* Fix pci ops for secondary PCIC
* Do not reserve 1MB for PCI MEM region (leave PCIBIOS_MIN_MEM zero)
* Use NETDEV_REGISTER event to provide ethernet addresses for internal
NICs (tc35815 driver)
* Check return value of early_read_config_word()
Signed-off-by: Atsushi Nemoto <anemo@xxxxxxxxxxxxx>
---
This is an updated patch with same subject sent on 10 May 2007.
This patch depends on:
[PATCH 2/4] rbtx4938: Convert SPI codes to use generic SPI drivers
arch/mips/pci/ops-tx4938.c | 80 +++++++++++++++++-----------
arch/mips/tx4938/toshiba_rbtx4938/setup.c | 52 +++++++++++--------
2 files changed, 79 insertions(+), 53 deletions(-)
diff --git a/arch/mips/pci/ops-tx4938.c b/arch/mips/pci/ops-tx4938.c
index 4450070..a450c40 100644
--- a/arch/mips/pci/ops-tx4938.c
+++ b/arch/mips/pci/ops-tx4938.c
@@ -46,50 +46,63 @@ struct resource tx4938_pcic1_pci_mem_resource = {
.flags = IORESOURCE_MEM
};
-static int mkaddr(int bus, int dev_fn, int where, int *flagsp)
+static int mkaddr(int bus, int dev_fn, int where,
+ struct tx4938_pcic_reg *pcicptr)
{
if (bus > 0) {
/* Type 1 configuration */
- tx4938_pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) |
+ pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) |
((dev_fn & 0xff) << 0x08) | (where & 0xfc) | 1;
} else {
if (dev_fn >= PCI_DEVFN(TX4938_PCIC_MAX_DEVNU, 0))
return -1;
/* Type 0 configuration */
- tx4938_pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) |
+ pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) |
((dev_fn & 0xff) << 0x08) | (where & 0xfc);
}
/* clear M_ABORT and Disable M_ABORT Int. */
- tx4938_pcicptr->pcistatus =
- (tx4938_pcicptr->pcistatus & 0x0000ffff) |
+ pcicptr->pcistatus =
+ (pcicptr->pcistatus & 0x0000ffff) |
(PCI_STATUS_REC_MASTER_ABORT << 16);
- tx4938_pcicptr->pcimask &= ~PCI_STATUS_REC_MASTER_ABORT;
+ pcicptr->pcimask &= ~PCI_STATUS_REC_MASTER_ABORT;
return 0;
}
-static int check_abort(int flags)
+static int check_abort(struct tx4938_pcic_reg *pcicptr)
{
int code = PCIBIOS_SUCCESSFUL;
/* wait write cycle completion before checking error status */
- while (tx4938_pcicptr->pcicstatus & TX4938_PCIC_PCICSTATUS_IWB)
+ while (pcicptr->pcicstatus & TX4938_PCIC_PCICSTATUS_IWB)
;
- if (tx4938_pcicptr->pcistatus & (PCI_STATUS_REC_MASTER_ABORT << 16)) {
- tx4938_pcicptr->pcistatus =
- (tx4938_pcicptr->
+ if (pcicptr->pcistatus & (PCI_STATUS_REC_MASTER_ABORT << 16)) {
+ pcicptr->pcistatus =
+ (pcicptr->
pcistatus & 0x0000ffff) | (PCI_STATUS_REC_MASTER_ABORT
<< 16);
- tx4938_pcicptr->pcimask |= PCI_STATUS_REC_MASTER_ABORT;
+ pcicptr->pcimask |= PCI_STATUS_REC_MASTER_ABORT;
code = PCIBIOS_DEVICE_NOT_FOUND;
}
return code;
}
+extern struct pci_controller tx4938_pci_controller[];
+extern struct tx4938_pcic_reg *get_tx4938_pcicptr(int ch);
+
+static struct tx4938_pcic_reg *pci_bus_to_pcicptr(struct pci_bus *bus)
+{
+ struct pci_controller *channel = bus->sysdata;
+ return get_tx4938_pcicptr(channel - &tx4938_pci_controller[0]);
+}
+
static int tx4938_pcibios_read_config(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 * val)
{
- int flags, retval, dev, busno, func;
+ int retval, dev, busno, func;
+ struct tx4938_pcic_reg *pcicptr = pci_bus_to_pcicptr(bus);
+ void __iomem *cfgdata =
+ (void __iomem *)(unsigned long)&pcicptr->g2pcfgdata;
dev = PCI_SLOT(devfn);
func = PCI_FUNC(devfn);
@@ -101,32 +114,32 @@ static int tx4938_pcibios_read_config(struct pci_bus *bus, unsigned int devfn,
busno = 0;
}
- if (mkaddr(busno, devfn, where, &flags))
+ if (mkaddr(busno, devfn, where, pcicptr))
return -1;
switch (size) {
case 1:
- *val = *(volatile u8 *) ((unsigned long) & tx4938_pcicptr->g2pcfgdata |
#ifdef __BIG_ENDIAN
- ((where & 3) ^ 3));
+ cfgdata += (where & 3) ^ 3;
#else
- (where & 3));
+ cfgdata += where & 3;
#endif
+ *val = __raw_readb(cfgdata);
break;
case 2:
- *val = *(volatile u16 *) ((unsigned long) & tx4938_pcicptr->g2pcfgdata |
#ifdef __BIG_ENDIAN
- ((where & 3) ^ 2));
+ cfgdata += (where & 2) ^ 2;
#else
- (where & 3));
+ cfgdata += where & 2;
#endif
+ *val = __raw_readw(cfgdata);
break;
case 4:
- *val = tx4938_pcicptr->g2pcfgdata;
+ *val = __raw_readl(cfgdata);
break;
}
- retval = check_abort(flags);
+ retval = check_abort(pcicptr);
if (retval == PCIBIOS_DEVICE_NOT_FOUND)
*val = 0xffffffff;
@@ -136,7 +149,10 @@ static int tx4938_pcibios_read_config(struct pci_bus *bus, unsigned int devfn,
static int tx4938_pcibios_write_config(struct pci_bus *bus, unsigned int devfn, int where,
int size, u32 val)
{
- int flags, dev, busno, func;
+ int dev, busno, func;
+ struct tx4938_pcic_reg *pcicptr = pci_bus_to_pcicptr(bus);
+ void __iomem *cfgdata =
+ (void __iomem *)(unsigned long)&pcicptr->g2pcfgdata;
busno = bus->number;
dev = PCI_SLOT(devfn);
@@ -149,32 +165,32 @@ static int tx4938_pcibios_write_config(struct pci_bus *bus, unsigned int devfn,
busno = 0;
}
- if (mkaddr(busno, devfn, where, &flags))
+ if (mkaddr(busno, devfn, where, pcicptr))
return -1;
switch (size) {
case 1:
- *(volatile u8 *) ((unsigned long) & tx4938_pcicptr->g2pcfgdata |
#ifdef __BIG_ENDIAN
- ((where & 3) ^ 3)) = val;
+ cfgdata += (where & 3) ^ 3;
#else
- (where & 3)) = val;
+ cfgdata += where & 3;
#endif
+ __raw_writeb(val, cfgdata);
break;
case 2:
- *(volatile u16 *) ((unsigned long) & tx4938_pcicptr->g2pcfgdata |
#ifdef __BIG_ENDIAN
- ((where & 0x3) ^ 0x2)) = val;
+ cfgdata += (where & 2) ^ 2;
#else
- (where & 3)) = val;
+ cfgdata += where & 2;
#endif
+ __raw_writew(val, cfgdata);
break;
case 4:
- tx4938_pcicptr->g2pcfgdata = val;
+ __raw_writel(val, cfgdata);
break;
}
- return check_abort(flags);
+ return check_abort(pcicptr);
}
struct pci_ops tx4938_pci_ops = {
diff --git a/arch/mips/tx4938/toshiba_rbtx4938/setup.c b/arch/mips/tx4938/toshiba_rbtx4938/setup.c
index a835870..6128508 100644
--- a/arch/mips/tx4938/toshiba_rbtx4938/setup.c
+++ b/arch/mips/tx4938/toshiba_rbtx4938/setup.c
@@ -20,6 +20,7 @@
#include <linux/pci.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
+#include <linux/netdevice.h>
#include <asm/wbflush.h>
#include <asm/reboot.h>
@@ -351,7 +352,7 @@ static struct pci_dev *fake_pci_dev(struct pci_controller *hose,
static struct pci_dev dev;
static struct pci_bus bus;
- dev.sysdata = (void *)hose;
+ dev.sysdata = bus.sysdata = hose;
dev.devfn = devfn;
bus.number = busnr;
bus.ops = hose->pci_ops;
@@ -384,8 +385,10 @@ int txboard_pci66_check(struct pci_controller *hose, int top_bus, int current_bu
printk("PCI: Checking 66MHz capabilities...\n");
for (pci_devfn=devfn_start; pci_devfn<devfn_stop; pci_devfn++) {
- early_read_config_word(hose, top_bus, current_bus, pci_devfn,
- PCI_VENDOR_ID, &vid);
+ if (early_read_config_word(hose, top_bus, current_bus,
+ pci_devfn, PCI_VENDOR_ID,
+ &vid) != PCIBIOS_SUCCESSFUL)
+ continue;
if (vid == 0xffff) continue;
@@ -462,7 +465,6 @@ static int __init tx4938_pcibios_init(void)
int extarb = !(tx4938_ccfgptr->ccfg & TX4938_CCFG_PCIXARB);
PCIBIOS_MIN_IO = 0x00001000UL;
- PCIBIOS_MIN_MEM = 0x01000000UL;
mem_base[0] = txboard_request_phys_region_shrink(&mem_size[0]);
io_base[0] = txboard_request_phys_region_shrink(&io_size[0]);
@@ -600,27 +602,35 @@ static int __init rbtx4938_ethaddr_init(void)
}
device_initcall(rbtx4938_ethaddr_init);
-int rbtx4938_get_tx4938_ethaddr(struct pci_dev *dev, unsigned char *addr)
+static int rbtx4938_netdev_event(struct notifier_block *this,
+ unsigned long event,
+ void *ptr)
{
- struct pci_controller *channel = (struct pci_controller *)dev->bus->sysdata;
- int ch = 0;
-
- if (channel != &tx4938_pci_controller[1])
- return -ENODEV;
- /* TX4938 PCIC1 */
- switch (PCI_SLOT(dev->devfn)) {
- case TX4938_PCIC_IDSEL_AD_TO_SLOT(31):
- ch = 0;
- break;
- case TX4938_PCIC_IDSEL_AD_TO_SLOT(30):
- ch = 1;
- break;
- default:
- return -ENODEV;
+ struct net_device *dev = ptr;
+ if (event == NETDEV_REGISTER) {
+ int ch = -1;
+ if (dev->irq == RBTX4938_IRQ_IRC + TX4938_IR_ETH0)
+ ch = 0;
+ else if (dev->irq == RBTX4938_IRQ_IRC + TX4938_IR_ETH1)
+ ch = 1;
+ if (ch >= 0)
+ memcpy(dev->dev_addr,
+ &rbtx4938_ethaddr[4 + 6 * ch], 6);
}
- memcpy(addr, &rbtx4938_ethaddr[4 + 6 * ch], 6);
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block rbtx4938_netdev_notifier = {
+ .notifier_call = rbtx4938_netdev_event,
+};
+
+static int __init rbtx4938_setup_eth(void)
+{
+ if (tx4938_ccfgptr->pcfg & (TX4938_PCFG_ETH0_SEL|TX4938_PCFG_ETH1_SEL))
+ register_netdevice_notifier(&rbtx4938_netdev_notifier);
return 0;
}
+device_initcall(rbtx4938_setup_eth);
#endif /* CONFIG_PCI */
static void __init rbtx4938_spi_setup(void)
