diff options
Diffstat (limited to 'src/hw/scsi/megasas.c')
| -rw-r--r-- | src/hw/scsi/megasas.c | 2547 |
1 files changed, 2547 insertions, 0 deletions
diff --git a/src/hw/scsi/megasas.c b/src/hw/scsi/megasas.c new file mode 100644 index 0000000..576f56c --- /dev/null +++ b/src/hw/scsi/megasas.c @@ -0,0 +1,2547 @@ +/* + * 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 | ((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) { + 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, 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 = 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_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); + 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) |
