kernel: backport bcma changes to 3.19 and 4.0

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 44597

1 files changed, 355 insertions, 0 deletions

diff --git a/target/linux/generic/patches-4.0/021-bcma-from-4.1.patch b/target/linux/generic/patches-4.0/021-bcma-from-4.1.patch
new file mode 100644
index 0000000..fb751cb
--- /dev/null
+++ b/target/linux/generic/patches-4.0/021-bcma-from-4.1.patch
@@ -0,0 +1,355 @@
+--- a/drivers/bcma/bcma_private.h
++++ b/drivers/bcma/bcma_private.h
+@@ -26,6 +26,7 @@ bool bcma_wait_value(struct bcma_device
+ 		     int timeout);
+ void bcma_prepare_core(struct bcma_bus *bus, struct bcma_device *core);
+ void bcma_init_bus(struct bcma_bus *bus);
++void bcma_unregister_cores(struct bcma_bus *bus);
+ int bcma_bus_register(struct bcma_bus *bus);
+ void bcma_bus_unregister(struct bcma_bus *bus);
+ int __init bcma_bus_early_register(struct bcma_bus *bus);
+@@ -101,6 +102,11 @@ static inline void __exit bcma_host_soc_
+ 
+ /* driver_pci.c */
+ u32 bcma_pcie_read(struct bcma_drv_pci *pc, u32 address);
++void bcma_core_pci_up(struct bcma_drv_pci *pc);
++void bcma_core_pci_down(struct bcma_drv_pci *pc);
++
++/* driver_pcie2.c */
++void bcma_core_pcie2_up(struct bcma_drv_pcie2 *pcie2);
+ 
+ extern int bcma_chipco_watchdog_register(struct bcma_drv_cc *cc);
+ 
+--- a/drivers/bcma/driver_gpio.c
++++ b/drivers/bcma/driver_gpio.c
+@@ -76,7 +76,7 @@ static void bcma_gpio_free(struct gpio_c
+ 	bcma_chipco_gpio_pullup(cc, 1 << gpio, 0);
+ }
+ 
+-#if IS_BUILTIN(CONFIG_BCM47XX)
++#if IS_BUILTIN(CONFIG_BCM47XX) || IS_BUILTIN(CONFIG_ARCH_BCM_5301X)
+ static int bcma_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
+ {
+ 	struct bcma_drv_cc *cc = bcma_gpio_get_cc(chip);
+@@ -215,7 +215,7 @@ int bcma_gpio_init(struct bcma_drv_cc *c
+ 	chip->set		= bcma_gpio_set_value;
+ 	chip->direction_input	= bcma_gpio_direction_input;
+ 	chip->direction_output	= bcma_gpio_direction_output;
+-#if IS_BUILTIN(CONFIG_BCM47XX)
++#if IS_BUILTIN(CONFIG_BCM47XX) || IS_BUILTIN(CONFIG_ARCH_BCM_5301X)
+ 	chip->to_irq		= bcma_gpio_to_irq;
+ #endif
+ #if IS_BUILTIN(CONFIG_OF)
+--- a/drivers/bcma/driver_pci.c
++++ b/drivers/bcma/driver_pci.c
+@@ -282,21 +282,21 @@ void bcma_core_pci_power_save(struct bcm
+ }
+ EXPORT_SYMBOL_GPL(bcma_core_pci_power_save);
+ 
+-int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc, struct bcma_device *core,
++int bcma_core_pci_irq_ctl(struct bcma_bus *bus, struct bcma_device *core,
+ 			  bool enable)
+ {
+ 	struct pci_dev *pdev;
+ 	u32 coremask, tmp;
+ 	int err = 0;
+ 
+-	if (!pc || core->bus->hosttype != BCMA_HOSTTYPE_PCI) {
++	if (bus->hosttype != BCMA_HOSTTYPE_PCI) {
+ 		/* This bcma device is not on a PCI host-bus. So the IRQs are
+ 		 * not routed through the PCI core.
+ 		 * So we must not enable routing through the PCI core. */
+ 		goto out;
+ 	}
+ 
+-	pdev = pc->core->bus->host_pci;
++	pdev = bus->host_pci;
+ 
+ 	err = pci_read_config_dword(pdev, BCMA_PCI_IRQMASK, &tmp);
+ 	if (err)
+@@ -328,28 +328,12 @@ static void bcma_core_pci_extend_L1timer
+ 	bcma_pcie_read(pc, BCMA_CORE_PCI_DLLP_PMTHRESHREG);
+ }
+ 
+-void bcma_core_pci_up(struct bcma_bus *bus)
++void bcma_core_pci_up(struct bcma_drv_pci *pc)
+ {
+-	struct bcma_drv_pci *pc;
+-
+-	if (bus->hosttype != BCMA_HOSTTYPE_PCI)
+-		return;
+-
+-	pc = &bus->drv_pci[0];
+-
+ 	bcma_core_pci_extend_L1timer(pc, true);
+ }
+-EXPORT_SYMBOL_GPL(bcma_core_pci_up);
+ 
+-void bcma_core_pci_down(struct bcma_bus *bus)
++void bcma_core_pci_down(struct bcma_drv_pci *pc)
+ {
+-	struct bcma_drv_pci *pc;
+-
+-	if (bus->hosttype != BCMA_HOSTTYPE_PCI)
+-		return;
+-
+-	pc = &bus->drv_pci[0];
+-
+ 	bcma_core_pci_extend_L1timer(pc, false);
+ }
+-EXPORT_SYMBOL_GPL(bcma_core_pci_down);
+--- a/drivers/bcma/driver_pci_host.c
++++ b/drivers/bcma/driver_pci_host.c
+@@ -11,6 +11,7 @@
+ 
+ #include "bcma_private.h"
+ #include <linux/pci.h>
++#include <linux/slab.h>
+ #include <linux/export.h>
+ #include <linux/bcma/bcma.h>
+ #include <asm/paccess.h>
+--- a/drivers/bcma/driver_pcie2.c
++++ b/drivers/bcma/driver_pcie2.c
+@@ -10,6 +10,7 @@
+ 
+ #include "bcma_private.h"
+ #include <linux/bcma/bcma.h>
++#include <linux/pci.h>
+ 
+ /**************************************************
+  * R/W ops.
+@@ -156,14 +157,23 @@ static void pciedev_reg_pm_clk_period(st
+ 
+ void bcma_core_pcie2_init(struct bcma_drv_pcie2 *pcie2)
+ {
+-	struct bcma_chipinfo *ci = &pcie2->core->bus->chipinfo;
++	struct bcma_bus *bus = pcie2->core->bus;
++	struct bcma_chipinfo *ci = &bus->chipinfo;
+ 	u32 tmp;
+ 
+ 	tmp = pcie2_read32(pcie2, BCMA_CORE_PCIE2_SPROM(54));
+ 	if ((tmp & 0xe) >> 1 == 2)
+ 		bcma_core_pcie2_cfg_write(pcie2, 0x4e0, 0x17);
+ 
+-	/* TODO: Do we need pcie_reqsize? */
++	switch (bus->chipinfo.id) {
++	case BCMA_CHIP_ID_BCM4360:
++	case BCMA_CHIP_ID_BCM4352:
++		pcie2->reqsize = 1024;
++		break;
++	default:
++		pcie2->reqsize = 128;
++		break;
++	}
+ 
+ 	if (ci->id == BCMA_CHIP_ID_BCM4360 && ci->rev > 3)
+ 		bcma_core_pcie2_war_delay_perst_enab(pcie2, true);
+@@ -173,3 +183,18 @@ void bcma_core_pcie2_init(struct bcma_dr
+ 	pciedev_crwlpciegen2_180(pcie2);
+ 	pciedev_crwlpciegen2_182(pcie2);
+ }
++
++/**************************************************
++ * Runtime ops.
++ **************************************************/
++
++void bcma_core_pcie2_up(struct bcma_drv_pcie2 *pcie2)
++{
++	struct bcma_bus *bus = pcie2->core->bus;
++	struct pci_dev *dev = bus->host_pci;
++	int err;
++
++	err = pcie_set_readrq(dev, pcie2->reqsize);
++	if (err)
++		bcma_err(bus, "Error setting PCI_EXP_DEVCTL_READRQ: %d\n", err);
++}
+--- a/drivers/bcma/host_pci.c
++++ b/drivers/bcma/host_pci.c
+@@ -213,16 +213,26 @@ static int bcma_host_pci_probe(struct pc
+ 	/* Initialize struct, detect chip */
+ 	bcma_init_bus(bus);
+ 
++	/* Scan bus to find out generation of PCIe core */
++	err = bcma_bus_scan(bus);
++	if (err)
++		goto err_pci_unmap_mmio;
++
++	if (bcma_find_core(bus, BCMA_CORE_PCIE2))
++		bus->host_is_pcie2 = true;
++
+ 	/* Register */
+ 	err = bcma_bus_register(bus);
+ 	if (err)
+-		goto err_pci_unmap_mmio;
++		goto err_unregister_cores;
+ 
+ 	pci_set_drvdata(dev, bus);
+ 
+ out:
+ 	return err;
+ 
++err_unregister_cores:
++	bcma_unregister_cores(bus);
+ err_pci_unmap_mmio:
+ 	pci_iounmap(dev, bus->mmio);
+ err_pci_release_regions:
+@@ -283,9 +293,12 @@ static const struct pci_device_id bcma_p
+ 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4357) },
+ 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4358) },
+ 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4359) },
++	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4360) },
+ 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4365) },
++	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x43a0) },
+ 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x43a9) },
+ 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x43aa) },
++	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x43b1) },
+ 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4727) },
+ 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 43227) },	/* 0xa8db, BCM43217 (sic!) */
+ 	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 43228) },	/* 0xa8dc */
+@@ -310,3 +323,31 @@ void __exit bcma_host_pci_exit(void)
+ {
+ 	pci_unregister_driver(&bcma_pci_bridge_driver);
+ }
++
++/**************************************************
++ * Runtime ops for drivers.
++ **************************************************/
++
++/* See also pcicore_up */
++void bcma_host_pci_up(struct bcma_bus *bus)
++{
++	if (bus->hosttype != BCMA_HOSTTYPE_PCI)
++		return;
++
++	if (bus->host_is_pcie2)
++		bcma_core_pcie2_up(&bus->drv_pcie2);
++	else
++		bcma_core_pci_up(&bus->drv_pci[0]);
++}
++EXPORT_SYMBOL_GPL(bcma_host_pci_up);
++
++/* See also pcicore_down */
++void bcma_host_pci_down(struct bcma_bus *bus)
++{
++	if (bus->hosttype != BCMA_HOSTTYPE_PCI)
++		return;
++
++	if (!bus->host_is_pcie2)
++		bcma_core_pci_down(&bus->drv_pci[0]);
++}
++EXPORT_SYMBOL_GPL(bcma_host_pci_down);
+--- a/drivers/bcma/main.c
++++ b/drivers/bcma/main.c
+@@ -363,7 +363,7 @@ static int bcma_register_devices(struct
+ 	return 0;
+ }
+ 
+-static void bcma_unregister_cores(struct bcma_bus *bus)
++void bcma_unregister_cores(struct bcma_bus *bus)
+ {
+ 	struct bcma_device *core, *tmp;
+ 
+--- a/drivers/net/wireless/b43/main.c
++++ b/drivers/net/wireless/b43/main.c
+@@ -4819,7 +4819,7 @@ static void b43_wireless_core_exit(struc
+ 	switch (dev->dev->bus_type) {
+ #ifdef CONFIG_B43_BCMA
+ 	case B43_BUS_BCMA:
+-		bcma_core_pci_down(dev->dev->bdev->bus);
++		bcma_host_pci_down(dev->dev->bdev->bus);
+ 		break;
+ #endif
+ #ifdef CONFIG_B43_SSB
+@@ -4866,9 +4866,9 @@ static int b43_wireless_core_init(struct
+ 	switch (dev->dev->bus_type) {
+ #ifdef CONFIG_B43_BCMA
+ 	case B43_BUS_BCMA:
+-		bcma_core_pci_irq_ctl(&dev->dev->bdev->bus->drv_pci[0],
++		bcma_core_pci_irq_ctl(dev->dev->bdev->bus,
+ 				      dev->dev->bdev, true);
+-		bcma_core_pci_up(dev->dev->bdev->bus);
++		bcma_host_pci_up(dev->dev->bdev->bus);
+ 		break;
+ #endif
+ #ifdef CONFIG_B43_SSB
+--- a/drivers/net/wireless/brcm80211/brcmsmac/main.c
++++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c
+@@ -4668,7 +4668,7 @@ static int brcms_b_attach(struct brcms_c
+ 	brcms_c_coredisable(wlc_hw);
+ 
+ 	/* Match driver "down" state */
+-	bcma_core_pci_down(wlc_hw->d11core->bus);
++	bcma_host_pci_down(wlc_hw->d11core->bus);
+ 
+ 	/* turn off pll and xtal to match driver "down" state */
+ 	brcms_b_xtal(wlc_hw, OFF);
+@@ -4959,7 +4959,7 @@ static int brcms_b_up_prep(struct brcms_
+ 	 * Configure pci/pcmcia here instead of in brcms_c_attach()
+ 	 * to allow mfg hotswap:  down, hotswap (chip power cycle), up.
+ 	 */
+-	bcma_core_pci_irq_ctl(&wlc_hw->d11core->bus->drv_pci[0], wlc_hw->d11core,
++	bcma_core_pci_irq_ctl(wlc_hw->d11core->bus, wlc_hw->d11core,
+ 			      true);
+ 
+ 	/*
+@@ -4969,12 +4969,12 @@ static int brcms_b_up_prep(struct brcms_
+ 	 */
+ 	if (brcms_b_radio_read_hwdisabled(wlc_hw)) {
+ 		/* put SB PCI in down state again */
+-		bcma_core_pci_down(wlc_hw->d11core->bus);
++		bcma_host_pci_down(wlc_hw->d11core->bus);
+ 		brcms_b_xtal(wlc_hw, OFF);
+ 		return -ENOMEDIUM;
+ 	}
+ 
+-	bcma_core_pci_up(wlc_hw->d11core->bus);
++	bcma_host_pci_up(wlc_hw->d11core->bus);
+ 
+ 	/* reset the d11 core */
+ 	brcms_b_corereset(wlc_hw, BRCMS_USE_COREFLAGS);
+@@ -5171,7 +5171,7 @@ static int brcms_b_down_finish(struct br
+ 
+ 		/* turn off primary xtal and pll */
+ 		if (!wlc_hw->noreset) {
+-			bcma_core_pci_down(wlc_hw->d11core->bus);
++			bcma_host_pci_down(wlc_hw->d11core->bus);
+ 			brcms_b_xtal(wlc_hw, OFF);
+ 		}
+ 	}
+--- a/include/linux/bcma/bcma.h
++++ b/include/linux/bcma/bcma.h
+@@ -434,6 +434,9 @@ static inline struct bcma_device *bcma_f
+ 	return bcma_find_core_unit(bus, coreid, 0);
+ }
+ 
++extern void bcma_host_pci_up(struct bcma_bus *bus);
++extern void bcma_host_pci_down(struct bcma_bus *bus);
++
+ extern bool bcma_core_is_enabled(struct bcma_device *core);
+ extern void bcma_core_disable(struct bcma_device *core, u32 flags);
+ extern int bcma_core_enable(struct bcma_device *core, u32 flags);
+--- a/include/linux/bcma/bcma_driver_pci.h
++++ b/include/linux/bcma/bcma_driver_pci.h
+@@ -240,10 +240,8 @@ struct bcma_drv_pci {
+ 
+ extern void bcma_core_pci_early_init(struct bcma_drv_pci *pc);
+ extern void bcma_core_pci_init(struct bcma_drv_pci *pc);
+-extern int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc,
++extern int bcma_core_pci_irq_ctl(struct bcma_bus *bus,
+ 				 struct bcma_device *core, bool enable);
+-extern void bcma_core_pci_up(struct bcma_bus *bus);
+-extern void bcma_core_pci_down(struct bcma_bus *bus);
+ extern void bcma_core_pci_power_save(struct bcma_bus *bus, bool up);
+ 
+ extern int bcma_core_pci_pcibios_map_irq(const struct pci_dev *dev);
+--- a/include/linux/bcma/bcma_driver_pcie2.h
++++ b/include/linux/bcma/bcma_driver_pcie2.h
+@@ -143,6 +143,8 @@
+ 
+ struct bcma_drv_pcie2 {
+ 	struct bcma_device *core;
++
++	u16 reqsize;
+ };
+ 
+ #define pcie2_read16(pcie2, offset)		bcma_read16((pcie2)->core, offset)