Merge remote-tracking branch 'remotes/bonzini/scsi-next' into staging

* remotes/bonzini/scsi-next:
  [PATCH] block/iscsi: bump year in copyright notice
  block/iscsi: allow cluster_size of 4K and greater
  block/iscsi: clarify the meaning of ISCSI_CHECKALLOC_THRES
  block/iscsi: speed up read for unallocated sectors
  block/iscsi: allow fall back to WRITE SAME without UNMAP
  MAINTAINERS: mark megasas as maintained
  megasas: Add MSI support
  megasas: Enable MSI-X support
  megasas: Implement LD_LIST_QUERY
  scsi: Improve error messages more
  scsi-disk: Improve error messager if can't get version number

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

4 files changed, 90 insertions, 24 deletions

diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c
index e6e1ffd1bb..baee46f981 100644
--- a/hw/scsi/megasas.c
+++ b/hw/scsi/megasas.c
@@ -21,6 +21,7 @@
 #include "hw/hw.h"
 #include "hw/pci/pci.h"
 #include "sysemu/dma.h"
+#include "hw/pci/msi.h"
 #include "hw/pci/msix.h"
 #include "qemu/iov.h"
 #include "hw/scsi/scsi.h"
@@ -43,9 +44,11 @@
 
 #define MEGASAS_FLAG_USE_JBOD      0
 #define MEGASAS_MASK_USE_JBOD      (1 << MEGASAS_FLAG_USE_JBOD)
-#define MEGASAS_FLAG_USE_MSIX      1
+#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   2
+#define MEGASAS_FLAG_USE_QUEUE64   3
 #define MEGASAS_MASK_USE_QUEUE64   (1 << MEGASAS_FLAG_USE_QUEUE64)
 
 static const char *mfi_frame_desc[] = {
@@ -132,6 +135,11 @@ 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;
@@ -538,6 +546,9 @@ static void megasas_complete_frame(MegasasState *s, uint64_t context)
             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 {
                 trace_megasas_irq_raise();
                 pci_irq_assert(pci_dev);
@@ -1106,6 +1117,21 @@ static int megasas_dcmd_ld_get_list(MegasasState *s, MegasasCmd *cmd)
     return MFI_STAT_OK;
 }
 
+static int megasas_dcmd_ld_list_query(MegasasState *s, MegasasCmd *cmd)
+{
+    uint16_t flags;
+
+    /* 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) {
+        return megasas_dcmd_ld_get_list(s, cmd);
+    }
+
+    return MFI_STAT_OK;
+}
+
 static int megasas_ld_get_info_submit(SCSIDevice *sdev, int lun,
                                       MegasasCmd *cmd)
 {
@@ -1409,6 +1435,8 @@ static const struct dcmd_cmd_tbl_t {
       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",
@@ -1939,12 +1967,20 @@ static void megasas_mmio_write(void *opaque, hwaddr addr,
         break;
     case MFI_OMSK:
         s->intr_mask = val;
-        if (!megasas_intr_enabled(s) && !msix_enabled(pci_dev)) {
+        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)) {
-            trace_megasas_intr_enabled();
+            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();
         }
@@ -2068,6 +2104,7 @@ static const VMStateDescription vmstate_megasas = {
     .minimum_version_id_old = 0,
     .fields      = (VMStateField[]) {
         VMSTATE_PCI_DEVICE(parent_obj, MegasasState),
+        VMSTATE_MSIX(parent_obj, MegasasState),
 
         VMSTATE_INT32(fw_state, MegasasState),
         VMSTATE_INT32(intr_mask, MegasasState),
@@ -2083,9 +2120,12 @@ static void megasas_scsi_uninit(PCIDevice *d)
 {
     MegasasState *s = MEGASAS(d);
 
-#ifdef USE_MSIX
-    msix_uninit(d, &s->mmio_io);
-#endif
+    if (megasas_use_msix(s)) {
+        msix_uninit(d, &s->mmio_io, &s->mmio_io);
+    }
+    if (megasas_use_msi(s)) {
+        msi_uninit(d);
+    }
     memory_region_destroy(&s->mmio_io);
     memory_region_destroy(&s->port_io);
     memory_region_destroy(&s->queue_io);
@@ -2124,15 +2164,15 @@ static int megasas_scsi_init(PCIDevice *dev)
     memory_region_init_io(&s->queue_io, OBJECT(s), &megasas_queue_ops, s,
                           "megasas-queue", 0x40000);
 
-#ifdef USE_MSIX
-    /* MSI-X support is currently broken */
+    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, 0, 0x2000)) {
+        msix_init(dev, 15, &s->mmio_io, 0, 0x2000,
+                  &s->mmio_io, 0, 0x3800, 0x68)) {
         s->flags &= ~MEGASAS_MASK_USE_MSIX;
     }
-#else
-    s->flags &= ~MEGASAS_MASK_USE_MSIX;
-#endif
 
     bar_type = PCI_BASE_ADDRESS_SPACE_MEMORY | PCI_BASE_ADDRESS_MEM_TYPE_64;
     pci_register_bar(dev, 0, bar_type, &s->mmio_io);
@@ -2151,7 +2191,7 @@ static int megasas_scsi_init(PCIDevice *dev)
         s->sas_addr |= PCI_FUNC(dev->devfn);
     }
     if (!s->hba_serial) {
-	s->hba_serial = g_strdup(MEGASAS_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;
@@ -2164,7 +2204,6 @@ static int megasas_scsi_init(PCIDevice *dev)
         s->fw_cmds = MEGASAS_MAX_FRAMES;
     }
     trace_megasas_init(s->fw_sge, s->fw_cmds,
-                       megasas_use_msix(s) ? "MSI-X" : "INTx",
                        megasas_is_jbod(s) ? "jbod" : "raid");
     s->fw_luns = (MFI_MAX_LD > MAX_SCSI_DEVS) ?
         MAX_SCSI_DEVS : MFI_MAX_LD;
@@ -2189,6 +2228,13 @@ static int megasas_scsi_init(PCIDevice *dev)
     return 0;
 }
 
+static void
+megasas_write_config(PCIDevice *pci, uint32_t addr, uint32_t val, int len)
+{
+    pci_default_write_config(pci, addr, val, len);
+    msi_write_config(pci, addr, val, len);
+}
+
 static Property megasas_properties[] = {
     DEFINE_PROP_UINT32("max_sge", MegasasState, fw_sge,
                        MEGASAS_DEFAULT_SGE),
@@ -2196,10 +2242,10 @@ static Property megasas_properties[] = {
                        MEGASAS_DEFAULT_FRAMES),
     DEFINE_PROP_STRING("hba_serial", MegasasState, hba_serial),
     DEFINE_PROP_UINT64("sas_address", MegasasState, sas_addr, 0),
-#ifdef USE_MSIX
+    DEFINE_PROP_BIT("use_msi", MegasasState, flags,
+                    MEGASAS_FLAG_USE_MSI, false),
     DEFINE_PROP_BIT("use_msix", MegasasState, flags,
                     MEGASAS_FLAG_USE_MSIX, false),
-#endif
     DEFINE_PROP_BIT("use_jbod", MegasasState, flags,
                     MEGASAS_FLAG_USE_JBOD, false),
     DEFINE_PROP_END_OF_LIST(),
@@ -2222,6 +2268,7 @@ static void megasas_class_init(ObjectClass *oc, void *data)
     dc->vmsd = &vmstate_megasas;
     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
     dc->desc = "LSI MegaRAID SAS 1078";
+    pc->config_write = megasas_write_config;
 }
 
 static const TypeInfo megasas_info = {
diff --git a/hw/scsi/mfi.h b/hw/scsi/mfi.h
index cd8355badf..a3034f6239 100644
--- a/hw/scsi/mfi.h
+++ b/hw/scsi/mfi.h
@@ -164,6 +164,7 @@ typedef enum {
     MFI_DCMD_PD_BLINK =                 0x02070100,
     MFI_DCMD_PD_UNBLINK =               0x02070200,
     MFI_DCMD_LD_GET_LIST =              0x03010000,
+    MFI_DCMD_LD_LIST_QUERY =            0x03010100,
     MFI_DCMD_LD_GET_INFO =              0x03020000,
     MFI_DCMD_LD_GET_PROP =              0x03030000,
     MFI_DCMD_LD_SET_PROP =              0x03040000,
@@ -411,6 +412,14 @@ typedef enum {
     MR_PD_QUERY_TYPE_EXPOSED_TO_HOST =  5, /*query for system drives */
 } mfi_pd_query_type;
 
+typedef enum {
+    MR_LD_QUERY_TYPE_ALL =              0,
+    MR_LD_QUERY_TYPE_EXPOSED_TO_HOST =  1,
+    MR_LD_QUERY_TYPE_USED_TGT_IDS =     2,
+    MR_LD_QUERY_TYPE_CLUSTER_ACCESS =   3,
+    MR_LD_QUERY_TYPE_CLUSTER_LOCALE =   4,
+} mfi_ld_query_type;
+
 /*
  * Other propertities and definitions
  */
diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c
index 48a28ae199..4bcef551a6 100644
--- a/hw/scsi/scsi-disk.c
+++ b/hw/scsi/scsi-disk.c
@@ -2458,21 +2458,27 @@ static int scsi_block_initfn(SCSIDevice *dev)
     int rc;
 
     if (!s->qdev.conf.bs) {
-        error_report("scsi-block: drive property not set");
+        error_report("drive property not set");
         return -1;
     }
 
     /* check we are using a driver managing SG_IO (version 3 and after) */
-    if (bdrv_ioctl(s->qdev.conf.bs, SG_GET_VERSION_NUM, &sg_version) < 0 ||
-        sg_version < 30000) {
-        error_report("scsi-block: scsi generic interface too old");
+    rc = bdrv_ioctl(s->qdev.conf.bs, SG_GET_VERSION_NUM, &sg_version);
+    if (rc < 0) {
+        error_report("cannot get SG_IO version number: %s.  "
+                     "Is this a SCSI device?",
+                     strerror(-rc));
+        return -1;
+    }
+    if (sg_version < 30000) {
+        error_report("scsi generic interface too old");
         return -1;
     }
 
     /* get device type from INQUIRY data */
     rc = get_device_type(s);
     if (rc < 0) {
-        error_report("scsi-block: INQUIRY failed");
+        error_report("INQUIRY failed");
         return -1;
     }
 
diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c
index 8d92e0da15..3733d2c36c 100644
--- a/hw/scsi/scsi-generic.c
+++ b/hw/scsi/scsi-generic.c
@@ -394,6 +394,7 @@ static void scsi_destroy(SCSIDevice *s)
 
 static int scsi_generic_initfn(SCSIDevice *s)
 {
+    int rc;
     int sg_version;
     struct sg_scsi_id scsiid;
 
@@ -412,8 +413,11 @@ static int scsi_generic_initfn(SCSIDevice *s)
     }
 
     /* check we are using a driver managing SG_IO (version 3 and after */
-    if (bdrv_ioctl(s->conf.bs, SG_GET_VERSION_NUM, &sg_version) < 0) {
-        error_report("scsi generic interface not supported");
+    rc = bdrv_ioctl(s->conf.bs, SG_GET_VERSION_NUM, &sg_version);
+    if (rc < 0) {
+        error_report("cannot get SG_IO version number: %s.  "
+                     "Is this a SCSI device?",
+                     strerror(-rc));
         return -1;
     }
     if (sg_version < 30000) {