diff options
Diffstat (limited to 'qemu/roms/seabios/src/hw/esp-scsi.c')
-rw-r--r-- | qemu/roms/seabios/src/hw/esp-scsi.c | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/qemu/roms/seabios/src/hw/esp-scsi.c b/qemu/roms/seabios/src/hw/esp-scsi.c deleted file mode 100644 index d4e47e3c5..000000000 --- a/qemu/roms/seabios/src/hw/esp-scsi.c +++ /dev/null @@ -1,231 +0,0 @@ -// AMD PCscsi boot support. -// -// Copyright (C) 2012 Red Hat Inc. -// -// Authors: -// Paolo Bonzini <pbonzini@redhat.com> -// -// based on lsi-scsi.c which is written by: -// Gerd Hoffman <kraxel@redhat.com> -// -// This file may be distributed under the terms of the GNU LGPLv3 license. - -#include "biosvar.h" // GET_GLOBALFLAT -#include "block.h" // struct drive_s -#include "blockcmd.h" // scsi_drive_setup -#include "config.h" // CONFIG_* -#include "fw/paravirt.h" // runningOnQEMU -#include "malloc.h" // free -#include "output.h" // dprintf -#include "pci.h" // foreachpci -#include "pci_ids.h" // PCI_DEVICE_ID -#include "pci_regs.h" // PCI_VENDOR_ID -#include "std/disk.h" // DISK_RET_SUCCESS -#include "string.h" // memset -#include "util.h" // usleep - -#define ESP_TCLO 0x00 -#define ESP_TCMID 0x04 -#define ESP_FIFO 0x08 -#define ESP_CMD 0x0c -#define ESP_WBUSID 0x10 -#define ESP_TCHI 0x38 - -#define ESP_RSTAT 0x10 -#define ESP_RINTR 0x14 -#define ESP_RFLAGS 0x1c - -#define ESP_DMA_CMD 0x40 -#define ESP_DMA_STC 0x44 -#define ESP_DMA_SPA 0x48 -#define ESP_DMA_WBC 0x4c -#define ESP_DMA_WAC 0x50 -#define ESP_DMA_STAT 0x54 -#define ESP_DMA_SMDLA 0x58 -#define ESP_DMA_WMAC 0x58c - -#define ESP_CMD_DMA 0x80 -#define ESP_CMD_RESET 0x02 -#define ESP_CMD_TI 0x10 -#define ESP_CMD_ICCS 0x11 -#define ESP_CMD_SELATN 0x42 - -#define ESP_STAT_DI 0x01 -#define ESP_STAT_CD 0x02 -#define ESP_STAT_MSG 0x04 -#define ESP_STAT_TC 0x10 - -#define ESP_INTR_DC 0x20 - -struct esp_lun_s { - struct drive_s drive; - struct pci_device *pci; - u32 iobase; - u8 target; - u8 lun; -}; - -static void -esp_scsi_dma(u32 iobase, u32 buf, u32 len, int read) -{ - outb(len & 0xff, iobase + ESP_TCLO); - outb((len >> 8) & 0xff, iobase + ESP_TCMID); - outb((len >> 16) & 0xff, iobase + ESP_TCHI); - outl(buf, iobase + ESP_DMA_SPA); - outl(len, iobase + ESP_DMA_STC); - outb(read ? 0x83 : 0x03, iobase + ESP_DMA_CMD); -} - -int -esp_scsi_process_op(struct disk_op_s *op) -{ - if (!CONFIG_ESP_SCSI) - return DISK_RET_EBADTRACK; - struct esp_lun_s *llun_gf = - container_of(op->drive_gf, struct esp_lun_s, drive); - u16 target = GET_GLOBALFLAT(llun_gf->target); - u16 lun = GET_GLOBALFLAT(llun_gf->lun); - u8 cdbcmd[16]; - int blocksize = scsi_fill_cmd(op, cdbcmd, sizeof(cdbcmd)); - if (blocksize < 0) - return default_process_op(op); - u32 iobase = GET_GLOBALFLAT(llun_gf->iobase); - int i, state; - u8 status; - - outb(target, iobase + ESP_WBUSID); - - /* - * We need to pass the LUN at the beginning of the command, and the FIFO - * is only 16 bytes, so we cannot support 16-byte CDBs. The alternative - * would be to use DMA for the 17-byte command too, which is quite - * overkill. - */ - outb(lun, iobase + ESP_FIFO); - cdbcmd[1] &= 0x1f; - cdbcmd[1] |= lun << 5; - for (i = 0; i < 12; i++) - outb(cdbcmd[i], iobase + ESP_FIFO); - outb(ESP_CMD_SELATN, iobase + ESP_CMD); - - for (state = 0;;) { - u8 stat = inb(iobase + ESP_RSTAT); - - /* Detect disconnected device. */ - if (state == 0 && (inb(iobase + ESP_RINTR) & ESP_INTR_DC)) { - return DISK_RET_ENOTREADY; - } - - /* HBA reads command, clears CD, sets TC -> do DMA if needed. */ - if (state == 0 && (stat & ESP_STAT_TC)) { - state++; - if (op->count && blocksize) { - /* Data phase. */ - u32 count = (u32)op->count * blocksize; - esp_scsi_dma(iobase, (u32)op->buf_fl, count, scsi_is_read(op)); - outb(ESP_CMD_TI | ESP_CMD_DMA, iobase + ESP_CMD); - continue; - } - } - - /* At end of DMA TC is set again -> complete command. */ - if (state == 1 && (stat & ESP_STAT_TC)) { - state++; - outb(ESP_CMD_ICCS, iobase + ESP_CMD); - continue; - } - - /* Finally read data from the message in phase. */ - if (state == 2 && (stat & ESP_STAT_MSG)) { - state++; - status = inb(iobase + ESP_FIFO); - inb(iobase + ESP_FIFO); - break; - } - usleep(5); - } - - if (status == 0) { - return DISK_RET_SUCCESS; - } - - return DISK_RET_EBADTRACK; -} - -static int -esp_scsi_add_lun(struct pci_device *pci, u32 iobase, u8 target, u8 lun) -{ - struct esp_lun_s *llun = malloc_fseg(sizeof(*llun)); - if (!llun) { - warn_noalloc(); - return -1; - } - memset(llun, 0, sizeof(*llun)); - llun->drive.type = DTYPE_ESP_SCSI; - llun->drive.cntl_id = pci->bdf; - llun->pci = pci; - llun->target = target; - llun->lun = lun; - llun->iobase = iobase; - - char *name = znprintf(16, "esp %02x:%02x.%x %d:%d", - pci_bdf_to_bus(pci->bdf), pci_bdf_to_dev(pci->bdf), - pci_bdf_to_fn(pci->bdf), target, lun); - int prio = bootprio_find_scsi_device(pci, target, lun); - int ret = scsi_drive_setup(&llun->drive, name, prio); - free(name); - if (ret) - goto fail; - return 0; - -fail: - free(llun); - return -1; -} - -static void -esp_scsi_scan_target(struct pci_device *pci, u32 iobase, u8 target) -{ - esp_scsi_add_lun(pci, iobase, target, 0); -} - -static void -init_esp_scsi(struct pci_device *pci) -{ - u16 bdf = pci->bdf; - u32 iobase = pci_config_readl(pci->bdf, PCI_BASE_ADDRESS_0) - & PCI_BASE_ADDRESS_IO_MASK; - - dprintf(1, "found esp at %02x:%02x.%x, io @ %x\n", - pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf), - pci_bdf_to_fn(bdf), iobase); - - pci_config_maskw(bdf, PCI_COMMAND, 0, PCI_COMMAND_MASTER); - - // reset - outb(ESP_CMD_RESET, iobase + ESP_CMD); - - int i; - for (i = 0; i <= 7; i++) - esp_scsi_scan_target(pci, iobase, i); - - return; -} - -void -esp_scsi_setup(void) -{ - ASSERT32FLAT(); - if (!CONFIG_ESP_SCSI || !runningOnQEMU()) - return; - - dprintf(3, "init esp\n"); - - struct pci_device *pci; - foreachpci(pci) { - if (pci->vendor != PCI_VENDOR_ID_AMD - || pci->device != PCI_DEVICE_ID_AMD_SCSI) - continue; - init_esp_scsi(pci); - } -} |