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-rw-r--r--arch/mips/pci/ops-tx3927.c80
-rw-r--r--arch/mips/pci/ops-tx4927.c118
-rw-r--r--arch/mips/pci/pci-tx4927.c10
-rw-r--r--arch/mips/pci/pci-tx4938.c10
-rw-r--r--arch/mips/pci/pci.c6
5 files changed, 196 insertions, 28 deletions
diff --git a/arch/mips/pci/ops-tx3927.c b/arch/mips/pci/ops-tx3927.c
index 8a17a39e5bf..31c15019659 100644
--- a/arch/mips/pci/ops-tx3927.c
+++ b/arch/mips/pci/ops-tx3927.c
@@ -37,45 +37,48 @@
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/init.h>
+#include <linux/interrupt.h>
#include <asm/addrspace.h>
+#include <asm/txx9irq.h>
+#include <asm/txx9/pci.h>
#include <asm/txx9/tx3927.h>
-static inline int mkaddr(unsigned char bus, unsigned char dev_fn,
- unsigned char where)
+static int mkaddr(struct pci_bus *bus, unsigned char devfn, unsigned char where)
{
- if (bus == 0 && dev_fn >= PCI_DEVFN(TX3927_PCIC_MAX_DEVNU, 0))
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- tx3927_pcicptr->ica = ((bus & 0xff) << 0x10) |
- ((dev_fn & 0xff) << 0x08) |
- (where & 0xfc);
+ if (bus->parent == NULL &&
+ devfn >= PCI_DEVFN(TX3927_PCIC_MAX_DEVNU, 0))
+ return -1;
+ tx3927_pcicptr->ica =
+ ((bus->number & 0xff) << 0x10) |
+ ((devfn & 0xff) << 0x08) |
+ (where & 0xfc) | (bus->parent ? 1 : 0);
/* clear M_ABORT and Disable M_ABORT Int. */
tx3927_pcicptr->pcistat |= PCI_STATUS_REC_MASTER_ABORT;
tx3927_pcicptr->pcistatim &= ~PCI_STATUS_REC_MASTER_ABORT;
-
- return PCIBIOS_SUCCESSFUL;
+ return 0;
}
static inline int check_abort(void)
{
- if (tx3927_pcicptr->pcistat & PCI_STATUS_REC_MASTER_ABORT)
+ if (tx3927_pcicptr->pcistat & PCI_STATUS_REC_MASTER_ABORT) {
tx3927_pcicptr->pcistat |= PCI_STATUS_REC_MASTER_ABORT;
tx3927_pcicptr->pcistatim |= PCI_STATUS_REC_MASTER_ABORT;
+ /* flush write buffer */
+ iob();
return PCIBIOS_DEVICE_NOT_FOUND;
-
+ }
return PCIBIOS_SUCCESSFUL;
}
static int tx3927_pci_read_config(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 * val)
{
- int ret;
-
- ret = mkaddr(bus->number, devfn, where);
- if (ret)
- return ret;
+ if (mkaddr(bus, devfn, where)) {
+ *val = 0xffffffff;
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ }
switch (size) {
case 1:
@@ -97,11 +100,8 @@ static int tx3927_pci_read_config(struct pci_bus *bus, unsigned int devfn,
static int tx3927_pci_write_config(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 val)
{
- int ret;
-
- ret = mkaddr(bus->number, devfn, where);
- if (ret)
- return ret;
+ if (mkaddr(bus, devfn, where))
+ return PCIBIOS_DEVICE_NOT_FOUND;
switch (size) {
case 1:
@@ -117,11 +117,6 @@ static int tx3927_pci_write_config(struct pci_bus *bus, unsigned int devfn,
tx3927_pcicptr->icd = cpu_to_le32(val);
}
- if (tx3927_pcicptr->pcistat & PCI_STATUS_REC_MASTER_ABORT)
- tx3927_pcicptr->pcistat |= PCI_STATUS_REC_MASTER_ABORT;
- tx3927_pcicptr->pcistatim |= PCI_STATUS_REC_MASTER_ABORT;
- return PCIBIOS_DEVICE_NOT_FOUND;
-
return check_abort();
}
@@ -202,3 +197,34 @@ void __init tx3927_pcic_setup(struct pci_controller *channel,
PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
local_irq_restore(flags);
}
+
+static irqreturn_t tx3927_pcierr_interrupt(int irq, void *dev_id)
+{
+ struct pt_regs *regs = get_irq_regs();
+
+ if (txx9_pci_err_action != TXX9_PCI_ERR_IGNORE) {
+ printk(KERN_WARNING "PCI error interrupt at 0x%08lx.\n",
+ regs->cp0_epc);
+ printk(KERN_WARNING "pcistat:%02x, lbstat:%04lx\n",
+ tx3927_pcicptr->pcistat, tx3927_pcicptr->lbstat);
+ }
+ if (txx9_pci_err_action != TXX9_PCI_ERR_PANIC) {
+ /* clear all pci errors */
+ tx3927_pcicptr->pcistat |= TX3927_PCIC_PCISTATIM_ALL;
+ tx3927_pcicptr->istat = TX3927_PCIC_IIM_ALL;
+ tx3927_pcicptr->tstat = TX3927_PCIC_TIM_ALL;
+ tx3927_pcicptr->lbstat = TX3927_PCIC_LBIM_ALL;
+ return IRQ_HANDLED;
+ }
+ console_verbose();
+ panic("PCI error.");
+}
+
+void __init tx3927_setup_pcierr_irq(void)
+{
+ if (request_irq(TXX9_IRQ_BASE + TX3927_IR_PCI,
+ tx3927_pcierr_interrupt,
+ IRQF_DISABLED, "PCI error",
+ (void *)TX3927_PCIC_REG))
+ printk(KERN_WARNING "Failed to request irq for PCIERR\n");
+}
diff --git a/arch/mips/pci/ops-tx4927.c b/arch/mips/pci/ops-tx4927.c
index c6b49bccd27..5989e747527 100644
--- a/arch/mips/pci/ops-tx4927.c
+++ b/arch/mips/pci/ops-tx4927.c
@@ -16,6 +16,8 @@
* option) any later version.
*/
#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <asm/txx9/pci.h>
#include <asm/txx9/tx4927pcic.h>
static struct {
@@ -85,6 +87,8 @@ static int check_abort(struct tx4927_pcic_reg __iomem *pcicptr)
__raw_writel((__raw_readl(&pcicptr->pcistatus) & 0x0000ffff)
| (PCI_STATUS_REC_MASTER_ABORT << 16),
&pcicptr->pcistatus);
+ /* flush write buffer */
+ iob();
code = PCIBIOS_DEVICE_NOT_FOUND;
}
return code;
@@ -192,6 +196,28 @@ static struct {
.gbwc = 0xfe0, /* 4064 GBUSCLK for CCFG.GTOT=0b11 */
};
+char *__devinit tx4927_pcibios_setup(char *str)
+{
+ unsigned long val;
+
+ if (!strncmp(str, "trdyto=", 7)) {
+ if (strict_strtoul(str + 7, 0, &val) == 0)
+ tx4927_pci_opts.trdyto = val;
+ return NULL;
+ }
+ if (!strncmp(str, "retryto=", 8)) {
+ if (strict_strtoul(str + 8, 0, &val) == 0)
+ tx4927_pci_opts.retryto = val;
+ return NULL;
+ }
+ if (!strncmp(str, "gbwc=", 5)) {
+ if (strict_strtoul(str + 5, 0, &val) == 0)
+ tx4927_pci_opts.gbwc = val;
+ return NULL;
+ }
+ return str;
+}
+
void __init tx4927_pcic_setup(struct tx4927_pcic_reg __iomem *pcicptr,
struct pci_controller *channel, int extarb)
{
@@ -406,3 +432,95 @@ void tx4927_report_pcic_status(void)
tx4927_report_pcic_status1(pcicptrs[i].pcicptr);
}
}
+
+static void tx4927_dump_pcic_settings1(struct tx4927_pcic_reg __iomem *pcicptr)
+{
+ int i;
+ __u32 __iomem *preg = (__u32 __iomem *)pcicptr;
+
+ printk(KERN_INFO "tx4927 pcic (0x%p) settings:", pcicptr);
+ for (i = 0; i < sizeof(struct tx4927_pcic_reg); i += 4, preg++) {
+ if (i % 32 == 0) {
+ printk(KERN_CONT "\n");
+ printk(KERN_INFO "%04x:", i);
+ }
+ /* skip registers with side-effects */
+ if (i == offsetof(struct tx4927_pcic_reg, g2pintack)
+ || i == offsetof(struct tx4927_pcic_reg, g2pspc)
+ || i == offsetof(struct tx4927_pcic_reg, g2pcfgadrs)
+ || i == offsetof(struct tx4927_pcic_reg, g2pcfgdata)) {
+ printk(KERN_CONT " XXXXXXXX");
+ continue;
+ }
+ printk(KERN_CONT " %08x", __raw_readl(preg));
+ }
+ printk(KERN_CONT "\n");
+}
+
+void tx4927_dump_pcic_settings(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(pcicptrs); i++) {
+ if (pcicptrs[i].pcicptr)
+ tx4927_dump_pcic_settings1(pcicptrs[i].pcicptr);
+ }
+}
+
+irqreturn_t tx4927_pcierr_interrupt(int irq, void *dev_id)
+{
+ struct pt_regs *regs = get_irq_regs();
+ struct tx4927_pcic_reg __iomem *pcicptr =
+ (struct tx4927_pcic_reg __iomem *)(unsigned long)dev_id;
+
+ if (txx9_pci_err_action != TXX9_PCI_ERR_IGNORE) {
+ printk(KERN_WARNING "PCIERR interrupt at 0x%0*lx\n",
+ (int)(2 * sizeof(unsigned long)), regs->cp0_epc);
+ tx4927_report_pcic_status1(pcicptr);
+ }
+ if (txx9_pci_err_action != TXX9_PCI_ERR_PANIC) {
+ /* clear all pci errors */
+ __raw_writel((__raw_readl(&pcicptr->pcistatus) & 0x0000ffff)
+ | (TX4927_PCIC_PCISTATUS_ALL << 16),
+ &pcicptr->pcistatus);
+ __raw_writel(TX4927_PCIC_G2PSTATUS_ALL, &pcicptr->g2pstatus);
+ __raw_writel(TX4927_PCIC_PBASTATUS_ALL, &pcicptr->pbastatus);
+ __raw_writel(TX4927_PCIC_PCICSTATUS_ALL, &pcicptr->pcicstatus);
+ return IRQ_HANDLED;
+ }
+ console_verbose();
+ tx4927_dump_pcic_settings1(pcicptr);
+ panic("PCI error.");
+}
+
+#ifdef CONFIG_TOSHIBA_FPCIB0
+static void __init tx4927_quirk_slc90e66_bridge(struct pci_dev *dev)
+{
+ struct tx4927_pcic_reg __iomem *pcicptr = pci_bus_to_pcicptr(dev->bus);
+
+ if (!pcicptr)
+ return;
+ if (__raw_readl(&pcicptr->pbacfg) & TX4927_PCIC_PBACFG_PBAEN) {
+ /* Reset Bus Arbiter */
+ __raw_writel(TX4927_PCIC_PBACFG_RPBA, &pcicptr->pbacfg);
+ /*
+ * swap reqBP and reqXP (raise priority of SLC90E66).
+ * SLC90E66(PCI-ISA bridge) is connected to REQ2 on
+ * PCI Backplane board.
+ */
+ __raw_writel(0x72543610, &pcicptr->pbareqport);
+ __raw_writel(0, &pcicptr->pbabm);
+ /* Use Fixed ParkMaster (required by SLC90E66) */
+ __raw_writel(TX4927_PCIC_PBACFG_FIXPA, &pcicptr->pbacfg);
+ /* Enable Bus Arbiter */
+ __raw_writel(TX4927_PCIC_PBACFG_FIXPA |
+ TX4927_PCIC_PBACFG_PBAEN,
+ &pcicptr->pbacfg);
+ printk(KERN_INFO "PCI: Use Fixed Park Master (REQPORT %08x)\n",
+ __raw_readl(&pcicptr->pbareqport));
+ }
+}
+#define PCI_DEVICE_ID_EFAR_SLC90E66_0 0x9460
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_0,
+ tx4927_quirk_slc90e66_bridge);
+#endif
diff --git a/arch/mips/pci/pci-tx4927.c b/arch/mips/pci/pci-tx4927.c
index 27e86a09dd4..aaa90059679 100644
--- a/arch/mips/pci/pci-tx4927.c
+++ b/arch/mips/pci/pci-tx4927.c
@@ -15,6 +15,7 @@
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/kernel.h>
+#include <linux/interrupt.h>
#include <asm/txx9/generic.h>
#include <asm/txx9/tx4927.h>
@@ -81,3 +82,12 @@ int __init tx4927_pciclk66_setup(void)
pciclk = -1;
return pciclk;
}
+
+void __init tx4927_setup_pcierr_irq(void)
+{
+ if (request_irq(TXX9_IRQ_BASE + TX4927_IR_PCIERR,
+ tx4927_pcierr_interrupt,
+ IRQF_DISABLED, "PCI error",
+ (void *)TX4927_PCIC_REG))
+ printk(KERN_WARNING "Failed to request irq for PCIERR\n");
+}
diff --git a/arch/mips/pci/pci-tx4938.c b/arch/mips/pci/pci-tx4938.c
index e5375511c2b..60e2c52c2c5 100644
--- a/arch/mips/pci/pci-tx4938.c
+++ b/arch/mips/pci/pci-tx4938.c
@@ -15,6 +15,7 @@
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/kernel.h>
+#include <linux/interrupt.h>
#include <asm/txx9/generic.h>
#include <asm/txx9/tx4938.h>
@@ -132,3 +133,12 @@ int tx4938_pcic1_map_irq(const struct pci_dev *dev, u8 slot)
}
return -1;
}
+
+void __init tx4938_setup_pcierr_irq(void)
+{
+ if (request_irq(TXX9_IRQ_BASE + TX4938_IR_PCIERR,
+ tx4927_pcierr_interrupt,
+ IRQF_DISABLED, "PCI error",
+ (void *)TX4927_PCIC_REG))
+ printk(KERN_WARNING "Failed to request irq for PCIERR\n");
+}
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index 77bd5b68dc4..c7fe6ec621e 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -328,7 +328,11 @@ EXPORT_SYMBOL(PCIBIOS_MIN_IO);
EXPORT_SYMBOL(PCIBIOS_MIN_MEM);
#endif
-char *pcibios_setup(char *str)
+char * (*pcibios_plat_setup)(char *str) __devinitdata;
+
+char *__devinit pcibios_setup(char *str)
{
+ if (pcibios_plat_setup)
+ return pcibios_plat_setup(str);
return str;
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-27 02:51:12 +0000