1 // (qemu-emulated) lsi53c895a boot support.
3 // Copyright (C) 2012 Red Hat Inc.
6 // Gerd Hoffmann <kraxel@redhat.com>
8 // based on virtio-scsi.c which is written by:
9 // Paolo Bonzini <pbonzini@redhat.com>
11 // This file may be distributed under the terms of the GNU LGPLv3 license.
13 #include "biosvar.h" // GET_GLOBALFLAT
14 #include "block.h" // struct drive_s
15 #include "blockcmd.h" // scsi_drive_setup
16 #include "config.h" // CONFIG_*
17 #include "fw/paravirt.h" // runningOnQEMU
18 #include "malloc.h" // free
19 #include "output.h" // dprintf
20 #include "pci.h" // foreachpci
21 #include "pci_ids.h" // PCI_DEVICE_ID_VIRTIO_BLK
22 #include "pci_regs.h" // PCI_VENDOR_ID
23 #include "std/disk.h" // DISK_RET_SUCCESS
24 #include "string.h" // memset
25 #include "util.h" // usleep
27 #define LSI_REG_DSTAT 0x0c
28 #define LSI_REG_ISTAT0 0x14
29 #define LSI_REG_DSP0 0x2c
30 #define LSI_REG_DSP1 0x2d
31 #define LSI_REG_DSP2 0x2e
32 #define LSI_REG_DSP3 0x2f
33 #define LSI_REG_SIST0 0x42
34 #define LSI_REG_SIST1 0x43
36 #define LSI_ISTAT0_DIP 0x01
37 #define LSI_ISTAT0_SIP 0x02
38 #define LSI_ISTAT0_INTF 0x04
39 #define LSI_ISTAT0_CON 0x08
40 #define LSI_ISTAT0_SEM 0x10
41 #define LSI_ISTAT0_SIGP 0x20
42 #define LSI_ISTAT0_SRST 0x40
43 #define LSI_ISTAT0_ABRT 0x80
47 struct pci_device *pci;
54 lsi_scsi_cmd(struct lsi_lun_s *llun_gf, struct disk_op_s *op,
55 void *cdbcmd, u16 target, u16 lun, u16 blocksize)
57 u32 iobase = GET_GLOBALFLAT(llun_gf->iobase);
58 u32 dma = ((cdb_is_read(cdbcmd, blocksize) ? 0x01000000 : 0x00000000) |
59 (op->count * blocksize));
61 0x80 | lun, // select lun
69 /* select target, send scsi command */
70 0x40000000 | target << 16, // select target
73 (u32)MAKE_FLATPTR(GET_SEG(SS), &msgout),
74 0x02000010, // scsi command
75 (u32)MAKE_FLATPTR(GET_SEG(SS), cdbcmd),
77 /* handle disconnect */
78 0x87820000, // phase == msgin ?
81 (u32)MAKE_FLATPTR(GET_SEG(SS), &msgin_tmp),
82 0x50000000, // re-select
85 (u32)MAKE_FLATPTR(GET_SEG(SS), &msgin_tmp),
87 /* dma data, get status, raise irq */
91 (u32)MAKE_FLATPTR(GET_SEG(SS), &status),
93 (u32)MAKE_FLATPTR(GET_SEG(SS), &msgin),
94 0x98080000, // dma irq
97 u32 dsp = (u32)MAKE_FLATPTR(GET_SEG(SS), &script);
99 outb(dsp & 0xff, iobase + LSI_REG_DSP0);
100 outb((dsp >> 8) & 0xff, iobase + LSI_REG_DSP1);
101 outb((dsp >> 16) & 0xff, iobase + LSI_REG_DSP2);
102 outb((dsp >> 24) & 0xff, iobase + LSI_REG_DSP3);
105 u8 dstat = inb(iobase + LSI_REG_DSTAT);
106 u8 sist0 = inb(iobase + LSI_REG_SIST0);
107 u8 sist1 = inb(iobase + LSI_REG_SIST1);
108 if (sist0 || sist1) {
117 if (msgin == 0 && status == 0) {
118 return DISK_RET_SUCCESS;
122 return DISK_RET_EBADTRACK;
126 lsi_scsi_cmd_data(struct disk_op_s *op, void *cdbcmd, u16 blocksize)
128 if (!CONFIG_LSI_SCSI)
129 return DISK_RET_EBADTRACK;
131 struct lsi_lun_s *llun_gf =
132 container_of(op->drive_gf, struct lsi_lun_s, drive);
134 return lsi_scsi_cmd(llun_gf, op, cdbcmd,
135 GET_GLOBALFLAT(llun_gf->target),
136 GET_GLOBALFLAT(llun_gf->lun),
141 lsi_scsi_add_lun(struct pci_device *pci, u32 iobase, u8 target, u8 lun)
143 struct lsi_lun_s *llun = malloc_fseg(sizeof(*llun));
148 memset(llun, 0, sizeof(*llun));
149 llun->drive.type = DTYPE_LSI_SCSI;
150 llun->drive.cntl_id = pci->bdf;
152 llun->target = target;
154 llun->iobase = iobase;
156 char *name = znprintf(16, "lsi %02x:%02x.%x %d:%d",
157 pci_bdf_to_bus(pci->bdf), pci_bdf_to_dev(pci->bdf),
158 pci_bdf_to_fn(pci->bdf), target, lun);
159 int prio = bootprio_find_scsi_device(pci, target, lun);
160 int ret = scsi_drive_setup(&llun->drive, name, prio);
172 lsi_scsi_scan_target(struct pci_device *pci, u32 iobase, u8 target)
174 /* TODO: send REPORT LUNS. For now, only LUN 0 is recognized. */
175 lsi_scsi_add_lun(pci, iobase, target, 0);
179 init_lsi_scsi(struct pci_device *pci)
182 u32 iobase = pci_config_readl(pci->bdf, PCI_BASE_ADDRESS_0)
183 & PCI_BASE_ADDRESS_IO_MASK;
185 pci_config_maskw(bdf, PCI_COMMAND, 0, PCI_COMMAND_MASTER);
187 dprintf(1, "found lsi53c895a at %02x:%02x.%x, io @ %x\n",
188 pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf),
189 pci_bdf_to_fn(bdf), iobase);
192 outb(LSI_ISTAT0_SRST, iobase + LSI_REG_ISTAT0);
195 for (i = 0; i < 7; i++)
196 lsi_scsi_scan_target(pci, iobase, i);
205 if (!CONFIG_LSI_SCSI || !runningOnQEMU())
208 dprintf(3, "init lsi53c895a\n");
210 struct pci_device *pci;
212 if (pci->vendor != PCI_VENDOR_ID_LSI_LOGIC
213 || pci->device != PCI_DEVICE_ID_LSI_53C895A)