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bcma: add PCIe host controller

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Some SoCs have a PCIe host controller to make it possible to attach
some other devices to it, like an other Wifi card.
This code was tested with an Netgear WNDR3400 (bcm4716 based), but
should work with all bcma based SoCs.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Hauke Mehrtens
2012-01-31 00:03:35 +01:00
committed by John W. Linville
parent d1a7a8e1d3
commit 49dc957715
6 changed files with 691 additions and 40 deletions
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38
drivers/bcma/driver_pci.c
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@@ -2,7 +2,7 @@
* Broadcom specific AMBA
* PCI Core
*
* Copyright 2005, Broadcom Corporation
* Copyright 2005, 2011, Broadcom Corporation
* Copyright 2006, 2007, Michael Buesch <m@bues.ch>
* Copyright 2011, 2012, Hauke Mehrtens <hauke@hauke-m.de>
*
@@ -179,47 +179,19 @@ static void __devinit bcma_core_pci_clientmode_init(struct bcma_drv_pci *pc)
bcma_pcicore_serdes_workaround(pc);
}
static bool __devinit 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 __devinit 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
pc->hostmode = bcma_core_pci_is_in_hostmode(pc);
if (pc->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;
if (!pc->hostmode)
bcma_core_pci_clientmode_init(pc);
}
int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc, struct bcma_device *core,