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| author | Chris Metcalf <cmetcalf@tilera.com> | 2013-08-05 13:32:52 -0400 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2013-08-06 12:55:56 -0400 |
| commit | 8d9e53b93de7383d5bb4b3507f146bfcd83c6e5d (patch) | |
| tree | 7a54bc1d199b384f0b58263e71489a0d9aed5dea /arch/tile | |
| parent | eafa5c8a10f52e5d05870a40e2ffb49537d4471f (diff) | |
| download | linux-8d9e53b93de7383d5bb4b3507f146bfcd83c6e5d.tar.bz2 | |
tile PCI RC: use proper accessor function
Using the low-level hv_dev_pread() API makes assumptions about the
layout of datastructures in the Tilera hypervisor API; it's better to
use the gxio_XXX accessor and the pcie_trio_ports_property struct.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile')
| -rw-r--r-- | arch/tile/kernel/pci_gx.c | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/arch/tile/kernel/pci_gx.c b/arch/tile/kernel/pci_gx.c index 8352d85ab818..de5008b72fa3 100644 --- a/arch/tile/kernel/pci_gx.c +++ b/arch/tile/kernel/pci_gx.c @@ -91,7 +91,7 @@ static int rc_delay[TILEGX_NUM_TRIO][TILEGX_TRIO_PCIES]; TRIO_PCIE_INTFC_PORT_CONFIG__STRAP_STATE_VAL_AUTO_CONFIG_ENDPOINT_G1 /* Array of the PCIe ports configuration info obtained from the BIB. */ -struct pcie_port_property pcie_ports[TILEGX_NUM_TRIO][TILEGX_TRIO_PCIES]; +struct pcie_trio_ports_property pcie_ports[TILEGX_NUM_TRIO]; /* Number of configured TRIO instances. */ int num_trio_shims; @@ -195,10 +195,7 @@ static int tile_pcie_open(int trio_index) #endif /* Get the properties of the PCIe ports on this TRIO instance. */ - ret = hv_dev_pread(context->fd, 0, - (HV_VirtAddr)&pcie_ports[trio_index][0], - sizeof(struct pcie_port_property) * TILEGX_TRIO_PCIES, - GXIO_TRIO_OP_GET_PORT_PROPERTY); + ret = gxio_trio_get_port_property(context, &pcie_ports[trio_index]); if (ret < 0) { pr_err("PCI: PCIE_GET_PORT_PROPERTY failure, error %d," " on TRIO %d\n", ret, trio_index); @@ -221,8 +218,8 @@ static int tile_pcie_open(int trio_index) unsigned int reg_offset; /* Ignore ports that are not specified in the BIB. */ - if (!pcie_ports[trio_index][mac].allow_rc && - !pcie_ports[trio_index][mac].allow_ep) + if (!pcie_ports[trio_index].ports[mac].allow_rc && + !pcie_ports[trio_index].ports[mac].allow_ep) continue; reg_offset = @@ -243,7 +240,7 @@ static int tile_pcie_open(int trio_index) */ if (port_config.strap_state == AUTO_CONFIG_EP || port_config.strap_state == AUTO_CONFIG_EP_G1) - pcie_ports[trio_index][mac].allow_ep = 1; + pcie_ports[trio_index].ports[mac].allow_ep = 1; } } @@ -438,9 +435,10 @@ int __init tile_pci_init(void) return 0; /* - * Now determine which PCIe ports are configured to operate in RC mode. - * We look at the Board Information Block first and then see if there - * are any overriding configuration by the HW strapping pin. + * Now determine which PCIe ports are configured to operate in RC + * mode. To use a port, it must be allowed to be in RC mode by the + * Board Information Block, and the hardware strapping pins must be + * set to RC mode. */ for (i = 0; i < TILEGX_NUM_TRIO; i++) { gxio_trio_context_t *context = &trio_contexts[i]; @@ -449,7 +447,7 @@ int __init tile_pci_init(void) continue; for (j = 0; j < TILEGX_TRIO_PCIES; j++) { - if (pcie_ports[i][j].allow_rc && + if (pcie_ports[i].ports[j].allow_rc && strapped_for_rc(context, j)) { pcie_rc[i][j] = 1; num_rc_controllers++; @@ -736,7 +734,7 @@ int __init pcibios_init(void) __gxio_mmio_read(trio_context->mmio_base_mac + reg_offset); if (!port_status.dl_up) { - if (pcie_ports[trio_index][mac].removable) { + if (pcie_ports[trio_index].ports[mac].removable) { pr_info("PCI: link is down, MAC %d on TRIO %d\n", mac, trio_index); pr_info("This is expected if no PCIe card" |