Merge remote-tracking branch 'remotes/sstabellini/tags/xen-2015-09-10-tag' into staging

xen-2015-09-10

# gpg: Signature made Thu 10 Sep 2015 17:52:08 BST using RSA key ID 70E1AE90
# gpg: Good signature from "Stefano Stabellini <stefano.stabellini@eu.citrix.com>"

* remotes/sstabellini/tags/xen-2015-09-10-tag: (29 commits)
  xen/pt: Don't slurp wholesale the PCI configuration registers
  xen/pt: Check for return values for xen_host_pci_[get|set] in init
  xen/pt: Move bulk of xen_pt_unregister_device in its own routine.
  xen/pt: Make xen_pt_unregister_device idempotent
  xen/pt: Log xen_host_pci_get/set errors in MSI code.
  xen/pt: Log xen_host_pci_get in two init functions
  xen/pt: Remove XenPTReg->data field.
  xen/pt: Check if reg->init function sets the 'data' past the reg->size
  xen/pt: Sync up the dev.config and data values.
  xen/pt: Use xen_host_pci_get_[byte|word] instead of dev.config
  xen/pt: Use XEN_PT_LOG properly to guard against compiler warnings.
  xen/pt/msi: Add the register value when printing logging and error messages
  xen: use errno instead of rc for xc_domain_add_to_physmap
  xen/pt: xen_host_pci_config_read returns -errno, not -1 on failure
  xen/pt: Make xen_pt_msi_set_enable static
  xen/pt: Update comments with proper function name.
  xen/HVM: atomically access pointers in bufioreq handling
  xen-hvm: When using xc_domain_add_to_physmap also include errno when reporting
  xen, gfx passthrough: add opregion mapping
  xen, gfx passthrough: register host bridge specific to passthrough
  ...

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

1 files changed, 7 insertions, 75 deletions

diff --git a/hw/i386/kvm/pci-assign.c b/hw/i386/kvm/pci-assign.c
index 74d22f4..b1beaa6 100644
--- a/hw/i386/kvm/pci-assign.c
+++ b/hw/i386/kvm/pci-assign.c
@@ -37,6 +37,7 @@
 #include "hw/pci/pci.h"
 #include "hw/pci/msi.h"
 #include "kvm_i386.h"
+#include "hw/pci/pci-assign.h"
 
 #define MSIX_PAGE_SIZE 0x1000
 
@@ -48,17 +49,6 @@
 #define IORESOURCE_PREFETCH 0x00002000  /* No side effects */
 #define IORESOURCE_MEM_64   0x00100000
 
-//#define DEVICE_ASSIGNMENT_DEBUG
-
-#ifdef DEVICE_ASSIGNMENT_DEBUG
-#define DEBUG(fmt, ...)                                       \
-    do {                                                      \
-        fprintf(stderr, "%s: " fmt, __func__ , __VA_ARGS__);  \
-    } while (0)
-#else
-#define DEBUG(fmt, ...)
-#endif
-
 typedef struct PCIRegion {
     int type;           /* Memory or port I/O */
     int valid;
@@ -1896,73 +1886,15 @@ static void assign_register_types(void)
 
 type_init(assign_register_types)
 
-/*
- * Scan the assigned devices for the devices that have an option ROM, and then
- * load the corresponding ROM data to RAM. If an error occurs while loading an
- * option ROM, we just ignore that option ROM and continue with the next one.
- */
 static void assigned_dev_load_option_rom(AssignedDevice *dev)
 {
-    char name[32], rom_file[64];
-    FILE *fp;
-    uint8_t val;
-    struct stat st;
-    void *ptr;
-
-    /* If loading ROM from file, pci handles it */
-    if (dev->dev.romfile || !dev->dev.rom_bar) {
-        return;
-    }
+    int size = 0;
 
-    snprintf(rom_file, sizeof(rom_file),
-             "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/rom",
-             dev->host.domain, dev->host.bus, dev->host.slot,
-             dev->host.function);
+    pci_assign_dev_load_option_rom(&dev->dev, OBJECT(dev), &size,
+                                   dev->host.domain, dev->host.bus,
+                                   dev->host.slot, dev->host.function);
 
-    if (stat(rom_file, &st)) {
-        return;
-    }
-
-    if (access(rom_file, F_OK)) {
-        error_report("pci-assign: Insufficient privileges for %s", rom_file);
-        return;
-    }
-
-    /* Write "1" to the ROM file to enable it */
-    fp = fopen(rom_file, "r+");
-    if (fp == NULL) {
-        return;
+    if (!size) {
+        error_report("pci-assign: Invalid ROM.");
     }
-    val = 1;
-    if (fwrite(&val, 1, 1, fp) != 1) {
-        goto close_rom;
-    }
-    fseek(fp, 0, SEEK_SET);
-
-    snprintf(name, sizeof(name), "%s.rom",
-            object_get_typename(OBJECT(dev)));
-    memory_region_init_ram(&dev->dev.rom, OBJECT(dev), name, st.st_size,
-                           &error_abort);
-    vmstate_register_ram(&dev->dev.rom, &dev->dev.qdev);
-    ptr = memory_region_get_ram_ptr(&dev->dev.rom);
-    memset(ptr, 0xff, st.st_size);
-
-    if (!fread(ptr, 1, st.st_size, fp)) {
-        error_report("pci-assign: Cannot read from host %s", rom_file);
-        error_printf("Device option ROM contents are probably invalid "
-                     "(check dmesg).\nSkip option ROM probe with rombar=0, "
-                     "or load from file with romfile=\n");
-        goto close_rom;
-    }
-
-    pci_register_bar(&dev->dev, PCI_ROM_SLOT, 0, &dev->dev.rom);
-    dev->dev.has_rom = true;
-close_rom:
-    /* Write "0" to disable ROM */
-    fseek(fp, 0, SEEK_SET);
-    val = 0;
-    if (!fwrite(&val, 1, 1, fp)) {
-        DEBUG("%s\n", "Failed to disable pci-sysfs rom file");
-    }
-    fclose(fp);
 }