mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-11 19:18:25 +02:00
6c4398bc6a
Ethernet and wifi are not working and this is highly experimental. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27301 3c298f89-4303-0410-b956-a3cf2f4a3e73
141 lines
4.0 KiB
Diff
141 lines
4.0 KiB
Diff
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 */
|