From: Don Slutz <Don.Slutz(a)Gmail.com>
Also known as Fusion MPT disk; this controller model is supported
by VirtualBox and VMware, and QEMU support patches have been
posted.
Signed-off-by: Don Slutz <Don.Slutz(a)Gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini(a)redhat.com>
---
v1->v2: add 60s timeout, requiring a different context
for each message. Move reply_msg to VARLOW and align it
to 4 bytes.
Makefile | 2 +-
src/Kconfig | 6 ++
src/block.c | 3 +
src/block.h | 1 +
src/hw/mpt-scsi.c | 313 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/hw/mpt-scsi.h | 8 ++
src/post.c | 2 +
7 files changed, 334 insertions(+), 1 deletion(-)
create mode 100644 src/hw/mpt-scsi.c
create mode 100644 src/hw/mpt-scsi.h
diff --git a/Makefile b/Makefile
index 3a0d2e8..fcbd88a 100644
--- a/Makefile
+++ b/Makefile
@@ -34,7 +34,7 @@ SRCBOTH=misc.c stacks.c output.c string.c block.c cdrom.c disk.c mouse.c kbd.c \
hw/usb.c hw/usb-uhci.c hw/usb-ohci.c hw/usb-ehci.c \
hw/usb-hid.c hw/usb-msc.c hw/usb-uas.c \
hw/blockcmd.c hw/floppy.c hw/ata.c hw/ramdisk.c \
- hw/lsi-scsi.c hw/esp-scsi.c hw/megasas.c
+ hw/lsi-scsi.c hw/esp-scsi.c hw/megasas.c hw/mpt-scsi.c
SRC16=$(SRCBOTH)
SRC32FLAT=$(SRCBOTH) post.c memmap.c malloc.c romfile.c x86.c optionroms.c \
pmm.c font.c boot.c bootsplash.c jpeg.c bmp.c tcgbios.c sha1.c \
diff --git a/src/Kconfig b/src/Kconfig
index b873cd3..8250702 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -208,6 +208,12 @@ menu "Hardware support"
default y
help
Support boot from LSI MegaRAID SAS scsi storage.
+ config MPT_SCSI
+ depends on DRIVES
+ bool "LSI MPT Fusion controllers"
+ default y
+ help
+ Support boot from LSI MPT Fusion scsi storage.
config FLOPPY
depends on DRIVES && HARDWARE_IRQ
bool "Floppy controller"
diff --git a/src/block.c b/src/block.c
index 97e05fa..ef1cd9f 100644
--- a/src/block.c
+++ b/src/block.c
@@ -13,6 +13,7 @@
#include "hw/esp-scsi.h" // esp_scsi_process_op
#include "hw/lsi-scsi.h" // lsi_scsi_process_op
#include "hw/megasas.h" // megasas_process_op
+#include "hw/mpt-scsi.h" // mpt_scsi_process_op
#include "hw/pci.h" // pci_bdf_to_bus
#include "hw/pvscsi.h" // pvscsi_process_op
#include "hw/rtc.h" // rtc_read
@@ -521,6 +522,8 @@ process_op_both(struct disk_op_s *op)
return esp_scsi_process_op(op);
case DTYPE_MEGASAS:
return megasas_process_op(op);
+ case DTYPE_MPT_SCSI:
+ return mpt_scsi_process_op(op);
default:
if (!MODESEGMENT)
return DISK_RET_EPARAM;
diff --git a/src/block.h b/src/block.h
index 2ff359f..7de6f54 100644
--- a/src/block.h
+++ b/src/block.h
@@ -80,6 +80,7 @@ struct drive_s {
#define DTYPE_ESP_SCSI 0x81
#define DTYPE_MEGASAS 0x82
#define DTYPE_PVSCSI 0x83
+#define DTYPE_MPT_SCSI 0x84
#define DTYPE_SDCARD 0x90
#define MAXDESCSIZE 80
diff --git a/src/hw/mpt-scsi.c b/src/hw/mpt-scsi.c
new file mode 100644
index 0000000..44f5446
--- /dev/null
+++ b/src/hw/mpt-scsi.c
@@ -0,0 +1,313 @@
+// MPT Fusion boot support.
+//
+// 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 "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 MPT_REG_DOORBELL 0x00
+#define MPT_REG_WRITE_SEQ 0x04
+#define MPT_REG_HOST_DIAG 0x08
+#define MPT_REG_TEST 0x0c
+#define MPT_REG_DIAG_DATA 0x10
+#define MPT_REG_DIAG_ADDR 0x14
+#define MPT_REG_ISTATUS 0x30
+#define MPT_REG_IMASK 0x34
+#define MPT_REG_REQ_Q 0x40
+#define MPT_REG_REP_Q 0x44
+
+#define MPT_DOORBELL_MSG_RESET 0x40
+#define MPT_DOORBELL_HANDSHAKE 0x42
+
+#define MPT_IMASK_DOORBELL 0x01
+#define MPT_IMASK_REPLY 0x08
+
+struct mpt_lun_s {
+ struct drive_s drive;
+ struct pci_device *pci;
+ u32 iobase;
+ u8 target;
+ u8 lun;
+};
+
+u8 reply_msg[4] __attribute((aligned(4))) VARLOW;
+
+#define MPT_MESSAGE_HDR_FUNCTION_SCSI_IO_REQUEST (0x00)
+#define MPT_MESSAGE_HDR_FUNCTION_IOC_INIT (0x02)
+
+static struct MptIOCInitRequest
+{
+ u8 WhoInit; /* Which system sent this init request. */
+ u8 Reserved1; /* Reserved */
+ u8 ChainOffset; /* Chain offset in the SG list. */
+ u8 Function; /* Function to execute. */
+ u8 Flags; /* Flags */
+ u8 MaxDevices; /* Max devices the driver can handle. */
+ u8 MaxBuses; /* Max buses the driver can handle. */
+ u8 MessageFlags; /* Message flags. */
+ u32 MessageContext; /* Message context ID. */
+ u16 ReplyFrameSize; /* Reply frame size. */
+ u16 Reserved2; /* Reserved */
+ u32 HostMfaHighAddr; /* Upper 32bit of the message frames. */
+ u32 SenseBufferHighAddr; /* Upper 32bit of the sense buffer. */
+} MptIOCInitRequest = {
+ .WhoInit = 2,
+ .Function = MPT_MESSAGE_HDR_FUNCTION_IOC_INIT,
+ .MaxDevices = 8,
+ .MaxBuses = 1,
+ .ReplyFrameSize = sizeof(reply_msg),
+ .HostMfaHighAddr = 0,
+ .SenseBufferHighAddr = 0
+};
+
+struct MptIOCInitReply {
+ u8 WhoInit; /* Which subsystem sent this init request. */
+ u8 Reserved1; /* Reserved */
+ u8 MessageLength; /* Message length */
+ u8 Function; /* Function. */
+ u8 Flags; /* Flags */
+ u8 MaxDevices; /* Maximum number of devices the driver can handle. */
+ u8 MaxBuses; /* Maximum number of busses the driver can handle. */
+ u8 MessageFlags; /* Message flags. */
+ u32 MessageContext; /* Message context ID */
+ u16 Reserved2; /* Reserved */
+ u16 IOCStatus; /* IO controller status. */
+ u32 IOCLogInfo; /* IO controller log information. */
+};
+
+typedef struct MptSCSIIORequest {
+ u8 TargetID; /* Target ID */
+ u8 Bus; /* Bus number */
+ u8 ChainOffset; /* Chain offset */
+ u8 Function; /* Function number. */
+ u8 CDBLength; /* CDB length. */
+ u8 SenseBufferLength; /* Sense buffer length. */
+ u8 Reserved; /* Reserved */
+ u8 MessageFlags; /* Message flags. */
+ u32 MessageContext; /* Message context ID. */
+ u8 LUN[8]; /* LUN */
+ u32 Control; /* Control values. */
+ u8 CDB[16]; /* The CDB. */
+ u32 DataLength; /* Data length. */
+ u32 SenseBufferLowAddr; /* Sense buffer low 32bit address. */
+} __attribute__((packed)) MptSCSIIORequest_t;
+
+#define MPT_POLL_TIMEOUT 60000
+
+typedef struct MptSGEntrySimple32 {
+ u32 FlagsLength;
+ u32 DataBufferAddressLow;
+} __attribute__((packed)) MptSGEntrySimple32_t;
+
+static int
+mpt_scsi_cmd(u32 iobase, struct disk_op_s *op,
+ u8 *cdb, u16 target, u16 lun, u16 blocksize)
+{
+ if (lun != 0)
+ return DISK_RET_ENOTREADY;
+
+ u32 end = timer_calc(MPT_POLL_TIMEOUT);
+
+ u8 sense_buf[18];
+ struct scsi_req {
+ MptSCSIIORequest_t scsi_io;
+ MptSGEntrySimple32_t sge;
+ } __attribute__((packed, aligned(4))) req = {
+ .scsi_io = {
+ .TargetID = target,
+ .Bus = 0,
+ .Function = MPT_MESSAGE_HDR_FUNCTION_SCSI_IO_REQUEST,
+ .CDBLength = 16,
+ .SenseBufferLength = 18,
+ .MessageContext = end & 0x7fffffff,
+ .DataLength = op->count * blocksize,
+ .SenseBufferLowAddr = (u32)MAKE_FLATPTR(GET_SEG(SS), &sense_buf[0]),
+ },
+ .sge = {
+ /* end of list, simple entry, end of buffer, last element */
+ .FlagsLength = (op->count * blocksize) | 0xD1000000,
+ .DataBufferAddressLow = (u32)op->buf_fl,
+ }
+ };
+
+ req.scsi_io.LUN[1] = lun;
+ memcpy(req.scsi_io.CDB, cdb, 16);
+ if (blocksize) {
+ if (scsi_is_read(op)) {
+ req.scsi_io.Control = 2 << 24;
+ } else {
+ req.scsi_io.Control = 1 << 24;
+ req.sge.FlagsLength |= 0x04000000;
+ }
+ }
+
+ outl((u32)MAKE_FLATPTR(GET_SEG(SS), &req), iobase + MPT_REG_REQ_Q);
+
+ for (;;) {
+ if (timer_check(end)) {
+ return DISK_RET_ETIMEOUT;
+ }
+
+ u32 istatus = inl(iobase + MPT_REG_ISTATUS);
+ if (istatus & MPT_IMASK_REPLY) {
+ u32 resp = inl(iobase + MPT_REG_REP_Q);
+ /* another read to turn interrupt off */
+ inl(iobase + MPT_REG_REP_Q);
+ if (resp == req.scsi_io.MessageContext) {
+ return DISK_RET_SUCCESS;
+ } else if (resp & 0x80000000) {
+ outl((u32)&reply_msg[0], iobase + MPT_REG_REP_Q);
+ return DISK_RET_EBADTRACK;
+ }
+ }
+ usleep(50);
+ }
+}
+
+int
+mpt_scsi_process_op(struct disk_op_s *op)
+{
+ if (!CONFIG_MPT_SCSI)
+ return DISK_RET_EBADTRACK;
+
+ u8 cdbcmd[16];
+ int blocksize = scsi_fill_cmd(op, cdbcmd, sizeof(cdbcmd));
+ if (blocksize < 0)
+ return default_process_op(op);
+
+ struct mpt_lun_s *llun_gf =
+ container_of(op->drive_gf, struct mpt_lun_s, drive);
+ u16 target = GET_GLOBALFLAT(llun_gf->target);
+ u16 lun = GET_GLOBALFLAT(llun_gf->lun);
+ u32 iobase = GET_GLOBALFLAT(llun_gf->iobase);
+ return mpt_scsi_cmd(iobase, op, cdbcmd, target, lun, blocksize);
+}
+
+static int
+mpt_scsi_add_lun(struct pci_device *pci, u32 iobase, u8 target, u8 lun)
+{
+ struct mpt_lun_s *llun = malloc_fseg(sizeof(*llun));
+ if (!llun) {
+ warn_noalloc();
+ return -1;
+ }
+ memset(llun, 0, sizeof(*llun));
+ llun->drive.type = DTYPE_MPT_SCSI;
+ llun->drive.cntl_id = pci->bdf;
+ llun->pci = pci;
+ llun->target = target;
+ llun->lun = lun;
+ llun->iobase = iobase;
+
+ char *name = znprintf(16, "mpt %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
+mpt_scsi_scan_target(struct pci_device *pci, u32 iobase, u8 target)
+{
+ /* TODO: send REPORT LUNS. For now, only LUN 0 is recognized. */
+ mpt_scsi_add_lun(pci, iobase, target, 0);
+}
+
+static inline void
+mpt_out_doorbell(u8 func, u8 arg, u16 iobase)
+{
+ outl((func << 24) | (arg << 16), iobase + MPT_REG_DOORBELL);
+}
+
+static void
+init_mpt_scsi(struct pci_device *pci, const char *dev_name)
+{
+ u16 *msg_in_p;
+ u16 bdf = pci->bdf;
+ u32 iobase = pci_config_readl(pci->bdf, PCI_BASE_ADDRESS_0)
+ & PCI_BASE_ADDRESS_IO_MASK;
+ struct MptIOCInitReply MptIOCInitReply;
+
+ pci_config_maskw(bdf, PCI_COMMAND, 0,
+ PCI_COMMAND_IO | PCI_COMMAND_MASTER);
+
+ dprintf(1, "found %s at %02x:%02x.%x, io @ %x\n", dev_name,
+ pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf),
+ pci_bdf_to_fn(bdf), iobase);
+
+ // reset
+ mpt_out_doorbell(MPT_DOORBELL_MSG_RESET, 0, iobase);
+ outl(MPT_IMASK_DOORBELL|MPT_IMASK_REPLY , iobase + MPT_REG_IMASK);
+ outl(0, iobase + MPT_REG_ISTATUS);
+
+ // send IOC Init message through the doorbell
+ mpt_out_doorbell(MPT_DOORBELL_HANDSHAKE,
+ sizeof(MptIOCInitRequest)/sizeof(u32),
+ iobase);
+
+ outsl(iobase + MPT_REG_DOORBELL,
+ (u32 *)&MptIOCInitRequest,
+ sizeof(MptIOCInitRequest)/sizeof(u32));
+
+ // Read the reply 16 bits at a time. Cannot use insl
+ // because the port is 32 bits wide.
+ msg_in_p = (u16 *)&MptIOCInitReply;
+ while(msg_in_p != (u16 *)(&MptIOCInitReply + 1))
+ *msg_in_p++ = (u16)inl(iobase + MPT_REG_DOORBELL);
+
+ // Eat doorbell interrupt
+ outl(0, iobase + MPT_REG_ISTATUS);
+
+ // Post reply message used for SCSI errors
+ outl((u32)&reply_msg[0], iobase + MPT_REG_REP_Q);
+
+ for (int i = 0; i < 7; i++)
+ mpt_scsi_scan_target(pci, iobase, i);
+
+ return;
+}
+
+void
+mpt_scsi_setup(void)
+{
+ ASSERT32FLAT();
+ if (!CONFIG_MPT_SCSI) {
+ return;
+ }
+
+ dprintf(3, "init MPT\n");
+
+ struct pci_device *pci;
+ foreachpci(pci) {
+ if (pci->vendor == PCI_VENDOR_ID_LSI_LOGIC) {
+ if (pci->device == PCI_DEVICE_ID_LSI_53C1030) {
+ init_mpt_scsi(pci, "lsi53c1030");
+ }
+ if (pci->device == PCI_DEVICE_ID_LSI_SAS1068) {
+ init_mpt_scsi(pci, "sas1068");
+ }
+ if (pci->device == PCI_DEVICE_ID_LSI_SAS1068E) {
+ init_mpt_scsi(pci, "sas1068e");
+ }
+ }
+ }
+}
diff --git a/src/hw/mpt-scsi.h b/src/hw/mpt-scsi.h
new file mode 100644
index 0000000..6535dd8
--- /dev/null
+++ b/src/hw/mpt-scsi.h
@@ -0,0 +1,8 @@
+#ifndef __MPT_SCSI_H
+#define __MPT_SCSI_H
+
+struct disk_op_s;
+int mpt_scsi_process_op(struct disk_op_s *op);
+void mpt_scsi_setup(void);
+
+#endif /* __MPT_SCSI_H */
diff --git a/src/post.c b/src/post.c
index 6803585..1dd075e 100644
--- a/src/post.c
+++ b/src/post.c
@@ -14,6 +14,7 @@
#include "hw/ata.h" // ata_setup
#include "hw/esp-scsi.h" // esp_scsi_setup
#include "hw/lsi-scsi.h" // lsi_scsi_setup
+#include "hw/mpt-scsi.h" // lsi_scsi_setup
#include "hw/megasas.h" // megasas_setup
#include "hw/pvscsi.h" // pvscsi_setup
#include "hw/pic.h" // pic_setup
@@ -153,6 +154,7 @@ device_hardware_setup(void)
esp_scsi_setup();
megasas_setup();
pvscsi_setup();
+ mpt_scsi_setup();
}
static void
--
2.5.0
