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[Qemu-devel] [PATCH 6/6] pci: 64bit bar support.
From: |
Isaku Yamahata |
Subject: |
[Qemu-devel] [PATCH 6/6] pci: 64bit bar support. |
Date: |
Tue, 7 Jul 2009 15:59:27 +0900 |
implemented pci 64bit bar support.
Signed-off-by: Isaku Yamahata <address@hidden>
---
hw/pci.c | 47 +++++++++++++++++++++++++++++++++++++++++------
hw/pci.h | 8 ++++++++
2 files changed, 49 insertions(+), 6 deletions(-)
diff --git a/hw/pci.c b/hw/pci.c
index 4f5b6e9..79a66b8 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -411,9 +411,15 @@ void pci_register_bar(PCIDevice *pci_dev, int region_num,
} else {
addr = 0x10 + region_num * 4;
}
+
*(uint32_t *)(pci_dev->config + addr) = cpu_to_le32(type);
- *(uint32_t *)(pci_dev->wmask + addr) = cpu_to_le32(wmask & 0xffffffff);
- *(uint32_t *)(pci_dev->cmask + addr) = 0xffffffff;
+ if (pci_bar_is_64bit(r)) {
+ *(uint64_t *)(pci_dev->wmask + addr) = cpu_to_le64(wmask);
+ *(uint64_t *)(pci_dev->cmask + addr) = ~0ULL;
+ } else {
+ *(uint32_t *)(pci_dev->wmask + addr) = cpu_to_le32(wmask & 0xffffffff);
+ *(uint32_t *)(pci_dev->cmask + addr) = 0xffffffff;
+ }
}
static void pci_update_mappings(PCIDevice *d)
@@ -449,8 +455,14 @@ static void pci_update_mappings(PCIDevice *d)
}
} else {
if (cmd & PCI_COMMAND_MEMORY) {
- new_addr = le32_to_cpu(*(uint32_t *)(d->config +
- config_ofs));
+
+ if (pci_bar_is_64bit(r)) {
+ new_addr = le64_to_cpu(*(uint64_t *)(d->config +
+ config_ofs));
+ } else {
+ new_addr = le32_to_cpu(*(uint32_t *)(d->config +
+ config_ofs));
+ }
/* the ROM slot has a specific enable bit */
if (i == PCI_ROM_SLOT && !(new_addr & 1))
goto no_mem_map;
@@ -465,7 +477,8 @@ static void pci_update_mappings(PCIDevice *d)
/* keep old behaviour
* without this, PC ide doesn't work well. */
- last_addr == PCI_BAR_UNMAPPED32) {
+ (!pci_bar_is_64bit(r) &&
+ last_addr == PCI_BAR_UNMAPPED32)) {
new_addr = PCI_BAR_UNMAPPED;
}
} else {
@@ -722,7 +735,29 @@ static void pci_info_device(PCIDevice *d)
monitor_printf(mon, "I/O at 0x%04"PRIx64" [0x%04"PRIx64"].\n",
r->addr, r->addr + r->size - 1);
} else {
- monitor_printf(mon, "32 bit memory at 0x%08"PRIx64"
[0x%08"PRIx64"].\n",
+ const char *type;
+ const char* prefetch;
+
+ switch (r->type & PCI_ADDRESS_SPACE_MEM_TYPE_MASK) {
+ case PCI_ADDRESS_SPACE_MEM:
+ type = "32 bit";
+ break;
+ case PCI_ADDRESS_SPACE_MEM_64:
+ type = "64 bit";
+ break;
+ default:
+ type = "unknown";
+ break;
+ }
+
+ prefetch = "";
+ if (r->type & PCI_ADDRESS_SPACE_MEM_PREFETCH) {
+ prefetch = " prefetchable";
+ }
+
+ monitor_printf(mon, "%s%s memory at "
+ "0x%08"PRIx64" [0x%08"PRIx64"].\n",
+ type, prefetch,
r->addr, r->addr + r->size - 1);
}
}
diff --git a/hw/pci.h b/hw/pci.h
index 5290176..e4a280f 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -80,6 +80,8 @@ typedef int PCIUnregisterFunc(PCIDevice *pci_dev);
#define PCI_ADDRESS_SPACE_MEM 0x00
#define PCI_ADDRESS_SPACE_IO 0x01
+#define PCI_ADDRESS_SPACE_MEM_64 0x04 /* 64 bit address */
+#define PCI_ADDRESS_SPACE_MEM_TYPE_MASK 0x06
#define PCI_ADDRESS_SPACE_MEM_PREFETCH 0x08
typedef struct PCIIORegion {
@@ -91,6 +93,12 @@ typedef struct PCIIORegion {
PCIMapIORegionFunc *map_func;
} PCIIORegion;
+static inline int pci_bar_is_64bit(const PCIIORegion *r)
+{
+ return (r->type & PCI_ADDRESS_SPACE_MEM_TYPE_MASK) ==
+ PCI_ADDRESS_SPACE_MEM_64;
+}
+
#define PCI_ROM_SLOT 6
#define PCI_NUM_REGIONS 7
--
1.6.0.2
- [Qemu-devel] [PATCH 0/6] pci: various clean up and 64bit bar support., Isaku Yamahata, 2009/07/07
- [Qemu-devel] [PATCH 6/6] pci: 64bit bar support.,
Isaku Yamahata <=
- [Qemu-devel] [PATCH 2/6] pci: use uint8_t for pci_register_bar() type argument of int., Isaku Yamahata, 2009/07/07
- [Qemu-devel] [PATCH 3/6] pci: minor clean up of pci_update_mappings()., Isaku Yamahata, 2009/07/07
- [Qemu-devel] [PATCH 4/6] pci: define a constant to represent a unmapped bar and use it., Isaku Yamahata, 2009/07/07
- [Qemu-devel] [PATCH 1/6] pci.c: remove unnecessary #ifdef DEBUG_PCI., Isaku Yamahata, 2009/07/07
- [Qemu-devel] [PATCH 5/6] pci: use uint64_t for bar addr and size instead of uint32_t., Isaku Yamahata, 2009/07/07