593 lines
16 KiB
C
593 lines
16 KiB
C
/*
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* (C) Copyright 2001
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* Denis Peter, MPL AG Switzerland
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <inttypes.h>
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#include <pci.h>
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#include <scsi.h>
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#ifdef CONFIG_SCSI_DEV_LIST
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#define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST
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#else
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#ifdef CONFIG_SCSI_SYM53C8XX
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#define SCSI_VEND_ID 0x1000
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#ifndef CONFIG_SCSI_DEV_ID
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#define SCSI_DEV_ID 0x0001
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#else
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#define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
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#endif
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#elif defined CONFIG_SATA_ULI5288
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#define SCSI_VEND_ID 0x10b9
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#define SCSI_DEV_ID 0x5288
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#elif !defined(CONFIG_SCSI_AHCI_PLAT)
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#error no scsi device defined
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#endif
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#define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
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#endif
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#if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
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const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
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#endif
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static ccb tempccb; /* temporary scsi command buffer */
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static unsigned char tempbuff[512]; /* temporary data buffer */
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static int scsi_max_devs; /* number of highest available scsi device */
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static int scsi_curr_dev; /* current device */
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static struct blk_desc scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
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/* almost the maximum amount of the scsi_ext command.. */
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#define SCSI_MAX_READ_BLK 0xFFFF
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#define SCSI_LBA48_READ 0xFFFFFFF
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#ifdef CONFIG_SYS_64BIT_LBA
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void scsi_setup_read16(ccb *pccb, lbaint_t start, unsigned long blocks)
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{
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pccb->cmd[0] = SCSI_READ16;
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pccb->cmd[1] = pccb->lun << 5;
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pccb->cmd[2] = (unsigned char)(start >> 56) & 0xff;
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pccb->cmd[3] = (unsigned char)(start >> 48) & 0xff;
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pccb->cmd[4] = (unsigned char)(start >> 40) & 0xff;
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pccb->cmd[5] = (unsigned char)(start >> 32) & 0xff;
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pccb->cmd[6] = (unsigned char)(start >> 24) & 0xff;
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pccb->cmd[7] = (unsigned char)(start >> 16) & 0xff;
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pccb->cmd[8] = (unsigned char)(start >> 8) & 0xff;
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pccb->cmd[9] = (unsigned char)start & 0xff;
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pccb->cmd[10] = 0;
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pccb->cmd[11] = (unsigned char)(blocks >> 24) & 0xff;
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pccb->cmd[12] = (unsigned char)(blocks >> 16) & 0xff;
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pccb->cmd[13] = (unsigned char)(blocks >> 8) & 0xff;
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pccb->cmd[14] = (unsigned char)blocks & 0xff;
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pccb->cmd[15] = 0;
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pccb->cmdlen = 16;
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pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
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debug("scsi_setup_read16: cmd: %02X %02X startblk %02X%02X%02X%02X%02X%02X%02X%02X blccnt %02X%02X%02X%02X\n",
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pccb->cmd[0], pccb->cmd[1],
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pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
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pccb->cmd[6], pccb->cmd[7], pccb->cmd[8], pccb->cmd[9],
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pccb->cmd[11], pccb->cmd[12], pccb->cmd[13], pccb->cmd[14]);
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}
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#endif
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void scsi_setup_read_ext(ccb *pccb, lbaint_t start, unsigned short blocks)
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{
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pccb->cmd[0] = SCSI_READ10;
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pccb->cmd[1] = pccb->lun << 5;
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pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff;
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pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff;
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pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff;
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pccb->cmd[5] = (unsigned char)start & 0xff;
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pccb->cmd[6] = 0;
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pccb->cmd[7] = (unsigned char)(blocks >> 8) & 0xff;
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pccb->cmd[8] = (unsigned char)blocks & 0xff;
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pccb->cmd[6] = 0;
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pccb->cmdlen = 10;
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pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
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debug("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
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pccb->cmd[0], pccb->cmd[1],
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pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
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pccb->cmd[7], pccb->cmd[8]);
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}
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void scsi_setup_write_ext(ccb *pccb, lbaint_t start, unsigned short blocks)
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{
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pccb->cmd[0] = SCSI_WRITE10;
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pccb->cmd[1] = pccb->lun << 5;
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pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff;
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pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff;
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pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff;
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pccb->cmd[5] = (unsigned char)start & 0xff;
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pccb->cmd[6] = 0;
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pccb->cmd[7] = ((unsigned char)(blocks >> 8)) & 0xff;
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pccb->cmd[8] = (unsigned char)blocks & 0xff;
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pccb->cmd[9] = 0;
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pccb->cmdlen = 10;
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pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
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debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
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__func__,
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pccb->cmd[0], pccb->cmd[1],
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pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
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pccb->cmd[7], pccb->cmd[8]);
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}
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void scsi_setup_read6(ccb *pccb, lbaint_t start, unsigned short blocks)
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{
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pccb->cmd[0] = SCSI_READ6;
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pccb->cmd[1] = pccb->lun << 5 | ((unsigned char)(start >> 16) & 0x1f);
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pccb->cmd[2] = (unsigned char)(start >> 8) & 0xff;
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pccb->cmd[3] = (unsigned char)start & 0xff;
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pccb->cmd[4] = (unsigned char)blocks & 0xff;
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pccb->cmd[5] = 0;
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pccb->cmdlen = 6;
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pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
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debug("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
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pccb->cmd[0], pccb->cmd[1],
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pccb->cmd[2], pccb->cmd[3], pccb->cmd[4]);
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}
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void scsi_setup_inquiry(ccb *pccb)
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{
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pccb->cmd[0] = SCSI_INQUIRY;
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pccb->cmd[1] = pccb->lun << 5;
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pccb->cmd[2] = 0;
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pccb->cmd[3] = 0;
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if (pccb->datalen > 255)
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pccb->cmd[4] = 255;
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else
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pccb->cmd[4] = (unsigned char)pccb->datalen;
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pccb->cmd[5] = 0;
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pccb->cmdlen = 6;
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pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
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}
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#ifdef CONFIG_BLK
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static ulong scsi_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
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void *buffer)
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#else
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static ulong scsi_read(struct blk_desc *block_dev, lbaint_t blknr,
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lbaint_t blkcnt, void *buffer)
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#endif
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{
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#ifdef CONFIG_BLK
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struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
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#endif
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int device = block_dev->devnum;
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lbaint_t start, blks;
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uintptr_t buf_addr;
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unsigned short smallblks = 0;
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ccb *pccb = (ccb *)&tempccb;
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device &= 0xff;
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/* Setup device */
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pccb->target = scsi_dev_desc[device].target;
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pccb->lun = scsi_dev_desc[device].lun;
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buf_addr = (unsigned long)buffer;
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start = blknr;
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blks = blkcnt;
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debug("\nscsi_read: dev %d startblk " LBAF
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", blccnt " LBAF " buffer %lx\n",
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device, start, blks, (unsigned long)buffer);
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do {
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pccb->pdata = (unsigned char *)buf_addr;
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#ifdef CONFIG_SYS_64BIT_LBA
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if (start > SCSI_LBA48_READ) {
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unsigned long blocks;
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blocks = min_t(lbaint_t, blks, SCSI_MAX_READ_BLK);
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pccb->datalen = scsi_dev_desc[device].blksz * blocks;
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scsi_setup_read16(pccb, start, blocks);
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start += blocks;
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blks -= blocks;
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} else
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#endif
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if (blks > SCSI_MAX_READ_BLK) {
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pccb->datalen = scsi_dev_desc[device].blksz *
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SCSI_MAX_READ_BLK;
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smallblks = SCSI_MAX_READ_BLK;
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scsi_setup_read_ext(pccb, start, smallblks);
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start += SCSI_MAX_READ_BLK;
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blks -= SCSI_MAX_READ_BLK;
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} else {
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pccb->datalen = scsi_dev_desc[device].blksz * blks;
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smallblks = (unsigned short)blks;
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scsi_setup_read_ext(pccb, start, smallblks);
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start += blks;
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blks = 0;
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}
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debug("scsi_read_ext: startblk " LBAF
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", blccnt %x buffer %" PRIXPTR "\n",
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start, smallblks, buf_addr);
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if (scsi_exec(pccb) != true) {
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scsi_print_error(pccb);
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blkcnt -= blks;
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break;
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}
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buf_addr += pccb->datalen;
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} while (blks != 0);
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debug("scsi_read_ext: end startblk " LBAF
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", blccnt %x buffer %" PRIXPTR "\n", start, smallblks, buf_addr);
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return blkcnt;
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}
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/*******************************************************************************
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* scsi_write
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*/
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/* Almost the maximum amount of the scsi_ext command.. */
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#define SCSI_MAX_WRITE_BLK 0xFFFF
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#ifdef CONFIG_BLK
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static ulong scsi_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
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const void *buffer)
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#else
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static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr,
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lbaint_t blkcnt, const void *buffer)
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#endif
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{
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#ifdef CONFIG_BLK
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struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
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#endif
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int device = block_dev->devnum;
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lbaint_t start, blks;
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uintptr_t buf_addr;
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unsigned short smallblks;
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ccb *pccb = (ccb *)&tempccb;
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device &= 0xff;
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/* Setup device */
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pccb->target = scsi_dev_desc[device].target;
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pccb->lun = scsi_dev_desc[device].lun;
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buf_addr = (unsigned long)buffer;
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start = blknr;
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blks = blkcnt;
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debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
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__func__, device, start, blks, (unsigned long)buffer);
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do {
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pccb->pdata = (unsigned char *)buf_addr;
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if (blks > SCSI_MAX_WRITE_BLK) {
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pccb->datalen = (scsi_dev_desc[device].blksz *
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SCSI_MAX_WRITE_BLK);
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smallblks = SCSI_MAX_WRITE_BLK;
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scsi_setup_write_ext(pccb, start, smallblks);
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start += SCSI_MAX_WRITE_BLK;
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blks -= SCSI_MAX_WRITE_BLK;
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} else {
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pccb->datalen = scsi_dev_desc[device].blksz * blks;
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smallblks = (unsigned short)blks;
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scsi_setup_write_ext(pccb, start, smallblks);
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start += blks;
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blks = 0;
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}
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debug("%s: startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
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__func__, start, smallblks, buf_addr);
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if (scsi_exec(pccb) != true) {
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scsi_print_error(pccb);
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blkcnt -= blks;
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break;
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}
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buf_addr += pccb->datalen;
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} while (blks != 0);
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debug("%s: end startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
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__func__, start, smallblks, buf_addr);
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return blkcnt;
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}
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int scsi_get_disk_count(void)
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{
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return scsi_max_devs;
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}
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#if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
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void scsi_init(void)
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{
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int busdevfunc = -1;
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int i;
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/*
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* Find a device from the list, this driver will support a single
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* controller.
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*/
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for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
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/* get PCI Device ID */
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#ifdef CONFIG_DM_PCI
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struct udevice *dev;
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int ret;
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ret = dm_pci_find_device(scsi_device_list[i].vendor,
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scsi_device_list[i].device, 0, &dev);
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if (!ret) {
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busdevfunc = dm_pci_get_bdf(dev);
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break;
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}
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#else
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busdevfunc = pci_find_device(scsi_device_list[i].vendor,
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scsi_device_list[i].device,
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0);
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#endif
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if (busdevfunc != -1)
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break;
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}
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if (busdevfunc == -1) {
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printf("Error: SCSI Controller(s) ");
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for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
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printf("%04X:%04X ",
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scsi_device_list[i].vendor,
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scsi_device_list[i].device);
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}
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printf("not found\n");
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return;
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}
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#ifdef DEBUG
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else {
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printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
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scsi_device_list[i].vendor,
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scsi_device_list[i].device,
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(busdevfunc >> 16) & 0xFF,
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(busdevfunc >> 11) & 0x1F,
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(busdevfunc >> 8) & 0x7);
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}
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#endif
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bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI, "ahci");
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scsi_low_level_init(busdevfunc);
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scsi_scan(1);
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bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI);
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}
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#endif
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/* copy src to dest, skipping leading and trailing blanks
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* and null terminate the string
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*/
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void scsi_ident_cpy(unsigned char *dest, unsigned char *src, unsigned int len)
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{
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int start, end;
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start = 0;
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while (start < len) {
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if (src[start] != ' ')
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break;
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start++;
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}
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end = len-1;
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while (end > start) {
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if (src[end] != ' ')
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break;
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end--;
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}
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for (; start <= end; start++)
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*dest ++= src[start];
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*dest = '\0';
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}
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/* Trim trailing blanks, and NUL-terminate string
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*/
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void scsi_trim_trail(unsigned char *str, unsigned int len)
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{
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unsigned char *p = str + len - 1;
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while (len-- > 0) {
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*p-- = '\0';
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if (*p != ' ')
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return;
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}
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}
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int scsi_read_capacity(ccb *pccb, lbaint_t *capacity, unsigned long *blksz)
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{
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*capacity = 0;
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memset(pccb->cmd, '\0', sizeof(pccb->cmd));
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pccb->cmd[0] = SCSI_RD_CAPAC10;
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pccb->cmd[1] = pccb->lun << 5;
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pccb->cmdlen = 10;
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pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
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pccb->datalen = 8;
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if (scsi_exec(pccb) != true)
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return 1;
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*capacity = ((lbaint_t)pccb->pdata[0] << 24) |
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((lbaint_t)pccb->pdata[1] << 16) |
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((lbaint_t)pccb->pdata[2] << 8) |
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((lbaint_t)pccb->pdata[3]);
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if (*capacity != 0xffffffff) {
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/* Read capacity (10) was sufficient for this drive. */
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*blksz = ((unsigned long)pccb->pdata[4] << 24) |
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((unsigned long)pccb->pdata[5] << 16) |
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((unsigned long)pccb->pdata[6] << 8) |
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((unsigned long)pccb->pdata[7]);
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return 0;
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}
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/* Read capacity (10) was insufficient. Use read capacity (16). */
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memset(pccb->cmd, '\0', sizeof(pccb->cmd));
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pccb->cmd[0] = SCSI_RD_CAPAC16;
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pccb->cmd[1] = 0x10;
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pccb->cmdlen = 16;
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pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
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pccb->datalen = 16;
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if (scsi_exec(pccb) != true)
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return 1;
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*capacity = ((uint64_t)pccb->pdata[0] << 56) |
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((uint64_t)pccb->pdata[1] << 48) |
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((uint64_t)pccb->pdata[2] << 40) |
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((uint64_t)pccb->pdata[3] << 32) |
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((uint64_t)pccb->pdata[4] << 24) |
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((uint64_t)pccb->pdata[5] << 16) |
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((uint64_t)pccb->pdata[6] << 8) |
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((uint64_t)pccb->pdata[7]);
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*blksz = ((uint64_t)pccb->pdata[8] << 56) |
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((uint64_t)pccb->pdata[9] << 48) |
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((uint64_t)pccb->pdata[10] << 40) |
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((uint64_t)pccb->pdata[11] << 32) |
|
|
((uint64_t)pccb->pdata[12] << 24) |
|
|
((uint64_t)pccb->pdata[13] << 16) |
|
|
((uint64_t)pccb->pdata[14] << 8) |
|
|
((uint64_t)pccb->pdata[15]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Some setup (fill-in) routines
|
|
*/
|
|
void scsi_setup_test_unit_ready(ccb *pccb)
|
|
{
|
|
pccb->cmd[0] = SCSI_TST_U_RDY;
|
|
pccb->cmd[1] = pccb->lun << 5;
|
|
pccb->cmd[2] = 0;
|
|
pccb->cmd[3] = 0;
|
|
pccb->cmd[4] = 0;
|
|
pccb->cmd[5] = 0;
|
|
pccb->cmdlen = 6;
|
|
pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
|
|
}
|
|
|
|
/*
|
|
* (re)-scan the scsi bus and reports scsi device info
|
|
* to the user if mode = 1
|
|
*/
|
|
void scsi_scan(int mode)
|
|
{
|
|
unsigned char i, perq, modi, lun;
|
|
lbaint_t capacity;
|
|
unsigned long blksz;
|
|
ccb *pccb = (ccb *)&tempccb;
|
|
|
|
if (mode == 1)
|
|
printf("scanning bus for devices...\n");
|
|
for (i = 0; i < CONFIG_SYS_SCSI_MAX_DEVICE; i++) {
|
|
scsi_dev_desc[i].target = 0xff;
|
|
scsi_dev_desc[i].lun = 0xff;
|
|
scsi_dev_desc[i].lba = 0;
|
|
scsi_dev_desc[i].blksz = 0;
|
|
scsi_dev_desc[i].log2blksz =
|
|
LOG2_INVALID(typeof(scsi_dev_desc[i].log2blksz));
|
|
scsi_dev_desc[i].type = DEV_TYPE_UNKNOWN;
|
|
scsi_dev_desc[i].vendor[0] = 0;
|
|
scsi_dev_desc[i].product[0] = 0;
|
|
scsi_dev_desc[i].revision[0] = 0;
|
|
scsi_dev_desc[i].removable = false;
|
|
scsi_dev_desc[i].if_type = IF_TYPE_SCSI;
|
|
scsi_dev_desc[i].devnum = i;
|
|
scsi_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
|
|
#ifndef CONFIG_BLK
|
|
scsi_dev_desc[i].block_read = scsi_read;
|
|
scsi_dev_desc[i].block_write = scsi_write;
|
|
#endif
|
|
}
|
|
scsi_max_devs = 0;
|
|
for (i = 0; i < CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) {
|
|
pccb->target = i;
|
|
for (lun = 0; lun < CONFIG_SYS_SCSI_MAX_LUN; lun++) {
|
|
pccb->lun = lun;
|
|
pccb->pdata = (unsigned char *)&tempbuff;
|
|
pccb->datalen = 512;
|
|
scsi_setup_inquiry(pccb);
|
|
if (scsi_exec(pccb) != true) {
|
|
if (pccb->contr_stat == SCSI_SEL_TIME_OUT) {
|
|
/*
|
|
* selection timeout => assuming no
|
|
* device present
|
|
*/
|
|
debug("Selection timeout ID %d\n",
|
|
pccb->target);
|
|
continue;
|
|
}
|
|
scsi_print_error(pccb);
|
|
continue;
|
|
}
|
|
perq = tempbuff[0];
|
|
modi = tempbuff[1];
|
|
if ((perq & 0x1f) == 0x1f)
|
|
continue; /* skip unknown devices */
|
|
if ((modi & 0x80) == 0x80) /* drive is removable */
|
|
scsi_dev_desc[scsi_max_devs].removable = true;
|
|
/* get info for this device */
|
|
scsi_ident_cpy((unsigned char *)&scsi_dev_desc
|
|
[scsi_max_devs].vendor[0],
|
|
&tempbuff[8], 8);
|
|
scsi_ident_cpy((unsigned char *)&scsi_dev_desc
|
|
[scsi_max_devs].product[0],
|
|
&tempbuff[16], 16);
|
|
scsi_ident_cpy((unsigned char *)&scsi_dev_desc
|
|
[scsi_max_devs].revision[0],
|
|
&tempbuff[32], 4);
|
|
scsi_dev_desc[scsi_max_devs].target = pccb->target;
|
|
scsi_dev_desc[scsi_max_devs].lun = pccb->lun;
|
|
|
|
pccb->datalen = 0;
|
|
scsi_setup_test_unit_ready(pccb);
|
|
if (scsi_exec(pccb) != true) {
|
|
if (scsi_dev_desc[scsi_max_devs].removable) {
|
|
scsi_dev_desc[scsi_max_devs].type =
|
|
perq;
|
|
goto removable;
|
|
}
|
|
scsi_print_error(pccb);
|
|
continue;
|
|
}
|
|
if (scsi_read_capacity(pccb, &capacity, &blksz)) {
|
|
scsi_print_error(pccb);
|
|
continue;
|
|
}
|
|
scsi_dev_desc[scsi_max_devs].lba = capacity;
|
|
scsi_dev_desc[scsi_max_devs].blksz = blksz;
|
|
scsi_dev_desc[scsi_max_devs].log2blksz =
|
|
LOG2(scsi_dev_desc[scsi_max_devs].blksz);
|
|
scsi_dev_desc[scsi_max_devs].type = perq;
|
|
part_init(&scsi_dev_desc[scsi_max_devs]);
|
|
removable:
|
|
if (mode == 1) {
|
|
printf(" Device %d: ", scsi_max_devs);
|
|
dev_print(&scsi_dev_desc[scsi_max_devs]);
|
|
} /* if mode */
|
|
scsi_max_devs++;
|
|
} /* next LUN */
|
|
}
|
|
if (scsi_max_devs > 0)
|
|
scsi_curr_dev = 0;
|
|
else
|
|
scsi_curr_dev = -1;
|
|
|
|
printf("Found %d device(s).\n", scsi_max_devs);
|
|
#ifndef CONFIG_SPL_BUILD
|
|
setenv_ulong("scsidevs", scsi_max_devs);
|
|
#endif
|
|
}
|
|
|
|
#ifdef CONFIG_BLK
|
|
static const struct blk_ops scsi_blk_ops = {
|
|
.read = scsi_read,
|
|
.write = scsi_write,
|
|
};
|
|
|
|
U_BOOT_DRIVER(scsi_blk) = {
|
|
.name = "scsi_blk",
|
|
.id = UCLASS_BLK,
|
|
.ops = &scsi_blk_ops,
|
|
};
|
|
#else
|
|
U_BOOT_LEGACY_BLK(scsi) = {
|
|
.if_typename = "sata",
|
|
.if_type = IF_TYPE_SCSI,
|
|
.max_devs = CONFIG_SYS_SCSI_MAX_DEVICE,
|
|
.desc = scsi_dev_desc,
|
|
};
|
|
#endif
|