[PARISC] Update dino from parisc tree

Fix card-mode Dino crashes on 725 (and probably other Snake) systems.
Dino was coming up in fatal mode after a warm reboot.  Resetting Dino
brings it out of fatal mode, so do that if the status register indicates
we're in fatal mode.  Since this was never observed on any later systems,
I presume firmware does this for us on those.

Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>

Add debug statements in the cfg_read and cfg_write functions
Fix debug statements from the IRQ overhaul last winter
Rename dino_driver_callback() to dino_probe()

Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

1 files changed, 22 insertions, 10 deletions

diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
index 37820b0ae5e..5ab75334c57 100644
--- a/drivers/parisc/dino.c
+++ b/drivers/parisc/dino.c
@@ -178,6 +178,8 @@ static int dino_cfg_read(struct pci_bus *bus, unsigned int devfn, int where,
 	void __iomem *base_addr = d->hba.base_addr;
 	unsigned long flags;
 
+	DBG("%s: %p, %d, %d, %d\n", __FUNCTION__, base_addr, devfn, where,
+									size);
 	spin_lock_irqsave(&d->dinosaur_pen, flags);
 
 	/* tell HW which CFG address */
@@ -211,6 +213,8 @@ static int dino_cfg_write(struct pci_bus *bus, unsigned int devfn, int where,
 	void __iomem *base_addr = d->hba.base_addr;
 	unsigned long flags;
 
+	DBG("%s: %p, %d, %d, %d\n", __FUNCTION__, base_addr, devfn, where,
+									size);
 	spin_lock_irqsave(&d->dinosaur_pen, flags);
 
 	/* avoid address stepping feature */
@@ -295,7 +299,7 @@ static void dino_disable_irq(unsigned int irq)
 	struct dino_device *dino_dev = irq_desc[irq].handler_data;
 	int local_irq = gsc_find_local_irq(irq, dino_dev->global_irq, irq);
 
-	DBG(KERN_WARNING "%s(0x%p, %d)\n", __FUNCTION__, irq_dev, irq);
+	DBG(KERN_WARNING "%s(0x%p, %d)\n", __FUNCTION__, dino_dev, irq);
 
 	/* Clear the matching bit in the IMR register */
 	dino_dev->imr &= ~(DINO_MASK_IRQ(local_irq));
@@ -308,7 +312,7 @@ static void dino_enable_irq(unsigned int irq)
 	int local_irq = gsc_find_local_irq(irq, dino_dev->global_irq, irq);
 	u32 tmp;
 
-	DBG(KERN_WARNING "%s(0x%p, %d)\n", __FUNCTION__, irq_dev, irq);
+	DBG(KERN_WARNING "%s(0x%p, %d)\n", __FUNCTION__, dino_dev, irq);
 
 	/*
 	** clear pending IRQ bits
@@ -490,7 +494,7 @@ dino_card_setup(struct pci_bus *bus, void __iomem *base_addr)
 		if (res->start == F_EXTEND(0xf0000000UL | (i * _8MB)))
 			break;
 	}
-	DBG("DINO GSC WRITE i=%d, start=%lx, dino addr = %lx\n",
+	DBG("DINO GSC WRITE i=%d, start=%lx, dino addr = %p\n",
 	    i, res->start, base_addr + DINO_IO_ADDR_EN);
 	__raw_writel(1 << i, base_addr + DINO_IO_ADDR_EN);
 }
@@ -683,6 +687,14 @@ static void __init
 dino_card_init(struct dino_device *dino_dev)
 {
 	u32 brdg_feat = 0x00784e05;
+	unsigned long status;
+
+	status = __raw_readl(dino_dev->hba.base_addr+DINO_IO_STATUS);
+	if (status & 0x0000ff80) {
+		__raw_writel(0x00000005,
+				dino_dev->hba.base_addr+DINO_IO_COMMAND);
+		udelay(1);
+	}
 
 	__raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_GMASK);
 	__raw_writel(0x00000001, dino_dev->hba.base_addr+DINO_IO_FBB_EN);
@@ -928,11 +940,11 @@ static int __init dino_probe(struct parisc_device *dev)
 		}
 	}
 
-	printk("%s version %s found at 0x%lx\n", name, version, dev->hpa);
+	printk("%s version %s found at 0x%lx\n", name, version, hpa);
 
-	if (!request_mem_region(dev->hpa, PAGE_SIZE, name)) {
+	if (!request_mem_region(hpa, PAGE_SIZE, name)) {
 		printk(KERN_ERR "DINO: Hey! Someone took my MMIO space (0x%ld)!\n",
-			dev->hpa);
+			hpa);
 		return 1;
 	}
 
@@ -940,12 +952,12 @@ static int __init dino_probe(struct parisc_device *dev)
 	if (is_cujo && dev->id.hversion_rev == 1) {
 #ifdef CONFIG_IOMMU_CCIO
 		printk(KERN_WARNING "Enabling Cujo 2.0 bug workaround\n");
-		if (dev->hpa == (unsigned long)CUJO_RAVEN_ADDR) {
+		if (hpa == (unsigned long)CUJO_RAVEN_ADDR) {
 			ccio_cujo20_fixup(dev, CUJO_RAVEN_BADPAGE);
-		} else if (dev->hpa == (unsigned long)CUJO_FIREHAWK_ADDR) {
+		} else if (hpa == (unsigned long)CUJO_FIREHAWK_ADDR) {
 			ccio_cujo20_fixup(dev, CUJO_FIREHAWK_BADPAGE);
 		} else {
-			printk("Don't recognise Cujo at address 0x%lx, not enabling workaround\n", dev->hpa);
+			printk("Don't recognise Cujo at address 0x%lx, not enabling workaround\n", hpa);
 		}
 #endif
 	} else if (!is_cujo && !is_card_dino(&dev->id) &&
@@ -970,7 +982,7 @@ static int __init dino_probe(struct parisc_device *dev)
 	memset(dino_dev, 0, sizeof(struct dino_device));
 
 	dino_dev->hba.dev = dev;
-	dino_dev->hba.base_addr = ioremap(dev->hpa, 4096); /* faster access */
+	dino_dev->hba.base_addr = ioremap(hpa, 4096);
 	dino_dev->hba.lmmio_space_offset = 0;	/* CPU addrs == bus addrs */
 	spin_lock_init(&dino_dev->dinosaur_pen);
 	dino_dev->hba.iommu = ccio_get_iommu(dev);