diff options
Diffstat (limited to 'sys/dev/pci/pci.c')
| -rw-r--r-- | sys/dev/pci/pci.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/sys/dev/pci/pci.c b/sys/dev/pci/pci.c index f8af0f9..ff83305 100644 --- a/sys/dev/pci/pci.c +++ b/sys/dev/pci/pci.c @@ -52,6 +52,10 @@ __FBSDID("$FreeBSD$"); #include <sys/rman.h> #include <machine/resource.h> +#if defined(__i386__) || defined(__amd64__) +#include <machine/intr_machdep.h> +#endif + #include <sys/pciio.h> #include <dev/pci/pcireg.h> #include <dev/pci/pcivar.h> @@ -443,6 +447,9 @@ pci_read_extcap(device_t pcib, pcicfgregs *cfg) { #define REG(n, w) PCIB_READ_CONFIG(pcib, cfg->bus, cfg->slot, cfg->func, n, w) #define WREG(n, v, w) PCIB_WRITE_CONFIG(pcib, cfg->bus, cfg->slot, cfg->func, n, v, w) +#if defined(__i386__) || defined(__amd64__) + uint64_t addr; +#endif uint32_t val; int ptr, nextptr, ptrptr; @@ -484,6 +491,29 @@ pci_read_extcap(device_t pcib, pcicfgregs *cfg) cfg->pp.pp_data = ptr + PCIR_POWER_DATA; } break; +#if defined(__i386__) || defined(__amd64__) + case PCIY_HT: /* HyperTransport */ + /* Determine HT-specific capability type. */ + val = REG(ptr + PCIR_HT_COMMAND, 2); + switch (val & PCIM_HTCMD_CAP_MASK) { + case PCIM_HTCAP_MSI_MAPPING: + /* Sanity check the mapping window. */ + addr = REG(ptr + PCIR_HTMSI_ADDRESS_HI, 4); + addr <<= 32; + addr = REG(ptr + PCIR_HTMSI_ADDRESS_LO, 4); + if (addr != MSI_INTEL_ADDR_BASE) + device_printf(pcib, + "HT Bridge at %d:%d:%d has non-default MSI window 0x%llx\n", + cfg->bus, cfg->slot, cfg->func, + (long long)addr); + + /* Enable MSI -> HT mapping. */ + val |= PCIM_HTCMD_MSI_ENABLE; + WREG(ptr + PCIR_HT_COMMAND, val, 2); + break; + } + break; +#endif case PCIY_MSI: /* PCI MSI */ cfg->msi.msi_location = ptr; cfg->msi.msi_ctrl = REG(ptr + PCIR_MSI_CTRL, 2); |
