Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1044 insertions, 0 deletions

diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
new file mode 100644
index 00000000000..b0d2a73d1d4
--- /dev/null
+++ b/drivers/parisc/dino.c
@@ -0,0 +1,1044 @@
+/*
+**      DINO manager
+**
+**      (c) Copyright 1999 Red Hat Software
+**      (c) Copyright 1999 SuSE GmbH
+**      (c) Copyright 1999,2000 Hewlett-Packard Company
+**      (c) Copyright 2000 Grant Grundler
+**
+**      This program is free software; you can redistribute it and/or modify
+**      it under the terms of the GNU General Public License as published by
+**      the Free Software Foundation; either version 2 of the License, or
+**      (at your option) any later version.
+**
+**      This module provides access to Dino PCI bus (config/IOport spaces)
+**      and helps manage Dino IRQ lines.
+**
+**      Dino interrupt handling is a bit complicated.
+**      Dino always writes to the broadcast EIR via irr0 for now.
+**      (BIG WARNING: using broadcast EIR is a really bad thing for SMP!)
+**      Only one processor interrupt is used for the 11 IRQ line 
+**      inputs to dino.
+**
+**      The different between Built-in Dino and Card-Mode
+**      dino is in chip initialization and pci device initialization.
+**
+**      Linux drivers can only use Card-Mode Dino if pci devices I/O port
+**      BARs are configured and used by the driver. Programming MMIO address 
+**      requires substantial knowledge of available Host I/O address ranges
+**      is currently not supported.  Port/Config accessor functions are the
+**      same. "BIOS" differences are handled within the existing routines.
+*/
+
+/*      Changes :
+**      2001-06-14 : Clement Moyroud (moyroudc@esiee.fr)
+**              - added support for the integrated RS232.       
+*/
+
+/*
+** TODO: create a virtual address for each Dino HPA.
+**       GSC code might be able to do this since IODC data tells us
+**       how many pages are used. PCI subsystem could (must?) do this
+**       for PCI drivers devices which implement/use MMIO registers.
+*/
+
+#include <linux/config.h>
+#include <linux/delay.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>    /* for struct irqaction */
+#include <linux/spinlock.h>     /* for spinlock_t and prototypes */
+
+#include <asm/pdc.h>
+#include <asm/page.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/hardware.h>
+
+#include "gsc.h"
+
+#undef DINO_DEBUG
+
+#ifdef DINO_DEBUG
+#define DBG(x...) printk(x)
+#else
+#define DBG(x...)
+#endif
+
+/*
+** Config accessor functions only pass in the 8-bit bus number
+** and not the 8-bit "PCI Segment" number. Each Dino will be
+** assigned a PCI bus number based on "when" it's discovered.
+**
+** The "secondary" bus number is set to this before calling
+** pci_scan_bus(). If any PPB's are present, the scan will
+** discover them and update the "secondary" and "subordinate"
+** fields in Dino's pci_bus structure.
+**
+** Changes in the configuration *will* result in a different
+** bus number for each dino.
+*/
+
+#define is_card_dino(id) ((id)->hw_type == HPHW_A_DMA)
+
+#define DINO_IAR0               0x004
+#define DINO_IODC_ADDR          0x008
+#define DINO_IODC_DATA_0        0x008
+#define DINO_IODC_DATA_1        0x008
+#define DINO_IRR0               0x00C
+#define DINO_IAR1               0x010
+#define DINO_IRR1               0x014
+#define DINO_IMR                0x018
+#define DINO_IPR                0x01C
+#define DINO_TOC_ADDR           0x020
+#define DINO_ICR                0x024
+#define DINO_ILR                0x028
+#define DINO_IO_COMMAND         0x030
+#define DINO_IO_STATUS          0x034
+#define DINO_IO_CONTROL         0x038
+#define DINO_IO_GSC_ERR_RESP    0x040
+#define DINO_IO_ERR_INFO        0x044
+#define DINO_IO_PCI_ERR_RESP    0x048
+#define DINO_IO_FBB_EN          0x05c
+#define DINO_IO_ADDR_EN         0x060
+#define DINO_PCI_ADDR           0x064
+#define DINO_CONFIG_DATA        0x068
+#define DINO_IO_DATA            0x06c
+#define DINO_MEM_DATA           0x070   /* Dino 3.x only */
+#define DINO_GSC2X_CONFIG       0x7b4
+#define DINO_GMASK              0x800
+#define DINO_PAMR               0x804
+#define DINO_PAPR               0x808
+#define DINO_DAMODE             0x80c
+#define DINO_PCICMD             0x810
+#define DINO_PCISTS             0x814
+#define DINO_MLTIM              0x81c
+#define DINO_BRDG_FEAT          0x820
+#define DINO_PCIROR             0x824
+#define DINO_PCIWOR             0x828
+#define DINO_TLTIM              0x830
+
+#define DINO_IRQS 11            /* bits 0-10 are architected */
+#define DINO_IRR_MASK   0x5ff   /* only 10 bits are implemented */
+
+#define DINO_MASK_IRQ(x)        (1<<(x))
+
+#define PCIINTA   0x001
+#define PCIINTB   0x002
+#define PCIINTC   0x004
+#define PCIINTD   0x008
+#define PCIINTE   0x010
+#define PCIINTF   0x020
+#define GSCEXTINT 0x040
+/* #define xxx       0x080 - bit 7 is "default" */
+/* #define xxx    0x100 - bit 8 not used */
+/* #define xxx    0x200 - bit 9 not used */
+#define RS232INT  0x400
+
+struct dino_device
+{
+        struct pci_hba_data     hba;    /* 'C' inheritance - must be first */
+        spinlock_t              dinosaur_pen;
+        unsigned long           txn_addr; /* EIR addr to generate interrupt */ 
+        u32                     txn_data; /* EIR data assign to each dino */ 
+        u32                     imr;      /* IRQ's which are enabled */ 
+        int                     global_irq[12]; /* map IMR bit to global irq */
+#ifdef DINO_DEBUG
+        unsigned int            dino_irr0; /* save most recent IRQ line stat */
+#endif
+};
+
+/* Looks nice and keeps the compiler happy */
+#define DINO_DEV(d) ((struct dino_device *) d)
+
+
+/*
+ * Dino Configuration Space Accessor Functions
+ */
+
+#define DINO_CFG_TOK(bus,dfn,pos) ((u32) ((bus)<<16 | (dfn)<<8 | (pos)))
+
+/*
+ * keep the current highest bus count to assist in allocating busses.  This
+ * tries to keep a global bus count total so that when we discover an 
+ * entirely new bus, it can be given a unique bus number.
+ */
+static int dino_current_bus = 0;
+
+static int dino_cfg_read(struct pci_bus *bus, unsigned int devfn, int where,
+                int size, u32 *val)
+{
+        struct dino_device *d = DINO_DEV(parisc_walk_tree(bus->bridge));
+        u32 local_bus = (bus->parent == NULL) ? 0 : bus->secondary;
+        u32 v = DINO_CFG_TOK(local_bus, devfn, where & ~3);
+        void __iomem *base_addr = d->hba.base_addr;
+        unsigned long flags;
+
+        spin_lock_irqsave(&d->dinosaur_pen, flags);
+
+        /* tell HW which CFG address */
+        __raw_writel(v, base_addr + DINO_PCI_ADDR);
+
+        /* generate cfg read cycle */
+        if (size == 1) {
+                *val = readb(base_addr + DINO_CONFIG_DATA + (where & 3));
+        } else if (size == 2) {
+                *val = readw(base_addr + DINO_CONFIG_DATA + (where & 2));
+        } else if (size == 4) {
+                *val = readl(base_addr + DINO_CONFIG_DATA);
+        }
+
+        spin_unlock_irqrestore(&d->dinosaur_pen, flags);
+        return 0;
+}
+
+/*
+ * Dino address stepping "feature":
+ * When address stepping, Dino attempts to drive the bus one cycle too soon
+ * even though the type of cycle (config vs. MMIO) might be different. 
+ * The read of Ven/Prod ID is harmless and avoids Dino's address stepping.
+ */
+static int dino_cfg_write(struct pci_bus *bus, unsigned int devfn, int where,
+        int size, u32 val)
+{
+        struct dino_device *d = DINO_DEV(parisc_walk_tree(bus->bridge));
+        u32 local_bus = (bus->parent == NULL) ? 0 : bus->secondary;
+        u32 v = DINO_CFG_TOK(local_bus, devfn, where & ~3);
+        void __iomem *base_addr = d->hba.base_addr;
+        unsigned long flags;
+
+        spin_lock_irqsave(&d->dinosaur_pen, flags);
+
+        /* avoid address stepping feature */
+        __raw_writel(v & 0xffffff00, base_addr + DINO_PCI_ADDR);
+        __raw_readl(base_addr + DINO_CONFIG_DATA);
+
+        /* tell HW which CFG address */
+        __raw_writel(v, base_addr + DINO_PCI_ADDR);
+        /* generate cfg read cycle */
+        if (size == 1) {
+                writeb(val, base_addr + DINO_CONFIG_DATA + (where & 3));
+        } else if (size == 2) {
+                writew(val, base_addr + DINO_CONFIG_DATA + (where & 2));
+        } else if (size == 4) {
+                writel(val, base_addr + DINO_CONFIG_DATA);
+        }
+
+        spin_unlock_irqrestore(&d->dinosaur_pen, flags);
+        return 0;
+}
+
+static struct pci_ops dino_cfg_ops = {
+        .read =         dino_cfg_read,
+        .write =        dino_cfg_write,
+};
+
+
+/*
+ * Dino "I/O Port" Space Accessor Functions
+ *
+ * Many PCI devices don't require use of I/O port space (eg Tulip,
+ * NCR720) since they export the same registers to both MMIO and
+ * I/O port space.  Performance is going to stink if drivers use
+ * I/O port instead of MMIO.
+ */
+
+#define DINO_PORT_IN(type, size, mask) \
+static u##size dino_in##size (struct pci_hba_data *d, u16 addr) \
+{ \
+        u##size v; \
+        unsigned long flags; \
+        spin_lock_irqsave(&(DINO_DEV(d)->dinosaur_pen), flags); \
+        /* tell HW which IO Port address */ \
+        __raw_writel((u32) addr, d->base_addr + DINO_PCI_ADDR); \
+        /* generate I/O PORT read cycle */ \
+        v = read##type(d->base_addr+DINO_IO_DATA+(addr&mask)); \
+        spin_unlock_irqrestore(&(DINO_DEV(d)->dinosaur_pen), flags); \
+        return v; \
+}
+
+DINO_PORT_IN(b,  8, 3)
+DINO_PORT_IN(w, 16, 2)
+DINO_PORT_IN(l, 32, 0)
+
+#define DINO_PORT_OUT(type, size, mask) \
+static void dino_out##size (struct pci_hba_data *d, u16 addr, u##size val) \
+{ \
+        unsigned long flags; \
+        spin_lock_irqsave(&(DINO_DEV(d)->dinosaur_pen), flags); \
+        /* tell HW which IO port address */ \
+        __raw_writel((u32) addr, d->base_addr + DINO_PCI_ADDR); \
+        /* generate cfg write cycle */ \
+        write##type(val, d->base_addr+DINO_IO_DATA+(addr&mask)); \
+        spin_unlock_irqrestore(&(DINO_DEV(d)->dinosaur_pen), flags); \
+}
+
+DINO_PORT_OUT(b,  8, 3)
+DINO_PORT_OUT(w, 16, 2)
+DINO_PORT_OUT(l, 32, 0)
+
+struct pci_port_ops dino_port_ops = {
+        .inb    = dino_in8,
+        .inw    = dino_in16,
+        .inl    = dino_in32,
+        .outb   = dino_out8,
+        .outw   = dino_out16,
+        .outl   = dino_out32
+};
+
+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);
+
+        /* Clear the matching bit in the IMR register */
+        dino_dev->imr &= ~(DINO_MASK_IRQ(local_irq));
+        __raw_writel(dino_dev->imr, dino_dev->hba.base_addr+DINO_IMR);
+}
+
+static void dino_enable_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);
+        u32 tmp;
+
+        DBG(KERN_WARNING "%s(0x%p, %d)\n", __FUNCTION__, irq_dev, irq);
+
+        /*
+        ** clear pending IRQ bits
+        **
+        ** This does NOT change ILR state!
+        ** See comment below for ILR usage.
+        */
+        __raw_readl(dino_dev->hba.base_addr+DINO_IPR);
+
+        /* set the matching bit in the IMR register */
+        dino_dev->imr |= DINO_MASK_IRQ(local_irq);      /* used in dino_isr() */
+        __raw_writel( dino_dev->imr, dino_dev->hba.base_addr+DINO_IMR);
+
+        /* Emulate "Level Triggered" Interrupt
+        ** Basically, a driver is blowing it if the IRQ line is asserted
+        ** while the IRQ is disabled.  But tulip.c seems to do that....
+        ** Give 'em a kluge award and a nice round of applause!
+        **
+        ** The gsc_write will generate an interrupt which invokes dino_isr().
+        ** dino_isr() will read IPR and find nothing. But then catch this
+        ** when it also checks ILR.
+        */
+        tmp = __raw_readl(dino_dev->hba.base_addr+DINO_ILR);
+        if (tmp & DINO_MASK_IRQ(local_irq)) {
+                DBG(KERN_WARNING "%s(): IRQ asserted! (ILR 0x%x)\n",
+                                __FUNCTION__, tmp);
+                gsc_writel(dino_dev->txn_data, dino_dev->txn_addr);
+        }
+}
+
+static unsigned int dino_startup_irq(unsigned int irq)
+{
+        dino_enable_irq(irq);
+        return 0;
+}
+
+static struct hw_interrupt_type dino_interrupt_type = {
+        .typename       = "GSC-PCI",
+        .startup        = dino_startup_irq,
+        .shutdown       = dino_disable_irq,
+        .enable         = dino_enable_irq, 
+        .disable        = dino_disable_irq,
+        .ack            = no_ack_irq,
+        .end            = no_end_irq,
+};
+
+
+/*
+ * Handle a Processor interrupt generated by Dino.
+ *
+ * ilr_loop counter is a kluge to prevent a "stuck" IRQ line from
+ * wedging the CPU. Could be removed or made optional at some point.
+ */
+static irqreturn_t
+dino_isr(int irq, void *intr_dev, struct pt_regs *regs)
+{
+        struct dino_device *dino_dev = intr_dev;
+        u32 mask;
+        int ilr_loop = 100;
+
+        /* read and acknowledge pending interrupts */
+#ifdef DINO_DEBUG
+        dino_dev->dino_irr0 =
+#endif
+        mask = __raw_readl(dino_dev->hba.base_addr+DINO_IRR0) & DINO_IRR_MASK;
+
+        if (mask == 0)
+                return IRQ_NONE;
+
+ilr_again:
+        do {
+                int local_irq = __ffs(mask);
+                int irq = dino_dev->global_irq[local_irq];
+                DBG(KERN_DEBUG "%s(%d, %p) mask 0x%x\n",
+                        __FUNCTION__, irq, intr_dev, mask);
+                __do_IRQ(irq, regs);
+                mask &= ~(1 << local_irq);
+        } while (mask);
+
+        /* Support for level triggered IRQ lines.
+        ** 
+        ** Dropping this support would make this routine *much* faster.
+        ** But since PCI requires level triggered IRQ line to share lines...
+        ** device drivers may assume lines are level triggered (and not
+        ** edge triggered like EISA/ISA can be).
+        */
+        mask = __raw_readl(dino_dev->hba.base_addr+DINO_ILR) & dino_dev->imr;
+        if (mask) {
+                if (--ilr_loop > 0)
+                        goto ilr_again;
+                printk(KERN_ERR "Dino 0x%p: stuck interrupt %d\n", 
+                       dino_dev->hba.base_addr, mask);
+                return IRQ_NONE;
+        }
+        return IRQ_HANDLED;
+}
+
+static void dino_assign_irq(struct dino_device *dino, int local_irq, int *irqp)
+{
+        int irq = gsc_assign_irq(&dino_interrupt_type, dino);
+        if (irq == NO_IRQ)
+                return;
+
+        *irqp = irq;
+        dino->global_irq[local_irq] = irq;
+}
+
+static void dino_choose_irq(struct parisc_device *dev, void *ctrl)
+{
+        int irq;
+        struct dino_device *dino = ctrl;
+
+        switch (dev->id.sversion) {
+                case 0x00084:   irq =  8; break; /* PS/2 */
+                case 0x0008c:   irq = 10; break; /* RS232 */
+                case 0x00096:   irq =  8; break; /* PS/2 */
+                default:        return;          /* Unknown */
+        }
+
+        dino_assign_irq(dino, irq, &dev->irq);
+}
+
+static void __init
+dino_bios_init(void)
+{
+        DBG("dino_bios_init\n");
+}
+
+/*
+ * dino_card_setup - Set up the memory space for a Dino in card mode.
+ * @bus: the bus under this dino
+ *
+ * Claim an 8MB chunk of unused IO space and call the generic PCI routines
+ * to set up the addresses of the devices on this bus.
+ */
+#define _8MB 0x00800000UL
+static void __init
+dino_card_setup(struct pci_bus *bus, void __iomem *base_addr)
+{
+        int i;
+        struct dino_device *dino_dev = DINO_DEV(parisc_walk_tree(bus->bridge));
+        struct resource *res;
+        char name[128];
+        int size;
+
+        res = &dino_dev->hba.lmmio_space;
+        res->flags = IORESOURCE_MEM;
+        size = scnprintf(name, sizeof(name), "Dino LMMIO (%s)", 
+                         bus->bridge->bus_id);
+        res->name = kmalloc(size+1, GFP_KERNEL);
+        if(res->name)
+                strcpy((char *)res->name, name);
+        else
+                res->name = dino_dev->hba.lmmio_space.name;
+        
+
+        if (ccio_allocate_resource(dino_dev->hba.dev, res, _8MB,
+                                F_EXTEND(0xf0000000UL) | _8MB,
+                                F_EXTEND(0xffffffffUL) &~ _8MB, _8MB) < 0) {
+                struct list_head *ln, *tmp_ln;
+
+                printk(KERN_ERR "Dino: cannot attach bus %s\n",
+                       bus->bridge->bus_id);
+                /* kill the bus, we can't do anything with it */
+                list_for_each_safe(ln, tmp_ln, &bus->devices) {
+                        struct pci_dev *dev = pci_dev_b(ln);
+
+                        list_del(&dev->global_list);
+                        list_del(&dev->bus_list);
+                }
+                        
+                return;
+        }
+        bus->resource[1] = res;
+        bus->resource[0] = &(dino_dev->hba.io_space);
+
+        /* Now tell dino what range it has */
+        for (i = 1; i < 31; i++) {
+                if (res->start == F_EXTEND(0xf0000000UL | (i * _8MB)))
+                        break;
+        }
+        DBG("DINO GSC WRITE i=%d, start=%lx, dino addr = %lx\n",
+            i, res->start, base_addr + DINO_IO_ADDR_EN);
+        __raw_writel(1 << i, base_addr + DINO_IO_ADDR_EN);
+}
+
+static void __init
+dino_card_fixup(struct pci_dev *dev)
+{
+        u32 irq_pin;
+
+        /*
+        ** REVISIT: card-mode PCI-PCI expansion chassis do exist.
+        **         Not sure they were ever productized.
+        **         Die here since we'll die later in dino_inb() anyway.
+        */
+        if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
+                panic("Card-Mode Dino: PCI-PCI Bridge not supported\n");
+        }
+
+        /*
+        ** Set Latency Timer to 0xff (not a shared bus)
+        ** Set CACHELINE_SIZE.
+        */
+        dino_cfg_write(dev->bus, dev->devfn, 
+                       PCI_CACHE_LINE_SIZE, 2, 0xff00 | L1_CACHE_BYTES/4); 
+
+        /*
+        ** Program INT_LINE for card-mode devices.
+        ** The cards are hardwired according to this algorithm.
+        ** And it doesn't matter if PPB's are present or not since
+        ** the IRQ lines bypass the PPB.
+        **
+        ** "-1" converts INTA-D (1-4) to PCIINTA-D (0-3) range.
+        ** The additional "-1" adjusts for skewing the IRQ<->slot.
+        */
+        dino_cfg_read(dev->bus, dev->devfn, PCI_INTERRUPT_PIN, 1, &irq_pin); 
+        dev->irq = (irq_pin + PCI_SLOT(dev->devfn) - 1) % 4 ;
+
+        /* Shouldn't really need to do this but it's in case someone tries
+        ** to bypass PCI services and look at the card themselves.
+        */
+        dino_cfg_write(dev->bus, dev->devfn, PCI_INTERRUPT_LINE, 1, dev->irq); 
+}
+
+/* The alignment contraints for PCI bridges under dino */
+#define DINO_BRIDGE_ALIGN 0x100000
+
+
+static void __init
+dino_fixup_bus(struct pci_bus *bus)
+{
+        struct list_head *ln;
+        struct pci_dev *dev;
+        struct dino_device *dino_dev = DINO_DEV(parisc_walk_tree(bus->bridge));
+        int port_base = HBA_PORT_BASE(dino_dev->hba.hba_num);
+
+        DBG(KERN_WARNING "%s(0x%p) bus %d platform_data 0x%p\n",
+            __FUNCTION__, bus, bus->secondary, 
+            bus->bridge->platform_data);
+
+        /* Firmware doesn't set up card-mode dino, so we have to */
+        if (is_card_dino(&dino_dev->hba.dev->id)) {
+                dino_card_setup(bus, dino_dev->hba.base_addr);
+        } else if(bus->parent == NULL) {
+                /* must have a dino above it, reparent the resources
+                 * into the dino window */
+                int i;
+                struct resource *res = &dino_dev->hba.lmmio_space;
+
+                bus->resource[0] = &(dino_dev->hba.io_space);
+                for(i = 0; i < DINO_MAX_LMMIO_RESOURCES; i++) {
+                        if(res[i].flags == 0)
+                                break;
+                        bus->resource[i+1] = &res[i];
+                }
+
+        } else if(bus->self) {
+                int i;
+
+                pci_read_bridge_bases(bus);
+
+
+                for(i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) {
+                        if((bus->self->resource[i].flags & 
+                            (IORESOURCE_IO | IORESOURCE_MEM)) == 0)
+                                continue;
+                        
+                        if(bus->self->resource[i].flags & IORESOURCE_MEM) {
+                                /* There's a quirk to alignment of
+                                 * bridge memory resources: the start
+                                 * is the alignment and start-end is
+                                 * the size.  However, firmware will
+                                 * have assigned start and end, so we
+                                 * need to take this into account */
+                                bus->self->resource[i].end = bus->self->resource[i].end - bus->self->resource[i].start + DINO_BRIDGE_ALIGN;
+                                bus->self->resource[i].start = DINO_BRIDGE_ALIGN;
+                                
+                        }
+                                        
+                        DBG("DEBUG %s assigning %d [0x%lx,0x%lx]\n",
+                            bus->self->dev.bus_id, i,
+                            bus->self->resource[i].start,
+                            bus->self->resource[i].end);
+                        pci_assign_resource(bus->self, i);
+                        DBG("DEBUG %s after assign %d [0x%lx,0x%lx]\n",
+                            bus->self->dev.bus_id, i,
+                            bus->self->resource[i].start,
+                            bus->self->resource[i].end);
+                }
+        }
+
+
+        list_for_each(ln, &bus->devices) {
+                int i;
+
+                dev = pci_dev_b(ln);
+                if (is_card_dino(&dino_dev->hba.dev->id))
+                        dino_card_fixup(dev);
+
+                /*
+                ** P2PB's only have 2 BARs, no IRQs.
+                ** I'd like to just ignore them for now.
+                */
+                if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI)
+                        continue;
+
+                /* Adjust the I/O Port space addresses */
+                for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+                        struct resource *res = &dev->resource[i];
+                        if (res->flags & IORESOURCE_IO) {
+                                res->start |= port_base;
+                                res->end |= port_base;
+                        }
+#ifdef __LP64__
+                        /* Sign Extend MMIO addresses */
+                        else if (res->flags & IORESOURCE_MEM) {
+                                res->start |= F_EXTEND(0UL);
+                                res->end   |= F_EXTEND(0UL);
+                        }
+#endif
+                }
+                /* null out the ROM resource if there is one (we don't
+                 * care about an expansion rom on parisc, since it
+                 * usually contains (x86) bios code) */
+                dev->resource[PCI_ROM_RESOURCE].flags = 0;
+                                
+                if(dev->irq == 255) {
+
+#define DINO_FIX_UNASSIGNED_INTERRUPTS
+#ifdef DINO_FIX_UNASSIGNED_INTERRUPTS
+
+                        /* This code tries to assign an unassigned
+                         * interrupt.  Leave it disabled unless you
+                         * *really* know what you're doing since the
+                         * pin<->interrupt line mapping varies by bus
+                         * and machine */
+
+                        u32 irq_pin;
+                        
+                        dino_cfg_read(dev->bus, dev->devfn, 
+                                      PCI_INTERRUPT_PIN, 1, &irq_pin);
+                        irq_pin = (irq_pin + PCI_SLOT(dev->devfn) - 1) % 4 ;
+                        printk(KERN_WARNING "Device %s has undefined IRQ, "
+                                        "setting to %d\n", pci_name(dev), irq_pin);
+                        dino_cfg_write(dev->bus, dev->devfn, 
+                                       PCI_INTERRUPT_LINE, 1, irq_pin);
+                        dino_assign_irq(dino_dev, irq_pin, &dev->irq);
+#else
+                        dev->irq = 65535;
+                        printk(KERN_WARNING "Device %s has unassigned IRQ\n", pci_name(dev));
+#endif
+                } else {
+
+                        /* Adjust INT_LINE for that busses region */
+                        dino_assign_irq(dino_dev, dev->irq, &dev->irq);
+                }
+        }
+}
+
+
+struct pci_bios_ops dino_bios_ops = {
+        .init           = dino_bios_init,
+        .fixup_bus      = dino_fixup_bus
+};
+
+
+/*
+ *      Initialise a DINO controller chip
+ */
+static void __init
+dino_card_init(struct dino_device *dino_dev)
+{
+        u32 brdg_feat = 0x00784e05;
+
+        __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_GMASK);
+        __raw_writel(0x00000001, dino_dev->hba.base_addr+DINO_IO_FBB_EN);
+        __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_ICR);
+
+#if 1
+/* REVISIT - should be a runtime check (eg if (CPU_IS_PCX_L) ...) */
+        /*
+        ** PCX-L processors don't support XQL like Dino wants it.
+        ** PCX-L2 ignore XQL signal and it doesn't matter.
+        */
+        brdg_feat &= ~0x4;      /* UXQL */
+#endif
+        __raw_writel( brdg_feat, dino_dev->hba.base_addr+DINO_BRDG_FEAT);
+
+        /*
+        ** Don't enable address decoding until we know which I/O range
+        ** currently is available from the host. Only affects MMIO
+        ** and not I/O port space.
+        */
+        __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_IO_ADDR_EN);
+
+        __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_DAMODE);
+        __raw_writel(0x00222222, dino_dev->hba.base_addr+DINO_PCIROR);
+        __raw_writel(0x00222222, dino_dev->hba.base_addr+DINO_PCIWOR);
+
+        __raw_writel(0x00000040, dino_dev->hba.base_addr+DINO_MLTIM);
+        __raw_writel(0x00000080, dino_dev->hba.base_addr+DINO_IO_CONTROL);
+        __raw_writel(0x0000008c, dino_dev->hba.base_addr+DINO_TLTIM);
+
+        /* Disable PAMR before writing PAPR */
+        __raw_writel(0x0000007e, dino_dev->hba.base_addr+DINO_PAMR);
+        __raw_writel(0x0000007f, dino_dev->hba.base_addr+DINO_PAPR);
+        __raw_writel(0x00000000, dino_dev->hba.base_addr+DINO_PAMR);
+
+        /*
+        ** Dino ERS encourages enabling FBB (0x6f).
+        ** We can't until we know *all* devices below us can support it.
+        ** (Something in device configuration header tells us).
+        */
+        __raw_writel(0x0000004f, dino_dev->hba.base_addr+DINO_PCICMD);
+
+        /* Somewhere, the PCI spec says give devices 1 second
+        ** to recover from the #RESET being de-asserted.
+        ** Experience shows most devices only need 10ms.
+        ** This short-cut speeds up booting significantly.
+        */
+        mdelay(pci_post_reset_delay);
+}
+
+static int __init
+dino_bridge_init(struct dino_device *dino_dev, const char *name)
+{
+        unsigned long io_addr;
+        int result, i, count=0;
+        struct resource *res, *prevres = NULL;
+        /*
+         * Decoding IO_ADDR_EN only works for Built-in Dino
+         * since PDC has already initialized this.
+         */
+
+        io_addr = __raw_readl(dino_dev->hba.base_addr + DINO_IO_ADDR_EN);
+        if (io_addr == 0) {
+                printk(KERN_WARNING "%s: No PCI devices enabled.\n", name);
+                return -ENODEV;
+        }
+
+        res = &dino_dev->hba.lmmio_space;
+        for (i = 0; i < 32; i++) {
+                unsigned long start, end;
+
+                if((io_addr & (1 << i)) == 0)
+                        continue;
+
+                start = (unsigned long)(signed int)(0xf0000000 | (i << 23));
+                end = start + 8 * 1024 * 1024 - 1;
+
+                DBG("DINO RANGE %d is at 0x%lx-0x%lx\n", count,
+                    start, end);
+
+                if(prevres && prevres->end + 1 == start) {
+                        prevres->end = end;
+                } else {
+                        if(count >= DINO_MAX_LMMIO_RESOURCES) {
+                                printk(KERN_ERR "%s is out of resource windows for range %d (0x%lx-0x%lx)\n", name, count, start, end);
+                                break;
+                        }
+                        prevres = res;
+                        res->start = start;
+                        res->end = end;
+                        res->flags = IORESOURCE_MEM;
+                        res->name = kmalloc(64, GFP_KERNEL);
+                        if(res->name)
+                                snprintf((char *)res->name, 64, "%s LMMIO %d",
+                                         name, count);
+                        res++;
+                        count++;
+                }
+        }
+
+        res = &dino_dev->hba.lmmio_space;
+
+        for(i = 0; i < DINO_MAX_LMMIO_RESOURCES; i++) {
+                if(res[i].flags == 0)
+                        break;
+
+                result = ccio_request_resource(dino_dev->hba.dev, &res[i]);
+                if (result < 0) {
+                        printk(KERN_ERR "%s: failed to claim PCI Bus address space %d (0x%lx-0x%lx)!\n", name, i, res[i].start, res[i].end);
+                        return result;
+                }
+        }
+        return 0;
+}
+
+static int __init dino_common_init(struct parisc_device *dev,
+                struct dino_device *dino_dev, const char *name)
+{
+        int status;
+        u32 eim;
+        struct gsc_irq gsc_irq;
+        struct resource *res;
+
+        pcibios_register_hba(&dino_dev->hba);
+
+        pci_bios = &dino_bios_ops;   /* used by pci_scan_bus() */
+        pci_port = &dino_port_ops;
+
+        /*
+        ** Note: SMP systems can make use of IRR1/IAR1 registers
+        **   But it won't buy much performance except in very
+        **   specific applications/configurations. Note Dino
+        **   still only has 11 IRQ input lines - just map some of them
+        **   to a different processor.
+        */
+        dev->irq = gsc_alloc_irq(&gsc_irq);
+        dino_dev->txn_addr = gsc_irq.txn_addr;
+        dino_dev->txn_data = gsc_irq.txn_data;
+        eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
+
+        /* 
+        ** Dino needs a PA "IRQ" to get a processor's attention.
+        ** arch/parisc/kernel/irq.c returns an EIRR bit.
+        */
+        if (dev->irq < 0) {
+                printk(KERN_WARNING "%s: gsc_alloc_irq() failed\n", name);
+                return 1;
+        }
+
+        status = request_irq(dev->irq, dino_isr, 0, name, dino_dev);
+        if (status) {
+                printk(KERN_WARNING "%s: request_irq() failed with %d\n", 
+                        name, status);
+                return 1;
+        }
+
+        /* Support the serial port which is sometimes attached on built-in
+         * Dino / Cujo chips.
+         */
+
+        gsc_fixup_irqs(dev, dino_dev, dino_choose_irq);
+
+        /*
+        ** This enables DINO to generate interrupts when it sees
+        ** any of its inputs *change*. Just asserting an IRQ
+        ** before it's enabled (ie unmasked) isn't good enough.
+        */
+        __raw_writel(eim, dino_dev->hba.base_addr+DINO_IAR0);
+
+        /*
+        ** Some platforms don't clear Dino's IRR0 register at boot time.
+        ** Reading will clear it now.
+        */
+        __raw_readl(dino_dev->hba.base_addr+DINO_IRR0);
+
+        /* allocate I/O Port resource region */
+        res = &dino_dev->hba.io_space;
+        if (dev->id.hversion == 0x680 || is_card_dino(&dev->id)) {
+                res->name = "Dino I/O Port";
+        } else {
+                res->name = "Cujo I/O Port";
+        }
+        res->start = HBA_PORT_BASE(dino_dev->hba.hba_num);
+        res->end = res->start + (HBA_PORT_SPACE_SIZE - 1);
+        res->flags = IORESOURCE_IO; /* do not mark it busy ! */
+        if (request_resource(&ioport_resource, res) < 0) {
+                printk(KERN_ERR "%s: request I/O Port region failed "
+                       "0x%lx/%lx (hpa 0x%p)\n",
+                       name, res->start, res->end, dino_dev->hba.base_addr);
+                return 1;
+        }
+
+        return 0;
+}
+
+#define CUJO_RAVEN_ADDR         F_EXTEND(0xf1000000UL)
+#define CUJO_FIREHAWK_ADDR      F_EXTEND(0xf1604000UL)
+#define CUJO_RAVEN_BADPAGE      0x01003000UL
+#define CUJO_FIREHAWK_BADPAGE   0x01607000UL
+
+static const char *dino_vers[] = {
+        "2.0",
+        "2.1",
+        "3.0",
+        "3.1"
+};
+
+static const char *cujo_vers[] = {
+        "1.0",
+        "2.0"
+};
+
+void ccio_cujo20_fixup(struct parisc_device *dev, u32 iovp);
+
+/*
+** Determine if dino should claim this chip (return 0) or not (return 1).
+** If so, initialize the chip appropriately (card-mode vs bridge mode).
+** Much of the initialization is common though.
+*/
+static int __init
+dino_driver_callback(struct parisc_device *dev)
+{
+        struct dino_device *dino_dev;   // Dino specific control struct
+        const char *version = "unknown";
+        char *name;
+        int is_cujo = 0;
+        struct pci_bus *bus;
+        
+        name = "Dino";
+        if (is_card_dino(&dev->id)) {
+                version = "3.x (card mode)";
+        } else {
+                if(dev->id.hversion == 0x680) {
+                        if (dev->id.hversion_rev < 4) {
+                                version = dino_vers[dev->id.hversion_rev];
+                        }
+                } else {
+                        name = "Cujo";
+                        is_cujo = 1;
+                        if (dev->id.hversion_rev < 2) {
+                                version = cujo_vers[dev->id.hversion_rev];
+                        }
+                }
+        }
+
+        printk("%s version %s found at 0x%lx\n", name, version, dev->hpa);
+
+        if (!request_mem_region(dev->hpa, PAGE_SIZE, name)) {
+                printk(KERN_ERR "DINO: Hey! Someone took my MMIO space (0x%ld)!\n",
+                        dev->hpa);
+                return 1;
+        }
+
+        /* Check for bugs */
+        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) {
+                        ccio_cujo20_fixup(dev, CUJO_RAVEN_BADPAGE);
+                } else if (dev->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);
+                }
+#endif
+        } else if (!is_cujo && !is_card_dino(&dev->id) &&
+                        dev->id.hversion_rev < 3) {
+                printk(KERN_WARNING
+"The GSCtoPCI (Dino hrev %d) bus converter found may exhibit\n"
+"data corruption.  See Service Note Numbers: A4190A-01, A4191A-01.\n"
+"Systems shipped after Aug 20, 1997 will not exhibit this problem.\n"
+"Models affected: C180, C160, C160L, B160L, and B132L workstations.\n\n",
+                        dev->id.hversion_rev);
+/* REVISIT: why are C200/C240 listed in the README table but not
+**   "Models affected"? Could be an omission in the original literature.
+*/
+        }
+
+        dino_dev = kmalloc(sizeof(struct dino_device), GFP_KERNEL);
+        if (!dino_dev) {
+                printk("dino_init_chip - couldn't alloc dino_device\n");
+                return 1;
+        }
+
+        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.lmmio_space_offset = 0;   /* CPU addrs == bus addrs */
+        spin_lock_init(&dino_dev->dinosaur_pen);
+        dino_dev->hba.iommu = ccio_get_iommu(dev);
+
+        if (is_card_dino(&dev->id)) {
+                dino_card_init(dino_dev);
+        } else {
+                dino_bridge_init(dino_dev, name);
+        }
+
+        if (dino_common_init(dev, dino_dev, name))
+                return 1;
+
+        dev->dev.platform_data = dino_dev;
+
+        /*
+        ** It's not used to avoid chicken/egg problems
+        ** with configuration accessor functions.
+        */
+        bus = pci_scan_bus_parented(&dev->dev, dino_current_bus,
+                                    &dino_cfg_ops, NULL);
+        if(bus) {
+                /* This code *depends* on scanning being single threaded
+                 * if it isn't, this global bus number count will fail
+                 */
+                dino_current_bus = bus->subordinate + 1;
+                pci_bus_assign_resources(bus);
+        } else {
+                printk(KERN_ERR "ERROR: failed to scan PCI bus on %s (probably duplicate bus number %d)\n", dev->dev.bus_id, dino_current_bus);
+                /* increment the bus number in case of duplicates */
+                dino_current_bus++;
+        }
+        dino_dev->hba.hba_bus = bus;
+        return 0;
+}
+
+/*
+ * Normally, we would just test sversion.  But the Elroy PCI adapter has
+ * the same sversion as Dino, so we have to check hversion as well.
+ * Unfortunately, the J2240 PDC reports the wrong hversion for the first
+ * Dino, so we have to test for Dino, Cujo and Dino-in-a-J2240.
+ * For card-mode Dino, most machines report an sversion of 9D.  But 715
+ * and 725 firmware misreport it as 0x08080 for no adequately explained
+ * reason.
+ */
+static struct parisc_device_id dino_tbl[] = {
+        { HPHW_A_DMA, HVERSION_REV_ANY_ID, 0x004, 0x0009D },/* Card-mode Dino */
+        { HPHW_A_DMA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x08080 }, /* XXX */
+        { HPHW_BRIDGE, HVERSION_REV_ANY_ID, 0x680, 0xa }, /* Bridge-mode Dino */
+        { HPHW_BRIDGE, HVERSION_REV_ANY_ID, 0x682, 0xa }, /* Bridge-mode Cujo */
+        { HPHW_BRIDGE, HVERSION_REV_ANY_ID, 0x05d, 0xa }, /* Dino in a J2240 */
+        { 0, }
+};
+
+static struct parisc_driver dino_driver = {
+        .name =         "Dino",
+        .id_table =     dino_tbl,
+        .probe =        dino_driver_callback,
+};
+
+/*
+ * One time initialization to let the world know Dino is here.
+ * This is the only routine which is NOT static.
+ * Must be called exactly once before pci_init().
+ */
+int __init dino_init(void)
+{
+        register_parisc_driver(&dino_driver);
+        return 0;
+}
+