diff options
| author | Isaku Yamahata <yamahata@valinux.co.jp> | 2009-10-30 21:21:11 +0900 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2009-11-09 08:43:09 -0600 |
| commit | 1442125843baabc053b71684c85ddb02b9080d6c (patch) | |
| tree | 13dccdda97ea7c2085da6e14da448de8b692067d /hw | |
| parent | 4f8589e11558f1151d95a4a3e9fce902f042df3d (diff) | |
pci: 64bit bar support.
implemented pci 64bit bar support.
The tricky bit is pci_update_mapping().
An OS is allowed to set the BAR such that OS can't address the area
pointed by BAR. It doesn't make sense, though.
In that case, don't map the BAR.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/pci.c | 35 | ||||
| -rw-r--r-- | hw/pci.h | 1 |
2 files changed, 31 insertions, 5 deletions
@@ -484,8 +484,14 @@ void pci_register_bar(PCIDevice *pci_dev, int region_num, wmask |= PCI_ROM_ADDRESS_ENABLE; } pci_set_long(pci_dev->config + addr, type); - pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff); - pci_set_long(pci_dev->cmask + addr, 0xffffffff); + if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) && + r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) { + pci_set_quad(pci_dev->wmask + addr, wmask); + pci_set_quad(pci_dev->cmask + addr, ~0ULL); + } else { + pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff); + pci_set_long(pci_dev->cmask + addr, 0xffffffff); + } } static void pci_update_mappings(PCIDevice *d) @@ -513,7 +519,11 @@ static void pci_update_mappings(PCIDevice *d) } } else { if (cmd & PCI_COMMAND_MEMORY) { - new_addr = pci_get_long(d->config + pci_bar(d, i)); + if (r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) { + new_addr = pci_get_quad(d->config + pci_bar(d, i)); + } else { + new_addr = pci_get_long(d->config + pci_bar(d, i)); + } /* the ROM slot has a specific enable bit */ if (i == PCI_ROM_SLOT && !(new_addr & PCI_ROM_ADDRESS_ENABLE)) goto no_mem_map; @@ -531,7 +541,15 @@ static void pci_update_mappings(PCIDevice *d) * Without this, PC ide doesn't work well. * TODO: remove this work around. */ - last_addr >= UINT32_MAX) { + (!(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) && + last_addr >= UINT32_MAX) || + + /* + * OS is allowed to set BAR beyond its addressable + * bits. For example, 32 bit OS can set 64bit bar + * to >4G. Check it. + */ + last_addr >= TARGET_PHYS_ADDR_MAX) { new_addr = PCI_BAR_UNMAPPED; } } else { @@ -773,8 +791,15 @@ static void pci_info_device(PCIDevice *d) " [0x%04"FMT_PCIBUS"].\n", r->addr, r->addr + r->size - 1); } else { - monitor_printf(mon, "32 bit memory at 0x%08"FMT_PCIBUS + const char *type = r->type & PCI_BASE_ADDRESS_MEM_TYPE_64 ? + "64 bit" : "32 bit"; + const char *prefetch = + r->type & PCI_BASE_ADDRESS_MEM_PREFETCH ? + " prefetchable" : ""; + + monitor_printf(mon, "%s%s memory at 0x%08"FMT_PCIBUS " [0x%08"FMT_PCIBUS"].\n", + type, prefetch, r->addr, r->addr + r->size - 1); } } @@ -114,6 +114,7 @@ typedef struct PCIIORegion { #define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */ #define PCI_BASE_ADDRESS_SPACE_IO 0x01 #define PCI_BASE_ADDRESS_SPACE_MEMORY 0x00 +#define PCI_BASE_ADDRESS_MEM_TYPE_64 0x04 /* 64 bit address */ #define PCI_BASE_ADDRESS_MEM_PREFETCH 0x08 /* prefetchable? */ #define PCI_PRIMARY_BUS 0x18 /* Primary bus number */ #define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */ |