[SeaBIOS] [PATCH] megasas: Add boot support for LSI MegaRAID SAS
Hannes Reinecke
hare at suse.de
Mon Nov 12 15:45:19 CET 2012
This patch adds support for LSI MegaRAID SAS controllers.
Currently only 8708EM2 is supported.
Signed-off-by: Hannes Reinecke <hare at suse.de>
Cc: Gerd Hofmann <kraxel at redhat.com>
Cc: Alexander Graf <agraf at suse.de>
Cc: Paolo Bonzini <pbonzini at redhat.com>
diff --git a/Makefile b/Makefile
index 5486f88..b0e2031 100644
--- a/Makefile
+++ b/Makefile
@@ -13,7 +13,7 @@ SRCBOTH=misc.c stacks.c pmm.c output.c util.c block.c floppy.c ata.c mouse.c \
pnpbios.c pirtable.c vgahooks.c ramdisk.c pcibios.c blockcmd.c \
usb.c usb-uhci.c usb-ohci.c usb-ehci.c usb-hid.c usb-msc.c \
virtio-ring.c virtio-pci.c virtio-blk.c virtio-scsi.c apm.c ahci.c \
- usb-uas.c lsi-scsi.c esp-scsi.c
+ usb-uas.c lsi-scsi.c esp-scsi.c megasas.c
SRC16=$(SRCBOTH) system.c disk.c font.c
SRC32FLAT=$(SRCBOTH) post.c shadow.c memmap.c coreboot.c boot.c \
acpi.c smm.c mptable.c smbios.c pciinit.c optionroms.c mtrr.c \
diff --git a/src/Kconfig b/src/Kconfig
index ee6fdb6..0b112ed 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -141,6 +141,12 @@ menu "Hardware support"
default y
help
Support boot from qemu-emulated lsi53c895a scsi storage.
+ config MEGASAS
+ depends on DRIVES
+ bool "LSI MegaRAID SAS controllers"
+ default y
+ help
+ Support boot from LSI MegaRAID SAS scsi storage.
config FLOPPY
depends on DRIVES
bool "Floppy controller"
diff --git a/src/block.c b/src/block.c
index 243428e..cfe5c33 100644
--- a/src/block.c
+++ b/src/block.c
@@ -336,6 +336,7 @@ process_op(struct disk_op_s *op)
case DTYPE_VIRTIO_SCSI:
case DTYPE_LSI_SCSI:
case DTYPE_ESP_SCSI:
+ case DTYPE_MEGASAS:
return process_scsi_op(op);
default:
op->count = 0;
diff --git a/src/blockcmd.c b/src/blockcmd.c
index 77c690f..81b191b 100644
--- a/src/blockcmd.c
+++ b/src/blockcmd.c
@@ -17,6 +17,7 @@
#include "virtio-scsi.h" // virtio_scsi_cmd_data
#include "lsi-scsi.h" // lsi_scsi_cmd_data
#include "esp-scsi.h" // esp_scsi_cmd_data
+#include "megasas.h" // megasas_cmd_data
#include "boot.h" // boot_add_hd
// Route command to low-level handler.
@@ -39,6 +40,8 @@ cdb_cmd_data(struct disk_op_s *op, void *cdbcmd, u16 blocksize)
return lsi_scsi_cmd_data(op, cdbcmd, blocksize);
case DTYPE_ESP_SCSI:
return esp_scsi_cmd_data(op, cdbcmd, blocksize);
+ case DTYPE_MEGASAS:
+ return megasas_cmd_data(op, cdbcmd, blocksize);
default:
op->count = 0;
return DISK_RET_EPARAM;
diff --git a/src/disk.h b/src/disk.h
index 3d07372..21debec 100644
--- a/src/disk.h
+++ b/src/disk.h
@@ -235,6 +235,7 @@ struct drive_s {
#define DTYPE_UAS 0x0b
#define DTYPE_LSI_SCSI 0x0c
#define DTYPE_ESP_SCSI 0x0d
+#define DTYPE_MEGASAS 0x0e
#define MAXDESCSIZE 80
diff --git a/src/megasas.c b/src/megasas.c
new file mode 100644
index 0000000..4b81334
--- /dev/null
+++ b/src/megasas.c
@@ -0,0 +1,311 @@
+// (qemu-emulated) megaraid_sas boot support.
+//
+// Copyright (C) 2012 Hannes Reinecke, SUSE Linux Products GmbH
+//
+// Authors:
+// Hannes Reinecke <hare at suse.de>
+//
+// based on virtio-scsi.c which is written by:
+// Paolo Bonzini <pbonzini at redhat.com>
+//
+// This file may be distributed under the terms of the GNU LGPLv3 license.
+
+#include "util.h" // dprintf
+#include "pci.h" // foreachpci
+#include "config.h" // CONFIG_*
+#include "biosvar.h" // GET_GLOBAL
+#include "pci_ids.h" // PCI_DEVICE_ID_VIRTIO_BLK
+#include "pci_regs.h" // PCI_VENDOR_ID
+#include "boot.h" // bootprio_find_scsi_device
+#include "blockcmd.h" // scsi_init_drive
+#include "disk.h"
+
+#define MFI_OMSG0 0x18 // Outbound message 0
+#define MFI_ODB 0x2c // Outbound doorbell
+#define MFI_IQP 0x40 // Inbound queue port
+
+#define MFI_STATE_MASK 0xf0000000
+#define MFI_STATE_READY 0xb0000000
+#define MFI_STATE_OPERATIONAL 0xc0000000
+
+/* MFI Commands */
+typedef enum {
+ MFI_CMD_INIT = 0x00,
+ MFI_CMD_LD_READ,
+ MFI_CMD_LD_WRITE,
+ MFI_CMD_LD_SCSI_IO,
+ MFI_CMD_PD_SCSI_IO,
+ MFI_CMD_DCMD,
+ MFI_CMD_ABORT,
+ MFI_CMD_SMP,
+ MFI_CMD_STP
+} mfi_cmd_t;
+
+struct megasas_cmd_frame {
+ u8 cmd; /*00h */
+ u8 sense_len; /*01h */
+ u8 cmd_status; /*02h */
+ u8 scsi_status; /*03h */
+
+ u8 target_id; /*04h */
+ u8 lun; /*05h */
+ u8 cdb_len; /*06h */
+ u8 sge_count; /*07h */
+
+ u32 context; /*08h */
+ u32 context_64; /*0Ch */
+
+ u16 flags; /*10h */
+ u16 timeout; /*12h */
+ u32 data_xfer_len; /*14h */
+
+ union {
+ struct {
+ u32 opcode; /*18h */
+ u8 mbox[12]; /*1Ch */
+ u32 sgl_addr; /*28h */
+ u32 sgl_len; /*32h */
+ u32 pad; /*34h */
+ } dcmd;
+ struct {
+ u32 sense_buf_lo; /*18h */
+ u32 sense_buf_hi; /*1Ch */
+ u8 cdb[16]; /*20h */
+ u32 sgl_addr; /*30h */
+ u32 sgl_len; /*34h */
+ } pthru;
+ struct {
+ u8 pad[22]; /*18h */
+ } gen;
+ };
+} __attribute__ ((packed));
+
+struct mfi_ld_list_s {
+ u32 count;
+ u32 reserved_0;
+ struct {
+ u8 target;
+ u8 lun;
+ u16 seq;
+ u8 state;
+ u8 reserved_1[3];
+ u64 size;
+ } lds[64];
+} __attribute__ ((packed));
+
+#define MEGASAS_POLL_TIMEOUT 60000 // 60 seconds polling timeout
+
+struct megasas_lun_s {
+ struct drive_s drive;
+ struct pci_device *pci;
+ struct megasas_cmd_frame *frame;
+ u32 iobase;
+ u8 target;
+ u8 lun;
+};
+
+static int megasas_fire_cmd(u32 ioaddr, struct megasas_cmd_frame *frame)
+{
+ u32 frame_addr = (u32)frame;
+ int frame_count = 1;
+ u8 cmd_state;
+ u64 end;
+
+ dprintf(1, "Frame 0x%x\n", frame_addr);
+ outl(frame_addr | frame_count << 1 | 1, ioaddr + MFI_IQP);
+
+ end = calc_future_tsc(MEGASAS_POLL_TIMEOUT);
+ do {
+ for (;;) {
+ cmd_state = GET_LOWFLAT(frame->cmd_status);
+ if (cmd_state != 0xff)
+ break;
+ if (check_tsc(end)) {
+ warn_timeout();
+ return -1;
+ }
+ yield();
+ }
+ } while (cmd_state == 0xff);
+
+ if (cmd_state == 0 || cmd_state == 0x2d)
+ return 0;
+ dprintf(1, "Frame 0x%x, status 0x%x\n", frame_addr, cmd_state);
+ return -1;
+}
+
+int
+megasas_cmd_data(struct disk_op_s *op, void *cdbcmd, u16 blocksize)
+{
+ struct megasas_lun_s *mlun =
+ container_of(op->drive_g, struct megasas_lun_s, drive);
+ u8 *cdb = cdbcmd;
+ struct megasas_cmd_frame *frame = GET_GLOBAL(mlun->frame);
+ int i;
+
+ if (!CONFIG_MEGASAS)
+ return DISK_RET_EBADTRACK;
+
+ memset_fl(frame, 0, sizeof(*frame));
+ SET_LOWFLAT(frame->cmd, MFI_CMD_LD_SCSI_IO);
+ SET_LOWFLAT(frame->cmd_status, 0xFF);
+ SET_LOWFLAT(frame->target_id, GET_GLOBAL(mlun->target));
+ SET_LOWFLAT(frame->lun, GET_GLOBAL(mlun->lun));
+ SET_LOWFLAT(frame->flags, 0x0001);
+ SET_LOWFLAT(frame->data_xfer_len, op->count * blocksize);
+ SET_LOWFLAT(frame->cdb_len, 16);
+
+ for (i = 0; i < 16; i++) {
+ SET_LOWFLAT(frame->pthru.cdb[i], cdb[i]);
+ }
+ dprintf(1, "pthru cmd 0x%x count %d bs %d\n",
+ cdb[0], op->count, blocksize);
+
+ if (op->count) {
+ SET_LOWFLAT(frame->pthru.sgl_addr, (u32)op->buf_fl);
+ SET_LOWFLAT(frame->pthru.sgl_len, op->count * blocksize);
+ SET_LOWFLAT(frame->sge_count, 1);
+ }
+ SET_LOWFLAT(frame->context, (u32)frame);
+
+ if (megasas_fire_cmd(GET_GLOBAL(mlun->iobase), frame) == 0)
+ return DISK_RET_SUCCESS;
+
+ dprintf(1, "pthru cmd 0x%x failed\n", cdb[0]);
+ return DISK_RET_EBADTRACK;
+}
+
+static int
+megasas_add_lun(struct pci_device *pci, u32 iobase, u8 target, u8 lun)
+{
+ struct megasas_lun_s *mlun = malloc_fseg(sizeof(*mlun));
+ char *name;
+ int prio, ret = 0;
+
+ if (!mlun) {
+ warn_noalloc();
+ return -1;
+ }
+ memset(mlun, 0, sizeof(*mlun));
+ mlun->drive.type = DTYPE_MEGASAS;
+ mlun->drive.cntl_id = pci->bdf;
+ mlun->pci = pci;
+ mlun->target = target;
+ mlun->lun = lun;
+ mlun->iobase = iobase;
+ mlun->frame = memalign_high(256, sizeof(struct megasas_cmd_frame));
+ if (!mlun->frame) {
+ warn_noalloc();
+ free(mlun);
+ return -1;
+ }
+ name = znprintf(36, "MegaRAID SAS (PCI %02x:%02x.%x) LD %d:%d",
+ pci_bdf_to_bus(pci->bdf), pci_bdf_to_dev(pci->bdf),
+ pci_bdf_to_fn(pci->bdf), target, lun);
+ prio = bootprio_find_scsi_device(pci, target, lun);
+ ret = scsi_init_drive(&mlun->drive, name, prio);
+ free(name);
+ if (ret) {
+ free(mlun->frame);
+ free(mlun);
+ ret = -1;
+ }
+
+ return ret;
+}
+
+static void megasas_scan_target(struct pci_device *pci, u32 iobase)
+{
+ struct mfi_ld_list_s ld_list;
+ struct megasas_cmd_frame *frame = memalign_high(256, sizeof(*frame));
+ int i;
+
+ memset(&ld_list, 0, sizeof(ld_list));
+ memset(frame, 0, sizeof(*frame));
+
+ frame->cmd = MFI_CMD_DCMD;
+ frame->cmd_status = 0xFF;
+ frame->sge_count = 1;
+ frame->flags = 0x0011;
+ frame->data_xfer_len = sizeof(ld_list);
+ frame->dcmd.opcode = 0x03010000;
+ frame->dcmd.sgl_addr = (u32)MAKE_FLATPTR(GET_SEG(SS), &ld_list);
+ frame->dcmd.sgl_len = sizeof(ld_list);
+ frame->context = (u32)frame;
+
+ if (megasas_fire_cmd(iobase, frame) != 0)
+ return;
+
+ dprintf(1, "%d LD found\n", ld_list.count);
+ for (i = 0; i < ld_list.count; i++) {
+ dprintf(1, "LD %d:%d state 0x%x\n",
+ ld_list.lds[i].target, ld_list.lds[i].lun,
+ ld_list.lds[i].state);
+ if (ld_list.lds[i].state != 0) {
+ megasas_add_lun(pci, iobase,
+ ld_list.lds[i].target, ld_list.lds[i].lun);
+ }
+ }
+ free(frame);
+}
+
+static int megasas_transition_to_ready(u32 ioaddr)
+{
+ u32 fw_state, i = 0;
+
+ fw_state = inl(ioaddr + MFI_OMSG0) & MFI_STATE_MASK;
+ while (i < MEGASAS_POLL_TIMEOUT) {
+ if (fw_state == MFI_STATE_OPERATIONAL)
+ outw(ioaddr + MFI_ODB, 0x07);
+ if (fw_state == MFI_STATE_READY)
+ break;
+ msleep(1);
+ fw_state = inl(ioaddr + MFI_OMSG0) & MFI_STATE_MASK;
+ i++;
+ }
+ if (fw_state == MFI_STATE_READY) {
+ dprintf(1, "MegaRAID SAS fw ready\n");
+ return 0;
+ }
+
+ dprintf(1, "ERROR: fw in state %x\n", fw_state & MFI_STATE_MASK);
+ return -1;
+}
+
+static void
+init_megasas(struct pci_device *pci)
+{
+ u16 bdf = pci->bdf;
+ u32 iobase = pci_config_readl(pci->bdf, PCI_BASE_ADDRESS_2)
+ & PCI_BASE_ADDRESS_IO_MASK;
+
+ dprintf(1, "found MegaRAID SAS 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(pci->bdf, PCI_COMMAND, 0,
+ PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
+ // reset
+ if (megasas_transition_to_ready(iobase) == 0)
+ megasas_scan_target(pci, iobase);
+
+ return;
+}
+
+void
+megasas_setup(void)
+{
+ ASSERT32FLAT();
+ if (!CONFIG_MEGASAS)
+ return;
+
+ dprintf(3, "init megasas\n");
+
+ struct pci_device *pci;
+ foreachpci(pci) {
+ if (pci->vendor != PCI_VENDOR_ID_LSI_LOGIC
+ || pci->device !=PCI_DEVICE_ID_LSI_SAS1078)
+ continue;
+ init_megasas(pci);
+ }
+}
diff --git a/src/megasas.h b/src/megasas.h
new file mode 100644
index 0000000..124042e
--- /dev/null
+++ b/src/megasas.h
@@ -0,0 +1,8 @@
+#ifndef __MEGASAS_H
+#define __MEGASAS_H
+
+struct disk_op_s;
+int megasas_cmd_data(struct disk_op_s *op, void *cdbcmd, u16 blocksize);
+void megasas_setup(void);
+
+#endif /* __MEGASAS_H */
diff --git a/src/post.c b/src/post.c
index 924b311..0133f75 100644
--- a/src/post.c
+++ b/src/post.c
@@ -29,7 +29,7 @@
#include "virtio-scsi.h" // virtio_scsi_setup
#include "lsi-scsi.h" // lsi_scsi_setup
#include "esp-scsi.h" // esp_scsi_setup
-
+#include "megasas.h" // megasas_setup
/****************************************************************
* BIOS init
@@ -198,6 +198,7 @@ init_hw(void)
virtio_scsi_setup();
lsi_scsi_setup();
esp_scsi_setup();
+ megasas_setup();
}
// Begin the boot process by invoking an int0x19 in 16bit mode.
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