diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.0/0008-bcma-add-pci-e-host-mode.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.0/0008-bcma-add-pci-e-host-mode.patch | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.0/0008-bcma-add-pci-e-host-mode.patch b/target/linux/brcm47xx/patches-3.0/0008-bcma-add-pci-e-host-mode.patch new file mode 100644 index 0000000000..48c18bb0b2 --- /dev/null +++ b/target/linux/brcm47xx/patches-3.0/0008-bcma-add-pci-e-host-mode.patch @@ -0,0 +1,140 @@ +From f93062e72447b4a4a51afbe33ea086ce8c922587 Mon Sep 17 00:00:00 2001 +From: Hauke Mehrtens <hauke@hauke-m.de> +Date: Sun, 19 Jun 2011 17:52:09 +0200 +Subject: [PATCH 08/14] bcma: add pci(e) host mode + +This adds some stub for a pci(e) host controller. This controller is +found on some embedded devices to attach other chips. + +Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> +--- + drivers/bcma/Kconfig | 6 ++++ + drivers/bcma/Makefile | 1 + + drivers/bcma/bcma_private.h | 6 ++++ + drivers/bcma/driver_pci.c | 14 ++++++++++- + drivers/bcma/driver_pci_host.c | 43 ++++++++++++++++++++++++++++++++++ + include/linux/bcma/bcma_driver_pci.h | 1 + + 6 files changed, 70 insertions(+), 1 deletions(-) + create mode 100644 drivers/bcma/driver_pci_host.c + +--- a/drivers/bcma/Kconfig ++++ b/drivers/bcma/Kconfig +@@ -32,6 +32,12 @@ config BCMA_HOST_SOC + depends on BCMA_DRIVER_MIPS + default n + ++config BCMA_DRIVER_PCI_HOSTMODE ++ bool "Hostmode support for BCMA PCI core" ++ depends on BCMA_DRIVER_MIPS ++ help ++ PCIcore hostmode operation (external PCI bus). ++ + config BCMA_DRIVER_MIPS + bool "BCMA Broadcom MIPS core driver" + depends on BCMA && MIPS +--- a/drivers/bcma/Makefile ++++ b/drivers/bcma/Makefile +@@ -1,6 +1,7 @@ + bcma-y += main.o scan.o core.o sprom.o + bcma-y += driver_chipcommon.o driver_chipcommon_pmu.o + bcma-y += driver_pci.o ++bcma-$(CONFIG_BCMA_DRIVER_PCI_HOSTMODE) += driver_pci_host.o + bcma-$(CONFIG_BCMA_DRIVER_MIPS) += driver_mips.o + bcma-$(CONFIG_BCMA_HOST_PCI) += host_pci.o + bcma-$(CONFIG_BCMA_HOST_SOC) += host_soc.o +--- a/drivers/bcma/bcma_private.h ++++ b/drivers/bcma/bcma_private.h +@@ -38,6 +38,12 @@ extern int bcma_chipco_serial_init(struc + struct bcma_drv_mips_serial_port *ports); + #endif /* CONFIG_BCMA_DRIVER_MIPS */ + ++#ifdef CONFIG_BCMA_DRIVER_PCI_HOSTMODE ++/* driver_pci_host.c */ ++int bcma_core_pci_in_hostmode(struct bcma_drv_pci *pc); ++void bcma_core_pci_hostmode_init(struct bcma_drv_pci *pc); ++#endif /* CONFIG_BCMA_DRIVER_PCI_HOSTMODE */ ++ + #ifdef CONFIG_BCMA_HOST_PCI + /* host_pci.c */ + extern int __init bcma_host_pci_init(void); +--- a/drivers/bcma/driver_pci.c ++++ b/drivers/bcma/driver_pci.c +@@ -159,9 +159,21 @@ static void bcma_pcicore_serdes_workarou + + void bcma_core_pci_init(struct bcma_drv_pci *pc) + { ++ struct bcma_device *core = pc->core; ++ + if (pc->setup_done) + return; +- bcma_pcicore_serdes_workaround(pc); ++ ++ if (!bcma_core_is_enabled(core)) ++ bcma_core_enable(core, 0); ++#ifdef CONFIG_BCMA_DRIVER_PCI_HOSTMODE ++ pc->hostmode = bcma_core_pci_in_hostmode(pc); ++ if (pc->hostmode) ++ bcma_core_pci_hostmode_init(pc); ++#endif /* CONFIG_BCMA_DRIVER_PCI_HOSTMODE */ ++ if (!pc->hostmode) ++ bcma_pcicore_serdes_workaround(pc); ++ + pc->setup_done = true; + } + +--- /dev/null ++++ b/drivers/bcma/driver_pci_host.c +@@ -0,0 +1,43 @@ ++/* ++ * Broadcom specific AMBA ++ * PCI Host mode ++ * ++ * Copyright 2005, Broadcom Corporation ++ * ++ * Licensed under the GNU/GPL. See COPYING for details. ++ */ ++ ++#include "bcma_private.h" ++#include <linux/bcma/bcma.h> ++ ++#include <asm/paccess.h> ++/* Probe a 32bit value on the bus and catch bus exceptions. ++ * Returns nonzero on a bus exception. ++ * This is MIPS specific */ ++#define mips_busprobe32(val, addr) get_dbe((val), ((u32 *)(addr))) ++ ++ ++void bcma_core_pci_hostmode_init(struct bcma_drv_pci *pc) ++{ ++ /* TODO: implement PCI host mode */ ++} ++ ++int bcma_core_pci_in_hostmode(struct bcma_drv_pci *pc) ++{ ++ struct bcma_bus *bus = pc->core->bus; ++ u16 chipid_top; ++ u32 tmp; ++ ++ chipid_top = (bus->chipinfo.id & 0xFF00); ++ if (chipid_top != 0x4700 && ++ chipid_top != 0x5300) ++ return 0; ++ ++/* TODO: add when sprom is available ++ * if (bus->sprom.boardflags_lo & SSB_PCICORE_BFL_NOPCI) ++ * return 0; ++ */ ++ ++ return !mips_busprobe32(tmp, (bus->mmio + (pc->core->core_index * ++ BCMA_CORE_SIZE))); ++} +--- a/include/linux/bcma/bcma_driver_pci.h ++++ b/include/linux/bcma/bcma_driver_pci.h +@@ -78,6 +78,7 @@ struct pci_dev; + struct bcma_drv_pci { + struct bcma_device *core; + u8 setup_done:1; ++ u8 hostmode:1; + }; + + /* Register access */ |