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qemu-e2k/hw/scsi/megasas.c
Peter Maydell 739e95f574 scsi: Replace scsi_bus_new() with scsi_bus_init(), scsi_bus_init_named() 
The function scsi_bus_new() creates a new SCSI bus; callers can
either pass in a name argument to specify the name of the new bus, or
they can pass in NULL to allow the bus to be given an automatically
generated unique name.  Almost all callers want to use the
autogenerated name; the only exception is the virtio-scsi device.

Taking a name argument that should almost always be NULL is an
easy-to-misuse API design -- it encourages callers to think perhaps
they should pass in some standard name like "scsi" or "scsi-bus".  We
don't do this anywhere for SCSI, but we do (incorrectly) do it for
other bus types such as i2c.

The function name also implies that it will return a newly allocated
object, when it in fact does in-place allocation.  We more commonly
name such functions foo_init(), with foo_new() being the
allocate-and-return variant.

Replace all the scsi_bus_new() callsites with either:
 * scsi_bus_init() for the usual case where the caller wants
   an autogenerated bus name
 * scsi_bus_init_named() for the rare case where the caller
   needs to specify the bus name

and document that for the _named() version it's then the caller's
responsibility to think about uniqueness of bus names.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20210923121153.23754-2-peter.maydell@linaro.org
2021-09-30 13:42:10 +01:00

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/*
* QEMU MegaRAID SAS 8708EM2 Host Bus Adapter emulation
* Based on the linux driver code at drivers/scsi/megaraid
*
* Copyright (c) 2009-2012 Hannes Reinecke, SUSE Labs
*
* 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 "qemu-common.h"
#include "hw/pci/pci.h"
#include "hw/qdev-properties.h"
#include "sysemu/dma.h"
#include "sysemu/block-backend.h"
#include "hw/pci/msi.h"
#include "hw/pci/msix.h"
#include "qemu/iov.h"
#include "qemu/module.h"
#include "hw/scsi/scsi.h"
#include "scsi/constants.h"
#include "trace.h"
#include "qapi/error.h"
#include "mfi.h"
#include "migration/vmstate.h"
#include "qom/object.h"
#define MEGASAS_VERSION_GEN1 "1.70"
#define MEGASAS_VERSION_GEN2 "1.80"
#define MEGASAS_MAX_FRAMES 2048 /* Firmware limit at 65535 */
#define MEGASAS_DEFAULT_FRAMES 1000 /* Windows requires this */
#define MEGASAS_GEN2_DEFAULT_FRAMES 1008 /* Windows requires this */
#define MEGASAS_MAX_SGE 128 /* Firmware limit */
#define MEGASAS_DEFAULT_SGE 80
#define MEGASAS_MAX_SECTORS 0xFFFF /* No real limit */
#define MEGASAS_MAX_ARRAYS 128
#define MEGASAS_HBA_SERIAL "QEMU123456"
#define NAA_LOCALLY_ASSIGNED_ID 0x3ULL
#define IEEE_COMPANY_LOCALLY_ASSIGNED 0x525400
#define MEGASAS_FLAG_USE_JBOD 0
#define MEGASAS_MASK_USE_JBOD (1 << MEGASAS_FLAG_USE_JBOD)
#define MEGASAS_FLAG_USE_QUEUE64 1
#define MEGASAS_MASK_USE_QUEUE64 (1 << MEGASAS_FLAG_USE_QUEUE64)
typedef struct MegasasCmd {
uint32_t index;
uint16_t flags;
uint16_t count;
uint64_t context;
hwaddr pa;
hwaddr pa_size;
uint32_t dcmd_opcode;
union mfi_frame *frame;
SCSIRequest *req;
QEMUSGList qsg;
void *iov_buf;
size_t iov_size;
size_t iov_offset;
struct MegasasState *state;
} MegasasCmd;
struct MegasasState {
/*< private >*/
PCIDevice parent_obj;
/*< public >*/
MemoryRegion mmio_io;
MemoryRegion port_io;
MemoryRegion queue_io;
uint32_t frame_hi;
uint32_t fw_state;
uint32_t fw_sge;
uint32_t fw_cmds;
uint32_t flags;
uint32_t fw_luns;
uint32_t intr_mask;
uint32_t doorbell;
uint32_t busy;
uint32_t diag;
uint32_t adp_reset;
OnOffAuto msi;
OnOffAuto msix;
MegasasCmd *event_cmd;
uint16_t event_locale;
int event_class;
uint32_t event_count;
uint32_t shutdown_event;
uint32_t boot_event;
uint64_t sas_addr;
char *hba_serial;
uint64_t reply_queue_pa;
void *reply_queue;
uint16_t reply_queue_len;
uint16_t reply_queue_head;
uint16_t reply_queue_tail;
uint64_t consumer_pa;
uint64_t producer_pa;
MegasasCmd frames[MEGASAS_MAX_FRAMES];
DECLARE_BITMAP(frame_map, MEGASAS_MAX_FRAMES);
SCSIBus bus;
};
typedef struct MegasasState MegasasState;
struct MegasasBaseClass {
PCIDeviceClass parent_class;
const char *product_name;
const char *product_version;
int mmio_bar;
int ioport_bar;
int osts;
};
typedef struct MegasasBaseClass MegasasBaseClass;
#define TYPE_MEGASAS_BASE "megasas-base"
#define TYPE_MEGASAS_GEN1 "megasas"
#define TYPE_MEGASAS_GEN2 "megasas-gen2"
DECLARE_OBJ_CHECKERS(MegasasState, MegasasBaseClass,
MEGASAS, TYPE_MEGASAS_BASE)
#define MEGASAS_INTR_DISABLED_MASK 0xFFFFFFFF
static bool megasas_intr_enabled(MegasasState *s)
{
if ((s->intr_mask & MEGASAS_INTR_DISABLED_MASK) !=
MEGASAS_INTR_DISABLED_MASK) {
return true;
}
return false;
}
static bool megasas_use_queue64(MegasasState *s)
{
return s->flags & MEGASAS_MASK_USE_QUEUE64;
}
static bool megasas_use_msix(MegasasState *s)
{
return s->msix != ON_OFF_AUTO_OFF;
}
static bool megasas_is_jbod(MegasasState *s)
{
return s->flags & MEGASAS_MASK_USE_JBOD;
}
static void megasas_frame_set_cmd_status(MegasasState *s,
unsigned long frame, uint8_t v)
{
PCIDevice *pci = &s->parent_obj;
stb_pci_dma(pci, frame + offsetof(struct mfi_frame_header, cmd_status), v);
}
static void megasas_frame_set_scsi_status(MegasasState *s,
unsigned long frame, uint8_t v)
{
PCIDevice *pci = &s->parent_obj;
stb_pci_dma(pci, frame + offsetof(struct mfi_frame_header, scsi_status), v);
}
static inline const char *mfi_frame_desc(unsigned int cmd)
{
static const char *mfi_frame_descs[] = {
"MFI init", "LD Read", "LD Write", "LD SCSI", "PD SCSI",
"MFI Doorbell", "MFI Abort", "MFI SMP", "MFI Stop"
};
if (cmd < ARRAY_SIZE(mfi_frame_descs)) {
return mfi_frame_descs[cmd];
}
return "Unknown";
}
/*
* Context is considered opaque, but the HBA firmware is running
* in little endian mode. So convert it to little endian, too.
*/
static uint64_t megasas_frame_get_context(MegasasState *s,
unsigned long frame)
{
PCIDevice *pci = &s->parent_obj;
return ldq_le_pci_dma(pci, frame + offsetof(struct mfi_frame_header, context));
}
static bool megasas_frame_is_ieee_sgl(MegasasCmd *cmd)
{
return cmd->flags & MFI_FRAME_IEEE_SGL;
}
static bool megasas_frame_is_sgl64(MegasasCmd *cmd)
{
return cmd->flags & MFI_FRAME_SGL64;
}
static bool megasas_frame_is_sense64(MegasasCmd *cmd)
{
return cmd->flags & MFI_FRAME_SENSE64;
}
static uint64_t megasas_sgl_get_addr(MegasasCmd *cmd,
union mfi_sgl *sgl)
{
uint64_t addr;
if (megasas_frame_is_ieee_sgl(cmd)) {
addr = le64_to_cpu(sgl->sg_skinny->addr);
} else if (megasas_frame_is_sgl64(cmd)) {
addr = le64_to_cpu(sgl->sg64->addr);
} else {
addr = le32_to_cpu(sgl->sg32->addr);
}
return addr;
}
static uint32_t megasas_sgl_get_len(MegasasCmd *cmd,
union mfi_sgl *sgl)
{
uint32_t len;
if (megasas_frame_is_ieee_sgl(cmd)) {
len = le32_to_cpu(sgl->sg_skinny->len);
} else if (megasas_frame_is_sgl64(cmd)) {
len = le32_to_cpu(sgl->sg64->len);
} else {
len = le32_to_cpu(sgl->sg32->len);
}
return len;
}
static union mfi_sgl *megasas_sgl_next(MegasasCmd *cmd,
union mfi_sgl *sgl)
{
uint8_t *next = (uint8_t *)sgl;
if (megasas_frame_is_ieee_sgl(cmd)) {
next += sizeof(struct mfi_sg_skinny);
} else if (megasas_frame_is_sgl64(cmd)) {
next += sizeof(struct mfi_sg64);
} else {
next += sizeof(struct mfi_sg32);
}
if (next >= (uint8_t *)cmd->frame + cmd->pa_size) {
return NULL;
}
return (union mfi_sgl *)next;
}
static void megasas_soft_reset(MegasasState *s);
static int megasas_map_sgl(MegasasState *s, MegasasCmd *cmd, union mfi_sgl *sgl)
{
int i;
int iov_count = 0;
size_t iov_size = 0;
cmd->flags = le16_to_cpu(cmd->frame->header.flags);
iov_count = cmd->frame->header.sge_count;
if (!iov_count || iov_count > MEGASAS_MAX_SGE) {
trace_megasas_iovec_sgl_overflow(cmd->index, iov_count,
MEGASAS_MAX_SGE);
return -1;
}
pci_dma_sglist_init(&cmd->qsg, PCI_DEVICE(s), iov_count);
for (i = 0; i < iov_count; i++) {
dma_addr_t iov_pa, iov_size_p;
if (!sgl) {
trace_megasas_iovec_sgl_underflow(cmd->index, i);
goto unmap;
}
iov_pa = megasas_sgl_get_addr(cmd, sgl);
iov_size_p = megasas_sgl_get_len(cmd, sgl);
if (!iov_pa || !iov_size_p) {
trace_megasas_iovec_sgl_invalid(cmd->index, i,
iov_pa, iov_size_p);
goto unmap;
}
qemu_sglist_add(&cmd->qsg, iov_pa, iov_size_p);
sgl = megasas_sgl_next(cmd, sgl);
iov_size += (size_t)iov_size_p;
}
if (cmd->iov_size > iov_size) {
trace_megasas_iovec_overflow(cmd->index, iov_size, cmd->iov_size);
} else if (cmd->iov_size < iov_size) {
trace_megasas_iovec_underflow(cmd->index, iov_size, cmd->iov_size);
}
cmd->iov_offset = 0;
return 0;
unmap:
qemu_sglist_destroy(&cmd->qsg);
return -1;
}
/*
* passthrough sense and io sense are at the same offset
*/
static int megasas_build_sense(MegasasCmd *cmd, uint8_t *sense_ptr,
uint8_t sense_len)
{
PCIDevice *pcid = PCI_DEVICE(cmd->state);
uint32_t pa_hi = 0, pa_lo;
hwaddr pa;
int frame_sense_len;
frame_sense_len = cmd->frame->header.sense_len;
if (sense_len > frame_sense_len) {
sense_len = frame_sense_len;
}
if (sense_len) {
pa_lo = le32_to_cpu(cmd->frame->pass.sense_addr_lo);
if (megasas_frame_is_sense64(cmd)) {
pa_hi = le32_to_cpu(cmd->frame->pass.sense_addr_hi);
}
pa = ((uint64_t) pa_hi << 32) | pa_lo;
pci_dma_write(pcid, pa, sense_ptr, sense_len);
cmd->frame->header.sense_len = sense_len;
}
return sense_len;
}
static void megasas_write_sense(MegasasCmd *cmd, SCSISense sense)
{
uint8_t sense_buf[SCSI_SENSE_BUF_SIZE];
uint8_t sense_len = 18;
memset(sense_buf, 0, sense_len);
sense_buf[0] = 0xf0;
sense_buf[2] = sense.key;
sense_buf[7] = 10;
sense_buf[12] = sense.asc;
sense_buf[13] = sense.ascq;
megasas_build_sense(cmd, sense_buf, sense_len);
}
static void megasas_copy_sense(MegasasCmd *cmd)
{
uint8_t sense_buf[SCSI_SENSE_BUF_SIZE];
uint8_t sense_len;
sense_len = scsi_req_get_sense(cmd->req, sense_buf,
SCSI_SENSE_BUF_SIZE);
megasas_build_sense(cmd, sense_buf, sense_len);
}
/*
* Format an INQUIRY CDB
*/
static int megasas_setup_inquiry(uint8_t *cdb, int pg, int len)
{
memset(cdb, 0, 6);
cdb[0] = INQUIRY;
if (pg > 0) {
cdb[1] = 0x1;
cdb[2] = pg;
}
cdb[3] = (len >> 8) & 0xff;
cdb[4] = (len & 0xff);
return len;
}
/*
* Encode lba and len into a READ_16/WRITE_16 CDB
*/
static void megasas_encode_lba(uint8_t *cdb, uint64_t lba,
uint32_t len, bool is_write)
{
memset(cdb, 0x0, 16);
if (is_write) {
cdb[0] = WRITE_16;
} else {
cdb[0] = READ_16;
}
cdb[2] = (lba >> 56) & 0xff;
cdb[3] = (lba >> 48) & 0xff;
cdb[4] = (lba >> 40) & 0xff;
cdb[5] = (lba >> 32) & 0xff;
cdb[6] = (lba >> 24) & 0xff;
cdb[7] = (lba >> 16) & 0xff;
cdb[8] = (lba >> 8) & 0xff;
cdb[9] = (lba) & 0xff;
cdb[10] = (len >> 24) & 0xff;
cdb[11] = (len >> 16) & 0xff;
cdb[12] = (len >> 8) & 0xff;
cdb[13] = (len) & 0xff;
}
/*
* Utility functions
*/
static uint64_t megasas_fw_time(void)
{
struct tm curtime;
qemu_get_timedate(&curtime, 0);
return ((uint64_t)curtime.tm_sec & 0xff) << 48 |
((uint64_t)curtime.tm_min & 0xff) << 40 |
((uint64_t)curtime.tm_hour & 0xff) << 32 |
((uint64_t)curtime.tm_mday & 0xff) << 24 |
((uint64_t)curtime.tm_mon & 0xff) << 16 |
((uint64_t)(curtime.tm_year + 1900) & 0xffff);
}
/*
* Default disk sata address
* 0x1221 is the magic number as
* present in real hardware,
* so use it here, too.
*/
static uint64_t megasas_get_sata_addr(uint16_t id)
{
uint64_t addr = (0x1221ULL << 48);
return addr | ((uint64_t)id << 24);
}
/*
* Frame handling
*/
static int megasas_next_index(MegasasState *s, int index, int limit)
{
index++;
if (index == limit) {
index = 0;
}
return index;
}
static MegasasCmd *megasas_lookup_frame(MegasasState *s,
hwaddr frame)
{
MegasasCmd *cmd = NULL;
int num = 0, index;
index = s->reply_queue_head;
while (num < s->fw_cmds && index < MEGASAS_MAX_FRAMES) {
if (s->frames[index].pa && s->frames[index].pa == frame) {
cmd = &s->frames[index];
break;
}
index = megasas_next_index(s, index, s->fw_cmds);
num++;
}
return cmd;
}
static void megasas_unmap_frame(MegasasState *s, MegasasCmd *cmd)
{
PCIDevice *p = PCI_DEVICE(s);
if (cmd->pa_size) {
pci_dma_unmap(p, cmd->frame, cmd->pa_size, 0, 0);
}
cmd->frame = NULL;
cmd->pa = 0;
cmd->pa_size = 0;
qemu_sglist_destroy(&cmd->qsg);
clear_bit(cmd->index, s->frame_map);
}
/*
* This absolutely needs to be locked if
* qemu ever goes multithreaded.
*/
static MegasasCmd *megasas_enqueue_frame(MegasasState *s,
hwaddr frame, uint64_t context, int count)
{
PCIDevice *pcid = PCI_DEVICE(s);
MegasasCmd *cmd = NULL;
int frame_size = MEGASAS_MAX_SGE * sizeof(union mfi_sgl);
hwaddr frame_size_p = frame_size;
unsigned long index;
index = 0;
while (index < s->fw_cmds) {
index = find_next_zero_bit(s->frame_map, s->fw_cmds, index);
if (!s->frames[index].pa)
break;
/* Busy frame found */
trace_megasas_qf_mapped(index);
}
if (index >= s->fw_cmds) {
/* All frames busy */
trace_megasas_qf_busy(frame);
return NULL;
}
cmd = &s->frames[index];
set_bit(index, s->frame_map);
trace_megasas_qf_new(index, frame);
cmd->pa = frame;
/* Map all possible frames */
cmd->frame = pci_dma_map(pcid, frame, &frame_size_p, 0);
if (!cmd->frame || frame_size_p != frame_size) {
trace_megasas_qf_map_failed(cmd->index, (unsigned long)frame);
if (cmd->frame) {
megasas_unmap_frame(s, cmd);
}
s->event_count++;
return NULL;
}
cmd->pa_size = frame_size_p;
cmd->context = context;
if (!megasas_use_queue64(s)) {
cmd->context &= (uint64_t)0xFFFFFFFF;
}
cmd->count = count;
cmd->dcmd_opcode = -1;
s->busy++;
if (s->consumer_pa) {
s->reply_queue_tail = ldl_le_pci_dma(pcid, s->consumer_pa);
}
trace_megasas_qf_enqueue(cmd->index, cmd->count, cmd->context,
s->reply_queue_head, s->reply_queue_tail, s->busy);
return cmd;
}
static void megasas_complete_frame(MegasasState *s, uint64_t context)
{
PCIDevice *pci_dev = PCI_DEVICE(s);
int tail, queue_offset;
/* Decrement busy count */
s->busy--;
if (s->reply_queue_pa) {
/*
* Put command on the reply queue.
* Context is opaque, but emulation is running in
* little endian. So convert it.
*/
if (megasas_use_queue64(s)) {
queue_offset = s->reply_queue_head * sizeof(uint64_t);
stq_le_pci_dma(pci_dev, s->reply_queue_pa + queue_offset, context);
} else {
queue_offset = s->reply_queue_head * sizeof(uint32_t);
stl_le_pci_dma(pci_dev, s->reply_queue_pa + queue_offset, context);
}
s->reply_queue_tail = ldl_le_pci_dma(pci_dev, s->consumer_pa);
trace_megasas_qf_complete(context, s->reply_queue_head,
s->reply_queue_tail, s->busy);
}
if (megasas_intr_enabled(s)) {
/* Update reply queue pointer */
s->reply_queue_tail = ldl_le_pci_dma(pci_dev, s->consumer_pa);
tail = s->reply_queue_head;
s->reply_queue_head = megasas_next_index(s, tail, s->fw_cmds);
trace_megasas_qf_update(s->reply_queue_head, s->reply_queue_tail,
s->busy);
stl_le_pci_dma(pci_dev, s->producer_pa, s->reply_queue_head);
/* Notify HBA */
if (msix_enabled(pci_dev)) {
trace_megasas_msix_raise(0);
msix_notify(pci_dev, 0);
} else if (msi_enabled(pci_dev)) {
trace_megasas_msi_raise(0);
msi_notify(pci_dev, 0);
} else {
s->doorbell++;
if (s->doorbell == 1) {
trace_megasas_irq_raise();
pci_irq_assert(pci_dev);
}
}
} else {
trace_megasas_qf_complete_noirq(context);
}
}
static void megasas_complete_command(MegasasCmd *cmd)
{
cmd->iov_size = 0;
cmd->iov_offset = 0;
cmd->req->hba_private = NULL;
scsi_req_unref(cmd->req);
cmd->req = NULL;
megasas_unmap_frame(cmd->state, cmd);
megasas_complete_frame(cmd->state, cmd->context);
}
static void megasas_reset_frames(MegasasState *s)
{
int i;
MegasasCmd *cmd;
for (i = 0; i < s->fw_cmds; i++) {
cmd = &s->frames[i];
if (cmd->pa) {
megasas_unmap_frame(s, cmd);
}
}
bitmap_zero(s->frame_map, MEGASAS_MAX_FRAMES);
}
static void megasas_abort_command(MegasasCmd *cmd)
{
/* Never abort internal commands. */
if (cmd->dcmd_opcode != -1) {
return;
}
if (cmd->req != NULL) {
scsi_req_cancel(cmd->req);
}
}
static int megasas_init_firmware(MegasasState *s, MegasasCmd *cmd)
{
PCIDevice *pcid = PCI_DEVICE(s);
uint32_t pa_hi, pa_lo;
hwaddr iq_pa, initq_size = sizeof(struct mfi_init_qinfo);
struct mfi_init_qinfo *initq = NULL;
uint32_t flags;
int ret = MFI_STAT_OK;
if (s->reply_queue_pa) {
trace_megasas_initq_mapped(s->reply_queue_pa);
goto out;
}
pa_lo = le32_to_cpu(cmd->frame->init.qinfo_new_addr_lo);
pa_hi = le32_to_cpu(cmd->frame->init.qinfo_new_addr_hi);
iq_pa = (((uint64_t) pa_hi << 32) | pa_lo);
trace_megasas_init_firmware((uint64_t)iq_pa);
initq = pci_dma_map(pcid, iq_pa, &initq_size, 0);
if (!initq || initq_size != sizeof(*initq)) {
trace_megasas_initq_map_failed(cmd->index);
s->event_count++;
ret = MFI_STAT_MEMORY_NOT_AVAILABLE;
goto out;
}
s->reply_queue_len = le32_to_cpu(initq->rq_entries) & 0xFFFF;
if (s->reply_queue_len > s->fw_cmds) {
trace_megasas_initq_mismatch(s->reply_queue_len, s->fw_cmds);
s->event_count++;
ret = MFI_STAT_INVALID_PARAMETER;
goto out;
}
pa_lo = le32_to_cpu(initq->rq_addr_lo);
pa_hi = le32_to_cpu(initq->rq_addr_hi);
s->reply_queue_pa = ((uint64_t) pa_hi << 32) | pa_lo;
pa_lo = le32_to_cpu(initq->ci_addr_lo);
pa_hi = le32_to_cpu(initq->ci_addr_hi);
s->consumer_pa = ((uint64_t) pa_hi << 32) | pa_lo;
pa_lo = le32_to_cpu(initq->pi_addr_lo);
pa_hi = le32_to_cpu(initq->pi_addr_hi);
s->producer_pa = ((uint64_t) pa_hi << 32) | pa_lo;
s->reply_queue_head = ldl_le_pci_dma(pcid, s->producer_pa);
s->reply_queue_head %= MEGASAS_MAX_FRAMES;
s->reply_queue_tail = ldl_le_pci_dma(pcid, s->consumer_pa);
s->reply_queue_tail %= MEGASAS_MAX_FRAMES;
flags = le32_to_cpu(initq->flags);
if (flags & MFI_QUEUE_FLAG_CONTEXT64) {
s->flags |= MEGASAS_MASK_USE_QUEUE64;
}
trace_megasas_init_queue((unsigned long)s->reply_queue_pa,
s->reply_queue_len, s->reply_queue_head,
s->reply_queue_tail, flags);
megasas_reset_frames(s);
s->fw_state = MFI_FWSTATE_OPERATIONAL;
out:
if (initq) {
pci_dma_unmap(pcid, initq, initq_size, 0, 0);
}
return ret;
}
static int megasas_map_dcmd(MegasasState *s, MegasasCmd *cmd)
{
dma_addr_t iov_pa, iov_size;
int iov_count;
cmd->flags = le16_to_cpu(cmd->frame->header.flags);
iov_count = cmd->frame->header.sge_count;
if (!iov_count) {
trace_megasas_dcmd_zero_sge(cmd->index);
cmd->iov_size = 0;
return 0;
} else if (iov_count > 1) {
trace_megasas_dcmd_invalid_sge(cmd->index, iov_count);
cmd->iov_size = 0;
return -EINVAL;
}
iov_pa = megasas_sgl_get_addr(cmd, &cmd->frame->dcmd.sgl);
iov_size = megasas_sgl_get_len(cmd, &cmd->frame->dcmd.sgl);
pci_dma_sglist_init(&cmd->qsg, PCI_DEVICE(s), 1);
qemu_sglist_add(&cmd->qsg, iov_pa, iov_size);
cmd->iov_size = iov_size;
return 0;
}
static void megasas_finish_dcmd(MegasasCmd *cmd, uint32_t iov_size)
{
trace_megasas_finish_dcmd(cmd->index, iov_size);
if (iov_size > cmd->iov_size) {
if (megasas_frame_is_ieee_sgl(cmd)) {
cmd->frame->dcmd.sgl.sg_skinny->len = cpu_to_le32(iov_size);
} else if (megasas_frame_is_sgl64(cmd)) {
cmd->frame->dcmd.sgl.sg64->len = cpu_to_le32(iov_size);
} else {
cmd->frame->dcmd.sgl.sg32->len = cpu_to_le32(iov_size);
}
}
}
static int megasas_ctrl_get_info(MegasasState *s, MegasasCmd *cmd)
{
PCIDevice *pci_dev = PCI_DEVICE(s);
PCIDeviceClass *pci_class = PCI_DEVICE_GET_CLASS(pci_dev);
MegasasBaseClass *base_class = MEGASAS_GET_CLASS(s);
struct mfi_ctrl_info info;
size_t dcmd_size = sizeof(info);
BusChild *kid;
int num_pd_disks = 0;
memset(&info, 0x0, dcmd_size);
if (cmd->iov_size < dcmd_size) {
trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
dcmd_size);
return MFI_STAT_INVALID_PARAMETER;
}
info.pci.vendor = cpu_to_le16(pci_class->vendor_id);
info.pci.device = cpu_to_le16(pci_class->device_id);
info.pci.subvendor = cpu_to_le16(pci_class->subsystem_vendor_id);
info.pci.subdevice = cpu_to_le16(pci_class->subsystem_id);
/*
* For some reason the firmware supports
* only up to 8 device ports.
* Despite supporting a far larger number
* of devices for the physical devices.
* So just display the first 8 devices
* in the device port list, independent
* of how many logical devices are actually
* present.
*/
info.host.type = MFI_INFO_HOST_PCIE;
info.device.type = MFI_INFO_DEV_SAS3G;
info.device.port_count = 8;
QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
SCSIDevice *sdev = SCSI_DEVICE(kid->child);
uint16_t pd_id;
if (num_pd_disks < 8) {
pd_id = ((sdev->id & 0xFF) << 8) | (sdev->lun & 0xFF);
info.device.port_addr[num_pd_disks] =
cpu_to_le64(megasas_get_sata_addr(pd_id));
}
num_pd_disks++;
}
memcpy(info.product_name, base_class->product_name, 24);
snprintf(info.serial_number, 32, "%s", s->hba_serial);
snprintf(info.package_version, 0x60, "%s-QEMU", qemu_hw_version());
memcpy(info.image_component[0].name, "APP", 3);
snprintf(info.image_component[0].version, 10, "%s-QEMU",
base_class->product_version);
memcpy(info.image_component[0].build_date, "Apr 1 2014", 11);
memcpy(info.image_component[0].build_time, "12:34:56", 8);
info.image_component_count = 1;
if (pci_dev->has_rom) {
uint8_t biosver[32];
uint8_t *ptr;
ptr = memory_region_get_ram_ptr(&pci_dev->rom);
memcpy(biosver, ptr + 0x41, 31);
biosver[31] = 0;
memcpy(info.image_component[1].name, "BIOS", 4);
memcpy(info.image_component[1].version, biosver,
strlen((const char *)biosver));
info.image_component_count++;
}
info.current_fw_time = cpu_to_le32(megasas_fw_time());
info.max_arms = 32;
info.max_spans = 8;
info.max_arrays = MEGASAS_MAX_ARRAYS;
info.max_lds = MFI_MAX_LD;
info.max_cmds = cpu_to_le16(s->fw_cmds);
info.max_sg_elements = cpu_to_le16(s->fw_sge);
info.max_request_size = cpu_to_le32(MEGASAS_MAX_SECTORS);
if (!megasas_is_jbod(s))
info.lds_present = cpu_to_le16(num_pd_disks);
info.pd_present = cpu_to_le16(num_pd_disks);
info.pd_disks_present = cpu_to_le16(num_pd_disks);
info.hw_present = cpu_to_le32(MFI_INFO_HW_NVRAM |
MFI_INFO_HW_MEM |
MFI_INFO_HW_FLASH);
info.memory_size = cpu_to_le16(512);
info.nvram_size = cpu_to_le16(32);
info.flash_size = cpu_to_le16(16);
info.raid_levels = cpu_to_le32(MFI_INFO_RAID_0);
info.adapter_ops = cpu_to_le32(MFI_INFO_AOPS_RBLD_RATE |
MFI_INFO_AOPS_SELF_DIAGNOSTIC |
MFI_INFO_AOPS_MIXED_ARRAY);
info.ld_ops = cpu_to_le32(MFI_INFO_LDOPS_DISK_CACHE_POLICY |
MFI_INFO_LDOPS_ACCESS_POLICY |
MFI_INFO_LDOPS_IO_POLICY |
MFI_INFO_LDOPS_WRITE_POLICY |
MFI_INFO_LDOPS_READ_POLICY);
info.max_strips_per_io = cpu_to_le16(s->fw_sge);
info.stripe_sz_ops.min = 3;
info.stripe_sz_ops.max = ctz32(MEGASAS_MAX_SECTORS + 1);
info.properties.pred_fail_poll_interval = cpu_to_le16(300);
info.properties.intr_throttle_cnt = cpu_to_le16(16);
info.properties.intr_throttle_timeout = cpu_to_le16(50);
info.properties.rebuild_rate = 30;
info.properties.patrol_read_rate = 30;
info.properties.bgi_rate = 30;
info.properties.cc_rate = 30;
info.properties.recon_rate = 30;
info.properties.cache_flush_interval = 4;
info.properties.spinup_drv_cnt = 2;
info.properties.spinup_delay = 6;
info.properties.ecc_bucket_size = 15;
info.properties.ecc_bucket_leak_rate = cpu_to_le16(1440);
info.properties.expose_encl_devices = 1;
info.properties.OnOffProperties = cpu_to_le32(MFI_CTRL_PROP_EnableJBOD);
info.pd_ops = cpu_to_le32(MFI_INFO_PDOPS_FORCE_ONLINE |
MFI_INFO_PDOPS_FORCE_OFFLINE);
info.pd_mix_support = cpu_to_le32(MFI_INFO_PDMIX_SAS |
MFI_INFO_PDMIX_SATA |
MFI_INFO_PDMIX_LD);
cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg);
return MFI_STAT_OK;
}
static int megasas_mfc_get_defaults(MegasasState *s, MegasasCmd *cmd)
{
struct mfi_defaults info;
size_t dcmd_size = sizeof(struct mfi_defaults);
memset(&info, 0x0, dcmd_size);
if (cmd->iov_size < dcmd_size) {
trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
dcmd_size);
return MFI_STAT_INVALID_PARAMETER;
}
info.sas_addr = cpu_to_le64(s->sas_addr);
info.stripe_size = 3;
info.flush_time = 4;
info.background_rate = 30;
info.allow_mix_in_enclosure = 1;
info.allow_mix_in_ld = 1;
info.direct_pd_mapping = 1;
/* Enable for BIOS support */
info.bios_enumerate_lds = 1;
info.disable_ctrl_r = 1;
info.expose_enclosure_devices = 1;
info.disable_preboot_cli = 1;
info.cluster_disable = 1;
cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg);
return MFI_STAT_OK;
}
static int megasas_dcmd_get_bios_info(MegasasState *s, MegasasCmd *cmd)
{
struct mfi_bios_data info;
size_t dcmd_size = sizeof(info);
memset(&info, 0x0, dcmd_size);
if (cmd->iov_size < dcmd_size) {
trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
dcmd_size);
return MFI_STAT_INVALID_PARAMETER;
}
info.continue_on_error = 1;
info.verbose = 1;
if (megasas_is_jbod(s)) {
info.expose_all_drives = 1;
}
cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg);
return MFI_STAT_OK;
}
static int megasas_dcmd_get_fw_time(MegasasState *s, MegasasCmd *cmd)
{
uint64_t fw_time;
size_t dcmd_size = sizeof(fw_time);
fw_time = cpu_to_le64(megasas_fw_time());
cmd->iov_size -= dma_buf_read((uint8_t *)&fw_time, dcmd_size, &cmd->qsg);
return MFI_STAT_OK;
}
static int megasas_dcmd_set_fw_time(MegasasState *s, MegasasCmd *cmd)
{
uint64_t fw_time;
/* This is a dummy; setting of firmware time is not allowed */
memcpy(&fw_time, cmd->frame->dcmd.mbox, sizeof(fw_time));
trace_megasas_dcmd_set_fw_time(cmd->index, fw_time);
fw_time = cpu_to_le64(megasas_fw_time());
return MFI_STAT_OK;
}
static int megasas_event_info(MegasasState *s, MegasasCmd *cmd)
{
struct mfi_evt_log_state info;
size_t dcmd_size = sizeof(info);
memset(&info, 0, dcmd_size);
info.newest_seq_num = cpu_to_le32(s->event_count);
info.shutdown_seq_num = cpu_to_le32(s->shutdown_event);
info.boot_seq_num = cpu_to_le32(s->boot_event);
cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg);
return MFI_STAT_OK;
}
static int megasas_event_wait(MegasasState *s, MegasasCmd *cmd)
{
union mfi_evt event;
if (cmd->iov_size < sizeof(struct mfi_evt_detail)) {
trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
sizeof(struct mfi_evt_detail));
return MFI_STAT_INVALID_PARAMETER;
}
s->event_count = cpu_to_le32(cmd->frame->dcmd.mbox[0]);
event.word = cpu_to_le32(cmd->frame->dcmd.mbox[4]);
s->event_locale = event.members.locale;
s->event_class = event.members.class;
s->event_cmd = cmd;
/* Decrease busy count; event frame doesn't count here */
s->busy--;
cmd->iov_size = sizeof(struct mfi_evt_detail);
return MFI_STAT_INVALID_STATUS;
}
static int megasas_dcmd_pd_get_list(MegasasState *s, MegasasCmd *cmd)
{
struct mfi_pd_list info;
size_t dcmd_size = sizeof(info);
BusChild *kid;
uint32_t offset, dcmd_limit, num_pd_disks = 0, max_pd_disks;
memset(&info, 0, dcmd_size);
offset = 8;
dcmd_limit = offset + sizeof(struct mfi_pd_address);
if (cmd->iov_size < dcmd_limit) {
trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
dcmd_limit);
return MFI_STAT_INVALID_PARAMETER;
}
max_pd_disks = (cmd->iov_size - offset) / sizeof(struct mfi_pd_address);
if (max_pd_disks > MFI_MAX_SYS_PDS) {
max_pd_disks = MFI_MAX_SYS_PDS;
}
QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
SCSIDevice *sdev = SCSI_DEVICE(kid->child);
uint16_t pd_id;
if (num_pd_disks >= max_pd_disks)
break;
pd_id = ((sdev->id & 0xFF) << 8) | (sdev->lun & 0xFF);
info.addr[num_pd_disks].device_id = cpu_to_le16(pd_id);
info.addr[num_pd_disks].encl_device_id = 0xFFFF;
info.addr[num_pd_disks].encl_index = 0;
info.addr[num_pd_disks].slot_number = sdev->id & 0xFF;
info.addr[num_pd_disks].scsi_dev_type = sdev->type;
info.addr[num_pd_disks].connect_port_bitmap = 0x1;
info.addr[num_pd_disks].sas_addr[0] =
cpu_to_le64(megasas_get_sata_addr(pd_id));
num_pd_disks++;
offset += sizeof(struct mfi_pd_address);
}
trace_megasas_dcmd_pd_get_list(cmd->index, num_pd_disks,
max_pd_disks, offset);
info.size = cpu_to_le32(offset);
info.count = cpu_to_le32(num_pd_disks);
cmd->iov_size -= dma_buf_read((uint8_t *)&info, offset, &cmd->qsg);
return MFI_STAT_OK;
}
static int megasas_dcmd_pd_list_query(MegasasState *s, MegasasCmd *cmd)
{
uint16_t flags;
/* mbox0 contains flags */
flags = le16_to_cpu(cmd->frame->dcmd.mbox[0]);
trace_megasas_dcmd_pd_list_query(cmd->index, flags);
if (flags == MR_PD_QUERY_TYPE_ALL ||
megasas_is_jbod(s)) {
return megasas_dcmd_pd_get_list(s, cmd);
}
return MFI_STAT_OK;
}
static int megasas_pd_get_info_submit(SCSIDevice *sdev, int lun,
MegasasCmd *cmd)
{
struct mfi_pd_info *info = cmd->iov_buf;
size_t dcmd_size = sizeof(struct mfi_pd_info);
uint64_t pd_size;
uint16_t pd_id = ((sdev->id & 0xFF) << 8) | (lun & 0xFF);
uint8_t cmdbuf[6];
size_t len, resid;
if (!cmd->iov_buf) {
cmd->iov_buf = g_malloc0(dcmd_size);
info = cmd->iov_buf;
info->inquiry_data[0] = 0x7f; /* Force PQual 0x3, PType 0x1f */
info->vpd_page83[0] = 0x7f;
megasas_setup_inquiry(cmdbuf, 0, sizeof(info->inquiry_data));
cmd->req = scsi_req_new(sdev, cmd->index, lun, cmdbuf, cmd);
if (!cmd->req) {
trace_megasas_dcmd_req_alloc_failed(cmd->index,
"PD get info std inquiry");
g_free(cmd->iov_buf);
cmd->iov_buf = NULL;
return MFI_STAT_FLASH_ALLOC_FAIL;
}
trace_megasas_dcmd_internal_submit(cmd->index,
"PD get info std inquiry", lun);
len = scsi_req_enqueue(cmd->req);
if (len > 0) {
cmd->iov_size = len;
scsi_req_continue(cmd->req);
}
return MFI_STAT_INVALID_STATUS;
} else if (info->inquiry_data[0] != 0x7f && info->vpd_page83[0] == 0x7f) {
megasas_setup_inquiry(cmdbuf, 0x83, sizeof(info->vpd_page83));
cmd->req = scsi_req_new(sdev, cmd->index, lun, cmdbuf, cmd);
if (!cmd->req) {
trace_megasas_dcmd_req_alloc_failed(cmd->index,
"PD get info vpd inquiry");
return MFI_STAT_FLASH_ALLOC_FAIL;
}
trace_megasas_dcmd_internal_submit(cmd->index,
"PD get info vpd inquiry", lun);
len = scsi_req_enqueue(cmd->req);
if (len > 0) {
cmd->iov_size = len;
scsi_req_continue(cmd->req);
}
return MFI_STAT_INVALID_STATUS;
}
/* Finished, set FW state */
if ((info->inquiry_data[0] >> 5) == 0) {
if (megasas_is_jbod(cmd->state)) {
info->fw_state = cpu_to_le16(MFI_PD_STATE_SYSTEM);
} else {
info->fw_state = cpu_to_le16(MFI_PD_STATE_ONLINE);
}
} else {
info->fw_state = cpu_to_le16(MFI_PD_STATE_OFFLINE);
}
info->ref.v.device_id = cpu_to_le16(pd_id);
info->state.ddf.pd_type = cpu_to_le16(MFI_PD_DDF_TYPE_IN_VD|
MFI_PD_DDF_TYPE_INTF_SAS);
blk_get_geometry(sdev->conf.blk, &pd_size);
info->raw_size = cpu_to_le64(pd_size);
info->non_coerced_size = cpu_to_le64(pd_size);
info->coerced_size = cpu_to_le64(pd_size);
info->encl_device_id = 0xFFFF;
info->slot_number = (sdev->id & 0xFF);
info->path_info.count = 1;
info->path_info.sas_addr[0] =
cpu_to_le64(megasas_get_sata_addr(pd_id));
info->connected_port_bitmap = 0x1;
info->device_speed = 1;
info->link_speed = 1;
resid = dma_buf_read(cmd->iov_buf, dcmd_size, &cmd->qsg);
g_free(cmd->iov_buf);
cmd->iov_size = dcmd_size - resid;
cmd->iov_buf = NULL;
return MFI_STAT_OK;
}
static int megasas_dcmd_pd_get_info(MegasasState *s, MegasasCmd *cmd)
{
size_t dcmd_size = sizeof(struct mfi_pd_info);
uint16_t pd_id;
uint8_t target_id, lun_id;
SCSIDevice *sdev = NULL;
int retval = MFI_STAT_DEVICE_NOT_FOUND;
if (cmd->iov_size < dcmd_size) {
return MFI_STAT_INVALID_PARAMETER;
}
/* mbox0 has the ID */
pd_id = le16_to_cpu(cmd->frame->dcmd.mbox[0]);
target_id = (pd_id >> 8) & 0xFF;
lun_id = pd_id & 0xFF;
sdev = scsi_device_find(&s->bus, 0, target_id, lun_id);
trace_megasas_dcmd_pd_get_info(cmd->index, pd_id);
if (sdev) {
/* Submit inquiry */
retval = megasas_pd_get_info_submit(sdev, pd_id, cmd);
}
return retval;
}
static int megasas_dcmd_ld_get_list(MegasasState *s, MegasasCmd *cmd)
{
struct mfi_ld_list info;
size_t dcmd_size = sizeof(info), resid;
uint32_t num_ld_disks = 0, max_ld_disks;
uint64_t ld_size;
BusChild *kid;
memset(&info, 0, dcmd_size);
if (cmd->iov_size > dcmd_size) {
trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
dcmd_size);
return MFI_STAT_INVALID_PARAMETER;
}
max_ld_disks = (cmd->iov_size - 8) / 16;
if (megasas_is_jbod(s)) {
max_ld_disks = 0;
}
if (max_ld_disks > MFI_MAX_LD) {
max_ld_disks = MFI_MAX_LD;
}
QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
SCSIDevice *sdev = SCSI_DEVICE(kid->child);
if (num_ld_disks >= max_ld_disks) {
break;
}
/* Logical device size is in blocks */
blk_get_geometry(sdev->conf.blk, &ld_size);
info.ld_list[num_ld_disks].ld.v.target_id = sdev->id;
info.ld_list[num_ld_disks].state = MFI_LD_STATE_OPTIMAL;
info.ld_list[num_ld_disks].size = cpu_to_le64(ld_size);
num_ld_disks++;
}
info.ld_count = cpu_to_le32(num_ld_disks);
trace_megasas_dcmd_ld_get_list(cmd->index, num_ld_disks, max_ld_disks);
resid = dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg);
cmd->iov_size = dcmd_size - resid;
return MFI_STAT_OK;
}
static int megasas_dcmd_ld_list_query(MegasasState *s, MegasasCmd *cmd)
{
uint16_t flags;
struct mfi_ld_targetid_list info;
size_t dcmd_size = sizeof(info), resid;
uint32_t num_ld_disks = 0, max_ld_disks = s->fw_luns;
BusChild *kid;
/* mbox0 contains flags */
flags = le16_to_cpu(cmd->frame->dcmd.mbox[0]);
trace_megasas_dcmd_ld_list_query(cmd->index, flags);
if (flags != MR_LD_QUERY_TYPE_ALL &&
flags != MR_LD_QUERY_TYPE_EXPOSED_TO_HOST) {
max_ld_disks = 0;
}
memset(&info, 0, dcmd_size);
if (cmd->iov_size < 12) {
trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
dcmd_size);
return MFI_STAT_INVALID_PARAMETER;
}
dcmd_size = sizeof(uint32_t) * 2 + 3;
max_ld_disks = cmd->iov_size - dcmd_size;
if (megasas_is_jbod(s)) {
max_ld_disks = 0;
}
if (max_ld_disks > MFI_MAX_LD) {
max_ld_disks = MFI_MAX_LD;
}
QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
SCSIDevice *sdev = SCSI_DEVICE(kid->child);
if (num_ld_disks >= max_ld_disks) {
break;
}
info.targetid[num_ld_disks] = sdev->lun;
num_ld_disks++;
dcmd_size++;
}
info.ld_count = cpu_to_le32(num_ld_disks);
info.size = dcmd_size;
trace_megasas_dcmd_ld_get_list(cmd->index, num_ld_disks, max_ld_disks);
resid = dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg);
cmd->iov_size = dcmd_size - resid;
return MFI_STAT_OK;
}
static int megasas_ld_get_info_submit(SCSIDevice *sdev, int lun,
MegasasCmd *cmd)
{
struct mfi_ld_info *info = cmd->iov_buf;
size_t dcmd_size = sizeof(struct mfi_ld_info);
uint8_t cdb[6];
ssize_t len, resid;
uint16_t sdev_id = ((sdev->id & 0xFF) << 8) | (lun & 0xFF);
uint64_t ld_size;
if (!cmd->iov_buf) {
cmd->iov_buf = g_malloc0(dcmd_size);
info = cmd->iov_buf;
megasas_setup_inquiry(cdb, 0x83, sizeof(info->vpd_page83));
cmd->req = scsi_req_new(sdev, cmd->index, lun, cdb, cmd);
if (!cmd->req) {
trace_megasas_dcmd_req_alloc_failed(cmd->index,
"LD get info vpd inquiry");
g_free(cmd->iov_buf);
cmd->iov_buf = NULL;
return MFI_STAT_FLASH_ALLOC_FAIL;
}
trace_megasas_dcmd_internal_submit(cmd->index,
"LD get info vpd inquiry", lun);
len = scsi_req_enqueue(cmd->req);
if (len > 0) {
cmd->iov_size = len;
scsi_req_continue(cmd->req);
}
return MFI_STAT_INVALID_STATUS;
}
info->ld_config.params.state = MFI_LD_STATE_OPTIMAL;
info->ld_config.properties.ld.v.target_id = lun;
info->ld_config.params.stripe_size = 3;
info->ld_config.params.num_drives = 1;
info->ld_config.params.is_consistent = 1;
/* Logical device size is in blocks */
blk_get_geometry(sdev->conf.blk, &ld_size);
info->size = cpu_to_le64(ld_size);
memset(info->ld_config.span, 0, sizeof(info->ld_config.span));
info->ld_config.span[0].start_block = 0;
info->ld_config.span[0].num_blocks = info->size;
info->ld_config.span[0].array_ref = cpu_to_le16(sdev_id);
resid = dma_buf_read(cmd->iov_buf, dcmd_size, &cmd->qsg);
g_free(cmd->iov_buf);
cmd->iov_size = dcmd_size - resid;
cmd->iov_buf = NULL;
return MFI_STAT_OK;
}
static int megasas_dcmd_ld_get_info(MegasasState *s, MegasasCmd *cmd)
{
struct mfi_ld_info info;
size_t dcmd_size = sizeof(info);
uint16_t ld_id;
uint32_t max_ld_disks = s->fw_luns;
SCSIDevice *sdev = NULL;
int retval = MFI_STAT_DEVICE_NOT_FOUND;
if (cmd->iov_size < dcmd_size) {
return MFI_STAT_INVALID_PARAMETER;
}
/* mbox0 has the ID */
ld_id = le16_to_cpu(cmd->frame->dcmd.mbox[0]);
trace_megasas_dcmd_ld_get_info(cmd->index, ld_id);
if (megasas_is_jbod(s)) {
return MFI_STAT_DEVICE_NOT_FOUND;
}
if (ld_id < max_ld_disks) {
sdev = scsi_device_find(&s->bus, 0, ld_id, 0);
}
if (sdev) {
retval = megasas_ld_get_info_submit(sdev, ld_id, cmd);
}
return retval;
}
static int megasas_dcmd_cfg_read(MegasasState *s, MegasasCmd *cmd)
{
uint8_t data[4096] = { 0 };
struct mfi_config_data *info;
int num_pd_disks = 0, array_offset, ld_offset;
BusChild *kid;
if (cmd->iov_size > 4096) {
return MFI_STAT_INVALID_PARAMETER;
}
QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
num_pd_disks++;
}
info = (struct mfi_config_data *)&data;
/*
* Array mapping:
* - One array per SCSI device
* - One logical drive per SCSI device
* spanning the entire device
*/
info->array_count = num_pd_disks;
info->array_size = sizeof(struct mfi_array) * num_pd_disks;
info->log_drv_count = num_pd_disks;
info->log_drv_size = sizeof(struct mfi_ld_config) * num_pd_disks;
info->spares_count = 0;
info->spares_size = sizeof(struct mfi_spare);
info->size = sizeof(struct mfi_config_data) + info->array_size +
info->log_drv_size;
if (info->size > 4096) {
return MFI_STAT_INVALID_PARAMETER;
}
array_offset = sizeof(struct mfi_config_data);
ld_offset = array_offset + sizeof(struct mfi_array) * num_pd_disks;
QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
SCSIDevice *sdev = SCSI_DEVICE(kid->child);
uint16_t sdev_id = ((sdev->id & 0xFF) << 8) | (sdev->lun & 0xFF);
struct mfi_array *array;
struct mfi_ld_config *ld;
uint64_t pd_size;
int i;
array = (struct mfi_array *)(data + array_offset);
blk_get_geometry(sdev->conf.blk, &pd_size);
array->size = cpu_to_le64(pd_size);
array->num_drives = 1;
array->array_ref = cpu_to_le16(sdev_id);
array->pd[0].ref.v.device_id = cpu_to_le16(sdev_id);
array->pd[0].ref.v.seq_num = 0;
array->pd[0].fw_state = MFI_PD_STATE_ONLINE;
array->pd[0].encl.pd = 0xFF;
array->pd[0].encl.slot = (sdev->id & 0xFF);
for (i = 1; i < MFI_MAX_ROW_SIZE; i++) {
array->pd[i].ref.v.device_id = 0xFFFF;
array->pd[i].ref.v.seq_num = 0;
array->pd[i].fw_state = MFI_PD_STATE_UNCONFIGURED_GOOD;
array->pd[i].encl.pd = 0xFF;
array->pd[i].encl.slot = 0xFF;
}
array_offset += sizeof(struct mfi_array);
ld = (struct mfi_ld_config *)(data + ld_offset);
memset(ld, 0, sizeof(struct mfi_ld_config));
ld->properties.ld.v.target_id = sdev->id;
ld->properties.default_cache_policy = MR_LD_CACHE_READ_AHEAD |
MR_LD_CACHE_READ_ADAPTIVE;
ld->properties.current_cache_policy = MR_LD_CACHE_READ_AHEAD |
MR_LD_CACHE_READ_ADAPTIVE;
ld->params.state = MFI_LD_STATE_OPTIMAL;
ld->params.stripe_size = 3;
ld->params.num_drives = 1;
ld->params.span_depth = 1;
ld->params.is_consistent = 1;
ld->span[0].start_block = 0;
ld->span[0].num_blocks = cpu_to_le64(pd_size);
ld->span[0].array_ref = cpu_to_le16(sdev_id);
ld_offset += sizeof(struct mfi_ld_config);
}
cmd->iov_size -= dma_buf_read((uint8_t *)data, info->size, &cmd->qsg);
return MFI_STAT_OK;
}
static int megasas_dcmd_get_properties(MegasasState *s, MegasasCmd *cmd)
{
struct mfi_ctrl_props info;
size_t dcmd_size = sizeof(info);
memset(&info, 0x0, dcmd_size);
if (cmd->iov_size < dcmd_size) {
trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
dcmd_size);
return MFI_STAT_INVALID_PARAMETER;
}
info.pred_fail_poll_interval = cpu_to_le16(300);
info.intr_throttle_cnt = cpu_to_le16(16);
info.intr_throttle_timeout = cpu_to_le16(50);
info.rebuild_rate = 30;
info.patrol_read_rate = 30;
info.bgi_rate = 30;
info.cc_rate = 30;
info.recon_rate = 30;
info.cache_flush_interval = 4;
info.spinup_drv_cnt = 2;
info.spinup_delay = 6;
info.ecc_bucket_size = 15;
info.ecc_bucket_leak_rate = cpu_to_le16(1440);
info.expose_encl_devices = 1;
cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg);
return MFI_STAT_OK;
}
static int megasas_cache_flush(MegasasState *s, MegasasCmd *cmd)
{
blk_drain_all();
return MFI_STAT_OK;
}
static int megasas_ctrl_shutdown(MegasasState *s, MegasasCmd *cmd)
{
s->fw_state = MFI_FWSTATE_READY;
return MFI_STAT_OK;
}
/* Some implementations use CLUSTER RESET LD to simulate a device reset */
static int megasas_cluster_reset_ld(MegasasState *s, MegasasCmd *cmd)
{
uint16_t target_id;
int i;
/* mbox0 contains the device index */
target_id = le16_to_cpu(cmd->frame->dcmd.mbox[0]);
trace_megasas_dcmd_reset_ld(cmd->index, target_id);
for (i = 0; i < s->fw_cmds; i++) {
MegasasCmd *tmp_cmd = &s->frames[i];
if (tmp_cmd->req && tmp_cmd->req->dev->id == target_id) {
SCSIDevice *d = tmp_cmd->req->dev;
qdev_reset_all(&d->qdev);
}
}
return MFI_STAT_OK;
}
static int megasas_dcmd_set_properties(MegasasState *s, MegasasCmd *cmd)
{
struct mfi_ctrl_props info;
size_t dcmd_size = sizeof(info);
if (cmd->iov_size < dcmd_size) {
trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
dcmd_size);
return MFI_STAT_INVALID_PARAMETER;
}
dma_buf_write((uint8_t *)&info, dcmd_size, &cmd->qsg);
trace_megasas_dcmd_unsupported(cmd->index, cmd->iov_size);
return MFI_STAT_OK;
}
static int megasas_dcmd_dummy(MegasasState *s, MegasasCmd *cmd)
{
trace_megasas_dcmd_dummy(cmd->index, cmd->iov_size);
return MFI_STAT_OK;
}
static const struct dcmd_cmd_tbl_t {
int opcode;
const char *desc;
int (*func)(MegasasState *s, MegasasCmd *cmd);
} dcmd_cmd_tbl[] = {
{ MFI_DCMD_CTRL_MFI_HOST_MEM_ALLOC, "CTRL_HOST_MEM_ALLOC",
megasas_dcmd_dummy },
{ MFI_DCMD_CTRL_GET_INFO, "CTRL_GET_INFO",
megasas_ctrl_get_info },
{ MFI_DCMD_CTRL_GET_PROPERTIES, "CTRL_GET_PROPERTIES",
megasas_dcmd_get_properties },
{ MFI_DCMD_CTRL_SET_PROPERTIES, "CTRL_SET_PROPERTIES",
megasas_dcmd_set_properties },
{ MFI_DCMD_CTRL_ALARM_GET, "CTRL_ALARM_GET",
megasas_dcmd_dummy },
{ MFI_DCMD_CTRL_ALARM_ENABLE, "CTRL_ALARM_ENABLE",
megasas_dcmd_dummy },
{ MFI_DCMD_CTRL_ALARM_DISABLE, "CTRL_ALARM_DISABLE",
megasas_dcmd_dummy },
{ MFI_DCMD_CTRL_ALARM_SILENCE, "CTRL_ALARM_SILENCE",
megasas_dcmd_dummy },
{ MFI_DCMD_CTRL_ALARM_TEST, "CTRL_ALARM_TEST",
megasas_dcmd_dummy },
{ MFI_DCMD_CTRL_EVENT_GETINFO, "CTRL_EVENT_GETINFO",
megasas_event_info },
{ MFI_DCMD_CTRL_EVENT_GET, "CTRL_EVENT_GET",
megasas_dcmd_dummy },
{ MFI_DCMD_CTRL_EVENT_WAIT, "CTRL_EVENT_WAIT",
megasas_event_wait },
{ MFI_DCMD_CTRL_SHUTDOWN, "CTRL_SHUTDOWN",
megasas_ctrl_shutdown },
{ MFI_DCMD_HIBERNATE_STANDBY, "CTRL_STANDBY",
megasas_dcmd_dummy },
{ MFI_DCMD_CTRL_GET_TIME, "CTRL_GET_TIME",
megasas_dcmd_get_fw_time },
{ MFI_DCMD_CTRL_SET_TIME, "CTRL_SET_TIME",
megasas_dcmd_set_fw_time },
{ MFI_DCMD_CTRL_BIOS_DATA_GET, "CTRL_BIOS_DATA_GET",
megasas_dcmd_get_bios_info },
{ MFI_DCMD_CTRL_FACTORY_DEFAULTS, "CTRL_FACTORY_DEFAULTS",
megasas_dcmd_dummy },
{ MFI_DCMD_CTRL_MFC_DEFAULTS_GET, "CTRL_MFC_DEFAULTS_GET",
megasas_mfc_get_defaults },
{ MFI_DCMD_CTRL_MFC_DEFAULTS_SET, "CTRL_MFC_DEFAULTS_SET",
megasas_dcmd_dummy },
{ MFI_DCMD_CTRL_CACHE_FLUSH, "CTRL_CACHE_FLUSH",
megasas_cache_flush },
{ MFI_DCMD_PD_GET_LIST, "PD_GET_LIST",
megasas_dcmd_pd_get_list },
{ MFI_DCMD_PD_LIST_QUERY, "PD_LIST_QUERY",
megasas_dcmd_pd_list_query },
{ MFI_DCMD_PD_GET_INFO, "PD_GET_INFO",
megasas_dcmd_pd_get_info },
{ MFI_DCMD_PD_STATE_SET, "PD_STATE_SET",
megasas_dcmd_dummy },
{ MFI_DCMD_PD_REBUILD, "PD_REBUILD",
megasas_dcmd_dummy },
{ MFI_DCMD_PD_BLINK, "PD_BLINK",
megasas_dcmd_dummy },
{ MFI_DCMD_PD_UNBLINK, "PD_UNBLINK",
megasas_dcmd_dummy },
{ MFI_DCMD_LD_GET_LIST, "LD_GET_LIST",
megasas_dcmd_ld_get_list},
{ MFI_DCMD_LD_LIST_QUERY, "LD_LIST_QUERY",
megasas_dcmd_ld_list_query },
{ MFI_DCMD_LD_GET_INFO, "LD_GET_INFO",
megasas_dcmd_ld_get_info },
{ MFI_DCMD_LD_GET_PROP, "LD_GET_PROP",
megasas_dcmd_dummy },
{ MFI_DCMD_LD_SET_PROP, "LD_SET_PROP",
megasas_dcmd_dummy },
{ MFI_DCMD_LD_DELETE, "LD_DELETE",
megasas_dcmd_dummy },
{ MFI_DCMD_CFG_READ, "CFG_READ",
megasas_dcmd_cfg_read },
{ MFI_DCMD_CFG_ADD, "CFG_ADD",
megasas_dcmd_dummy },
{ MFI_DCMD_CFG_CLEAR, "CFG_CLEAR",
megasas_dcmd_dummy },
{ MFI_DCMD_CFG_FOREIGN_READ, "CFG_FOREIGN_READ",
megasas_dcmd_dummy },
{ MFI_DCMD_CFG_FOREIGN_IMPORT, "CFG_FOREIGN_IMPORT",
megasas_dcmd_dummy },
{ MFI_DCMD_BBU_STATUS, "BBU_STATUS",
megasas_dcmd_dummy },
{ MFI_DCMD_BBU_CAPACITY_INFO, "BBU_CAPACITY_INFO",
megasas_dcmd_dummy },
{ MFI_DCMD_BBU_DESIGN_INFO, "BBU_DESIGN_INFO",
megasas_dcmd_dummy },
{ MFI_DCMD_BBU_PROP_GET, "BBU_PROP_GET",
megasas_dcmd_dummy },
{ MFI_DCMD_CLUSTER, "CLUSTER",
megasas_dcmd_dummy },
{ MFI_DCMD_CLUSTER_RESET_ALL, "CLUSTER_RESET_ALL",
megasas_dcmd_dummy },
{ MFI_DCMD_CLUSTER_RESET_LD, "CLUSTER_RESET_LD",
megasas_cluster_reset_ld },
{ -1, NULL, NULL }
};
static int megasas_handle_dcmd(MegasasState *s, MegasasCmd *cmd)
{
int retval = 0;
size_t len;
const struct dcmd_cmd_tbl_t *cmdptr = dcmd_cmd_tbl;
cmd->dcmd_opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
trace_megasas_handle_dcmd(cmd->index, cmd->dcmd_opcode);
if (megasas_map_dcmd(s, cmd) < 0) {
return MFI_STAT_MEMORY_NOT_AVAILABLE;
}
while (cmdptr->opcode != -1 && cmdptr->opcode != cmd->dcmd_opcode) {
cmdptr++;
}
len = cmd->iov_size;
if (cmdptr->opcode == -1) {
trace_megasas_dcmd_unhandled(cmd->index, cmd->dcmd_opcode, len);
retval = megasas_dcmd_dummy(s, cmd);
} else {
trace_megasas_dcmd_enter(cmd->index, cmdptr->desc, len);
retval = cmdptr->func(s, cmd);
}
if (retval != MFI_STAT_INVALID_STATUS) {
megasas_finish_dcmd(cmd, len);
}
return retval;
}
static int megasas_finish_internal_dcmd(MegasasCmd *cmd,
SCSIRequest *req, size_t resid)
{
int retval = MFI_STAT_OK;
int lun = req->lun;
trace_megasas_dcmd_internal_finish(cmd->index, cmd->dcmd_opcode, lun);
cmd->iov_size -= resid;
switch (cmd->dcmd_opcode) {
case MFI_DCMD_PD_GET_INFO:
retval = megasas_pd_get_info_submit(req->dev, lun, cmd);
break;
case MFI_DCMD_LD_GET_INFO:
retval = megasas_ld_get_info_submit(req->dev, lun, cmd);
break;
default:
trace_megasas_dcmd_internal_invalid(cmd->index, cmd->dcmd_opcode);
retval = MFI_STAT_INVALID_DCMD;
break;
}
if (retval != MFI_STAT_INVALID_STATUS) {
megasas_finish_dcmd(cmd, cmd->iov_size);
}
return retval;
}
static int megasas_enqueue_req(MegasasCmd *cmd, bool is_write)
{
int len;
len = scsi_req_enqueue(cmd->req);
if (len < 0) {
len = -len;
}
if (len > 0) {
if (len > cmd->iov_size) {
if (is_write) {
trace_megasas_iov_write_overflow(cmd->index, len,
cmd->iov_size);
} else {
trace_megasas_iov_read_overflow(cmd->index, len,
cmd->iov_size);
}
}
if (len < cmd->iov_size) {
if (is_write) {
trace_megasas_iov_write_underflow(cmd->index, len,
cmd->iov_size);
} else {
trace_megasas_iov_read_underflow(cmd->index, len,
cmd->iov_size);
}
cmd->iov_size = len;
}
scsi_req_continue(cmd->req);
}
return len;
}
static int megasas_handle_scsi(MegasasState *s, MegasasCmd *cmd,
int frame_cmd)
{
uint8_t *cdb;
int target_id, lun_id, cdb_len;
bool is_write;
struct SCSIDevice *sdev = NULL;
bool is_logical = (frame_cmd == MFI_CMD_LD_SCSI_IO);
cdb = cmd->frame->pass.cdb;
target_id = cmd->frame->header.target_id;
lun_id = cmd->frame->header.lun_id;
cdb_len = cmd->frame->header.cdb_len;
if (is_logical) {
if (target_id >= MFI_MAX_LD || lun_id != 0) {
trace_megasas_scsi_target_not_present(
mfi_frame_desc(frame_cmd), is_logical, target_id, lun_id);
return MFI_STAT_DEVICE_NOT_FOUND;
}
}
sdev = scsi_device_find(&s->bus, 0, target_id, lun_id);
cmd->iov_size = le32_to_cpu(cmd->frame->header.data_len);
trace_megasas_handle_scsi(mfi_frame_desc(frame_cmd), is_logical,
target_id, lun_id, sdev, cmd->iov_size);
if (!sdev || (megasas_is_jbod(s) && is_logical)) {
trace_megasas_scsi_target_not_present(
mfi_frame_desc(frame_cmd), is_logical, target_id, lun_id);
return MFI_STAT_DEVICE_NOT_FOUND;
}
if (cdb_len > 16) {
trace_megasas_scsi_invalid_cdb_len(
mfi_frame_desc(frame_cmd), is_logical,
target_id, lun_id, cdb_len);
megasas_write_sense(cmd, SENSE_CODE(INVALID_OPCODE));
cmd->frame->header.scsi_status = CHECK_CONDITION;
s->event_count++;
return MFI_STAT_SCSI_DONE_WITH_ERROR;
}
if (megasas_map_sgl(s, cmd, &cmd->frame->pass.sgl)) {
megasas_write_sense(cmd, SENSE_CODE(TARGET_FAILURE));
cmd->frame->header.scsi_status = CHECK_CONDITION;
s->event_count++;
return MFI_STAT_SCSI_DONE_WITH_ERROR;
}
cmd->req = scsi_req_new(sdev, cmd->index, lun_id, cdb, cmd);
if (!cmd->req) {
trace_megasas_scsi_req_alloc_failed(
mfi_frame_desc(frame_cmd), target_id, lun_id);
megasas_write_sense(cmd, SENSE_CODE(NO_SENSE));
cmd->frame->header.scsi_status = BUSY;
s->event_count++;
return MFI_STAT_SCSI_DONE_WITH_ERROR;
}
is_write = (cmd->req->cmd.mode == SCSI_XFER_TO_DEV);
if (cmd->iov_size) {
if (is_write) {
trace_megasas_scsi_write_start(cmd->index, cmd->iov_size);
} else {
trace_megasas_scsi_read_start(cmd->index, cmd->iov_size);
}
} else {
trace_megasas_scsi_nodata(cmd->index);
}
megasas_enqueue_req(cmd, is_write);
return MFI_STAT_INVALID_STATUS;
}
static int megasas_handle_io(MegasasState *s, MegasasCmd *cmd, int frame_cmd)
{
uint32_t lba_count, lba_start_hi, lba_start_lo;
uint64_t lba_start;
bool is_write = (frame_cmd == MFI_CMD_LD_WRITE);
uint8_t cdb[16];
int len;
struct SCSIDevice *sdev = NULL;
int target_id, lun_id, cdb_len;
lba_count = le32_to_cpu(cmd->frame->io.header.data_len);
lba_start_lo = le32_to_cpu(cmd->frame->io.lba_lo);
lba_start_hi = le32_to_cpu(cmd->frame->io.lba_hi);
lba_start = ((uint64_t)lba_start_hi << 32) | lba_start_lo;
target_id = cmd->frame->header.target_id;
lun_id = cmd->frame->header.lun_id;
cdb_len = cmd->frame->header.cdb_len;
if (target_id < MFI_MAX_LD && lun_id == 0) {
sdev = scsi_device_find(&s->bus, 0, target_id, lun_id);
}
trace_megasas_handle_io(cmd->index,
mfi_frame_desc(frame_cmd), target_id, lun_id,
(unsigned long)lba_start, (unsigned long)lba_count);
if (!sdev) {
trace_megasas_io_target_not_present(cmd->index,
mfi_frame_desc(frame_cmd), target_id, lun_id);
return MFI_STAT_DEVICE_NOT_FOUND;
}
if (cdb_len > 16) {
trace_megasas_scsi_invalid_cdb_len(
mfi_frame_desc(frame_cmd), 1, target_id, lun_id, cdb_len);
megasas_write_sense(cmd, SENSE_CODE(INVALID_OPCODE));
cmd->frame->header.scsi_status = CHECK_CONDITION;
s->event_count++;
return MFI_STAT_SCSI_DONE_WITH_ERROR;
}
cmd->iov_size = lba_count * sdev->blocksize;
if (megasas_map_sgl(s, cmd, &cmd->frame->io.sgl)) {
megasas_write_sense(cmd, SENSE_CODE(TARGET_FAILURE));
cmd->frame->header.scsi_status = CHECK_CONDITION;
s->event_count++;
return MFI_STAT_SCSI_DONE_WITH_ERROR;
}
megasas_encode_lba(cdb, lba_start, lba_count, is_write);
cmd->req = scsi_req_new(sdev, cmd->index,
lun_id, cdb, cmd);
if (!cmd->req) {
trace_megasas_scsi_req_alloc_failed(
mfi_frame_desc(frame_cmd), target_id, lun_id);
megasas_write_sense(cmd, SENSE_CODE(NO_SENSE));
cmd->frame->header.scsi_status = BUSY;
s->event_count++;
return MFI_STAT_SCSI_DONE_WITH_ERROR;
}
len = megasas_enqueue_req(cmd, is_write);
if (len > 0) {
if (is_write) {
trace_megasas_io_write_start(cmd->index, lba_start, lba_count, len);
} else {
trace_megasas_io_read_start(cmd->index, lba_start, lba_count, len);
}
}
return MFI_STAT_INVALID_STATUS;
}
static QEMUSGList *megasas_get_sg_list(SCSIRequest *req)
{
MegasasCmd *cmd = req->hba_private;
if (cmd->dcmd_opcode != -1) {
return NULL;
} else {
return &cmd->qsg;
}
}
static void megasas_xfer_complete(SCSIRequest *req, uint32_t len)
{
MegasasCmd *cmd = req->hba_private;
uint8_t *buf;
trace_megasas_io_complete(cmd->index, len);
if (cmd->dcmd_opcode != -1) {
scsi_req_continue(req);
return;
}
buf = scsi_req_get_buf(req);
if (cmd->dcmd_opcode == MFI_DCMD_PD_GET_INFO && cmd->iov_buf) {
struct mfi_pd_info *info = cmd->iov_buf;
if (info->inquiry_data[0] == 0x7f) {
memset(info->inquiry_data, 0, sizeof(info->inquiry_data));
memcpy(info->inquiry_data, buf, len);
} else if (info->vpd_page83[0] == 0x7f) {
memset(info->vpd_page83, 0, sizeof(info->vpd_page83));
memcpy(info->vpd_page83, buf, len);
}
scsi_req_continue(req);
} else if (cmd->dcmd_opcode == MFI_DCMD_LD_GET_INFO) {
struct mfi_ld_info *info = cmd->iov_buf;
if (cmd->iov_buf) {
memcpy(info->vpd_page83, buf, sizeof(info->vpd_page83));
scsi_req_continue(req);
}
}
}
static void megasas_command_complete(SCSIRequest *req, size_t resid)
{
MegasasCmd *cmd = req->hba_private;
uint8_t cmd_status = MFI_STAT_OK;
trace_megasas_command_complete(cmd->index, req->status, resid);
if (req->io_canceled) {
return;
}
if (cmd->dcmd_opcode != -1) {
/*
* Internal command complete
*/
cmd_status = megasas_finish_internal_dcmd(cmd, req, resid);
if (cmd_status == MFI_STAT_INVALID_STATUS) {
return;
}
} else {
trace_megasas_scsi_complete(cmd->index, req->status,
cmd->iov_size, req->cmd.xfer);
if (req->status != GOOD) {
cmd_status = MFI_STAT_SCSI_DONE_WITH_ERROR;
}
if (req->status == CHECK_CONDITION) {
megasas_copy_sense(cmd);
}
cmd->frame->header.scsi_status = req->status;
}
cmd->frame->header.cmd_status = cmd_status;
megasas_complete_command(cmd);
}
static void megasas_command_cancelled(SCSIRequest *req)
{
MegasasCmd *cmd = req->hba_private;
if (!cmd) {
return;
}
cmd->frame->header.cmd_status = MFI_STAT_SCSI_IO_FAILED;
megasas_complete_command(cmd);
}
static int megasas_handle_abort(MegasasState *s, MegasasCmd *cmd)
{
uint64_t abort_ctx = le64_to_cpu(cmd->frame->abort.abort_context);
hwaddr abort_addr, addr_hi, addr_lo;
MegasasCmd *abort_cmd;
addr_hi = le32_to_cpu(cmd->frame->abort.abort_mfi_addr_hi);
addr_lo = le32_to_cpu(cmd->frame->abort.abort_mfi_addr_lo);
abort_addr = ((uint64_t)addr_hi << 32) | addr_lo;
abort_cmd = megasas_lookup_frame(s, abort_addr);
if (!abort_cmd) {
trace_megasas_abort_no_cmd(cmd->index, abort_ctx);
s->event_count++;
return MFI_STAT_OK;
}
if (!megasas_use_queue64(s)) {
abort_ctx &= (uint64_t)0xFFFFFFFF;
}
if (abort_cmd->context != abort_ctx) {
trace_megasas_abort_invalid_context(cmd->index, abort_cmd->context,
abort_cmd->index);
s->event_count++;
return MFI_STAT_ABORT_NOT_POSSIBLE;
}
trace_megasas_abort_frame(cmd->index, abort_cmd->index);
megasas_abort_command(abort_cmd);
if (!s->event_cmd || abort_cmd != s->event_cmd) {
s->event_cmd = NULL;
}
s->event_count++;
return MFI_STAT_OK;
}
static void megasas_handle_frame(MegasasState *s, uint64_t frame_addr,
uint32_t frame_count)
{
uint8_t frame_status = MFI_STAT_INVALID_CMD;
uint64_t frame_context;
int frame_cmd;
MegasasCmd *cmd;
/*
* Always read 64bit context, top bits will be
* masked out if required in megasas_enqueue_frame()
*/
frame_context = megasas_frame_get_context(s, frame_addr);
cmd = megasas_enqueue_frame(s, frame_addr, frame_context, frame_count);
if (!cmd) {
/* reply queue full */
trace_megasas_frame_busy(frame_addr);
megasas_frame_set_scsi_status(s, frame_addr, BUSY);
megasas_frame_set_cmd_status(s, frame_addr, MFI_STAT_SCSI_DONE_WITH_ERROR);
megasas_complete_frame(s, frame_context);
s->event_count++;
return;
}
frame_cmd = cmd->frame->header.frame_cmd;
switch (frame_cmd) {
case MFI_CMD_INIT:
frame_status = megasas_init_firmware(s, cmd);
break;
case MFI_CMD_DCMD:
frame_status = megasas_handle_dcmd(s, cmd);
break;
case MFI_CMD_ABORT:
frame_status = megasas_handle_abort(s, cmd);
break;
case MFI_CMD_PD_SCSI_IO:
case MFI_CMD_LD_SCSI_IO:
frame_status = megasas_handle_scsi(s, cmd, frame_cmd);
break;
case MFI_CMD_LD_READ:
case MFI_CMD_LD_WRITE:
frame_status = megasas_handle_io(s, cmd, frame_cmd);
break;
default:
trace_megasas_unhandled_frame_cmd(cmd->index, frame_cmd);
s->event_count++;
break;
}
if (frame_status != MFI_STAT_INVALID_STATUS) {
if (cmd->frame) {
cmd->frame->header.cmd_status = frame_status;
} else {
megasas_frame_set_cmd_status(s, frame_addr, frame_status);
}
megasas_unmap_frame(s, cmd);
megasas_complete_frame(s, cmd->context);
}
}
static uint64_t megasas_mmio_read(void *opaque, hwaddr addr,
unsigned size)
{
MegasasState *s = opaque;
PCIDevice *pci_dev = PCI_DEVICE(s);
MegasasBaseClass *base_class = MEGASAS_GET_CLASS(s);
uint32_t retval = 0;
switch (addr) {
case MFI_IDB:
retval = 0;
trace_megasas_mmio_readl("MFI_IDB", retval);
break;
case MFI_OMSG0:
case MFI_OSP0:
retval = (msix_present(pci_dev) ? MFI_FWSTATE_MSIX_SUPPORTED : 0) |
(s->fw_state & MFI_FWSTATE_MASK) |
((s->fw_sge & 0xff) << 16) |
(s->fw_cmds & 0xFFFF);
trace_megasas_mmio_readl(addr == MFI_OMSG0 ? "MFI_OMSG0" : "MFI_OSP0",
retval);
break;
case MFI_OSTS:
if (megasas_intr_enabled(s) && s->doorbell) {
retval = base_class->osts;
}
trace_megasas_mmio_readl("MFI_OSTS", retval);
break;
case MFI_OMSK:
retval = s->intr_mask;
trace_megasas_mmio_readl("MFI_OMSK", retval);
break;
case MFI_ODCR0:
retval = s->doorbell ? 1 : 0;
trace_megasas_mmio_readl("MFI_ODCR0", retval);
break;
case MFI_DIAG:
retval = s->diag;
trace_megasas_mmio_readl("MFI_DIAG", retval);
break;
case MFI_OSP1:
retval = 15;
trace_megasas_mmio_readl("MFI_OSP1", retval);
break;
default:
trace_megasas_mmio_invalid_readl(addr);
break;
}
return retval;
}
static int adp_reset_seq[] = {0x00, 0x04, 0x0b, 0x02, 0x07, 0x0d};
static void megasas_mmio_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
MegasasState *s = opaque;
PCIDevice *pci_dev = PCI_DEVICE(s);
uint64_t frame_addr;
uint32_t frame_count;
int i;
switch (addr) {
case MFI_IDB:
trace_megasas_mmio_writel("MFI_IDB", val);
if (val & MFI_FWINIT_ABORT) {
/* Abort all pending cmds */
for (i = 0; i < s->fw_cmds; i++) {
megasas_abort_command(&s->frames[i]);
}
}
if (val & MFI_FWINIT_READY) {
/* move to FW READY */
megasas_soft_reset(s);
}
if (val & MFI_FWINIT_MFIMODE) {
/* discard MFIs */
}
if (val & MFI_FWINIT_STOP_ADP) {
/* Terminal error, stop processing */
s->fw_state = MFI_FWSTATE_FAULT;
}
break;
case MFI_OMSK:
trace_megasas_mmio_writel("MFI_OMSK", val);
s->intr_mask = val;
if (!megasas_intr_enabled(s) &&
!msi_enabled(pci_dev) &&
!msix_enabled(pci_dev)) {
trace_megasas_irq_lower();
pci_irq_deassert(pci_dev);
}
if (megasas_intr_enabled(s)) {
if (msix_enabled(pci_dev)) {
trace_megasas_msix_enabled(0);
} else if (msi_enabled(pci_dev)) {
trace_megasas_msi_enabled(0);
} else {
trace_megasas_intr_enabled();
}
} else {
trace_megasas_intr_disabled();
megasas_soft_reset(s);
}
break;
case MFI_ODCR0:
trace_megasas_mmio_writel("MFI_ODCR0", val);
s->doorbell = 0;
if (megasas_intr_enabled(s)) {
if (!msix_enabled(pci_dev) && !msi_enabled(pci_dev)) {
trace_megasas_irq_lower();
pci_irq_deassert(pci_dev);
}
}
break;
case MFI_IQPH:
trace_megasas_mmio_writel("MFI_IQPH", val);
/* Received high 32 bits of a 64 bit MFI frame address */
s->frame_hi = val;
break;
case MFI_IQPL:
trace_megasas_mmio_writel("MFI_IQPL", val);
/* Received low 32 bits of a 64 bit MFI frame address */
/* Fallthrough */
case MFI_IQP:
if (addr == MFI_IQP) {
trace_megasas_mmio_writel("MFI_IQP", val);
/* Received 64 bit MFI frame address */
s->frame_hi = 0;
}
frame_addr = (val & ~0x1F);
/* Add possible 64 bit offset */
frame_addr |= ((uint64_t)s->frame_hi << 32);
s->frame_hi = 0;
frame_count = (val >> 1) & 0xF;
megasas_handle_frame(s, frame_addr, frame_count);
break;
case MFI_SEQ:
trace_megasas_mmio_writel("MFI_SEQ", val);
/* Magic sequence to start ADP reset */
if (adp_reset_seq[s->adp_reset++] == val) {
if (s->adp_reset == 6) {
s->adp_reset = 0;
s->diag = MFI_DIAG_WRITE_ENABLE;
}
} else {
s->adp_reset = 0;
s->diag = 0;
}
break;
case MFI_DIAG:
trace_megasas_mmio_writel("MFI_DIAG", val);
/* ADP reset */
if ((s->diag & MFI_DIAG_WRITE_ENABLE) &&
(val & MFI_DIAG_RESET_ADP)) {
s->diag |= MFI_DIAG_RESET_ADP;
megasas_soft_reset(s);
s->adp_reset = 0;
s->diag = 0;
}
break;
default:
trace_megasas_mmio_invalid_writel(addr, val);
break;
}
}
static const MemoryRegionOps megasas_mmio_ops = {
.read = megasas_mmio_read,
.write = megasas_mmio_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.impl = {
.min_access_size = 8,
.max_access_size = 8,
}
};
static uint64_t megasas_port_read(void *opaque, hwaddr addr,
unsigned size)
{
return megasas_mmio_read(opaque, addr & 0xff, size);
}
static void megasas_port_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
megasas_mmio_write(opaque, addr & 0xff, val, size);
}
static const MemoryRegionOps megasas_port_ops = {
.read = megasas_port_read,
.write = megasas_port_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.impl = {
.min_access_size = 4,
.max_access_size = 4,
}
};
static uint64_t megasas_queue_read(void *opaque, hwaddr addr,
unsigned size)
{
return 0;
}
static void megasas_queue_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
return;
}
static const MemoryRegionOps megasas_queue_ops = {
.read = megasas_queue_read,
.write = megasas_queue_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.impl = {
.min_access_size = 8,
.max_access_size = 8,
}
};
static void megasas_soft_reset(MegasasState *s)
{
int i;
MegasasCmd *cmd;
trace_megasas_reset(s->fw_state);
for (i = 0; i < s->fw_cmds; i++) {
cmd = &s->frames[i];
megasas_abort_command(cmd);
}
if (s->fw_state == MFI_FWSTATE_READY) {
BusChild *kid;
/*
* The EFI firmware doesn't handle UA,
* so we need to clear the Power On/Reset UA
* after the initial reset.
*/
QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
SCSIDevice *sdev = SCSI_DEVICE(kid->child);
sdev->unit_attention = SENSE_CODE(NO_SENSE);
scsi_device_unit_attention_reported(sdev);
}
}
megasas_reset_frames(s);
s->reply_queue_len = s->fw_cmds;
s->reply_queue_pa = 0;
s->consumer_pa = 0;
s->producer_pa = 0;
s->fw_state = MFI_FWSTATE_READY;
s->doorbell = 0;
s->intr_mask = MEGASAS_INTR_DISABLED_MASK;
s->frame_hi = 0;
s->flags &= ~MEGASAS_MASK_USE_QUEUE64;
s->event_count++;
s->boot_event = s->event_count;
}
static void megasas_scsi_reset(DeviceState *dev)
{
MegasasState *s = MEGASAS(dev);
megasas_soft_reset(s);
}
static const VMStateDescription vmstate_megasas_gen1 = {
.name = "megasas",
.version_id = 0,
.minimum_version_id = 0,
.fields = (VMStateField[]) {
VMSTATE_PCI_DEVICE(parent_obj, MegasasState),
VMSTATE_MSIX(parent_obj, MegasasState),
VMSTATE_UINT32(fw_state, MegasasState),
VMSTATE_UINT32(intr_mask, MegasasState),
VMSTATE_UINT32(doorbell, MegasasState),
VMSTATE_UINT64(reply_queue_pa, MegasasState),
VMSTATE_UINT64(consumer_pa, MegasasState),
VMSTATE_UINT64(producer_pa, MegasasState),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_megasas_gen2 = {
.name = "megasas-gen2",
.version_id = 0,
.minimum_version_id = 0,
.minimum_version_id_old = 0,
.fields = (VMStateField[]) {
VMSTATE_PCI_DEVICE(parent_obj, MegasasState),
VMSTATE_MSIX(parent_obj, MegasasState),
VMSTATE_UINT32(fw_state, MegasasState),
VMSTATE_UINT32(intr_mask, MegasasState),
VMSTATE_UINT32(doorbell, MegasasState),
VMSTATE_UINT64(reply_queue_pa, MegasasState),
VMSTATE_UINT64(consumer_pa, MegasasState),
VMSTATE_UINT64(producer_pa, MegasasState),
VMSTATE_END_OF_LIST()
}
};
static void megasas_scsi_uninit(PCIDevice *d)
{
MegasasState *s = MEGASAS(d);
if (megasas_use_msix(s)) {
msix_uninit(d, &s->mmio_io, &s->mmio_io);
}
msi_uninit(d);
}
static const struct SCSIBusInfo megasas_scsi_info = {
.tcq = true,
.max_target = MFI_MAX_LD,
.max_lun = 255,
.transfer_data = megasas_xfer_complete,
.get_sg_list = megasas_get_sg_list,
.complete = megasas_command_complete,
.cancel = megasas_command_cancelled,
};
static void megasas_scsi_realize(PCIDevice *dev, Error **errp)
{
MegasasState *s = MEGASAS(dev);
MegasasBaseClass *b = MEGASAS_GET_CLASS(s);
uint8_t *pci_conf;
int i, bar_type;
Error *err = NULL;
int ret;
pci_conf = dev->config;
/* PCI latency timer = 0 */
pci_conf[PCI_LATENCY_TIMER] = 0;
/* Interrupt pin 1 */
pci_conf[PCI_INTERRUPT_PIN] = 0x01;
if (s->msi != ON_OFF_AUTO_OFF) {
ret = msi_init(dev, 0x50, 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;
} else if (ret) {
/* With msi=auto, we fall back to MSI off silently */
s->msi = ON_OFF_AUTO_OFF;
error_free(err);
}
}
memory_region_init_io(&s->mmio_io, OBJECT(s), &megasas_mmio_ops, s,
"megasas-mmio", 0x4000);
memory_region_init_io(&s->port_io, OBJECT(s), &megasas_port_ops, s,
"megasas-io", 256);
memory_region_init_io(&s->queue_io, OBJECT(s), &megasas_queue_ops, s,
"megasas-queue", 0x40000);
if (megasas_use_msix(s) &&
msix_init(dev, 15, &s->mmio_io, b->mmio_bar, 0x2000,
&s->mmio_io, b->mmio_bar, 0x3800, 0x68, NULL)) {
/* TODO: check msix_init's error, and should fail on msix=on */
s->msix = ON_OFF_AUTO_OFF;
}
if (pci_is_express(dev)) {
pcie_endpoint_cap_init(dev, 0xa0);
}
bar_type = PCI_BASE_ADDRESS_SPACE_MEMORY | PCI_BASE_ADDRESS_MEM_TYPE_64;
pci_register_bar(dev, b->ioport_bar,
PCI_BASE_ADDRESS_SPACE_IO, &s->port_io);
pci_register_bar(dev, b->mmio_bar, bar_type, &s->mmio_io);
pci_register_bar(dev, 3, bar_type, &s->queue_io);
if (megasas_use_msix(s)) {
msix_vector_use(dev, 0);
}
s->fw_state = MFI_FWSTATE_READY;
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);
}
if (!s->hba_serial) {
s->hba_serial = g_strdup(MEGASAS_HBA_SERIAL);
}
if (s->fw_sge >= MEGASAS_MAX_SGE - MFI_PASS_FRAME_SIZE) {
s->fw_sge = MEGASAS_MAX_SGE - MFI_PASS_FRAME_SIZE;
} else if (s->fw_sge >= 128 - MFI_PASS_FRAME_SIZE) {
s->fw_sge = 128 - MFI_PASS_FRAME_SIZE;
} else {
s->fw_sge = 64 - MFI_PASS_FRAME_SIZE;
}
if (s->fw_cmds > MEGASAS_MAX_FRAMES) {
s->fw_cmds = MEGASAS_MAX_FRAMES;
}
trace_megasas_init(s->fw_sge, s->fw_cmds,
megasas_is_jbod(s) ? "jbod" : "raid");
if (megasas_is_jbod(s)) {
s->fw_luns = MFI_MAX_SYS_PDS;
} else {
s->fw_luns = MFI_MAX_LD;
}
s->producer_pa = 0;
s->consumer_pa = 0;
for (i = 0; i < s->fw_cmds; i++) {
s->frames[i].index = i;
s->frames[i].context = -1;
s->frames[i].pa = 0;
s->frames[i].state = s;
}
scsi_bus_init(&s->bus, sizeof(s->bus), DEVICE(dev), &megasas_scsi_info);
}
static Property megasas_properties_gen1[] = {
DEFINE_PROP_UINT32("max_sge", MegasasState, fw_sge,
MEGASAS_DEFAULT_SGE),
DEFINE_PROP_UINT32("max_cmds", MegasasState, fw_cmds,
MEGASAS_DEFAULT_FRAMES),
DEFINE_PROP_STRING("hba_serial", MegasasState, hba_serial),
DEFINE_PROP_UINT64("sas_address", MegasasState, sas_addr, 0),
DEFINE_PROP_ON_OFF_AUTO("msi", MegasasState, msi, ON_OFF_AUTO_AUTO),
DEFINE_PROP_ON_OFF_AUTO("msix", MegasasState, msix, ON_OFF_AUTO_AUTO),
DEFINE_PROP_BIT("use_jbod", MegasasState, flags,
MEGASAS_FLAG_USE_JBOD, false),
DEFINE_PROP_END_OF_LIST(),
};
static Property megasas_properties_gen2[] = {
DEFINE_PROP_UINT32("max_sge", MegasasState, fw_sge,
MEGASAS_DEFAULT_SGE),
DEFINE_PROP_UINT32("max_cmds", MegasasState, fw_cmds,
MEGASAS_GEN2_DEFAULT_FRAMES),
DEFINE_PROP_STRING("hba_serial", MegasasState, hba_serial),
DEFINE_PROP_UINT64("sas_address", MegasasState, sas_addr, 0),
DEFINE_PROP_ON_OFF_AUTO("msi", MegasasState, msi, ON_OFF_AUTO_AUTO),
DEFINE_PROP_ON_OFF_AUTO("msix", MegasasState, msix, ON_OFF_AUTO_AUTO),
DEFINE_PROP_BIT("use_jbod", MegasasState, flags,
MEGASAS_FLAG_USE_JBOD, false),
DEFINE_PROP_END_OF_LIST(),
};
typedef struct MegasasInfo {
const char *name;
const char *desc;
const char *product_name;
const char *product_version;
uint16_t device_id;
uint16_t subsystem_id;
int ioport_bar;
int mmio_bar;
int osts;
const VMStateDescription *vmsd;
Property *props;
InterfaceInfo *interfaces;
} MegasasInfo;
static struct MegasasInfo megasas_devices[] = {
{
.name = TYPE_MEGASAS_GEN1,
.desc = "LSI MegaRAID SAS 1078",
.product_name = "LSI MegaRAID SAS 8708EM2",
.product_version = MEGASAS_VERSION_GEN1,
.device_id = PCI_DEVICE_ID_LSI_SAS1078,
.subsystem_id = 0x1013,
.ioport_bar = 2,
.mmio_bar = 0,
.osts = MFI_1078_RM | 1,
.vmsd = &vmstate_megasas_gen1,
.props = megasas_properties_gen1,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
},{
.name = TYPE_MEGASAS_GEN2,
.desc = "LSI MegaRAID SAS 2108",
.product_name = "LSI MegaRAID SAS 9260-8i",
.product_version = MEGASAS_VERSION_GEN2,
.device_id = PCI_DEVICE_ID_LSI_SAS0079,
.subsystem_id = 0x9261,
.ioport_bar = 0,
.mmio_bar = 1,
.osts = MFI_GEN2_RM,
.vmsd = &vmstate_megasas_gen2,
.props = megasas_properties_gen2,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_PCIE_DEVICE },
{ }
},
}
};
static void megasas_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
PCIDeviceClass *pc = PCI_DEVICE_CLASS(oc);
MegasasBaseClass *e = MEGASAS_CLASS(oc);
const MegasasInfo *info = data;
pc->realize = megasas_scsi_realize;
pc->exit = megasas_scsi_uninit;
pc->vendor_id = PCI_VENDOR_ID_LSI_LOGIC;
pc->device_id = info->device_id;
pc->subsystem_vendor_id = PCI_VENDOR_ID_LSI_LOGIC;
pc->subsystem_id = info->subsystem_id;
pc->class_id = PCI_CLASS_STORAGE_RAID;
e->mmio_bar = info->mmio_bar;
e->ioport_bar = info->ioport_bar;
e->osts = info->osts;
e->product_name = info->product_name;
e->product_version = info->product_version;
device_class_set_props(dc, info->props);
dc->reset = megasas_scsi_reset;
dc->vmsd = info->vmsd;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
dc->desc = info->desc;
}
static const TypeInfo megasas_info = {
.name = TYPE_MEGASAS_BASE,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(MegasasState),
.class_size = sizeof(MegasasBaseClass),
.abstract = true,
};
static void megasas_register_types(void)
{
int i;
type_register_static(&megasas_info);
for (i = 0; i < ARRAY_SIZE(megasas_devices); i++) {
const MegasasInfo *info = &megasas_devices[i];
TypeInfo type_info = {};
type_info.name = info->name;
type_info.parent = TYPE_MEGASAS_BASE;
type_info.class_data = (void *)info;
type_info.class_init = megasas_class_init;
type_info.interfaces = info->interfaces;
type_register(&type_info);
}
}
type_init(megasas_register_types)
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