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bcma: detect PCI core working in hostmode

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We must not init it like clientmode one, it would break device (tested
by Hauke on BCM4718). Add stub hostmode driver for now.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rafał Miłecki 2011-07-05 19:48:26 +02:00 committed by John W. Linville
parent f0c717e6b7
commit 9352f69c91
5 changed files with 62 additions and 1 deletions
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6
drivers/bcma/Kconfig
View file

@ -27,6 +27,12 @@ config BCMA_HOST_PCI
bool "Support for BCMA on PCI-host bus"
depends on BCMA_HOST_PCI_POSSIBLE
config BCMA_DRIVER_PCI_HOSTMODE
bool "Driver for PCI core working in hostmode"
depends on BCMA && MIPS
help
PCI core hostmode operation (external PCI bus).
config BCMA_DEBUG
bool "BCMA debugging"
depends on BCMA

1
drivers/bcma/Makefile
View file

@ -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_HOST_PCI) += host_pci.o
obj-$(CONFIG_BCMA) += bcma.o

4
drivers/bcma/bcma_private.h
View file

@ -28,4 +28,8 @@ extern int __init bcma_host_pci_init(void);
extern void __exit bcma_host_pci_exit(void);
#endif /* CONFIG_BCMA_HOST_PCI */
#ifdef CONFIG_BCMA_DRIVER_PCI_HOSTMODE
void bcma_core_pci_hostmode_init(struct bcma_drv_pci *pc);
#endif /* CONFIG_BCMA_DRIVER_PCI_HOSTMODE */
#endif

38
drivers/bcma/driver_pci.c
View file

@ -157,11 +157,47 @@ 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;
if (bus->sprom.boardflags_lo & SSB_PCICORE_BFL_NOPCI)
return false;
#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 (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);
}
}
int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc, struct bcma_device *core,
bool enable)
{

14
drivers/bcma/driver_pci_host.c Normal file
View file

@ -0,0 +1,14 @@
/*
* Broadcom specific AMBA
* PCI Core in hostmode
*
* Licensed under the GNU/GPL. See COPYING for details.
*/
#include "bcma_private.h"
#include <linux/bcma/bcma.h>
void bcma_core_pci_hostmode_init(struct bcma_drv_pci *pc)
{
pr_err("No support for PCI core in hostmode yet\n");
}