summaryrefslogtreecommitdiffstats
path: root/qemu/roms/seabios/src/hw/esp-scsi.c
diff options
context:
space:
mode:
Diffstat (limited to 'qemu/roms/seabios/src/hw/esp-scsi.c')
-rw-r--r--qemu/roms/seabios/src/hw/esp-scsi.c231
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);
- }
-}