diff options
Diffstat (limited to 'drivers/ahci.c')
| -rw-r--r-- | drivers/ahci.c | 702 |
1 files changed, 0 insertions, 702 deletions
diff --git a/drivers/ahci.c b/drivers/ahci.c deleted file mode 100644 index 8ceff00925..0000000000 --- a/drivers/ahci.c +++ /dev/null @@ -1,702 +0,0 @@ -/* - * Copyright (C) Freescale Semiconductor, Inc. 2006. All rights reserved. - * Author: Jason Jin<Jason.jin@freescale.com> - * Zhang Wei<wei.zhang@freescale.com> - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - * - * with the reference on libata and ahci drvier in kernel - * - */ -#include <common.h> - -#ifdef CONFIG_SCSI_AHCI - -#include <command.h> -#include <pci.h> -#include <asm/processor.h> -#include <asm/errno.h> -#include <asm/io.h> -#include <malloc.h> -#include <scsi.h> -#include <ata.h> -#include <linux/ctype.h> -#include <ahci.h> - -struct ahci_probe_ent *probe_ent = NULL; -hd_driveid_t *ataid[AHCI_MAX_PORTS]; - -#define writel_with_flush(a,b) do { writel(a,b); readl(b); } while (0) - - -static inline u32 ahci_port_base(u32 base, u32 port) -{ - return base + 0x100 + (port * 0x80); -} - - -static void ahci_setup_port(struct ahci_ioports *port, unsigned long base, - unsigned int port_idx) -{ - base = ahci_port_base(base, port_idx); - - port->cmd_addr = base; - port->scr_addr = base + PORT_SCR; -} - - -#define msleep(a) udelay(a * 1000) -#define ssleep(a) msleep(a * 1000) - -static int waiting_for_cmd_completed(volatile u8 *offset, - int timeout_msec, - u32 sign) -{ - int i; - u32 status; - - for (i = 0; ((status = readl(offset)) & sign) && i < timeout_msec; i++) - msleep(1); - - return (i < timeout_msec) ? 0 : -1; -} - - -static int ahci_host_init(struct ahci_probe_ent *probe_ent) -{ - pci_dev_t pdev = probe_ent->dev; - volatile u8 *mmio = (volatile u8 *)probe_ent->mmio_base; - u32 tmp, cap_save; - u16 tmp16; - int i, j; - volatile u8 *port_mmio; - unsigned short vendor; - - cap_save = readl(mmio + HOST_CAP); - cap_save &= ((1 << 28) | (1 << 17)); - cap_save |= (1 << 27); - - /* global controller reset */ - tmp = readl(mmio + HOST_CTL); - if ((tmp & HOST_RESET) == 0) - writel_with_flush(tmp | HOST_RESET, mmio + HOST_CTL); - - /* reset must complete within 1 second, or - * the hardware should be considered fried. - */ - ssleep(1); - - tmp = readl(mmio + HOST_CTL); - if (tmp & HOST_RESET) { - debug("controller reset failed (0x%x)\n", tmp); - return -1; - } - - writel_with_flush(HOST_AHCI_EN, mmio + HOST_CTL); - writel(cap_save, mmio + HOST_CAP); - writel_with_flush(0xf, mmio + HOST_PORTS_IMPL); - - pci_read_config_word(pdev, PCI_VENDOR_ID, &vendor); - - if (vendor == PCI_VENDOR_ID_INTEL) { - u16 tmp16; - pci_read_config_word(pdev, 0x92, &tmp16); - tmp16 |= 0xf; - pci_write_config_word(pdev, 0x92, tmp16); - } - - probe_ent->cap = readl(mmio + HOST_CAP); - probe_ent->port_map = readl(mmio + HOST_PORTS_IMPL); - probe_ent->n_ports = (probe_ent->cap & 0x1f) + 1; - - debug("cap 0x%x port_map 0x%x n_ports %d\n", - probe_ent->cap, probe_ent->port_map, probe_ent->n_ports); - - for (i = 0; i < probe_ent->n_ports; i++) { - probe_ent->port[i].port_mmio = ahci_port_base((u32) mmio, i); - port_mmio = (u8 *) probe_ent->port[i].port_mmio; - ahci_setup_port(&probe_ent->port[i], (unsigned long)mmio, i); - - /* make sure port is not active */ - tmp = readl(port_mmio + PORT_CMD); - if (tmp & (PORT_CMD_LIST_ON | PORT_CMD_FIS_ON | - PORT_CMD_FIS_RX | PORT_CMD_START)) { - tmp &= ~(PORT_CMD_LIST_ON | PORT_CMD_FIS_ON | - PORT_CMD_FIS_RX | PORT_CMD_START); - writel_with_flush(tmp, port_mmio + PORT_CMD); - - /* spec says 500 msecs for each bit, so - * this is slightly incorrect. - */ - msleep(500); - } - - writel(PORT_CMD_SPIN_UP, port_mmio + PORT_CMD); - - j = 0; - while (j < 100) { - msleep(10); - tmp = readl(port_mmio + PORT_SCR_STAT); - if ((tmp & 0xf) == 0x3) - break; - j++; - } - - tmp = readl(port_mmio + PORT_SCR_ERR); - debug("PORT_SCR_ERR 0x%x\n", tmp); - writel(tmp, port_mmio + PORT_SCR_ERR); - - /* ack any pending irq events for this port */ - tmp = readl(port_mmio + PORT_IRQ_STAT); - debug("PORT_IRQ_STAT 0x%x\n", tmp); - if (tmp) - writel(tmp, port_mmio + PORT_IRQ_STAT); - - writel(1 << i, mmio + HOST_IRQ_STAT); - - /* set irq mask (enables interrupts) */ - writel(DEF_PORT_IRQ, port_mmio + PORT_IRQ_MASK); - - /*register linkup ports */ - tmp = readl(port_mmio + PORT_SCR_STAT); - debug("Port %d status: 0x%x\n", i, tmp); - if ((tmp & 0xf) == 0x03) - probe_ent->link_port_map |= (0x01 << i); - } - - tmp = readl(mmio + HOST_CTL); - debug("HOST_CTL 0x%x\n", tmp); - writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL); - tmp = readl(mmio + HOST_CTL); - debug("HOST_CTL 0x%x\n", tmp); - - pci_read_config_word(pdev, PCI_COMMAND, &tmp16); - tmp |= PCI_COMMAND_MASTER; - pci_write_config_word(pdev, PCI_COMMAND, tmp16); - - return 0; -} - - -static void ahci_print_info(struct ahci_probe_ent *probe_ent) -{ - pci_dev_t pdev = probe_ent->dev; - volatile u8 *mmio = (volatile u8 *)probe_ent->mmio_base; - u32 vers, cap, impl, speed; - const char *speed_s; - u16 cc; - const char *scc_s; - - vers = readl(mmio + HOST_VERSION); - cap = probe_ent->cap; - impl = probe_ent->port_map; - - speed = (cap >> 20) & 0xf; - if (speed == 1) - speed_s = "1.5"; - else if (speed == 2) - speed_s = "3"; - else - speed_s = "?"; - - pci_read_config_word(pdev, 0x0a, &cc); - if (cc == 0x0101) - scc_s = "IDE"; - else if (cc == 0x0106) - scc_s = "SATA"; - else if (cc == 0x0104) - scc_s = "RAID"; - else - scc_s = "unknown"; - - printf("AHCI %02x%02x.%02x%02x " - "%u slots %u ports %s Gbps 0x%x impl %s mode\n", - (vers >> 24) & 0xff, - (vers >> 16) & 0xff, - (vers >> 8) & 0xff, - vers & 0xff, - ((cap >> 8) & 0x1f) + 1, (cap & 0x1f) + 1, speed_s, impl, scc_s); - - printf("flags: " - "%s%s%s%s%s%s" - "%s%s%s%s%s%s%s\n", - cap & (1 << 31) ? "64bit " : "", - cap & (1 << 30) ? "ncq " : "", - cap & (1 << 28) ? "ilck " : "", - cap & (1 << 27) ? "stag " : "", - cap & (1 << 26) ? "pm " : "", - cap & (1 << 25) ? "led " : "", - cap & (1 << 24) ? "clo " : "", - cap & (1 << 19) ? "nz " : "", - cap & (1 << 18) ? "only " : "", - cap & (1 << 17) ? "pmp " : "", - cap & (1 << 15) ? "pio " : "", - cap & (1 << 14) ? "slum " : "", - cap & (1 << 13) ? "part " : ""); -} - -static int ahci_init_one(pci_dev_t pdev) -{ - u32 iobase, vendor; - int rc; - - memset((void *)ataid, 0, sizeof(hd_driveid_t *) * AHCI_MAX_PORTS); - - probe_ent = malloc(sizeof(probe_ent)); - memset(probe_ent, 0, sizeof(probe_ent)); - probe_ent->dev = pdev; - - pci_read_config_dword(pdev, AHCI_PCI_BAR, &iobase); - iobase &= ~0xf; - - probe_ent->host_flags = ATA_FLAG_SATA - | ATA_FLAG_NO_LEGACY - | ATA_FLAG_MMIO - | ATA_FLAG_PIO_DMA - | ATA_FLAG_NO_ATAPI; - probe_ent->pio_mask = 0x1f; - probe_ent->udma_mask = 0x7f; /*Fixme,assume to support UDMA6 */ - - probe_ent->mmio_base = iobase; - - /* Take from kernel: - * JMicron-specific fixup: - * make sure we're in AHCI mode - */ - pci_read_config_word(pdev, PCI_VENDOR_ID, &vendor); - if (vendor == 0x197b) - pci_write_config_byte(pdev, 0x41, 0xa1); - - /* initialize adapter */ - rc = ahci_host_init(probe_ent); - if (rc) - goto err_out; - - ahci_print_info(probe_ent); - - return 0; - - err_out: - return rc; -} - - -#define MAX_DATA_BYTE_COUNT (4*1024*1024) - -static int ahci_fill_sg(u8 port, unsigned char *buf, int buf_len) -{ - struct ahci_ioports *pp = &(probe_ent->port[port]); - struct ahci_sg *ahci_sg = pp->cmd_tbl_sg; - u32 sg_count; - int i; - - sg_count = ((buf_len - 1) / MAX_DATA_BYTE_COUNT) + 1; - if (sg_count > AHCI_MAX_SG) { - printf("Error:Too much sg!\n"); - return -1; - } - - for (i = 0; i < sg_count; i++) { - ahci_sg->addr = - cpu_to_le32((u32) buf + i * MAX_DATA_BYTE_COUNT); - ahci_sg->addr_hi = 0; - ahci_sg->flags_size = cpu_to_le32(0x3fffff & - (buf_len < MAX_DATA_BYTE_COUNT - ? (buf_len - 1) - : (MAX_DATA_BYTE_COUNT - 1))); - ahci_sg++; - buf_len -= MAX_DATA_BYTE_COUNT; - } - - return sg_count; -} - - -static void ahci_fill_cmd_slot(struct ahci_ioports *pp, u32 opts) -{ - pp->cmd_slot->opts = cpu_to_le32(opts); - pp->cmd_slot->status = 0; - pp->cmd_slot->tbl_addr = cpu_to_le32(pp->cmd_tbl & 0xffffffff); - pp->cmd_slot->tbl_addr_hi = 0; -} - - -static void ahci_set_feature(u8 port) -{ - struct ahci_ioports *pp = &(probe_ent->port[port]); - volatile u8 *port_mmio = (volatile u8 *)pp->port_mmio; - u32 cmd_fis_len = 5; /* five dwords */ - u8 fis[20]; - - /*set feature */ - memset(fis, 0, 20); - fis[0] = 0x27; - fis[1] = 1 << 7; - fis[2] = ATA_CMD_SETF; - fis[3] = SETFEATURES_XFER; - fis[12] = __ilog2(probe_ent->udma_mask + 1) + 0x40 - 0x01; - - memcpy((unsigned char *)pp->cmd_tbl, fis, 20); - ahci_fill_cmd_slot(pp, cmd_fis_len); - writel(1, port_mmio + PORT_CMD_ISSUE); - readl(port_mmio + PORT_CMD_ISSUE); - - if (waiting_for_cmd_completed(port_mmio + PORT_CMD_ISSUE, 150, 0x1)) { - printf("set feature error!\n"); - } -} - - -static int ahci_port_start(u8 port) -{ - struct ahci_ioports *pp = &(probe_ent->port[port]); - volatile u8 *port_mmio = (volatile u8 *)pp->port_mmio; - u32 port_status; - u32 mem; - - debug("Enter start port: %d\n", port); - port_status = readl(port_mmio + PORT_SCR_STAT); - debug("Port %d status: %x\n", port, port_status); - if ((port_status & 0xf) != 0x03) { - printf("No Link on this port!\n"); - return -1; - } - - mem = (u32) malloc(AHCI_PORT_PRIV_DMA_SZ + 2048); - if (!mem) { - free(pp); - printf("No mem for table!\n"); - return -ENOMEM; - } - - mem = (mem + 0x800) & (~0x7ff); /* Aligned to 2048-bytes */ - memset((u8 *) mem, 0, AHCI_PORT_PRIV_DMA_SZ); - - /* - * First item in chunk of DMA memory: 32-slot command table, - * 32 bytes each in size - */ - pp->cmd_slot = (struct ahci_cmd_hdr *)mem; - debug("cmd_slot = 0x%x\n", pp->cmd_slot); - mem += (AHCI_CMD_SLOT_SZ + 224); - - /* - * Second item: Received-FIS area - */ - pp->rx_fis = mem; - mem += AHCI_RX_FIS_SZ; - - /* - * Third item: data area for storing a single command - * and its scatter-gather table - */ - pp->cmd_tbl = mem; - debug("cmd_tbl_dma = 0x%x\n", pp->cmd_tbl); - - mem += AHCI_CMD_TBL_HDR; - pp->cmd_tbl_sg = (struct ahci_sg *)mem; - - writel_with_flush((u32) pp->cmd_slot, port_mmio + PORT_LST_ADDR); - - writel_with_flush(pp->rx_fis, port_mmio + PORT_FIS_ADDR); - - writel_with_flush(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX | - PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP | - PORT_CMD_START, port_mmio + PORT_CMD); - - debug("Exit start port %d\n", port); - - return 0; -} - - -static int get_ahci_device_data(u8 port, u8 *fis, int fis_len, u8 *buf, - int buf_len) -{ - - struct ahci_ioports *pp = &(probe_ent->port[port]); - volatile u8 *port_mmio = (volatile u8 *)pp->port_mmio; - u32 opts; - u32 port_status; - int sg_count; - - debug("Enter get_ahci_device_data: for port %d\n", port); - - if (port > probe_ent->n_ports) { - printf("Invaild port number %d\n", port); - return -1; - } - - port_status = readl(port_mmio + PORT_SCR_STAT); - if ((port_status & 0xf) != 0x03) { - debug("No Link on port %d!\n", port); - return -1; - } - - memcpy((unsigned char *)pp->cmd_tbl, fis, fis_len); - - sg_count = ahci_fill_sg(port, buf, buf_len); - opts = (fis_len >> 2) | (sg_count << 16); - ahci_fill_cmd_slot(pp, opts); - - writel_with_flush(1, port_mmio + PORT_CMD_ISSUE); - - if (waiting_for_cmd_completed(port_mmio + PORT_CMD_ISSUE, 150, 0x1)) { - printf("timeout exit!\n"); - return -1; - } - debug("get_ahci_device_data: %d byte transferred.\n", - pp->cmd_slot->status); - - return 0; -} - - -static char *ata_id_strcpy(u16 *target, u16 *src, int len) -{ - int i; - for (i = 0; i < len / 2; i++) - target[i] = le16_to_cpu(src[i]); - return (char *)target; -} - - -static void dump_ataid(hd_driveid_t *ataid) -{ - debug("(49)ataid->capability = 0x%x\n", ataid->capability); - debug("(53)ataid->field_valid =0x%x\n", ataid->field_valid); - debug("(63)ataid->dma_mword = 0x%x\n", ataid->dma_mword); - debug("(64)ataid->eide_pio_modes = 0x%x\n", ataid->eide_pio_modes); - debug("(75)ataid->queue_depth = 0x%x\n", ataid->queue_depth); - debug("(80)ataid->major_rev_num = 0x%x\n", ataid->major_rev_num); - debug("(81)ataid->minor_rev_num = 0x%x\n", ataid->minor_rev_num); - debug("(82)ataid->command_set_1 = 0x%x\n", ataid->command_set_1); - debug("(83)ataid->command_set_2 = 0x%x\n", ataid->command_set_2); - debug("(84)ataid->cfsse = 0x%x\n", ataid->cfsse); - debug("(85)ataid->cfs_enable_1 = 0x%x\n", ataid->cfs_enable_1); - debug("(86)ataid->cfs_enable_2 = 0x%x\n", ataid->cfs_enable_2); - debug("(87)ataid->csf_default = 0x%x\n", ataid->csf_default); - debug("(88)ataid->dma_ultra = 0x%x\n", ataid->dma_ultra); - debug("(93)ataid->hw_config = 0x%x\n", ataid->hw_config); -} - - -/* - * SCSI INQUIRY command operation. - */ -static int ata_scsiop_inquiry(ccb *pccb) -{ - u8 hdr[] = { - 0, - 0, - 0x5, /* claim SPC-3 version compatibility */ - 2, - 95 - 4, - }; - u8 fis[20]; - u8 *tmpid; - u8 port; - - /* Clean ccb data buffer */ - memset(pccb->pdata, 0, pccb->datalen); - - memcpy(pccb->pdata, hdr, sizeof(hdr)); - - if (pccb->datalen <= 35) - return 0; - - memset(fis, 0, 20); - /* Construct the FIS */ - fis[0] = 0x27; /* Host to device FIS. */ - fis[1] = 1 << 7; /* Command FIS. */ - fis[2] = ATA_CMD_IDENT; /* Command byte. */ - - /* Read id from sata */ - port = pccb->target; - if (!(tmpid = malloc(sizeof(hd_driveid_t)))) - return -ENOMEM; - - if (get_ahci_device_data(port, (u8 *) & fis, 20, - tmpid, sizeof(hd_driveid_t))) { - debug("scsi_ahci: SCSI inquiry command failure.\n"); - return -EIO; - } - - if (ataid[port]) - free(ataid[port]); - ataid[port] = (hd_driveid_t *) tmpid; - - memcpy(&pccb->pdata[8], "ATA ", 8); - ata_id_strcpy((u16 *) &pccb->pdata[16], (u16 *)ataid[port]->model, 16); - ata_id_strcpy((u16 *) &pccb->pdata[32], (u16 *)ataid[port]->fw_rev, 4); - - dump_ataid(ataid[port]); - return 0; -} - - -/* - * SCSI READ10 command operation. - */ -static int ata_scsiop_read10(ccb * pccb) -{ - u64 lba = 0; - u32 len = 0; - u8 fis[20]; - - lba = (((u64) pccb->cmd[2]) << 24) | (((u64) pccb->cmd[3]) << 16) - | (((u64) pccb->cmd[4]) << 8) | ((u64) pccb->cmd[5]); - len = (((u32) pccb->cmd[7]) << 8) | ((u32) pccb->cmd[8]); - - /* For 10-byte and 16-byte SCSI R/W commands, transfer - * length 0 means transfer 0 block of data. - * However, for ATA R/W commands, sector count 0 means - * 256 or 65536 sectors, not 0 sectors as in SCSI. - * - * WARNING: one or two older ATA drives treat 0 as 0... - */ - if (!len) - return 0; - memset(fis, 0, 20); - - /* Construct the FIS */ - fis[0] = 0x27; /* Host to device FIS. */ - fis[1] = 1 << 7; /* Command FIS. */ - fis[2] = ATA_CMD_RD_DMA; /* Command byte. */ - - /* LBA address, only support LBA28 in this driver */ - fis[4] = pccb->cmd[5]; - fis[5] = pccb->cmd[4]; - fis[6] = pccb->cmd[3]; - fis[7] = (pccb->cmd[2] & 0x0f) | 0xe0; - - /* Sector Count */ - fis[12] = pccb->cmd[8]; - fis[13] = pccb->cmd[7]; - - /* Read from ahci */ - if (get_ahci_device_data(pccb->target, (u8 *) & fis, 20, - pccb->pdata, pccb->datalen)) { - debug("scsi_ahci: SCSI READ10 command failure.\n"); - return -EIO; - } - - return 0; -} - - -/* - * SCSI READ CAPACITY10 command operation. - */ -static int ata_scsiop_read_capacity10(ccb *pccb) -{ - u8 buf[8]; - - if (!ataid[pccb->target]) { - printf("scsi_ahci: SCSI READ CAPACITY10 command failure. " - "\tNo ATA info!\n" - "\tPlease run SCSI commmand INQUIRY firstly!\n"); - return -EPERM; - } - - memset(buf, 0, 8); - - *(u32 *) buf = le32_to_cpu(ataid[pccb->target]->lba_capacity); - - buf[6] = 512 >> 8; - buf[7] = 512 & 0xff; - - memcpy(pccb->pdata, buf, 8); - - return 0; -} - - -/* - * SCSI TEST UNIT READY command operation. - */ -static int ata_scsiop_test_unit_ready(ccb *pccb) -{ - return (ataid[pccb->target]) ? 0 : -EPERM; -} - - -int scsi_exec(ccb *pccb) -{ - int ret; - - switch (pccb->cmd[0]) { - case SCSI_READ10: - ret = ata_scsiop_read10(pccb); - break; - case SCSI_RD_CAPAC: - ret = ata_scsiop_read_capacity10(pccb); - break; - case SCSI_TST_U_RDY: - ret = ata_scsiop_test_unit_ready(pccb); - break; - case SCSI_INQUIRY: - ret = ata_scsiop_inquiry(pccb); - break; - default: - printf("Unsupport SCSI command 0x%02x\n", pccb->cmd[0]); - return FALSE; - } - - if (ret) { - debug("SCSI command 0x%02x ret errno %d\n", pccb->cmd[0], ret); - return FALSE; - } - return TRUE; - -} - - -void scsi_low_level_init(int busdevfunc) -{ - int i; - u32 linkmap; - - ahci_init_one(busdevfunc); - - linkmap = probe_ent->link_port_map; - - for (i = 0; i < CFG_SCSI_MAX_SCSI_ID; i++) { - if (((linkmap >> i) & 0x01)) { - if (ahci_port_start((u8) i)) { - printf("Can not start port %d\n", i); - continue; - } - ahci_set_feature((u8) i); - } - } -} - - -void scsi_bus_reset(void) -{ - /*Not implement*/ -} - - -void scsi_print_error(ccb * pccb) -{ - /*The ahci error info can be read in the ahci driver*/ -} -#endif |