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qemu-e2k/hw/scsi/mptsas.c
Alexander Bulekov f63192b054 hw: replace most qemu_bh_new calls with qemu_bh_new_guarded 
This protects devices from bh->mmio reentrancy issues.

Thanks: Thomas Huth <thuth@redhat.com> for diagnosing OS X test failure.
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230427211013.2994127-5-alxndr@bu.edu>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-04-28 11:31:54 +02:00

1457 lines
45 KiB
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/*
* QEMU LSI SAS1068 Host Bus Adapter emulation
* Based on the QEMU Megaraid emulator
*
* Copyright (c) 2009-2012 Hannes Reinecke, SUSE Labs
* Copyright (c) 2012 Verizon, Inc.
* Copyright (c) 2016 Red Hat, Inc.
*
* Authors: Don Slutz, Paolo Bonzini
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "hw/pci/pci.h"
#include "hw/qdev-properties.h"
#include "sysemu/dma.h"
#include "hw/pci/msi.h"
#include "qemu/iov.h"
#include "qemu/main-loop.h"
#include "qemu/module.h"
#include "hw/scsi/scsi.h"
#include "scsi/constants.h"
#include "trace.h"
#include "qapi/error.h"
#include "mptsas.h"
#include "migration/qemu-file-types.h"
#include "migration/vmstate.h"
#include "mpi.h"
#define NAA_LOCALLY_ASSIGNED_ID 0x3ULL
#define IEEE_COMPANY_LOCALLY_ASSIGNED 0x525400
#define MPTSAS1068_PRODUCT_ID \
(MPI_FW_HEADER_PID_FAMILY_1068_SAS | \
MPI_FW_HEADER_PID_PROD_INITIATOR_SCSI | \
MPI_FW_HEADER_PID_TYPE_SAS)
struct MPTSASRequest {
MPIMsgSCSIIORequest scsi_io;
SCSIRequest *sreq;
QEMUSGList qsg;
MPTSASState *dev;
QTAILQ_ENTRY(MPTSASRequest) next;
};
static void mptsas_update_interrupt(MPTSASState *s)
{
PCIDevice *pci = (PCIDevice *) s;
uint32_t state = s->intr_status & ~(s->intr_mask | MPI_HIS_IOP_DOORBELL_STATUS);
if (msi_enabled(pci)) {
if (state) {
trace_mptsas_irq_msi(s);
msi_notify(pci, 0);
}
}
trace_mptsas_irq_intx(s, !!state);
pci_set_irq(pci, !!state);
}
static void mptsas_set_fault(MPTSASState *s, uint32_t code)
{
if ((s->state & MPI_IOC_STATE_FAULT) == 0) {
s->state = MPI_IOC_STATE_FAULT | code;
}
}
#define MPTSAS_FIFO_INVALID(s, name) \
((s)->name##_head > ARRAY_SIZE((s)->name) || \
(s)->name##_tail > ARRAY_SIZE((s)->name))
#define MPTSAS_FIFO_EMPTY(s, name) \
((s)->name##_head == (s)->name##_tail)
#define MPTSAS_FIFO_FULL(s, name) \
((s)->name##_head == ((s)->name##_tail + 1) % ARRAY_SIZE((s)->name))
#define MPTSAS_FIFO_GET(s, name) ({ \
uint32_t _val = (s)->name[(s)->name##_head++]; \
(s)->name##_head %= ARRAY_SIZE((s)->name); \
_val; \
})
#define MPTSAS_FIFO_PUT(s, name, val) do { \
(s)->name[(s)->name##_tail++] = (val); \
(s)->name##_tail %= ARRAY_SIZE((s)->name); \
} while(0)
static void mptsas_post_reply(MPTSASState *s, MPIDefaultReply *reply)
{
PCIDevice *pci = (PCIDevice *) s;
uint32_t addr_lo;
if (MPTSAS_FIFO_EMPTY(s, reply_free) || MPTSAS_FIFO_FULL(s, reply_post)) {
mptsas_set_fault(s, MPI_IOCSTATUS_INSUFFICIENT_RESOURCES);
return;
}
addr_lo = MPTSAS_FIFO_GET(s, reply_free);
pci_dma_write(pci, addr_lo | s->host_mfa_high_addr, reply,
MIN(s->reply_frame_size, 4 * reply->MsgLength));
MPTSAS_FIFO_PUT(s, reply_post, MPI_ADDRESS_REPLY_A_BIT | (addr_lo >> 1));
s->intr_status |= MPI_HIS_REPLY_MESSAGE_INTERRUPT;
if (s->doorbell_state == DOORBELL_WRITE) {
s->doorbell_state = DOORBELL_NONE;
s->intr_status |= MPI_HIS_DOORBELL_INTERRUPT;
}
mptsas_update_interrupt(s);
}
void mptsas_reply(MPTSASState *s, MPIDefaultReply *reply)
{
if (s->doorbell_state == DOORBELL_WRITE) {
/* The reply is sent out in 16 bit chunks, while the size
* in the reply is in 32 bit units.
*/
s->doorbell_state = DOORBELL_READ;
s->doorbell_reply_idx = 0;
s->doorbell_reply_size = reply->MsgLength * 2;
memcpy(s->doorbell_reply, reply, s->doorbell_reply_size * 2);
s->intr_status |= MPI_HIS_DOORBELL_INTERRUPT;
mptsas_update_interrupt(s);
} else {
mptsas_post_reply(s, reply);
}
}
static void mptsas_turbo_reply(MPTSASState *s, uint32_t msgctx)
{
if (MPTSAS_FIFO_FULL(s, reply_post)) {
mptsas_set_fault(s, MPI_IOCSTATUS_INSUFFICIENT_RESOURCES);
return;
}
/* The reply is just the message context ID (bit 31 = clear). */
MPTSAS_FIFO_PUT(s, reply_post, msgctx);
s->intr_status |= MPI_HIS_REPLY_MESSAGE_INTERRUPT;
mptsas_update_interrupt(s);
}
#define MPTSAS_MAX_REQUEST_SIZE 52
static const int mpi_request_sizes[] = {
[MPI_FUNCTION_SCSI_IO_REQUEST] = sizeof(MPIMsgSCSIIORequest),
[MPI_FUNCTION_SCSI_TASK_MGMT] = sizeof(MPIMsgSCSITaskMgmt),
[MPI_FUNCTION_IOC_INIT] = sizeof(MPIMsgIOCInit),
[MPI_FUNCTION_IOC_FACTS] = sizeof(MPIMsgIOCFacts),
[MPI_FUNCTION_CONFIG] = sizeof(MPIMsgConfig),
[MPI_FUNCTION_PORT_FACTS] = sizeof(MPIMsgPortFacts),
[MPI_FUNCTION_PORT_ENABLE] = sizeof(MPIMsgPortEnable),
[MPI_FUNCTION_EVENT_NOTIFICATION] = sizeof(MPIMsgEventNotify),
};
static dma_addr_t mptsas_ld_sg_base(MPTSASState *s, uint32_t flags_and_length,
dma_addr_t *sgaddr)
{
const MemTxAttrs attrs = MEMTXATTRS_UNSPECIFIED;
PCIDevice *pci = (PCIDevice *) s;
dma_addr_t addr;
if (flags_and_length & MPI_SGE_FLAGS_64_BIT_ADDRESSING) {
uint64_t addr64;
ldq_le_pci_dma(pci, *sgaddr + 4, &addr64, attrs);
addr = addr64;
*sgaddr += 12;
} else {
uint32_t addr32;
ldl_le_pci_dma(pci, *sgaddr + 4, &addr32, attrs);
addr = addr32;
*sgaddr += 8;
}
return addr;
}
static int mptsas_build_sgl(MPTSASState *s, MPTSASRequest *req, hwaddr addr)
{
PCIDevice *pci = (PCIDevice *) s;
hwaddr next_chain_addr;
uint32_t left;
hwaddr sgaddr;
uint32_t chain_offset;
chain_offset = req->scsi_io.ChainOffset;
next_chain_addr = addr + chain_offset * sizeof(uint32_t);
sgaddr = addr + sizeof(MPIMsgSCSIIORequest);
pci_dma_sglist_init(&req->qsg, pci, 4);
left = req->scsi_io.DataLength;
for(;;) {
dma_addr_t addr, len;
uint32_t flags_and_length;
ldl_le_pci_dma(pci, sgaddr, &flags_and_length, MEMTXATTRS_UNSPECIFIED);
len = flags_and_length & MPI_SGE_LENGTH_MASK;
if ((flags_and_length & MPI_SGE_FLAGS_ELEMENT_TYPE_MASK)
!= MPI_SGE_FLAGS_SIMPLE_ELEMENT ||
(!len &&
!(flags_and_length & MPI_SGE_FLAGS_END_OF_LIST) &&
!(flags_and_length & MPI_SGE_FLAGS_END_OF_BUFFER))) {
return MPI_IOCSTATUS_INVALID_SGL;
}
len = MIN(len, left);
if (!len) {
/* We reached the desired transfer length, ignore extra
* elements of the s/g list.
*/
break;
}
addr = mptsas_ld_sg_base(s, flags_and_length, &sgaddr);
qemu_sglist_add(&req->qsg, addr, len);
left -= len;
if (flags_and_length & MPI_SGE_FLAGS_END_OF_LIST) {
break;
}
if (flags_and_length & MPI_SGE_FLAGS_LAST_ELEMENT) {
if (!chain_offset) {
break;
}
ldl_le_pci_dma(pci, next_chain_addr, &flags_and_length,
MEMTXATTRS_UNSPECIFIED);
if ((flags_and_length & MPI_SGE_FLAGS_ELEMENT_TYPE_MASK)
!= MPI_SGE_FLAGS_CHAIN_ELEMENT) {
return MPI_IOCSTATUS_INVALID_SGL;
}
sgaddr = mptsas_ld_sg_base(s, flags_and_length, &next_chain_addr);
chain_offset =
(flags_and_length & MPI_SGE_CHAIN_OFFSET_MASK) >> MPI_SGE_CHAIN_OFFSET_SHIFT;
next_chain_addr = sgaddr + chain_offset * sizeof(uint32_t);
}
}
return 0;
}
static void mptsas_free_request(MPTSASRequest *req)
{
if (req->sreq != NULL) {
req->sreq->hba_private = NULL;
scsi_req_unref(req->sreq);
req->sreq = NULL;
}
qemu_sglist_destroy(&req->qsg);
g_free(req);
}
static int mptsas_scsi_device_find(MPTSASState *s, int bus, int target,
uint8_t *lun, SCSIDevice **sdev)
{
if (bus != 0) {
return MPI_IOCSTATUS_SCSI_INVALID_BUS;
}
if (target >= s->max_devices) {
return MPI_IOCSTATUS_SCSI_INVALID_TARGETID;
}
*sdev = scsi_device_find(&s->bus, bus, target, lun[1]);
if (!*sdev) {
return MPI_IOCSTATUS_SCSI_DEVICE_NOT_THERE;
}
return 0;
}
static int mptsas_process_scsi_io_request(MPTSASState *s,
MPIMsgSCSIIORequest *scsi_io,
hwaddr addr)
{
MPTSASRequest *req;
MPIMsgSCSIIOReply reply;
SCSIDevice *sdev;
int status;
mptsas_fix_scsi_io_endianness(scsi_io);
trace_mptsas_process_scsi_io_request(s, scsi_io->Bus, scsi_io->TargetID,
scsi_io->LUN[1], scsi_io->DataLength);
status = mptsas_scsi_device_find(s, scsi_io->Bus, scsi_io->TargetID,
scsi_io->LUN, &sdev);
if (status) {
goto bad;
}
req = g_new0(MPTSASRequest, 1);
req->scsi_io = *scsi_io;
req->dev = s;
status = mptsas_build_sgl(s, req, addr);
if (status) {
goto free_bad;
}
if (req->qsg.size < scsi_io->DataLength) {
trace_mptsas_sgl_overflow(s, scsi_io->MsgContext, scsi_io->DataLength,
req->qsg.size);
status = MPI_IOCSTATUS_INVALID_SGL;
goto free_bad;
}
req->sreq = scsi_req_new(sdev, scsi_io->MsgContext,
scsi_io->LUN[1], scsi_io->CDB,
scsi_io->CDBLength, req);
if (req->sreq->cmd.xfer > scsi_io->DataLength) {
goto overrun;
}
switch (scsi_io->Control & MPI_SCSIIO_CONTROL_DATADIRECTION_MASK) {
case MPI_SCSIIO_CONTROL_NODATATRANSFER:
if (req->sreq->cmd.mode != SCSI_XFER_NONE) {
goto overrun;
}
break;
case MPI_SCSIIO_CONTROL_WRITE:
if (req->sreq->cmd.mode != SCSI_XFER_TO_DEV) {
goto overrun;
}
break;
case MPI_SCSIIO_CONTROL_READ:
if (req->sreq->cmd.mode != SCSI_XFER_FROM_DEV) {
goto overrun;
}
break;
}
if (scsi_req_enqueue(req->sreq)) {
scsi_req_continue(req->sreq);
}
return 0;
overrun:
trace_mptsas_scsi_overflow(s, scsi_io->MsgContext, req->sreq->cmd.xfer,
scsi_io->DataLength);
status = MPI_IOCSTATUS_SCSI_DATA_OVERRUN;
free_bad:
mptsas_free_request(req);
bad:
memset(&reply, 0, sizeof(reply));
reply.TargetID = scsi_io->TargetID;
reply.Bus = scsi_io->Bus;
reply.MsgLength = sizeof(reply) / 4;
reply.Function = scsi_io->Function;
reply.CDBLength = scsi_io->CDBLength;
reply.SenseBufferLength = scsi_io->SenseBufferLength;
reply.MsgContext = scsi_io->MsgContext;
reply.SCSIState = MPI_SCSI_STATE_NO_SCSI_STATUS;
reply.IOCStatus = status;
mptsas_fix_scsi_io_reply_endianness(&reply);
mptsas_reply(s, (MPIDefaultReply *)&reply);
return 0;
}
typedef struct {
Notifier notifier;
MPTSASState *s;
MPIMsgSCSITaskMgmtReply *reply;
} MPTSASCancelNotifier;
static void mptsas_cancel_notify(Notifier *notifier, void *data)
{
MPTSASCancelNotifier *n = container_of(notifier,
MPTSASCancelNotifier,
notifier);
/* Abusing IOCLogInfo to store the expected number of requests... */
if (++n->reply->TerminationCount == n->reply->IOCLogInfo) {
n->reply->IOCLogInfo = 0;
mptsas_fix_scsi_task_mgmt_reply_endianness(n->reply);
mptsas_post_reply(n->s, (MPIDefaultReply *)n->reply);
g_free(n->reply);
}
g_free(n);
}
static void mptsas_process_scsi_task_mgmt(MPTSASState *s, MPIMsgSCSITaskMgmt *req)
{
MPIMsgSCSITaskMgmtReply reply;
MPIMsgSCSITaskMgmtReply *reply_async;
int status, count;
SCSIDevice *sdev;
SCSIRequest *r, *next;
BusChild *kid;
mptsas_fix_scsi_task_mgmt_endianness(req);
QEMU_BUILD_BUG_ON(MPTSAS_MAX_REQUEST_SIZE < sizeof(*req));
QEMU_BUILD_BUG_ON(sizeof(s->doorbell_msg) < sizeof(*req));
QEMU_BUILD_BUG_ON(sizeof(s->doorbell_reply) < sizeof(reply));
memset(&reply, 0, sizeof(reply));
reply.TargetID = req->TargetID;
reply.Bus = req->Bus;
reply.MsgLength = sizeof(reply) / 4;
reply.Function = req->Function;
reply.TaskType = req->TaskType;
reply.MsgContext = req->MsgContext;
switch (req->TaskType) {
case MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
case MPI_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
status = mptsas_scsi_device_find(s, req->Bus, req->TargetID,
req->LUN, &sdev);
if (status) {
reply.IOCStatus = status;
goto out;
}
if (sdev->lun != req->LUN[1]) {
reply.ResponseCode = MPI_SCSITASKMGMT_RSP_TM_INVALID_LUN;
goto out;
}
QTAILQ_FOREACH_SAFE(r, &sdev->requests, next, next) {
MPTSASRequest *cmd_req = r->hba_private;
if (cmd_req && cmd_req->scsi_io.MsgContext == req->TaskMsgContext) {
break;
}
}
if (r) {
/*
* Assert that the request has not been completed yet, we
* check for it in the loop above.
*/
assert(r->hba_private);
if (req->TaskType == MPI_SCSITASKMGMT_TASKTYPE_QUERY_TASK) {
/* "If the specified command is present in the task set, then
* return a service response set to FUNCTION SUCCEEDED".
*/
reply.ResponseCode = MPI_SCSITASKMGMT_RSP_TM_SUCCEEDED;
} else {
MPTSASCancelNotifier *notifier;
reply_async = g_memdup(&reply, sizeof(MPIMsgSCSITaskMgmtReply));
reply_async->IOCLogInfo = INT_MAX;
count = 1;
notifier = g_new(MPTSASCancelNotifier, 1);
notifier->s = s;
notifier->reply = reply_async;
notifier->notifier.notify = mptsas_cancel_notify;
scsi_req_cancel_async(r, &notifier->notifier);
goto reply_maybe_async;
}
}
break;
case MPI_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
case MPI_SCSITASKMGMT_TASKTYPE_CLEAR_TASK_SET:
status = mptsas_scsi_device_find(s, req->Bus, req->TargetID,
req->LUN, &sdev);
if (status) {
reply.IOCStatus = status;
goto out;
}
if (sdev->lun != req->LUN[1]) {
reply.ResponseCode = MPI_SCSITASKMGMT_RSP_TM_INVALID_LUN;
goto out;
}
reply_async = g_memdup(&reply, sizeof(MPIMsgSCSITaskMgmtReply));
reply_async->IOCLogInfo = INT_MAX;
count = 0;
QTAILQ_FOREACH_SAFE(r, &sdev->requests, next, next) {
if (r->hba_private) {
MPTSASCancelNotifier *notifier;
count++;
notifier = g_new(MPTSASCancelNotifier, 1);
notifier->s = s;
notifier->reply = reply_async;
notifier->notifier.notify = mptsas_cancel_notify;
scsi_req_cancel_async(r, &notifier->notifier);
}
}
reply_maybe_async:
if (reply_async->TerminationCount < count) {
reply_async->IOCLogInfo = count;
return;
}
g_free(reply_async);
reply.TerminationCount = count;
break;
case MPI_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET:
status = mptsas_scsi_device_find(s, req->Bus, req->TargetID,
req->LUN, &sdev);
if (status) {
reply.IOCStatus = status;
goto out;
}
if (sdev->lun != req->LUN[1]) {
reply.ResponseCode = MPI_SCSITASKMGMT_RSP_TM_INVALID_LUN;
goto out;
}
device_cold_reset(&sdev->qdev);
break;
case MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
if (req->Bus != 0) {
reply.IOCStatus = MPI_IOCSTATUS_SCSI_INVALID_BUS;
goto out;
}
if (req->TargetID > s->max_devices) {
reply.IOCStatus = MPI_IOCSTATUS_SCSI_INVALID_TARGETID;
goto out;
}
QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
sdev = SCSI_DEVICE(kid->child);
if (sdev->channel == 0 && sdev->id == req->TargetID) {
device_cold_reset(kid->child);
}
}
break;
case MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS:
bus_cold_reset(BUS(&s->bus));
break;
default:
reply.ResponseCode = MPI_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED;
break;
}
out:
mptsas_fix_scsi_task_mgmt_reply_endianness(&reply);
mptsas_post_reply(s, (MPIDefaultReply *)&reply);
}
static void mptsas_process_ioc_init(MPTSASState *s, MPIMsgIOCInit *req)
{
MPIMsgIOCInitReply reply;
mptsas_fix_ioc_init_endianness(req);
QEMU_BUILD_BUG_ON(MPTSAS_MAX_REQUEST_SIZE < sizeof(*req));
QEMU_BUILD_BUG_ON(sizeof(s->doorbell_msg) < sizeof(*req));
QEMU_BUILD_BUG_ON(sizeof(s->doorbell_reply) < sizeof(reply));
s->who_init = req->WhoInit;
s->reply_frame_size = req->ReplyFrameSize;
s->max_buses = req->MaxBuses;
s->max_devices = req->MaxDevices ? req->MaxDevices : 256;
s->host_mfa_high_addr = (hwaddr)req->HostMfaHighAddr << 32;
s->sense_buffer_high_addr = (hwaddr)req->SenseBufferHighAddr << 32;
if (s->state == MPI_IOC_STATE_READY) {
s->state = MPI_IOC_STATE_OPERATIONAL;
}
memset(&reply, 0, sizeof(reply));
reply.WhoInit = s->who_init;
reply.MsgLength = sizeof(reply) / 4;
reply.Function = req->Function;
reply.MaxDevices = s->max_devices;
reply.MaxBuses = s->max_buses;
reply.MsgContext = req->MsgContext;
mptsas_fix_ioc_init_reply_endianness(&reply);
mptsas_reply(s, (MPIDefaultReply *)&reply);
}
static void mptsas_process_ioc_facts(MPTSASState *s,
MPIMsgIOCFacts *req)
{
MPIMsgIOCFactsReply reply;
mptsas_fix_ioc_facts_endianness(req);
QEMU_BUILD_BUG_ON(MPTSAS_MAX_REQUEST_SIZE < sizeof(*req));
QEMU_BUILD_BUG_ON(sizeof(s->doorbell_msg) < sizeof(*req));
QEMU_BUILD_BUG_ON(sizeof(s->doorbell_reply) < sizeof(reply));
memset(&reply, 0, sizeof(reply));
reply.MsgVersion = 0x0105;
reply.MsgLength = sizeof(reply) / 4;
reply.Function = req->Function;
reply.MsgContext = req->MsgContext;
reply.MaxChainDepth = MPTSAS_MAXIMUM_CHAIN_DEPTH;
reply.WhoInit = s->who_init;
reply.BlockSize = MPTSAS_MAX_REQUEST_SIZE / sizeof(uint32_t);
reply.ReplyQueueDepth = ARRAY_SIZE(s->reply_post) - 1;
QEMU_BUILD_BUG_ON(ARRAY_SIZE(s->reply_post) != ARRAY_SIZE(s->reply_free));
reply.RequestFrameSize = 128;
reply.ProductID = MPTSAS1068_PRODUCT_ID;
reply.CurrentHostMfaHighAddr = s->host_mfa_high_addr >> 32;
reply.GlobalCredits = ARRAY_SIZE(s->request_post) - 1;
reply.NumberOfPorts = MPTSAS_NUM_PORTS;
reply.CurrentSenseBufferHighAddr = s->sense_buffer_high_addr >> 32;
reply.CurReplyFrameSize = s->reply_frame_size;
reply.MaxDevices = s->max_devices;
reply.MaxBuses = s->max_buses;
reply.FWVersionDev = 0;
reply.FWVersionUnit = 0x92;
reply.FWVersionMinor = 0x32;
reply.FWVersionMajor = 0x1;
mptsas_fix_ioc_facts_reply_endianness(&reply);
mptsas_reply(s, (MPIDefaultReply *)&reply);
}
static void mptsas_process_port_facts(MPTSASState *s,
MPIMsgPortFacts *req)
{
MPIMsgPortFactsReply reply;
mptsas_fix_port_facts_endianness(req);
QEMU_BUILD_BUG_ON(MPTSAS_MAX_REQUEST_SIZE < sizeof(*req));
QEMU_BUILD_BUG_ON(sizeof(s->doorbell_msg) < sizeof(*req));
QEMU_BUILD_BUG_ON(sizeof(s->doorbell_reply) < sizeof(reply));
memset(&reply, 0, sizeof(reply));
reply.MsgLength = sizeof(reply) / 4;
reply.Function = req->Function;
reply.PortNumber = req->PortNumber;
reply.MsgContext = req->MsgContext;
if (req->PortNumber < MPTSAS_NUM_PORTS) {
reply.PortType = MPI_PORTFACTS_PORTTYPE_SAS;
reply.MaxDevices = MPTSAS_NUM_PORTS;
reply.PortSCSIID = MPTSAS_NUM_PORTS;
reply.ProtocolFlags = MPI_PORTFACTS_PROTOCOL_LOGBUSADDR | MPI_PORTFACTS_PROTOCOL_INITIATOR;
}
mptsas_fix_port_facts_reply_endianness(&reply);
mptsas_reply(s, (MPIDefaultReply *)&reply);
}
static void mptsas_process_port_enable(MPTSASState *s,
MPIMsgPortEnable *req)
{
MPIMsgPortEnableReply reply;
mptsas_fix_port_enable_endianness(req);
QEMU_BUILD_BUG_ON(MPTSAS_MAX_REQUEST_SIZE < sizeof(*req));
QEMU_BUILD_BUG_ON(sizeof(s->doorbell_msg) < sizeof(*req));
QEMU_BUILD_BUG_ON(sizeof(s->doorbell_reply) < sizeof(reply));
memset(&reply, 0, sizeof(reply));
reply.MsgLength = sizeof(reply) / 4;
reply.PortNumber = req->PortNumber;
reply.Function = req->Function;
reply.MsgContext = req->MsgContext;
mptsas_fix_port_enable_reply_endianness(&reply);
mptsas_reply(s, (MPIDefaultReply *)&reply);
}
static void mptsas_process_event_notification(MPTSASState *s,
MPIMsgEventNotify *req)
{
MPIMsgEventNotifyReply reply;
mptsas_fix_event_notification_endianness(req);
QEMU_BUILD_BUG_ON(MPTSAS_MAX_REQUEST_SIZE < sizeof(*req));
QEMU_BUILD_BUG_ON(sizeof(s->doorbell_msg) < sizeof(*req));
QEMU_BUILD_BUG_ON(sizeof(s->doorbell_reply) < sizeof(reply));
/* Don't even bother storing whether event notification is enabled,
* since it is not accessible.
*/
memset(&reply, 0, sizeof(reply));
reply.EventDataLength = sizeof(reply.Data) / 4;
reply.MsgLength = sizeof(reply) / 4;
reply.Function = req->Function;
/* This is set because events are sent through the reply FIFOs. */
reply.MsgFlags = MPI_MSGFLAGS_CONTINUATION_REPLY;
reply.MsgContext = req->MsgContext;
reply.Event = MPI_EVENT_EVENT_CHANGE;
reply.Data[0] = !!req->Switch;
mptsas_fix_event_notification_reply_endianness(&reply);
mptsas_reply(s, (MPIDefaultReply *)&reply);
}
static void mptsas_process_message(MPTSASState *s, MPIRequestHeader *req)
{
trace_mptsas_process_message(s, req->Function, req->MsgContext);
switch (req->Function) {
case MPI_FUNCTION_SCSI_TASK_MGMT:
mptsas_process_scsi_task_mgmt(s, (MPIMsgSCSITaskMgmt *)req);
break;
case MPI_FUNCTION_IOC_INIT:
mptsas_process_ioc_init(s, (MPIMsgIOCInit *)req);
break;
case MPI_FUNCTION_IOC_FACTS:
mptsas_process_ioc_facts(s, (MPIMsgIOCFacts *)req);
break;
case MPI_FUNCTION_PORT_FACTS:
mptsas_process_port_facts(s, (MPIMsgPortFacts *)req);
break;
case MPI_FUNCTION_PORT_ENABLE:
mptsas_process_port_enable(s, (MPIMsgPortEnable *)req);
break;
case MPI_FUNCTION_EVENT_NOTIFICATION:
mptsas_process_event_notification(s, (MPIMsgEventNotify *)req);
break;
case MPI_FUNCTION_CONFIG:
mptsas_process_config(s, (MPIMsgConfig *)req);
break;
default:
trace_mptsas_unhandled_cmd(s, req->Function, 0);
mptsas_set_fault(s, MPI_IOCSTATUS_INVALID_FUNCTION);
break;
}
}
static void mptsas_fetch_request(MPTSASState *s)
{
PCIDevice *pci = (PCIDevice *) s;
char req[MPTSAS_MAX_REQUEST_SIZE];
MPIRequestHeader *hdr = (MPIRequestHeader *)req;
hwaddr addr;
int size;
/* Read the message header from the guest first. */
addr = s->host_mfa_high_addr | MPTSAS_FIFO_GET(s, request_post);
pci_dma_read(pci, addr, req, sizeof(*hdr));
if (hdr->Function < ARRAY_SIZE(mpi_request_sizes) &&
mpi_request_sizes[hdr->Function]) {
/* Read the rest of the request based on the type. Do not
* reread everything, as that could cause a TOC/TOU mismatch
* and leak data from the QEMU stack.
*/
size = mpi_request_sizes[hdr->Function];
assert(size <= MPTSAS_MAX_REQUEST_SIZE);
pci_dma_read(pci, addr + sizeof(*hdr), &req[sizeof(*hdr)],
size - sizeof(*hdr));
}
if (hdr->Function == MPI_FUNCTION_SCSI_IO_REQUEST) {
/* SCSI I/O requests are separate from mptsas_process_message
* because they cannot be sent through the doorbell yet.
*/
mptsas_process_scsi_io_request(s, (MPIMsgSCSIIORequest *)req, addr);
} else {
mptsas_process_message(s, (MPIRequestHeader *)req);
}
}
static void mptsas_fetch_requests(void *opaque)
{
MPTSASState *s = opaque;
if (s->state != MPI_IOC_STATE_OPERATIONAL) {
mptsas_set_fault(s, MPI_IOCSTATUS_INVALID_STATE);
return;
}
while (!MPTSAS_FIFO_EMPTY(s, request_post)) {
mptsas_fetch_request(s);
}
}
static void mptsas_soft_reset(MPTSASState *s)
{
uint32_t save_mask;
trace_mptsas_reset(s);
/* Temporarily disable interrupts */
save_mask = s->intr_mask;
s->intr_mask = MPI_HIM_DIM | MPI_HIM_RIM;
mptsas_update_interrupt(s);
bus_cold_reset(BUS(&s->bus));
s->intr_status = 0;
s->intr_mask = save_mask;
s->reply_free_tail = 0;
s->reply_free_head = 0;
s->reply_post_tail = 0;
s->reply_post_head = 0;
s->request_post_tail = 0;
s->request_post_head = 0;
qemu_bh_cancel(s->request_bh);
s->state = MPI_IOC_STATE_READY;
}
static uint32_t mptsas_doorbell_read(MPTSASState *s)
{
uint32_t ret;
ret = (s->who_init << MPI_DOORBELL_WHO_INIT_SHIFT) & MPI_DOORBELL_WHO_INIT_MASK;
ret |= s->state;
switch (s->doorbell_state) {
case DOORBELL_NONE:
break;
case DOORBELL_WRITE:
ret |= MPI_DOORBELL_ACTIVE;
break;
case DOORBELL_READ:
/* Get rid of the IOC fault code. */
ret &= ~MPI_DOORBELL_DATA_MASK;
assert(s->intr_status & MPI_HIS_DOORBELL_INTERRUPT);
assert(s->doorbell_reply_idx <= s->doorbell_reply_size);
ret |= MPI_DOORBELL_ACTIVE;
if (s->doorbell_reply_idx < s->doorbell_reply_size) {
/* For more information about this endian switch, see the
* commit message for commit 36b62ae ("fw_cfg: fix endianness in
* fw_cfg_data_mem_read() / _write()", 2015-01-16).
*/
ret |= le16_to_cpu(s->doorbell_reply[s->doorbell_reply_idx++]);
}
break;
default:
abort();
}
return ret;
}
static void mptsas_doorbell_write(MPTSASState *s, uint32_t val)
{
if (s->doorbell_state == DOORBELL_WRITE) {
if (s->doorbell_idx < s->doorbell_cnt) {
/* For more information about this endian switch, see the
* commit message for commit 36b62ae ("fw_cfg: fix endianness in
* fw_cfg_data_mem_read() / _write()", 2015-01-16).
*/
s->doorbell_msg[s->doorbell_idx++] = cpu_to_le32(val);
if (s->doorbell_idx == s->doorbell_cnt) {
mptsas_process_message(s, (MPIRequestHeader *)s->doorbell_msg);
}
}
return;
}
switch ((val & MPI_DOORBELL_FUNCTION_MASK) >> MPI_DOORBELL_FUNCTION_SHIFT) {
case MPI_FUNCTION_IOC_MESSAGE_UNIT_RESET:
mptsas_soft_reset(s);
break;
case MPI_FUNCTION_IO_UNIT_RESET:
break;
case MPI_FUNCTION_HANDSHAKE:
s->doorbell_state = DOORBELL_WRITE;
s->doorbell_idx = 0;
s->doorbell_cnt = (val & MPI_DOORBELL_ADD_DWORDS_MASK)
>> MPI_DOORBELL_ADD_DWORDS_SHIFT;
s->intr_status |= MPI_HIS_DOORBELL_INTERRUPT;
mptsas_update_interrupt(s);
break;
default:
trace_mptsas_unhandled_doorbell_cmd(s, val);
break;
}
}
static void mptsas_write_sequence_write(MPTSASState *s, uint32_t val)
{
/* If the diagnostic register is enabled, any write to this register
* will disable it. Otherwise, the guest has to do a magic five-write
* sequence.
*/
if (s->diagnostic & MPI_DIAG_DRWE) {
goto disable;
}
switch (s->diagnostic_idx) {
case 0:
if ((val & MPI_WRSEQ_KEY_VALUE_MASK) != MPI_WRSEQ_1ST_KEY_VALUE) {
goto disable;
}
break;
case 1:
if ((val & MPI_WRSEQ_KEY_VALUE_MASK) != MPI_WRSEQ_2ND_KEY_VALUE) {
goto disable;
}
break;
case 2:
if ((val & MPI_WRSEQ_KEY_VALUE_MASK) != MPI_WRSEQ_3RD_KEY_VALUE) {
goto disable;
}
break;
case 3:
if ((val & MPI_WRSEQ_KEY_VALUE_MASK) != MPI_WRSEQ_4TH_KEY_VALUE) {
goto disable;
}
break;
case 4:
if ((val & MPI_WRSEQ_KEY_VALUE_MASK) != MPI_WRSEQ_5TH_KEY_VALUE) {
goto disable;
}
/* Prepare Spaceball One for departure, and change the
* combination on my luggage!
*/
s->diagnostic |= MPI_DIAG_DRWE;
break;
}
s->diagnostic_idx++;
return;
disable:
s->diagnostic &= ~MPI_DIAG_DRWE;
s->diagnostic_idx = 0;
}
static int mptsas_hard_reset(MPTSASState *s)
{
mptsas_soft_reset(s);
s->intr_mask = MPI_HIM_DIM | MPI_HIM_RIM;
s->host_mfa_high_addr = 0;
s->sense_buffer_high_addr = 0;
s->reply_frame_size = 0;
s->max_devices = MPTSAS_NUM_PORTS;
s->max_buses = 1;
return 0;
}
static void mptsas_interrupt_status_write(MPTSASState *s)
{
switch (s->doorbell_state) {
case DOORBELL_NONE:
case DOORBELL_WRITE:
s->intr_status &= ~MPI_HIS_DOORBELL_INTERRUPT;
break;
case DOORBELL_READ:
/* The reply can be read continuously, so leave the interrupt up. */
assert(s->intr_status & MPI_HIS_DOORBELL_INTERRUPT);
if (s->doorbell_reply_idx == s->doorbell_reply_size) {
s->doorbell_state = DOORBELL_NONE;
}
break;
default:
abort();
}
mptsas_update_interrupt(s);
}
static uint32_t mptsas_reply_post_read(MPTSASState *s)
{
uint32_t ret;
if (!MPTSAS_FIFO_EMPTY(s, reply_post)) {
ret = MPTSAS_FIFO_GET(s, reply_post);
} else {
ret = -1;
s->intr_status &= ~MPI_HIS_REPLY_MESSAGE_INTERRUPT;
mptsas_update_interrupt(s);
}
return ret;
}
static uint64_t mptsas_mmio_read(void *opaque, hwaddr addr,
unsigned size)
{
MPTSASState *s = opaque;
uint32_t ret = 0;
switch (addr & ~3) {
case MPI_DOORBELL_OFFSET:
ret = mptsas_doorbell_read(s);
break;
case MPI_DIAGNOSTIC_OFFSET:
ret = s->diagnostic;
break;
case MPI_HOST_INTERRUPT_STATUS_OFFSET:
ret = s->intr_status;
break;
case MPI_HOST_INTERRUPT_MASK_OFFSET:
ret = s->intr_mask;
break;
case MPI_REPLY_POST_FIFO_OFFSET:
ret = mptsas_reply_post_read(s);
break;
default:
trace_mptsas_mmio_unhandled_read(s, addr);
break;
}
trace_mptsas_mmio_read(s, addr, ret);
return ret;
}
static void mptsas_mmio_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
MPTSASState *s = opaque;
trace_mptsas_mmio_write(s, addr, val);
switch (addr) {
case MPI_DOORBELL_OFFSET:
mptsas_doorbell_write(s, val);
break;
case MPI_WRITE_SEQUENCE_OFFSET:
mptsas_write_sequence_write(s, val);
break;
case MPI_DIAGNOSTIC_OFFSET:
if (val & MPI_DIAG_RESET_ADAPTER) {
mptsas_hard_reset(s);
}
break;
case MPI_HOST_INTERRUPT_STATUS_OFFSET:
mptsas_interrupt_status_write(s);
break;
case MPI_HOST_INTERRUPT_MASK_OFFSET:
s->intr_mask = val & (MPI_HIM_RIM | MPI_HIM_DIM);
mptsas_update_interrupt(s);
break;
case MPI_REQUEST_POST_FIFO_OFFSET:
if (MPTSAS_FIFO_FULL(s, request_post)) {
mptsas_set_fault(s, MPI_IOCSTATUS_INSUFFICIENT_RESOURCES);
} else {
MPTSAS_FIFO_PUT(s, request_post, val & ~0x03);
qemu_bh_schedule(s->request_bh);
}
break;
case MPI_REPLY_FREE_FIFO_OFFSET:
if (MPTSAS_FIFO_FULL(s, reply_free)) {
mptsas_set_fault(s, MPI_IOCSTATUS_INSUFFICIENT_RESOURCES);
} else {
MPTSAS_FIFO_PUT(s, reply_free, val);
}
break;
default:
trace_mptsas_mmio_unhandled_write(s, addr, val);
break;
}
}
static const MemoryRegionOps mptsas_mmio_ops = {
.read = mptsas_mmio_read,
.write = mptsas_mmio_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.impl = {
.min_access_size = 4,
.max_access_size = 4,
}
};
static const MemoryRegionOps mptsas_port_ops = {
.read = mptsas_mmio_read,
.write = mptsas_mmio_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.impl = {
.min_access_size = 4,
.max_access_size = 4,
}
};
static uint64_t mptsas_diag_read(void *opaque, hwaddr addr,
unsigned size)
{
MPTSASState *s = opaque;
trace_mptsas_diag_read(s, addr, 0);
return 0;
}
static void mptsas_diag_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
MPTSASState *s = opaque;
trace_mptsas_diag_write(s, addr, val);
}
static const MemoryRegionOps mptsas_diag_ops = {
.read = mptsas_diag_read,
.write = mptsas_diag_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.impl = {
.min_access_size = 4,
.max_access_size = 4,
}
};
static QEMUSGList *mptsas_get_sg_list(SCSIRequest *sreq)
{
MPTSASRequest *req = sreq->hba_private;
return &req->qsg;
}
static void mptsas_command_complete(SCSIRequest *sreq,
size_t resid)
{
MPTSASRequest *req = sreq->hba_private;
MPTSASState *s = req->dev;
uint8_t sense_buf[SCSI_SENSE_BUF_SIZE];
uint8_t sense_len;
hwaddr sense_buffer_addr = req->dev->sense_buffer_high_addr |
req->scsi_io.SenseBufferLowAddr;
trace_mptsas_command_complete(s, req->scsi_io.MsgContext,
sreq->status, resid);
sense_len = scsi_req_get_sense(sreq, sense_buf, SCSI_SENSE_BUF_SIZE);
if (sense_len > 0) {
pci_dma_write(PCI_DEVICE(s), sense_buffer_addr, sense_buf,
MIN(req->scsi_io.SenseBufferLength, sense_len));
}
if (sreq->status != GOOD || resid ||
req->dev->doorbell_state == DOORBELL_WRITE) {
MPIMsgSCSIIOReply reply;
memset(&reply, 0, sizeof(reply));
reply.TargetID = req->scsi_io.TargetID;
reply.Bus = req->scsi_io.Bus;
reply.MsgLength = sizeof(reply) / 4;
reply.Function = req->scsi_io.Function;
reply.CDBLength = req->scsi_io.CDBLength;
reply.SenseBufferLength = req->scsi_io.SenseBufferLength;
reply.MsgFlags = req->scsi_io.MsgFlags;
reply.MsgContext = req->scsi_io.MsgContext;
reply.SCSIStatus = sreq->status;
if (sreq->status == GOOD) {
reply.TransferCount = req->scsi_io.DataLength - resid;
if (resid) {
reply.IOCStatus = MPI_IOCSTATUS_SCSI_DATA_UNDERRUN;
}
} else {
reply.SCSIState = MPI_SCSI_STATE_AUTOSENSE_VALID;
reply.SenseCount = sense_len;
reply.IOCStatus = MPI_IOCSTATUS_SCSI_DATA_UNDERRUN;
}
mptsas_fix_scsi_io_reply_endianness(&reply);
mptsas_post_reply(req->dev, (MPIDefaultReply *)&reply);
} else {
mptsas_turbo_reply(req->dev, req->scsi_io.MsgContext);
}
mptsas_free_request(req);
}
static void mptsas_request_cancelled(SCSIRequest *sreq)
{
MPTSASRequest *req = sreq->hba_private;
MPIMsgSCSIIOReply reply;
memset(&reply, 0, sizeof(reply));
reply.TargetID = req->scsi_io.TargetID;
reply.Bus = req->scsi_io.Bus;
reply.MsgLength = sizeof(reply) / 4;
reply.Function = req->scsi_io.Function;
reply.CDBLength = req->scsi_io.CDBLength;
reply.SenseBufferLength = req->scsi_io.SenseBufferLength;
reply.MsgFlags = req->scsi_io.MsgFlags;
reply.MsgContext = req->scsi_io.MsgContext;
reply.SCSIState = MPI_SCSI_STATE_NO_SCSI_STATUS;
reply.IOCStatus = MPI_IOCSTATUS_SCSI_TASK_TERMINATED;
mptsas_fix_scsi_io_reply_endianness(&reply);
mptsas_post_reply(req->dev, (MPIDefaultReply *)&reply);
mptsas_free_request(req);
}
static void mptsas_save_request(QEMUFile *f, SCSIRequest *sreq)
{
MPTSASRequest *req = sreq->hba_private;
int i;
qemu_put_buffer(f, (unsigned char *)&req->scsi_io, sizeof(req->scsi_io));
qemu_put_be32(f, req->qsg.nsg);
for (i = 0; i < req->qsg.nsg; i++) {
qemu_put_be64(f, req->qsg.sg[i].base);
qemu_put_be64(f, req->qsg.sg[i].len);
}
}
static void *mptsas_load_request(QEMUFile *f, SCSIRequest *sreq)
{
SCSIBus *bus = sreq->bus;
MPTSASState *s = container_of(bus, MPTSASState, bus);
PCIDevice *pci = PCI_DEVICE(s);
MPTSASRequest *req;
int i, n;
req = g_new(MPTSASRequest, 1);
qemu_get_buffer(f, (unsigned char *)&req->scsi_io, sizeof(req->scsi_io));
n = qemu_get_be32(f);
/* TODO: add a way for SCSIBusInfo's load_request to fail,
* and fail migration instead of asserting here.
* This is just one thing (there are probably more) that must be
* fixed before we can allow NDEBUG compilation.
*/
assert(n >= 0);
pci_dma_sglist_init(&req->qsg, pci, n);
for (i = 0; i < n; i++) {
uint64_t base = qemu_get_be64(f);
uint64_t len = qemu_get_be64(f);
qemu_sglist_add(&req->qsg, base, len);
}
scsi_req_ref(sreq);
req->sreq = sreq;
req->dev = s;
return req;
}
static const struct SCSIBusInfo mptsas_scsi_info = {
.tcq = true,
.max_target = MPTSAS_NUM_PORTS,
.max_lun = 1,
.get_sg_list = mptsas_get_sg_list,
.complete = mptsas_command_complete,
.cancel = mptsas_request_cancelled,
.save_request = mptsas_save_request,
.load_request = mptsas_load_request,
};
static void mptsas_scsi_realize(PCIDevice *dev, Error **errp)
{
MPTSASState *s = MPT_SAS(dev);
Error *err = NULL;
int ret;
dev->config[PCI_LATENCY_TIMER] = 0;
dev->config[PCI_INTERRUPT_PIN] = 0x01;
if (s->msi != ON_OFF_AUTO_OFF) {
ret = msi_init(dev, 0, 1, true, false, &err);
/* Any error other than -ENOTSUP(board's MSI support is broken)
* is a programming error */
assert(!ret || ret == -ENOTSUP);
if (ret && s->msi == ON_OFF_AUTO_ON) {
/* Can't satisfy user's explicit msi=on request, fail */
error_append_hint(&err, "You have to use msi=auto (default) or "
"msi=off with this machine type.\n");
error_propagate(errp, err);
return;
}
assert(!err || s->msi == ON_OFF_AUTO_AUTO);
/* With msi=auto, we fall back to MSI off silently */
error_free(err);
/* Only used for migration. */
s->msi_in_use = (ret == 0);
}
memory_region_init_io(&s->mmio_io, OBJECT(s), &mptsas_mmio_ops, s,
"mptsas-mmio", 0x4000);
memory_region_init_io(&s->port_io, OBJECT(s), &mptsas_port_ops, s,
"mptsas-io", 256);
memory_region_init_io(&s->diag_io, OBJECT(s), &mptsas_diag_ops, s,
"mptsas-diag", 0x10000);
pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->port_io);
pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY |
PCI_BASE_ADDRESS_MEM_TYPE_32, &s->mmio_io);
pci_register_bar(dev, 2, PCI_BASE_ADDRESS_SPACE_MEMORY |
PCI_BASE_ADDRESS_MEM_TYPE_32, &s->diag_io);
if (!s->sas_addr) {
s->sas_addr = ((NAA_LOCALLY_ASSIGNED_ID << 24) |
IEEE_COMPANY_LOCALLY_ASSIGNED) << 36;
s->sas_addr |= (pci_dev_bus_num(dev) << 16);
s->sas_addr |= (PCI_SLOT(dev->devfn) << 8);
s->sas_addr |= PCI_FUNC(dev->devfn);
}
s->max_devices = MPTSAS_NUM_PORTS;
s->request_bh = qemu_bh_new_guarded(mptsas_fetch_requests, s,
&DEVICE(dev)->mem_reentrancy_guard);
scsi_bus_init(&s->bus, sizeof(s->bus), &dev->qdev, &mptsas_scsi_info);
}
static void mptsas_scsi_uninit(PCIDevice *dev)
{
MPTSASState *s = MPT_SAS(dev);
qemu_bh_delete(s->request_bh);
msi_uninit(dev);
}
static void mptsas_reset(DeviceState *dev)
{
MPTSASState *s = MPT_SAS(dev);
mptsas_hard_reset(s);
}
static int mptsas_post_load(void *opaque, int version_id)
{
MPTSASState *s = opaque;
if (s->doorbell_idx > s->doorbell_cnt ||
s->doorbell_cnt > ARRAY_SIZE(s->doorbell_msg) ||
s->doorbell_reply_idx > s->doorbell_reply_size ||
s->doorbell_reply_size > ARRAY_SIZE(s->doorbell_reply) ||
MPTSAS_FIFO_INVALID(s, request_post) ||
MPTSAS_FIFO_INVALID(s, reply_post) ||
MPTSAS_FIFO_INVALID(s, reply_free) ||
s->diagnostic_idx > 4) {
return -EINVAL;
}
return 0;
}
static const VMStateDescription vmstate_mptsas = {
.name = "mptsas",
.version_id = 0,
.minimum_version_id = 0,
.post_load = mptsas_post_load,
.fields = (VMStateField[]) {
VMSTATE_PCI_DEVICE(dev, MPTSASState),
VMSTATE_BOOL(msi_in_use, MPTSASState),
VMSTATE_UINT32(state, MPTSASState),
VMSTATE_UINT8(who_init, MPTSASState),
VMSTATE_UINT8(doorbell_state, MPTSASState),
VMSTATE_UINT32_ARRAY(doorbell_msg, MPTSASState, 256),
VMSTATE_INT32(doorbell_idx, MPTSASState),
VMSTATE_INT32(doorbell_cnt, MPTSASState),
VMSTATE_UINT16_ARRAY(doorbell_reply, MPTSASState, 256),
VMSTATE_INT32(doorbell_reply_idx, MPTSASState),
VMSTATE_INT32(doorbell_reply_size, MPTSASState),
VMSTATE_UINT32(diagnostic, MPTSASState),
VMSTATE_UINT8(diagnostic_idx, MPTSASState),
VMSTATE_UINT32(intr_status, MPTSASState),
VMSTATE_UINT32(intr_mask, MPTSASState),
VMSTATE_UINT32_ARRAY(request_post, MPTSASState,
MPTSAS_REQUEST_QUEUE_DEPTH + 1),
VMSTATE_UINT16(request_post_head, MPTSASState),
VMSTATE_UINT16(request_post_tail, MPTSASState),
VMSTATE_UINT32_ARRAY(reply_post, MPTSASState,
MPTSAS_REPLY_QUEUE_DEPTH + 1),
VMSTATE_UINT16(reply_post_head, MPTSASState),
VMSTATE_UINT16(reply_post_tail, MPTSASState),
VMSTATE_UINT32_ARRAY(reply_free, MPTSASState,
MPTSAS_REPLY_QUEUE_DEPTH + 1),
VMSTATE_UINT16(reply_free_head, MPTSASState),
VMSTATE_UINT16(reply_free_tail, MPTSASState),
VMSTATE_UINT16(max_buses, MPTSASState),
VMSTATE_UINT16(max_devices, MPTSASState),
VMSTATE_UINT16(reply_frame_size, MPTSASState),
VMSTATE_UINT64(host_mfa_high_addr, MPTSASState),
VMSTATE_UINT64(sense_buffer_high_addr, MPTSASState),
VMSTATE_END_OF_LIST()
}
};
static Property mptsas_properties[] = {
DEFINE_PROP_UINT64("sas_address", MPTSASState, sas_addr, 0),
/* TODO: test MSI support under Windows */
DEFINE_PROP_ON_OFF_AUTO("msi", MPTSASState, msi, ON_OFF_AUTO_AUTO),
DEFINE_PROP_END_OF_LIST(),
};
static void mptsas1068_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
PCIDeviceClass *pc = PCI_DEVICE_CLASS(oc);
pc->realize = mptsas_scsi_realize;
pc->exit = mptsas_scsi_uninit;
pc->romfile = 0;
pc->vendor_id = PCI_VENDOR_ID_LSI_LOGIC;
pc->device_id = PCI_DEVICE_ID_LSI_SAS1068;
pc->subsystem_vendor_id = PCI_VENDOR_ID_LSI_LOGIC;
pc->subsystem_id = 0x8000;
pc->class_id = PCI_CLASS_STORAGE_SCSI;
device_class_set_props(dc, mptsas_properties);
dc->reset = mptsas_reset;
dc->vmsd = &vmstate_mptsas;
dc->desc = "LSI SAS 1068";
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
}
static const TypeInfo mptsas_info = {
.name = TYPE_MPTSAS1068,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(MPTSASState),
.class_init = mptsas1068_class_init,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
static void mptsas_register_types(void)
{
type_register(&mptsas_info);
}
type_init(mptsas_register_types)
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