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qemu-e2k/hw/scsi/megasas.c
Salva Peiró 55875fc4ca megasas: Add write function to handle write access to PCI BAR 3 
This patch fixes a QEMU SEGFAULT when a write operation is performed on
the memory region of the PCI BAR 3 (base address space).
When a writeb(0xe0000000) is performed the .write function is invoked to
handle the write access, however, since the .write is not initialised,
the call to 0, causes QEMU to SEGFAULT.

Signed-off-by: Salva Peiró <speirofr@gmail.com>
Acked-by: Hannes Reinecke <hare@suse.com>
Message-Id: <1437987112-24744-1-git-send-email-speirofr@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-07-27 23:05:49 +02:00

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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 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 "hw/hw.h"
#include "hw/pci/pci.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 "hw/scsi/scsi.h"
#include "block/scsi.h"
#include "trace.h"
#include "mfi.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_MSI 1
#define MEGASAS_MASK_USE_MSI (1 << MEGASAS_FLAG_USE_MSI)
#define MEGASAS_FLAG_USE_MSIX 2
#define MEGASAS_MASK_USE_MSIX (1 << MEGASAS_FLAG_USE_MSIX)
#define MEGASAS_FLAG_USE_QUEUE64 3
#define MEGASAS_MASK_USE_QUEUE64 (1 << MEGASAS_FLAG_USE_QUEUE64)
static const char *mfi_frame_desc[] = {
"MFI init", "LD Read", "LD Write", "LD SCSI", "PD SCSI",
"MFI Doorbell", "MFI Abort", "MFI SMP", "MFI Stop"};
typedef struct MegasasCmd {
uint32_t index;
uint16_t flags;
uint16_t count;
uint64_t context;
hwaddr pa;
hwaddr pa_size;
union mfi_frame *frame;
SCSIRequest *req;
QEMUSGList qsg;
void *iov_buf;
size_t iov_size;
size_t iov_offset;
struct MegasasState *state;
} MegasasCmd;
typedef struct MegasasState {
/*< private >*/
PCIDevice parent_obj;
/*< public >*/
MemoryRegion mmio_io;
MemoryRegion port_io;
MemoryRegion queue_io;
uint32_t frame_hi;
int fw_state;
uint32_t fw_sge;
uint32_t fw_cmds;
uint32_t flags;
int fw_luns;
int intr_mask;
int doorbell;
int busy;
int diag;
int adp_reset;
MegasasCmd *event_cmd;
int event_locale;
int event_class;
int event_count;
int shutdown_event;
int boot_event;
uint64_t sas_addr;
char *hba_serial;
uint64_t reply_queue_pa;
void *reply_queue;
int reply_queue_len;
int reply_queue_head;
int 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;
} MegasasState;
typedef struct MegasasBaseClass {
PCIDeviceClass parent_class;
const char *product_name;
const char *product_version;
int mmio_bar;
int ioport_bar;
int osts;
} MegasasBaseClass;
#define TYPE_MEGASAS_BASE "megasas-base"
#define TYPE_MEGASAS_GEN1 "megasas"
#define TYPE_MEGASAS_GEN2 "megasas-gen2"
#define MEGASAS(obj) \
OBJECT_CHECK(MegasasState, (obj), TYPE_MEGASAS_BASE)
#define MEGASAS_DEVICE_CLASS(oc) \
OBJECT_CLASS_CHECK(MegasasBaseClass, (oc), TYPE_MEGASAS_BASE)
#define MEGASAS_DEVICE_GET_CLASS(oc) \
OBJECT_GET_CLASS(MegasasBaseClass, (oc), 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_msi(MegasasState *s)
{
return s->flags & MEGASAS_MASK_USE_MSI;
}
static bool megasas_use_msix(MegasasState *s)
{
return s->flags & MEGASAS_MASK_USE_MSIX;
}
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);
}
/*
* 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 > MEGASAS_MAX_SGE) {
trace_megasas_iovec_sgl_overflow(cmd->index, iov_count,
MEGASAS_MAX_SGE);
return iov_count;
}
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->iov_size, iov_size, cmd->iov_size);
}
cmd->iov_offset = 0;
return 0;
unmap:
qemu_sglist_destroy(&cmd->qsg);
return iov_count - i;
}
static void megasas_unmap_sgl(MegasasCmd *cmd)
{
qemu_sglist_destroy(&cmd->qsg);
cmd->iov_offset = 0;
}
/*
* 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;
if (sense_len > cmd->frame->header.sense_len) {
sense_len = cmd->frame->header.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;
uint64_t bcd_time;
qemu_get_timedate(&curtime, 0);
bcd_time = ((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);
return bcd_time;
}
/*
* 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 & (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) {
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);
pci_dma_unmap(p, cmd->frame, cmd->pa_size, 0, 0);
cmd->frame = NULL;
cmd->pa = 0;
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 = MFI_FRAME_SIZE * 16;
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 (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;
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_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)
{
if (cmd->req) {
scsi_req_cancel(cmd->req);
cmd->req = NULL;
}
}
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_tail = ldl_le_pci_dma(pcid, s->consumer_pa);
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;
cmd->flags = le16_to_cpu(cmd->frame->header.flags);
if (!cmd->frame->header.sge_count) {
trace_megasas_dcmd_zero_sge(cmd->index);
cmd->iov_size = 0;
return 0;
} else if (cmd->frame->header.sge_count > 1) {
trace_megasas_dcmd_invalid_sge(cmd->index,
cmd->frame->header.sge_count);
cmd->iov_size = 0;
return -1;
}
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 cmd->iov_size;
}
static void megasas_finish_dcmd(MegasasCmd *cmd, uint32_t iov_size)
{
trace_megasas_finish_dcmd(cmd->index, iov_size);
if (cmd->frame->header.sge_count) {
qemu_sglist_destroy(&cmd->qsg);
}
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);
}
}
cmd->iov_size = 0;
}
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_DEVICE_GET_CLASS(s);
struct mfi_ctrl_info info;
size_t dcmd_size = sizeof(info);
BusChild *kid;
int num_pd_disks = 0;
memset(&info, 0x0, cmd->iov_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 = DO_UPCAST(SCSIDevice, qdev, 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_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);
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 = DO_UPCAST(SCSIDevice, qdev, 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];
SCSIRequest *req;
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));
req = scsi_req_new(sdev, cmd->index, lun, cmdbuf, cmd);
if (!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(req);
if (len > 0) {
cmd->iov_size = len;
scsi_req_continue(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));
req = scsi_req_new(sdev, cmd->index, lun, cmdbuf, cmd);
if (!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(req);
if (len > 0) {
cmd->iov_size = len;
scsi_req_continue(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 = DO_UPCAST(SCSIDevice, qdev, 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 = DO_UPCAST(SCSIDevice, qdev, 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];
SCSIRequest *req;
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));
req = scsi_req_new(sdev, cmd->index, lun, cdb, cmd);
if (!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(req);
if (len > 0) {
cmd->iov_size = len;
scsi_req_continue(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];
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 = DO_UPCAST(SCSIDevice, qdev, 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, cmd->iov_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 opcode, len;
int retval = 0;
const struct dcmd_cmd_tbl_t *cmdptr = dcmd_cmd_tbl;
opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
trace_megasas_handle_dcmd(cmd->index, opcode);
len = megasas_map_dcmd(s, cmd);
if (len < 0) {
return MFI_STAT_MEMORY_NOT_AVAILABLE;
}
while (cmdptr->opcode != -1 && cmdptr->opcode != opcode) {
cmdptr++;
}
if (cmdptr->opcode == -1) {
trace_megasas_dcmd_unhandled(cmd->index, 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)
{
int opcode;
int retval = MFI_STAT_OK;
int lun = req->lun;
opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
scsi_req_unref(req);
trace_megasas_dcmd_internal_finish(cmd->index, opcode, lun);
switch (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, 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,
bool is_logical)
{
uint8_t *cdb;
bool is_write;
struct SCSIDevice *sdev = NULL;
cdb = cmd->frame->pass.cdb;
if (is_logical) {
if (cmd->frame->header.target_id >= MFI_MAX_LD ||
cmd->frame->header.lun_id != 0) {
trace_megasas_scsi_target_not_present(
mfi_frame_desc[cmd->frame->header.frame_cmd], is_logical,
cmd->frame->header.target_id, cmd->frame->header.lun_id);
return MFI_STAT_DEVICE_NOT_FOUND;
}
}
sdev = scsi_device_find(&s->bus, 0, cmd->frame->header.target_id,
cmd->frame->header.lun_id);
cmd->iov_size = le32_to_cpu(cmd->frame->header.data_len);
trace_megasas_handle_scsi(mfi_frame_desc[cmd->frame->header.frame_cmd],
is_logical, cmd->frame->header.target_id,
cmd->frame->header.lun_id, sdev, cmd->iov_size);
if (!sdev || (megasas_is_jbod(s) && is_logical)) {
trace_megasas_scsi_target_not_present(
mfi_frame_desc[cmd->frame->header.frame_cmd], is_logical,
cmd->frame->header.target_id, cmd->frame->header.lun_id);
return MFI_STAT_DEVICE_NOT_FOUND;
}
if (cmd->frame->header.cdb_len > 16) {
trace_megasas_scsi_invalid_cdb_len(
mfi_frame_desc[cmd->frame->header.frame_cmd], is_logical,
cmd->frame->header.target_id, cmd->frame->header.lun_id,
cmd->frame->header.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,
cmd->frame->header.lun_id, cdb, cmd);
if (!cmd->req) {
trace_megasas_scsi_req_alloc_failed(
mfi_frame_desc[cmd->frame->header.frame_cmd],
cmd->frame->header.target_id, cmd->frame->header.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)
{
uint32_t lba_count, lba_start_hi, lba_start_lo;
uint64_t lba_start;
bool is_write = (cmd->frame->header.frame_cmd == MFI_CMD_LD_WRITE);
uint8_t cdb[16];
int len;
struct SCSIDevice *sdev = NULL;
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;
if (cmd->frame->header.target_id < MFI_MAX_LD &&
cmd->frame->header.lun_id == 0) {
sdev = scsi_device_find(&s->bus, 0, cmd->frame->header.target_id,
cmd->frame->header.lun_id);
}
trace_megasas_handle_io(cmd->index,
mfi_frame_desc[cmd->frame->header.frame_cmd],
cmd->frame->header.target_id,
cmd->frame->header.lun_id,
(unsigned long)lba_start, (unsigned long)lba_count);
if (!sdev) {
trace_megasas_io_target_not_present(cmd->index,
mfi_frame_desc[cmd->frame->header.frame_cmd],
cmd->frame->header.target_id, cmd->frame->header.lun_id);
return MFI_STAT_DEVICE_NOT_FOUND;
}
if (cmd->frame->header.cdb_len > 16) {
trace_megasas_scsi_invalid_cdb_len(
mfi_frame_desc[cmd->frame->header.frame_cmd], 1,
cmd->frame->header.target_id, cmd->frame->header.lun_id,
cmd->frame->header.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,
cmd->frame->header.lun_id, cdb, cmd);
if (!cmd->req) {
trace_megasas_scsi_req_alloc_failed(
mfi_frame_desc[cmd->frame->header.frame_cmd],
cmd->frame->header.target_id, cmd->frame->header.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 int megasas_finish_internal_command(MegasasCmd *cmd,
SCSIRequest *req, size_t resid)
{
int retval = MFI_STAT_INVALID_CMD;
if (cmd->frame->header.frame_cmd == MFI_CMD_DCMD) {
cmd->iov_size -= resid;
retval = megasas_finish_internal_dcmd(cmd, req);
}
return retval;
}
static QEMUSGList *megasas_get_sg_list(SCSIRequest *req)
{
MegasasCmd *cmd = req->hba_private;
if (cmd->frame->header.frame_cmd == MFI_CMD_DCMD) {
return NULL;
} else {
return &cmd->qsg;
}
}
static void megasas_xfer_complete(SCSIRequest *req, uint32_t len)
{
MegasasCmd *cmd = req->hba_private;
uint8_t *buf;
uint32_t opcode;
trace_megasas_io_complete(cmd->index, len);
if (cmd->frame->header.frame_cmd != MFI_CMD_DCMD) {
scsi_req_continue(req);
return;
}
buf = scsi_req_get_buf(req);
opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
if (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 (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, uint32_t status,
size_t resid)
{
MegasasCmd *cmd = req->hba_private;
uint8_t cmd_status = MFI_STAT_OK;
trace_megasas_command_complete(cmd->index, status, resid);
if (cmd->req != req) {
/*
* Internal command complete
*/
cmd_status = megasas_finish_internal_command(cmd, req, resid);
if (cmd_status == MFI_STAT_INVALID_STATUS) {
return;
}
} else {
req->status = status;
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);
}
megasas_unmap_sgl(cmd);
cmd->frame->header.scsi_status = req->status;
scsi_req_unref(cmd->req);
cmd->req = NULL;
}
cmd->frame->header.cmd_status = cmd_status;
megasas_unmap_frame(cmd->state, cmd);
megasas_complete_frame(cmd->state, cmd->context);
}
static void megasas_command_cancel(SCSIRequest *req)
{
MegasasCmd *cmd = req->hba_private;
if (cmd) {
megasas_abort_command(cmd);
} else {
scsi_req_unref(req);
}
}
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->index,
abort_cmd->context);
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;
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;
}
switch (cmd->frame->header.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:
frame_status = megasas_handle_scsi(s, cmd, 0);
break;
case MFI_CMD_LD_SCSI_IO:
frame_status = megasas_handle_scsi(s, cmd, 1);
break;
case MFI_CMD_LD_READ:
case MFI_CMD_LD_WRITE:
frame_status = megasas_handle_io(s, cmd);
break;
default:
trace_megasas_unhandled_frame_cmd(cmd->index,
cmd->frame->header.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_DEVICE_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) {
s->adp_reset++;
} else {
s->adp_reset = 0;
s->diag = 0;
}
if (s->adp_reset == 6) {
s->diag = MFI_DIAG_WRITE_ENABLE;
}
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 = DO_UPCAST(SCSIDevice, qdev, 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_INT32(fw_state, MegasasState),
VMSTATE_INT32(intr_mask, MegasasState),
VMSTATE_INT32(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_PCIE_DEVICE(parent_obj, MegasasState),
VMSTATE_MSIX(parent_obj, MegasasState),
VMSTATE_INT32(fw_state, MegasasState),
VMSTATE_INT32(intr_mask, MegasasState),
VMSTATE_INT32(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);
}
if (megasas_use_msi(s)) {
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_cancel,
};
static void megasas_scsi_realize(PCIDevice *dev, Error **errp)
{
DeviceState *d = DEVICE(dev);
MegasasState *s = MEGASAS(dev);
MegasasBaseClass *b = MEGASAS_DEVICE_GET_CLASS(s);
uint8_t *pci_conf;
int i, bar_type;
pci_conf = dev->config;
/* PCI latency timer = 0 */
pci_conf[PCI_LATENCY_TIMER] = 0;
/* Interrupt pin 1 */
pci_conf[PCI_INTERRUPT_PIN] = 0x01;
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_msi(s) &&
msi_init(dev, 0x50, 1, true, false)) {
s->flags &= ~MEGASAS_MASK_USE_MSI;
}
if (megasas_use_msix(s) &&
msix_init(dev, 15, &s->mmio_io, b->mmio_bar, 0x2000,
&s->mmio_io, b->mmio_bar, 0x3800, 0x68)) {
s->flags &= ~MEGASAS_MASK_USE_MSIX;
}
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_bus_num(dev->bus) << 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_new(&s->bus, sizeof(s->bus), DEVICE(dev),
&megasas_scsi_info, NULL);
if (!d->hotplugged) {
scsi_bus_legacy_handle_cmdline(&s->bus, errp);
}
}
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_BIT("use_msi", MegasasState, flags,
MEGASAS_FLAG_USE_MSI, false),
DEFINE_PROP_BIT("use_msix", MegasasState, flags,
MEGASAS_FLAG_USE_MSIX, false),
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_BIT("use_msi", MegasasState, flags,
MEGASAS_FLAG_USE_MSI, true),
DEFINE_PROP_BIT("use_msix", MegasasState, flags,
MEGASAS_FLAG_USE_MSIX, true),
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;
bool is_express;
int osts;
const VMStateDescription *vmsd;
Property *props;
} 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,
.is_express = false,
.vmsd = &vmstate_megasas_gen1,
.props = megasas_properties_gen1,
},{
.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,
.is_express = true,
.vmsd = &vmstate_megasas_gen2,
.props = megasas_properties_gen2,
}
};
static void megasas_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
PCIDeviceClass *pc = PCI_DEVICE_CLASS(oc);
MegasasBaseClass *e = MEGASAS_DEVICE_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;
pc->is_express = info->is_express;
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;
dc->props = 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_register(&type_info);
}
}
type_init(megasas_register_types)
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