// 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);
+ scsi_parse_capacity(port->device, (u32_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);
+ // FIXME this is not right...
+ 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