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kernel-ark/drivers/bcma/driver_pci_host.c

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bcma: detect PCI core working in hostmode 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>
2011-07-05 17:48:26 +00:00
/*
* Broadcom specific AMBA
* PCI Core in hostmode
*
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
* Copyright 2005 - 2011, Broadcom Corporation
* Copyright 2006, 2007, Michael Buesch <m@bues.ch>
* Copyright 2011, 2012, Hauke Mehrtens <hauke@hauke-m.de>
*
bcma: detect PCI core working in hostmode 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>
2011-07-05 17:48:26 +00:00
* Licensed under the GNU/GPL. See COPYING for details.
*/
#include "bcma_private.h"
bcma: fix build error on MIPS; implicit pcibios_enable_device The following is seen during allmodconfig builds for MIPS: drivers/bcma/driver_pci_host.c:518:2: error: implicit declaration of function 'pcibios_enable_device' [-Werror=implicit-function-declaration] cc1: some warnings being treated as errors make[3]: *** [drivers/bcma/driver_pci_host.o] Error 1 Most likey introduced by commit 49dc9577155576b10ff79f0c1486c816b01f58bf "bcma: add PCIe host controller" Add the header instead of implicitly assuming it will be present. Sounds like a good idea, but that alone doesn't fix anything. The real problem is that the Kconfig has settings related to whether PCI is possible, i.e. config BCMA_HOST_PCI_POSSIBLE bool depends on BCMA && PCI = y default y config BCMA_HOST_PCI bool "Support for BCMA on PCI-host bus" depends on BCMA_HOST_PCI_POSSIBLE ...but what is missing is that BCMA_DRIVER_PCI_HOSTMODE doesn't have any dependencies on the above. Add one. CC: Hauke Mehrtens <hauke@hauke-m.de> CC: John W. Linville <linville@tuxdriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-26 00:02:55 +00:00
#include <linux/pci.h>
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
#include <linux/export.h>
bcma: detect PCI core working in hostmode 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>
2011-07-05 17:48:26 +00:00
#include <linux/bcma/bcma.h>
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
#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)))
/* Assume one-hot slot wiring */
#define BCMA_PCI_SLOT_MAX 16
#define PCI_CONFIG_SPACE_SIZE 256
Drivers: bcma: remove __dev* attributes. CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: "Rafał Miłecki" <zajec5@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-12-21 23:12:59 +00:00
bool bcma_core_pci_is_in_hostmode(struct bcma_drv_pci *pc)
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
{
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 false;
bcma_core_enable(pc->core, 0);
return !mips_busprobe32(tmp, pc->core->io_addr);
}
static u32 bcma_pcie_read_config(struct bcma_drv_pci *pc, u32 address)
{
pcicore_write32(pc, BCMA_CORE_PCI_CONFIG_ADDR, address);
pcicore_read32(pc, BCMA_CORE_PCI_CONFIG_ADDR);
return pcicore_read32(pc, BCMA_CORE_PCI_CONFIG_DATA);
}
static void bcma_pcie_write_config(struct bcma_drv_pci *pc, u32 address,
u32 data)
{
pcicore_write32(pc, BCMA_CORE_PCI_CONFIG_ADDR, address);
pcicore_read32(pc, BCMA_CORE_PCI_CONFIG_ADDR);
pcicore_write32(pc, BCMA_CORE_PCI_CONFIG_DATA, data);
}
static u32 bcma_get_cfgspace_addr(struct bcma_drv_pci *pc, unsigned int dev,
unsigned int func, unsigned int off)
{
u32 addr = 0;
/* Issue config commands only when the data link is up (atleast
* one external pcie device is present).
*/
if (dev >= 2 || !(bcma_pcie_read(pc, BCMA_CORE_PCI_DLLP_LSREG)
& BCMA_CORE_PCI_DLLP_LSREG_LINKUP))
goto out;
/* Type 0 transaction */
/* Slide the PCI window to the appropriate slot */
pcicore_write32(pc, BCMA_CORE_PCI_SBTOPCI1, BCMA_CORE_PCI_SBTOPCI_CFG0);
/* Calculate the address */
addr = pc->host_controller->host_cfg_addr;
addr |= (dev << BCMA_CORE_PCI_CFG_SLOT_SHIFT);
addr |= (func << BCMA_CORE_PCI_CFG_FUN_SHIFT);
addr |= (off & ~3);
out:
return addr;
}
static int bcma_extpci_read_config(struct bcma_drv_pci *pc, unsigned int dev,
unsigned int func, unsigned int off,
void *buf, int len)
{
int err = -EINVAL;
u32 addr, val;
void __iomem *mmio = 0;
WARN_ON(!pc->hostmode);
if (unlikely(len != 1 && len != 2 && len != 4))
goto out;
if (dev == 0) {
/* we support only two functions on device 0 */
if (func > 1)
bcma: jump to 'out' label for invalid 'func' value Consistently jump to the 'out' label for error conditions (adds missing check for 'func' validity in bcma_extpci_write_config). Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:14 +00:00
goto out;
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
/* accesses to config registers with offsets >= 256
* requires indirect access.
*/
if (off >= PCI_CONFIG_SPACE_SIZE) {
addr = (func << 12);
bcma: add support for 1 and 2 byte extended config space access The sanity checks allow 1 and 2 byte reads/writes of the extended PCI config space to proceed; however, the code only supports 4 byte reads/writes. This patch adds support for 1 and 2 byte reads/writes of the extended PCI config space. Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:16 +00:00
addr |= (off & 0x0FFC);
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
val = bcma_pcie_read_config(pc, addr);
} else {
addr = BCMA_CORE_PCI_PCICFG0;
addr |= (func << 8);
bcma: use consistent case for 'hex' constants Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:17 +00:00
addr |= (off & 0xFC);
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
val = pcicore_read32(pc, addr);
}
} else {
addr = bcma_get_cfgspace_addr(pc, dev, func, off);
if (unlikely(!addr))
goto out;
err = -ENOMEM;
bcma: reads/writes are always 4 bytes, so always map 4 bytes Modify ioremap_nocache calls to reflect the number of bytes read/written. Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-05 04:56:34 +00:00
mmio = ioremap_nocache(addr, sizeof(val));
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
if (!mmio)
goto out;
if (mips_busprobe32(val, mmio)) {
bcma: use consistent case for 'hex' constants Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:17 +00:00
val = 0xFFFFFFFF;
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
goto unmap;
}
}
val >>= (8 * (off & 3));
switch (len) {
case 1:
*((u8 *)buf) = (u8)val;
break;
case 2:
*((u16 *)buf) = (u16)val;
break;
case 4:
*((u32 *)buf) = (u32)val;
break;
}
err = 0;
unmap:
if (mmio)
iounmap(mmio);
out:
return err;
}
static int bcma_extpci_write_config(struct bcma_drv_pci *pc, unsigned int dev,
unsigned int func, unsigned int off,
const void *buf, int len)
{
int err = -EINVAL;
bcma: don't map/unmap a subset of the PCI config space For PCI config space access offsets < 256 for device '0', bcma_extpci_write_config performs an 'ioremap_nocache' on a 4 byte section of the PCI config space (an area that has already previously been mapped), and then subsequently unmaps that 4 byte section. This can't be a good thing for future read access from that now unmapped location. Modify the config space writes to use the existing access functions (similar to how it is done for the reads). Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:15 +00:00
u32 addr, val;
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
void __iomem *mmio = 0;
u16 chipid = pc->core->bus->chipinfo.id;
WARN_ON(!pc->hostmode);
if (unlikely(len != 1 && len != 2 && len != 4))
goto out;
if (dev == 0) {
bcma: jump to 'out' label for invalid 'func' value Consistently jump to the 'out' label for error conditions (adds missing check for 'func' validity in bcma_extpci_write_config). Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:14 +00:00
/* we support only two functions on device 0 */
if (func > 1)
goto out;
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
/* accesses to config registers with offsets >= 256
* requires indirect access.
*/
bcma: add support for 1 and 2 byte extended config space access The sanity checks allow 1 and 2 byte reads/writes of the extended PCI config space to proceed; however, the code only supports 4 byte reads/writes. This patch adds support for 1 and 2 byte reads/writes of the extended PCI config space. Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:16 +00:00
if (off >= PCI_CONFIG_SPACE_SIZE) {
addr = (func << 12);
addr |= (off & 0x0FFC);
val = bcma_pcie_read_config(pc, addr);
} else {
bcma: don't map/unmap a subset of the PCI config space For PCI config space access offsets < 256 for device '0', bcma_extpci_write_config performs an 'ioremap_nocache' on a 4 byte section of the PCI config space (an area that has already previously been mapped), and then subsequently unmaps that 4 byte section. This can't be a good thing for future read access from that now unmapped location. Modify the config space writes to use the existing access functions (similar to how it is done for the reads). Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:15 +00:00
addr = BCMA_CORE_PCI_PCICFG0;
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
addr |= (func << 8);
bcma: use consistent case for 'hex' constants Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:17 +00:00
addr |= (off & 0xFC);
bcma: don't map/unmap a subset of the PCI config space For PCI config space access offsets < 256 for device '0', bcma_extpci_write_config performs an 'ioremap_nocache' on a 4 byte section of the PCI config space (an area that has already previously been mapped), and then subsequently unmaps that 4 byte section. This can't be a good thing for future read access from that now unmapped location. Modify the config space writes to use the existing access functions (similar to how it is done for the reads). Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:15 +00:00
val = pcicore_read32(pc, addr);
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
}
} else {
addr = bcma_get_cfgspace_addr(pc, dev, func, off);
if (unlikely(!addr))
goto out;
err = -ENOMEM;
bcma: reads/writes are always 4 bytes, so always map 4 bytes Modify ioremap_nocache calls to reflect the number of bytes read/written. Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-05 04:56:34 +00:00
mmio = ioremap_nocache(addr, sizeof(val));
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
if (!mmio)
goto out;
if (mips_busprobe32(val, mmio)) {
bcma: use consistent case for 'hex' constants Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:17 +00:00
val = 0xFFFFFFFF;
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
goto unmap;
}
}
switch (len) {
case 1:
val &= ~(0xFF << (8 * (off & 3)));
val |= *((const u8 *)buf) << (8 * (off & 3));
break;
case 2:
val &= ~(0xFFFF << (8 * (off & 3)));
val |= *((const u16 *)buf) << (8 * (off & 3));
break;
case 4:
val = *((const u32 *)buf);
break;
}
bcma: don't map/unmap a subset of the PCI config space For PCI config space access offsets < 256 for device '0', bcma_extpci_write_config performs an 'ioremap_nocache' on a 4 byte section of the PCI config space (an area that has already previously been mapped), and then subsequently unmaps that 4 byte section. This can't be a good thing for future read access from that now unmapped location. Modify the config space writes to use the existing access functions (similar to how it is done for the reads). Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:15 +00:00
if (dev == 0) {
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
/* accesses to config registers with offsets >= 256
* requires indirect access.
*/
bcma: add support for 1 and 2 byte extended config space access The sanity checks allow 1 and 2 byte reads/writes of the extended PCI config space to proceed; however, the code only supports 4 byte reads/writes. This patch adds support for 1 and 2 byte reads/writes of the extended PCI config space. Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:16 +00:00
if (off >= PCI_CONFIG_SPACE_SIZE)
bcma: don't map/unmap a subset of the PCI config space For PCI config space access offsets < 256 for device '0', bcma_extpci_write_config performs an 'ioremap_nocache' on a 4 byte section of the PCI config space (an area that has already previously been mapped), and then subsequently unmaps that 4 byte section. This can't be a good thing for future read access from that now unmapped location. Modify the config space writes to use the existing access functions (similar to how it is done for the reads). Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:15 +00:00
bcma_pcie_write_config(pc, addr, val);
bcma: add support for 1 and 2 byte extended config space access The sanity checks allow 1 and 2 byte reads/writes of the extended PCI config space to proceed; however, the code only supports 4 byte reads/writes. This patch adds support for 1 and 2 byte reads/writes of the extended PCI config space. Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:16 +00:00
else
bcma: don't map/unmap a subset of the PCI config space For PCI config space access offsets < 256 for device '0', bcma_extpci_write_config performs an 'ioremap_nocache' on a 4 byte section of the PCI config space (an area that has already previously been mapped), and then subsequently unmaps that 4 byte section. This can't be a good thing for future read access from that now unmapped location. Modify the config space writes to use the existing access functions (similar to how it is done for the reads). Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:15 +00:00
pcicore_write32(pc, addr, val);
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
} else {
writel(val, mmio);
bcma: add constants for chip ids The chip IDs are used all over bcma and no constants where defined. This patch adds the constants and makes bcma use them. Acked-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-29 23:44:38 +00:00
if (chipid == BCMA_CHIP_ID_BCM4716 ||
chipid == BCMA_CHIP_ID_BCM4748)
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
readl(mmio);
}
err = 0;
unmap:
if (mmio)
iounmap(mmio);
out:
return err;
}
static int bcma_core_pci_hostmode_read_config(struct pci_bus *bus,
unsigned int devfn,
int reg, int size, u32 *val)
{
unsigned long flags;
int err;
struct bcma_drv_pci *pc;
struct bcma_drv_pci_host *pc_host;
pc_host = container_of(bus->ops, struct bcma_drv_pci_host, pci_ops);
pc = pc_host->pdev;
spin_lock_irqsave(&pc_host->cfgspace_lock, flags);
err = bcma_extpci_read_config(pc, PCI_SLOT(devfn),
PCI_FUNC(devfn), reg, val, size);
spin_unlock_irqrestore(&pc_host->cfgspace_lock, flags);
return err ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
}
static int bcma_core_pci_hostmode_write_config(struct pci_bus *bus,
unsigned int devfn,
int reg, int size, u32 val)
{
unsigned long flags;
int err;
struct bcma_drv_pci *pc;
struct bcma_drv_pci_host *pc_host;
pc_host = container_of(bus->ops, struct bcma_drv_pci_host, pci_ops);
pc = pc_host->pdev;
spin_lock_irqsave(&pc_host->cfgspace_lock, flags);
err = bcma_extpci_write_config(pc, PCI_SLOT(devfn),
PCI_FUNC(devfn), reg, &val, size);
spin_unlock_irqrestore(&pc_host->cfgspace_lock, flags);
return err ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
}
/* return cap_offset if requested capability exists in the PCI config space */
Drivers: bcma: remove __dev* attributes. CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: "Rafał Miłecki" <zajec5@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-12-21 23:12:59 +00:00
static u8 bcma_find_pci_capability(struct bcma_drv_pci *pc, unsigned int dev,
unsigned int func, u8 req_cap_id,
unsigned char *buf, u32 *buflen)
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
{
u8 cap_id;
u8 cap_ptr = 0;
u32 bufsize;
u8 byte_val;
/* check for Header type 0 */
bcma_extpci_read_config(pc, dev, func, PCI_HEADER_TYPE, &byte_val,
sizeof(u8));
bcma: use consistent case for 'hex' constants Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-12 10:46:17 +00:00
if ((byte_val & 0x7F) != PCI_HEADER_TYPE_NORMAL)
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
return cap_ptr;
/* check if the capability pointer field exists */
bcma_extpci_read_config(pc, dev, func, PCI_STATUS, &byte_val,
sizeof(u8));
if (!(byte_val & PCI_STATUS_CAP_LIST))
return cap_ptr;
/* check if the capability pointer is 0x00 */
bcma_extpci_read_config(pc, dev, func, PCI_CAPABILITY_LIST, &cap_ptr,
sizeof(u8));
if (cap_ptr == 0x00)
return cap_ptr;
/* loop thr'u the capability list and see if the requested capabilty
* exists */
bcma_extpci_read_config(pc, dev, func, cap_ptr, &cap_id, sizeof(u8));
while (cap_id != req_cap_id) {
bcma_extpci_read_config(pc, dev, func, cap_ptr + 1, &cap_ptr,
sizeof(u8));
if (cap_ptr == 0x00)
return cap_ptr;
bcma_extpci_read_config(pc, dev, func, cap_ptr, &cap_id,
sizeof(u8));
}
/* found the caller requested capability */
if ((buf != NULL) && (buflen != NULL)) {
u8 cap_data;
bufsize = *buflen;
if (!bufsize)
return cap_ptr;
*buflen = 0;
/* copy the cpability data excluding cap ID and next ptr */
cap_data = cap_ptr + 2;
if ((bufsize + cap_data) > PCI_CONFIG_SPACE_SIZE)
bufsize = PCI_CONFIG_SPACE_SIZE - cap_data;
*buflen = bufsize;
while (bufsize--) {
bcma_extpci_read_config(pc, dev, func, cap_data, buf,
sizeof(u8));
cap_data++;
buf++;
}
}
return cap_ptr;
}
/* If the root port is capable of returning Config Request
* Retry Status (CRS) Completion Status to software then
* enable the feature.
*/
Drivers: bcma: remove __dev* attributes. CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: "Rafał Miłecki" <zajec5@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-12-21 23:12:59 +00:00
static void bcma_core_pci_enable_crs(struct bcma_drv_pci *pc)
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
{
bcma: use custom printing functions Having bus number printed makes it much easier to anaylze logs on systems with more buses. For example Netgear WNDR4500 has 3 AMBA buses in total, which makes standard log really messy. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-07-05 20:07:32 +00:00
struct bcma_bus *bus = pc->core->bus;
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
u8 cap_ptr, root_ctrl, root_cap, dev;
u16 val16;
int i;
cap_ptr = bcma_find_pci_capability(pc, 0, 0, PCI_CAP_ID_EXP, NULL,
NULL);
root_cap = cap_ptr + PCI_EXP_RTCAP;
bcma_extpci_read_config(pc, 0, 0, root_cap, &val16, sizeof(u16));
if (val16 & BCMA_CORE_PCI_RC_CRS_VISIBILITY) {
/* Enable CRS software visibility */
root_ctrl = cap_ptr + PCI_EXP_RTCTL;
val16 = PCI_EXP_RTCTL_CRSSVE;
bcma_extpci_read_config(pc, 0, 0, root_ctrl, &val16,
sizeof(u16));
/* Initiate a configuration request to read the vendor id
* field of the device function's config space header after
* 100 ms wait time from the end of Reset. If the device is
* not done with its internal initialization, it must at
* least return a completion TLP, with a completion status
* of "Configuration Request Retry Status (CRS)". The root
* complex must complete the request to the host by returning
* a read-data value of 0001h for the Vendor ID field and
* all 1s for any additional bytes included in the request.
* Poll using the config reads for max wait time of 1 sec or
* until we receive the successful completion status. Repeat
* the procedure for all the devices.
*/
for (dev = 1; dev < BCMA_PCI_SLOT_MAX; dev++) {
for (i = 0; i < 100000; i++) {
bcma_extpci_read_config(pc, dev, 0,
PCI_VENDOR_ID, &val16,
sizeof(val16));
if (val16 != 0x1)
break;
udelay(10);
}
if (val16 == 0x1)
bcma: use custom printing functions Having bus number printed makes it much easier to anaylze logs on systems with more buses. For example Netgear WNDR4500 has 3 AMBA buses in total, which makes standard log really messy. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-07-05 20:07:32 +00:00
bcma_err(bus, "PCI: Broken device in slot %d\n",
dev);
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
}
}
}
bcma: detect PCI core working in hostmode 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>
2011-07-05 17:48:26 +00:00
Drivers: bcma: remove __dev* attributes. CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: "Rafał Miłecki" <zajec5@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-12-21 23:12:59 +00:00
void bcma_core_pci_hostmode_init(struct bcma_drv_pci *pc)
bcma: detect PCI core working in hostmode 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>
2011-07-05 17:48:26 +00:00
{
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
struct bcma_bus *bus = pc->core->bus;
struct bcma_drv_pci_host *pc_host;
u32 tmp;
u32 pci_membase_1G;
unsigned long io_map_base;
bcma: use custom printing functions Having bus number printed makes it much easier to anaylze logs on systems with more buses. For example Netgear WNDR4500 has 3 AMBA buses in total, which makes standard log really messy. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-07-05 20:07:32 +00:00
bcma_info(bus, "PCIEcore in host mode found\n");
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
bcma: do not initialize deactivated PCIe cores Before it was tried to initialize the deactivated PCIe core in client mode, but this causes the SoC to hang. Just do not initialize it at all and ignore the core it is not working and nothing is connected to it when the specific bit is set in the boardflags. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-30 22:12:54 +00:00
if (bus->sprom.boardflags_lo & BCMA_CORE_PCI_BFL_NOPCI) {
bcma_info(bus, "This PCIE core is disabled and not working\n");
return;
}
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
pc_host = kzalloc(sizeof(*pc_host), GFP_KERNEL);
if (!pc_host) {
bcma: use custom printing functions Having bus number printed makes it much easier to anaylze logs on systems with more buses. For example Netgear WNDR4500 has 3 AMBA buses in total, which makes standard log really messy. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-07-05 20:07:32 +00:00
bcma_err(bus, "can not allocate memory");
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
return;
}
bcma: init spin lock This spin lock was not initialized. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-02-23 22:30:22 +00:00
spin_lock_init(&pc_host->cfgspace_lock);
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
pc->host_controller = pc_host;
pc_host->pci_controller.io_resource = &pc_host->io_resource;
pc_host->pci_controller.mem_resource = &pc_host->mem_resource;
pc_host->pci_controller.pci_ops = &pc_host->pci_ops;
pc_host->pdev = pc;
pci_membase_1G = BCMA_SOC_PCI_DMA;
pc_host->host_cfg_addr = BCMA_SOC_PCI_CFG;
pc_host->pci_ops.read = bcma_core_pci_hostmode_read_config;
pc_host->pci_ops.write = bcma_core_pci_hostmode_write_config;
pc_host->mem_resource.name = "BCMA PCIcore external memory",
pc_host->mem_resource.start = BCMA_SOC_PCI_DMA;
pc_host->mem_resource.end = BCMA_SOC_PCI_DMA + BCMA_SOC_PCI_DMA_SZ - 1;
pc_host->mem_resource.flags = IORESOURCE_MEM | IORESOURCE_PCI_FIXED;
pc_host->io_resource.name = "BCMA PCIcore external I/O",
pc_host->io_resource.start = 0x100;
pc_host->io_resource.end = 0x7FF;
pc_host->io_resource.flags = IORESOURCE_IO | IORESOURCE_PCI_FIXED;
/* Reset RC */
bcma: change delays to follow timers-howto guide Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Cc: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-25 08:17:22 +00:00
usleep_range(3000, 5000);
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
pcicore_write32(pc, BCMA_CORE_PCI_CTL, BCMA_CORE_PCI_CTL_RST_OE);
bcma: update pci configuration for bcm4706/bcm4716 Update the PCI configuration for BCM4706 and BCM4716 per the 2011 Broadcom SDK. Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-11 06:24:03 +00:00
msleep(50);
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
pcicore_write32(pc, BCMA_CORE_PCI_CTL, BCMA_CORE_PCI_CTL_RST |
BCMA_CORE_PCI_CTL_RST_OE);
/* 64 MB I/O access window. On 4716, use
* sbtopcie0 to access the device registers. We
* can't use address match 2 (1 GB window) region
* as mips can't generate 64-bit address on the
* backplane.
*/
bcma: add constants for chip ids The chip IDs are used all over bcma and no constants where defined. This patch adds the constants and makes bcma use them. Acked-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-29 23:44:38 +00:00
if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4716 ||
bus->chipinfo.id == BCMA_CHIP_ID_BCM4748) {
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
pc_host->mem_resource.start = BCMA_SOC_PCI_MEM;
pc_host->mem_resource.end = BCMA_SOC_PCI_MEM +
BCMA_SOC_PCI_MEM_SZ - 1;
pcicore_write32(pc, BCMA_CORE_PCI_SBTOPCI0,
BCMA_CORE_PCI_SBTOPCI_MEM | BCMA_SOC_PCI_MEM);
bcma: add constants for chip ids The chip IDs are used all over bcma and no constants where defined. This patch adds the constants and makes bcma use them. Acked-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-29 23:44:38 +00:00
} else if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706) {
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
tmp = BCMA_CORE_PCI_SBTOPCI_MEM;
tmp |= BCMA_CORE_PCI_SBTOPCI_PREF;
tmp |= BCMA_CORE_PCI_SBTOPCI_BURST;
if (pc->core->core_unit == 0) {
pc_host->mem_resource.start = BCMA_SOC_PCI_MEM;
pc_host->mem_resource.end = BCMA_SOC_PCI_MEM +
BCMA_SOC_PCI_MEM_SZ - 1;
bcma: add an extra pcie core struct The BCM4706 has two PCIe host controller on the bcma bus. For PCIe client mode it is assumed that there is only one PCIe controller so the PCIe driver, like b43 and brcmsmac are accessing the first PCIe controller when they want to issue a operation on the host controller. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-29 18:40:18 +00:00
pc_host->io_resource.start = 0x100;
pc_host->io_resource.end = 0x47F;
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
pci_membase_1G = BCMA_SOC_PCIE_DMA_H32;
pcicore_write32(pc, BCMA_CORE_PCI_SBTOPCI0,
tmp | BCMA_SOC_PCI_MEM);
} else if (pc->core->core_unit == 1) {
pc_host->mem_resource.start = BCMA_SOC_PCI1_MEM;
pc_host->mem_resource.end = BCMA_SOC_PCI1_MEM +
BCMA_SOC_PCI_MEM_SZ - 1;
bcma: add an extra pcie core struct The BCM4706 has two PCIe host controller on the bcma bus. For PCIe client mode it is assumed that there is only one PCIe controller so the PCIe driver, like b43 and brcmsmac are accessing the first PCIe controller when they want to issue a operation on the host controller. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-29 18:40:18 +00:00
pc_host->io_resource.start = 0x480;
pc_host->io_resource.end = 0x7FF;
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
pci_membase_1G = BCMA_SOC_PCIE1_DMA_H32;
pc_host->host_cfg_addr = BCMA_SOC_PCI1_CFG;
pcicore_write32(pc, BCMA_CORE_PCI_SBTOPCI0,
tmp | BCMA_SOC_PCI1_MEM);
}
} else
pcicore_write32(pc, BCMA_CORE_PCI_SBTOPCI0,
BCMA_CORE_PCI_SBTOPCI_IO);
/* 64 MB configuration access window */
pcicore_write32(pc, BCMA_CORE_PCI_SBTOPCI1, BCMA_CORE_PCI_SBTOPCI_CFG0);
/* 1 GB memory access window */
pcicore_write32(pc, BCMA_CORE_PCI_SBTOPCI2,
BCMA_CORE_PCI_SBTOPCI_MEM | pci_membase_1G);
/* As per PCI Express Base Spec 1.1 we need to wait for
* at least 100 ms from the end of a reset (cold/warm/hot)
* before issuing configuration requests to PCI Express
* devices.
*/
bcma: change delays to follow timers-howto guide Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Cc: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-25 08:17:22 +00:00
msleep(100);
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
bcma_core_pci_enable_crs(pc);
bcma: update pci configuration for bcm4706/bcm4716 Update the PCI configuration for BCM4706 and BCM4716 per the 2011 Broadcom SDK. Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-11 06:24:03 +00:00
if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706 ||
bus->chipinfo.id == BCMA_CHIP_ID_BCM4716) {
u16 val16;
bcma_extpci_read_config(pc, 0, 0, BCMA_CORE_PCI_CFG_DEVCTRL,
&val16, sizeof(val16));
val16 |= (2 << 5); /* Max payload size of 512 */
val16 |= (2 << 12); /* MRRS 512 */
bcma_extpci_write_config(pc, 0, 0, BCMA_CORE_PCI_CFG_DEVCTRL,
&val16, sizeof(val16));
}
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
/* Enable PCI bridge BAR0 memory & master access */
tmp = PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
bcma_extpci_write_config(pc, 0, 0, PCI_COMMAND, &tmp, sizeof(tmp));
/* Enable PCI interrupts */
pcicore_write32(pc, BCMA_CORE_PCI_IMASK, BCMA_CORE_PCI_IMASK_INTA);
/* Ok, ready to run, register it to the system.
* The following needs change, if we want to port hostmode
* to non-MIPS platform. */
bcma: Account for variable PCI memory base/size PCI Memory Resource start address and size are variable, dependent on the H/W configuration. Modify the computation of io_map_base to use the computed values. Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-05 04:56:33 +00:00
io_map_base = (unsigned long)ioremap_nocache(pc_host->mem_resource.start,
resource_size(&pc_host->mem_resource));
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
pc_host->pci_controller.io_map_base = io_map_base;
set_io_port_base(pc_host->pci_controller.io_map_base);
/* Give some time to the PCI controller to configure itself with the new
* values. Not waiting at this point causes crashes of the machine. */
bcma: change delays to follow timers-howto guide Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Cc: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-25 08:17:22 +00:00
usleep_range(10000, 15000);
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
register_pci_controller(&pc_host->pci_controller);
return;
}
/* Early PCI fixup for a device on the PCI-core bridge. */
static void bcma_core_pci_fixup_pcibridge(struct pci_dev *dev)
{
if (dev->bus->ops->read != bcma_core_pci_hostmode_read_config) {
/* This is not a device on the PCI-core bridge. */
return;
}
if (PCI_SLOT(dev->devfn) != 0)
return;
pr_info("PCI: Fixing up bridge %s\n", pci_name(dev));
/* Enable PCI bridge bus mastering and memory space */
pci_set_master(dev);
if (pcibios_enable_device(dev, ~0) < 0) {
pr_err("PCI: BCMA bridge enable failed\n");
return;
}
/* Enable PCI bridge BAR1 prefetch and burst */
pci_write_config_dword(dev, BCMA_PCI_BAR1_CONTROL, 3);
}
DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, bcma_core_pci_fixup_pcibridge);
/* Early PCI fixup for all PCI-cores to set the correct memory address. */
static void bcma_core_pci_fixup_addresses(struct pci_dev *dev)
{
struct resource *res;
bcma: handle return value of pci_assign_resource This fixes the following warning: CC drivers/bcma/driver_pci_host.o drivers/bcma/driver_pci_host.c: In function 'bcma_core_pci_fixup_addresses': drivers/bcma/driver_pci_host.c:555:23: error: ignoring return value of 'pci_assign_resource', declared with attribute warn_unused_result [-Werror=unused-result] Reported-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-11-26 23:30:04 +00:00
int pos, err;
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
if (dev->bus->ops->read != bcma_core_pci_hostmode_read_config) {
/* This is not a device on the PCI-core bridge. */
return;
}
if (PCI_SLOT(dev->devfn) == 0)
return;
pr_info("PCI: Fixing up addresses %s\n", pci_name(dev));
for (pos = 0; pos < 6; pos++) {
res = &dev->resource[pos];
bcma: handle return value of pci_assign_resource This fixes the following warning: CC drivers/bcma/driver_pci_host.o drivers/bcma/driver_pci_host.c: In function 'bcma_core_pci_fixup_addresses': drivers/bcma/driver_pci_host.c:555:23: error: ignoring return value of 'pci_assign_resource', declared with attribute warn_unused_result [-Werror=unused-result] Reported-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-11-26 23:30:04 +00:00
if (res->flags & (IORESOURCE_IO | IORESOURCE_MEM)) {
err = pci_assign_resource(dev, pos);
if (err)
pr_err("PCI: Problem fixing up the addresses on %s\n",
pci_name(dev));
}
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, bcma_core_pci_fixup_addresses);
/* This function is called when doing a pci_enable_device().
* We must first check if the device is a device on the PCI-core bridge. */
int bcma_core_pci_plat_dev_init(struct pci_dev *dev)
{
struct bcma_drv_pci_host *pc_host;
bcma: change max PCI read request size to 128 This PCIe controller does not support a max read request size above 128 bytes. The sold card I tested this controller with used 128 as default value, but some new routers are sold with BCM4331 chips, which have a default max read request size of 512. This device fails at the first DMA reqeust whch is bigger than 126 bytes. This patch changes the max read request size to 128 for every device on the PCIe link. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-08-23 21:22:29 +00:00
int readrq;
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
if (dev->bus->ops->read != bcma_core_pci_hostmode_read_config) {
/* This is not a device on the PCI-core bridge. */
return -ENODEV;
}
pc_host = container_of(dev->bus->ops, struct bcma_drv_pci_host,
pci_ops);
pr_info("PCI: Fixing up device %s\n", pci_name(dev));
/* Fix up interrupt lines */
bcma: return the mips irq number in bcma_core_irq The irq signal numbers that are send by the cpu are increased by 2 from the number programmed into the mips core by bcma. Return the irq number on which the irqs are send in bcma_core_irq() now. Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-10 16:54:09 +00:00
dev->irq = bcma_core_irq(pc_host->pdev->core);
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
bcma: change max PCI read request size to 128 This PCIe controller does not support a max read request size above 128 bytes. The sold card I tested this controller with used 128 as default value, but some new routers are sold with BCM4331 chips, which have a default max read request size of 512. This device fails at the first DMA reqeust whch is bigger than 126 bytes. This patch changes the max read request size to 128 for every device on the PCIe link. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-08-23 21:22:29 +00:00
readrq = pcie_get_readrq(dev);
if (readrq > 128) {
pr_info("change PCIe max read request size from %i to 128\n", readrq);
pcie_set_readrq(dev, 128);
}
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
return 0;
}
EXPORT_SYMBOL(bcma_core_pci_plat_dev_init);
/* PCI device IRQ mapping. */
int bcma_core_pci_pcibios_map_irq(const struct pci_dev *dev)
{
struct bcma_drv_pci_host *pc_host;
if (dev->bus->ops->read != bcma_core_pci_hostmode_read_config) {
/* This is not a device on the PCI-core bridge. */
return -ENODEV;
}
pc_host = container_of(dev->bus->ops, struct bcma_drv_pci_host,
pci_ops);
bcma: return the mips irq number in bcma_core_irq The irq signal numbers that are send by the cpu are increased by 2 from the number programmed into the mips core by bcma. Return the irq number on which the irqs are send in bcma_core_irq() now. Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-10 16:54:09 +00:00
return bcma_core_irq(pc_host->pdev->core);
bcma: detect PCI core working in hostmode 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>
2011-07-05 17:48:26 +00:00
}
bcma: add PCIe host controller 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>
2012-01-30 23:03:35 +00:00
EXPORT_SYMBOL(bcma_core_pci_pcibios_map_irq);
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