diff options
Diffstat (limited to 'drivers/bcma/driver_pci.c')
| -rw-r--r-- | drivers/bcma/driver_pci.c | 79 |
1 files changed, 77 insertions, 2 deletions
diff --git a/drivers/bcma/driver_pci.c b/drivers/bcma/driver_pci.c index e757e4e..4fde625 100644 --- a/drivers/bcma/driver_pci.c +++ b/drivers/bcma/driver_pci.c @@ -3,12 +3,13 @@ * PCI Core * * Copyright 2005, Broadcom Corporation - * Copyright 2006, 2007, Michael Buesch <mb@bu3sch.de> + * Copyright 2006, 2007, Michael Buesch <m@bues.ch> * * Licensed under the GNU/GPL. See COPYING for details. */ #include "bcma_private.h" +#include <linux/export.h> #include <linux/bcma/bcma.h> /************************************************** @@ -157,7 +158,81 @@ static void bcma_pcicore_serdes_workaround(struct bcma_drv_pci *pc) * Init. **************************************************/ -void bcma_core_pci_init(struct bcma_drv_pci *pc) +static void bcma_core_pci_clientmode_init(struct bcma_drv_pci *pc) { bcma_pcicore_serdes_workaround(pc); } + +static bool bcma_core_pci_is_in_hostmode(struct bcma_drv_pci *pc) +{ + struct bcma_bus *bus = pc->core->bus; + u16 chipid_top; + + chipid_top = (bus->chipinfo.id & 0xFF00); + if (chipid_top != 0x4700 && + chipid_top != 0x5300) + return false; + +#ifdef CONFIG_SSB_DRIVER_PCICORE + if (bus->sprom.boardflags_lo & SSB_BFL_NOPCI) + return false; +#endif /* CONFIG_SSB_DRIVER_PCICORE */ + +#if 0 + /* TODO: on BCMA we use address from EROM instead of magic formula */ + u32 tmp; + return !mips_busprobe32(tmp, (bus->mmio + + (pc->core->core_index * BCMA_CORE_SIZE))); +#endif + + return true; +} + +void bcma_core_pci_init(struct bcma_drv_pci *pc) +{ + if (pc->setup_done) + return; + + if (bcma_core_pci_is_in_hostmode(pc)) { +#ifdef CONFIG_BCMA_DRIVER_PCI_HOSTMODE + bcma_core_pci_hostmode_init(pc); +#else + pr_err("Driver compiled without support for hostmode PCI\n"); +#endif /* CONFIG_BCMA_DRIVER_PCI_HOSTMODE */ + } else { + bcma_core_pci_clientmode_init(pc); + } + + pc->setup_done = true; +} + +int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc, struct bcma_device *core, + bool enable) +{ + struct pci_dev *pdev = pc->core->bus->host_pci; + u32 coremask, tmp; + int err = 0; + + if (core->bus->hosttype != BCMA_HOSTTYPE_PCI) { + /* This bcma device is not on a PCI host-bus. So the IRQs are + * not routed through the PCI core. + * So we must not enable routing through the PCI core. */ + goto out; + } + + err = pci_read_config_dword(pdev, BCMA_PCI_IRQMASK, &tmp); + if (err) + goto out; + + coremask = BIT(core->core_index) << 8; + if (enable) + tmp |= coremask; + else + tmp &= ~coremask; + + err = pci_write_config_dword(pdev, BCMA_PCI_IRQMASK, tmp); + +out: + return err; +} +EXPORT_SYMBOL_GPL(bcma_core_pci_irq_ctl); |