/* pci_schizo.c: SCHIZO/TOMATILLO specific PCI controller support.

   *

   * Copyright (C) 2001, 2002, 2003, 2007, 2008 David S. Miller (davem@davemloft.net)

   */
  
  #include <linux/kernel.h>
  #include <linux/types.h>
  #include <linux/pci.h>
  #include <linux/init.h>
  #include <linux/slab.h>

  #include <linux/export.h>

  #include <linux/interrupt.h>

  #include <linux/of_device.h>

  #include <asm/iommu.h>
  #include <asm/irq.h>

  #include <asm/pstate.h>

  #include <asm/prom.h>

  #include <asm/upa.h>

  
  #include "pci_impl.h"
  #include "iommu_common.h"

  #define DRIVER_NAME	"schizo"
  #define PFX		DRIVER_NAME ": "

  /* This is a convention that at least Excalibur and Merlin
   * follow.  I suppose the SCHIZO used in Starcat and friends
   * will do similar.
   *
   * The only way I could see this changing is if the newlink
   * block requires more space in Schizo's address space than
   * they predicted, thus requiring an address space reorg when
   * the newer Schizo is taped out.
   */
  
  /* Streaming buffer control register. */
  #define SCHIZO_STRBUF_CTRL_LPTR    0x00000000000000f0UL /* LRU Lock Pointer */
  #define SCHIZO_STRBUF_CTRL_LENAB   0x0000000000000008UL /* LRU Lock Enable */
  #define SCHIZO_STRBUF_CTRL_RRDIS   0x0000000000000004UL /* Rerun Disable */
  #define SCHIZO_STRBUF_CTRL_DENAB   0x0000000000000002UL /* Diagnostic Mode Enable */
  #define SCHIZO_STRBUF_CTRL_ENAB    0x0000000000000001UL /* Streaming Buffer Enable */
  
  /* IOMMU control register. */
  #define SCHIZO_IOMMU_CTRL_RESV     0xfffffffff9000000UL /* Reserved                      */
  #define SCHIZO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL /* Translation Error Status      */
  #define SCHIZO_IOMMU_CTRL_XLTEERR  0x0000000001000000UL /* Translation Error encountered */
  #define SCHIZO_IOMMU_CTRL_LCKEN    0x0000000000800000UL /* Enable translation locking    */
  #define SCHIZO_IOMMU_CTRL_LCKPTR   0x0000000000780000UL /* Translation lock pointer      */
  #define SCHIZO_IOMMU_CTRL_TSBSZ    0x0000000000070000UL /* TSB Size                      */
  #define SCHIZO_IOMMU_TSBSZ_1K      0x0000000000000000UL /* TSB Table 1024 8-byte entries */
  #define SCHIZO_IOMMU_TSBSZ_2K      0x0000000000010000UL /* TSB Table 2048 8-byte entries */
  #define SCHIZO_IOMMU_TSBSZ_4K      0x0000000000020000UL /* TSB Table 4096 8-byte entries */
  #define SCHIZO_IOMMU_TSBSZ_8K      0x0000000000030000UL /* TSB Table 8192 8-byte entries */
  #define SCHIZO_IOMMU_TSBSZ_16K     0x0000000000040000UL /* TSB Table 16k 8-byte entries  */
  #define SCHIZO_IOMMU_TSBSZ_32K     0x0000000000050000UL /* TSB Table 32k 8-byte entries  */
  #define SCHIZO_IOMMU_TSBSZ_64K     0x0000000000060000UL /* TSB Table 64k 8-byte entries  */
  #define SCHIZO_IOMMU_TSBSZ_128K    0x0000000000070000UL /* TSB Table 128k 8-byte entries */
  #define SCHIZO_IOMMU_CTRL_RESV2    0x000000000000fff8UL /* Reserved                      */
  #define SCHIZO_IOMMU_CTRL_TBWSZ    0x0000000000000004UL /* Assumed page size, 0=8k 1=64k */
  #define SCHIZO_IOMMU_CTRL_DENAB    0x0000000000000002UL /* Diagnostic mode enable        */
  #define SCHIZO_IOMMU_CTRL_ENAB     0x0000000000000001UL /* IOMMU Enable                  */
  
  /* Schizo config space address format is nearly identical to
   * that of PSYCHO:
   *
   *  32             24 23 16 15    11 10       8 7   2  1 0
   * ---------------------------------------------------------
   * |0 0 0 0 0 0 0 0 0| bus | device | function | reg | 0 0 |
   * ---------------------------------------------------------
   */
  #define SCHIZO_CONFIG_BASE(PBM)	((PBM)->config_space)
  #define SCHIZO_CONFIG_ENCODE(BUS, DEVFN, REG)	\
  	(((unsigned long)(BUS)   << 16) |	\
  	 ((unsigned long)(DEVFN) << 8)  |	\
  	 ((unsigned long)(REG)))
  
  static void *schizo_pci_config_mkaddr(struct pci_pbm_info *pbm,
  				      unsigned char bus,
  				      unsigned int devfn,
  				      int where)
  {
  	if (!pbm)
  		return NULL;
  	bus -= pbm->pci_first_busno;
  	return (void *)
  		(SCHIZO_CONFIG_BASE(pbm) |
  		 SCHIZO_CONFIG_ENCODE(bus, devfn, where));
  }

  /* SCHIZO error handling support. */
  enum schizo_error_type {
  	UE_ERR, CE_ERR, PCI_ERR, SAFARI_ERR
  };
  
  static DEFINE_SPINLOCK(stc_buf_lock);
  static unsigned long stc_error_buf[128];
  static unsigned long stc_tag_buf[16];
  static unsigned long stc_line_buf[16];
  
  #define SCHIZO_UE_INO		0x30 /* Uncorrectable ECC error */
  #define SCHIZO_CE_INO		0x31 /* Correctable ECC error */
  #define SCHIZO_PCIERR_A_INO	0x32 /* PBM A PCI bus error */
  #define SCHIZO_PCIERR_B_INO	0x33 /* PBM B PCI bus error */
  #define SCHIZO_SERR_INO		0x34 /* Safari interface error */

  #define SCHIZO_STC_ERR	0xb800UL /* --> 0xba00 */
  #define SCHIZO_STC_TAG	0xba00UL /* --> 0xba80 */
  #define SCHIZO_STC_LINE	0xbb00UL /* --> 0xbb80 */
  
  #define SCHIZO_STCERR_WRITE	0x2UL
  #define SCHIZO_STCERR_READ	0x1UL
  
  #define SCHIZO_STCTAG_PPN	0x3fffffff00000000UL
  #define SCHIZO_STCTAG_VPN	0x00000000ffffe000UL
  #define SCHIZO_STCTAG_VALID	0x8000000000000000UL
  #define SCHIZO_STCTAG_READ	0x4000000000000000UL
  
  #define SCHIZO_STCLINE_LINDX	0x0000000007800000UL
  #define SCHIZO_STCLINE_SPTR	0x000000000007e000UL
  #define SCHIZO_STCLINE_LADDR	0x0000000000001fc0UL
  #define SCHIZO_STCLINE_EPTR	0x000000000000003fUL
  #define SCHIZO_STCLINE_VALID	0x0000000000600000UL
  #define SCHIZO_STCLINE_FOFN	0x0000000000180000UL
  
  static void __schizo_check_stc_error_pbm(struct pci_pbm_info *pbm,
  					 enum schizo_error_type type)
  {

  	struct strbuf *strbuf = &pbm->stc;

  	unsigned long regbase = pbm->pbm_regs;
  	unsigned long err_base, tag_base, line_base;
  	u64 control;
  	int i;
  
  	err_base = regbase + SCHIZO_STC_ERR;
  	tag_base = regbase + SCHIZO_STC_TAG;
  	line_base = regbase + SCHIZO_STC_LINE;
  
  	spin_lock(&stc_buf_lock);
  
  	/* This is __REALLY__ dangerous.  When we put the
  	 * streaming buffer into diagnostic mode to probe
  	 * it's tags and error status, we _must_ clear all
  	 * of the line tag valid bits before re-enabling
  	 * the streaming buffer.  If any dirty data lives
  	 * in the STC when we do this, we will end up
  	 * invalidating it before it has a chance to reach
  	 * main memory.
  	 */

  	control = upa_readq(strbuf->strbuf_control);
  	upa_writeq((control | SCHIZO_STRBUF_CTRL_DENAB),
  		   strbuf->strbuf_control);

  	for (i = 0; i < 128; i++) {
  		unsigned long val;

  		val = upa_readq(err_base + (i * 8UL));
  		upa_writeq(0UL, err_base + (i * 8UL));

  		stc_error_buf[i] = val;
  	}
  	for (i = 0; i < 16; i++) {

  		stc_tag_buf[i] = upa_readq(tag_base + (i * 8UL));
  		stc_line_buf[i] = upa_readq(line_base + (i * 8UL));
  		upa_writeq(0UL, tag_base + (i * 8UL));
  		upa_writeq(0UL, line_base + (i * 8UL));

  	}
  
  	/* OK, state is logged, exit diagnostic mode. */

  	upa_writeq(control, strbuf->strbuf_control);

  
  	for (i = 0; i < 16; i++) {
  		int j, saw_error, first, last;
  
  		saw_error = 0;
  		first = i * 8;
  		last = first + 8;
  		for (j = first; j < last; j++) {
  			unsigned long errval = stc_error_buf[j];
  			if (errval != 0) {
  				saw_error++;
  				printk("%s: STC_ERR(%d)[wr(%d)rd(%d)]
  ",
  				       pbm->name,
  				       j,
  				       (errval & SCHIZO_STCERR_WRITE) ? 1 : 0,
  				       (errval & SCHIZO_STCERR_READ) ? 1 : 0);
  			}
  		}
  		if (saw_error != 0) {
  			unsigned long tagval = stc_tag_buf[i];
  			unsigned long lineval = stc_line_buf[i];
  			printk("%s: STC_TAG(%d)[PA(%016lx)VA(%08lx)V(%d)R(%d)]
  ",
  			       pbm->name,
  			       i,
  			       ((tagval & SCHIZO_STCTAG_PPN) >> 19UL),
  			       (tagval & SCHIZO_STCTAG_VPN),
  			       ((tagval & SCHIZO_STCTAG_VALID) ? 1 : 0),
  			       ((tagval & SCHIZO_STCTAG_READ) ? 1 : 0));
  
  			/* XXX Should spit out per-bank error information... -DaveM */
  			printk("%s: STC_LINE(%d)[LIDX(%lx)SP(%lx)LADDR(%lx)EP(%lx)"
  			       "V(%d)FOFN(%d)]
  ",
  			       pbm->name,
  			       i,
  			       ((lineval & SCHIZO_STCLINE_LINDX) >> 23UL),
  			       ((lineval & SCHIZO_STCLINE_SPTR) >> 13UL),
  			       ((lineval & SCHIZO_STCLINE_LADDR) >> 6UL),
  			       ((lineval & SCHIZO_STCLINE_EPTR) >> 0UL),
  			       ((lineval & SCHIZO_STCLINE_VALID) ? 1 : 0),
  			       ((lineval & SCHIZO_STCLINE_FOFN) ? 1 : 0));
  		}
  	}
  
  	spin_unlock(&stc_buf_lock);
  }
  
  /* IOMMU is per-PBM in Schizo, so interrogate both for anonymous
   * controller level errors.
   */
  
  #define SCHIZO_IOMMU_TAG	0xa580UL
  #define SCHIZO_IOMMU_DATA	0xa600UL
  
  #define SCHIZO_IOMMU_TAG_CTXT	0x0000001ffe000000UL
  #define SCHIZO_IOMMU_TAG_ERRSTS	0x0000000001800000UL
  #define SCHIZO_IOMMU_TAG_ERR	0x0000000000400000UL
  #define SCHIZO_IOMMU_TAG_WRITE	0x0000000000200000UL
  #define SCHIZO_IOMMU_TAG_STREAM	0x0000000000100000UL
  #define SCHIZO_IOMMU_TAG_SIZE	0x0000000000080000UL
  #define SCHIZO_IOMMU_TAG_VPAGE	0x000000000007ffffUL
  
  #define SCHIZO_IOMMU_DATA_VALID	0x0000000100000000UL
  #define SCHIZO_IOMMU_DATA_CACHE	0x0000000040000000UL
  #define SCHIZO_IOMMU_DATA_PPAGE	0x000000003fffffffUL
  
  static void schizo_check_iommu_error_pbm(struct pci_pbm_info *pbm,
  					 enum schizo_error_type type)
  {

  	struct iommu *iommu = pbm->iommu;

  	unsigned long iommu_tag[16];
  	unsigned long iommu_data[16];
  	unsigned long flags;
  	u64 control;
  	int i;
  
  	spin_lock_irqsave(&iommu->lock, flags);

  	control = upa_readq(iommu->iommu_control);

  	if (control & SCHIZO_IOMMU_CTRL_XLTEERR) {
  		unsigned long base;
  		char *type_string;
  
  		/* Clear the error encountered bit. */
  		control &= ~SCHIZO_IOMMU_CTRL_XLTEERR;

  		upa_writeq(control, iommu->iommu_control);

  
  		switch((control & SCHIZO_IOMMU_CTRL_XLTESTAT) >> 25UL) {
  		case 0:
  			type_string = "Protection Error";
  			break;
  		case 1:
  			type_string = "Invalid Error";
  			break;
  		case 2:
  			type_string = "TimeOut Error";
  			break;
  		case 3:
  		default:
  			type_string = "ECC Error";
  			break;

  		}

  		printk("%s: IOMMU Error, type[%s]
  ",
  		       pbm->name, type_string);
  
  		/* Put the IOMMU into diagnostic mode and probe
  		 * it's TLB for entries with error status.
  		 *
  		 * It is very possible for another DVMA to occur
  		 * while we do this probe, and corrupt the system
  		 * further.  But we are so screwed at this point
  		 * that we are likely to crash hard anyways, so
  		 * get as much diagnostic information to the
  		 * console as we can.
  		 */

  		upa_writeq(control | SCHIZO_IOMMU_CTRL_DENAB,
  			   iommu->iommu_control);

  
  		base = pbm->pbm_regs;
  
  		for (i = 0; i < 16; i++) {
  			iommu_tag[i] =

  				upa_readq(base + SCHIZO_IOMMU_TAG + (i * 8UL));

  			iommu_data[i] =

  				upa_readq(base + SCHIZO_IOMMU_DATA + (i * 8UL));

  
  			/* Now clear out the entry. */

  			upa_writeq(0, base + SCHIZO_IOMMU_TAG + (i * 8UL));
  			upa_writeq(0, base + SCHIZO_IOMMU_DATA + (i * 8UL));

  		}
  
  		/* Leave diagnostic mode. */

  		upa_writeq(control, iommu->iommu_control);

  
  		for (i = 0; i < 16; i++) {
  			unsigned long tag, data;
  
  			tag = iommu_tag[i];
  			if (!(tag & SCHIZO_IOMMU_TAG_ERR))
  				continue;
  
  			data = iommu_data[i];
  			switch((tag & SCHIZO_IOMMU_TAG_ERRSTS) >> 23UL) {
  			case 0:
  				type_string = "Protection Error";
  				break;
  			case 1:
  				type_string = "Invalid Error";
  				break;
  			case 2:
  				type_string = "TimeOut Error";
  				break;
  			case 3:
  			default:
  				type_string = "ECC Error";
  				break;

  			}

  			printk("%s: IOMMU TAG(%d)[error(%s) ctx(%x) wr(%d) str(%d) "
  			       "sz(%dK) vpg(%08lx)]
  ",
  			       pbm->name, i, type_string,
  			       (int)((tag & SCHIZO_IOMMU_TAG_CTXT) >> 25UL),
  			       ((tag & SCHIZO_IOMMU_TAG_WRITE) ? 1 : 0),
  			       ((tag & SCHIZO_IOMMU_TAG_STREAM) ? 1 : 0),
  			       ((tag & SCHIZO_IOMMU_TAG_SIZE) ? 64 : 8),
  			       (tag & SCHIZO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT);
  			printk("%s: IOMMU DATA(%d)[valid(%d) cache(%d) ppg(%016lx)]
  ",
  			       pbm->name, i,
  			       ((data & SCHIZO_IOMMU_DATA_VALID) ? 1 : 0),
  			       ((data & SCHIZO_IOMMU_DATA_CACHE) ? 1 : 0),
  			       (data & SCHIZO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT);
  		}
  	}
  	if (pbm->stc.strbuf_enabled)
  		__schizo_check_stc_error_pbm(pbm, type);
  	spin_unlock_irqrestore(&iommu->lock, flags);
  }

  static void schizo_check_iommu_error(struct pci_pbm_info *pbm,

  				     enum schizo_error_type type)
  {

  	schizo_check_iommu_error_pbm(pbm, type);
  	if (pbm->sibling)
  		schizo_check_iommu_error_pbm(pbm->sibling, type);

  }
  
  /* Uncorrectable ECC error status gathering. */
  #define SCHIZO_UE_AFSR	0x10030UL
  #define SCHIZO_UE_AFAR	0x10038UL
  
  #define SCHIZO_UEAFSR_PPIO	0x8000000000000000UL /* Safari */
  #define SCHIZO_UEAFSR_PDRD	0x4000000000000000UL /* Safari/Tomatillo */
  #define SCHIZO_UEAFSR_PDWR	0x2000000000000000UL /* Safari */
  #define SCHIZO_UEAFSR_SPIO	0x1000000000000000UL /* Safari */
  #define SCHIZO_UEAFSR_SDMA	0x0800000000000000UL /* Safari/Tomatillo */
  #define SCHIZO_UEAFSR_ERRPNDG	0x0300000000000000UL /* Safari */
  #define SCHIZO_UEAFSR_BMSK	0x000003ff00000000UL /* Safari */
  #define SCHIZO_UEAFSR_QOFF	0x00000000c0000000UL /* Safari/Tomatillo */
  #define SCHIZO_UEAFSR_AID	0x000000001f000000UL /* Safari/Tomatillo */
  #define SCHIZO_UEAFSR_PARTIAL	0x0000000000800000UL /* Safari */
  #define SCHIZO_UEAFSR_OWNEDIN	0x0000000000400000UL /* Safari */
  #define SCHIZO_UEAFSR_MTAGSYND	0x00000000000f0000UL /* Safari */
  #define SCHIZO_UEAFSR_MTAG	0x000000000000e000UL /* Safari */
  #define SCHIZO_UEAFSR_ECCSYND	0x00000000000001ffUL /* Safari */

  static irqreturn_t schizo_ue_intr(int irq, void *dev_id)

  {

  	struct pci_pbm_info *pbm = dev_id;

  	unsigned long afsr_reg = pbm->controller_regs + SCHIZO_UE_AFSR;
  	unsigned long afar_reg = pbm->controller_regs + SCHIZO_UE_AFAR;

  	unsigned long afsr, afar, error_bits;
  	int reported, limit;
  
  	/* Latch uncorrectable error status. */

  	afar = upa_readq(afar_reg);

  
  	/* If either of the error pending bits are set in the
  	 * AFSR, the error status is being actively updated by
  	 * the hardware and we must re-read to get a clean value.
  	 */
  	limit = 1000;
  	do {

  		afsr = upa_readq(afsr_reg);

  	} while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);
  
  	/* Clear the primary/secondary error status bits. */
  	error_bits = afsr &
  		(SCHIZO_UEAFSR_PPIO | SCHIZO_UEAFSR_PDRD | SCHIZO_UEAFSR_PDWR |
  		 SCHIZO_UEAFSR_SPIO | SCHIZO_UEAFSR_SDMA);
  	if (!error_bits)
  		return IRQ_NONE;

  	upa_writeq(error_bits, afsr_reg);

  
  	/* Log the error. */

  	printk("%s: Uncorrectable Error, primary error type[%s]
  ",
  	       pbm->name,

  	       (((error_bits & SCHIZO_UEAFSR_PPIO) ?
  		 "PIO" :
  		 ((error_bits & SCHIZO_UEAFSR_PDRD) ?
  		  "DMA Read" :
  		  ((error_bits & SCHIZO_UEAFSR_PDWR) ?
  		   "DMA Write" : "???")))));

  	printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]
  ",
  	       pbm->name,

  	       (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
  	       (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
  	       (afsr & SCHIZO_UEAFSR_AID) >> 24UL);

  	printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]
  ",
  	       pbm->name,

  	       (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
  	       (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
  	       (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
  	       (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
  	       (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);

  	printk("%s: UE AFAR [%016lx]
  ", pbm->name, afar);
  	printk("%s: UE Secondary errors [", pbm->name);

  	reported = 0;
  	if (afsr & SCHIZO_UEAFSR_SPIO) {
  		reported++;
  		printk("(PIO)");
  	}
  	if (afsr & SCHIZO_UEAFSR_SDMA) {
  		reported++;
  		printk("(DMA)");
  	}
  	if (!reported)
  		printk("(none)");
  	printk("]
  ");
  
  	/* Interrogate IOMMU for error status. */

  	schizo_check_iommu_error(pbm, UE_ERR);

  	return IRQ_HANDLED;
  }
  
  #define SCHIZO_CE_AFSR	0x10040UL
  #define SCHIZO_CE_AFAR	0x10048UL
  
  #define SCHIZO_CEAFSR_PPIO	0x8000000000000000UL
  #define SCHIZO_CEAFSR_PDRD	0x4000000000000000UL
  #define SCHIZO_CEAFSR_PDWR	0x2000000000000000UL
  #define SCHIZO_CEAFSR_SPIO	0x1000000000000000UL
  #define SCHIZO_CEAFSR_SDMA	0x0800000000000000UL
  #define SCHIZO_CEAFSR_ERRPNDG	0x0300000000000000UL
  #define SCHIZO_CEAFSR_BMSK	0x000003ff00000000UL
  #define SCHIZO_CEAFSR_QOFF	0x00000000c0000000UL
  #define SCHIZO_CEAFSR_AID	0x000000001f000000UL
  #define SCHIZO_CEAFSR_PARTIAL	0x0000000000800000UL
  #define SCHIZO_CEAFSR_OWNEDIN	0x0000000000400000UL
  #define SCHIZO_CEAFSR_MTAGSYND	0x00000000000f0000UL
  #define SCHIZO_CEAFSR_MTAG	0x000000000000e000UL
  #define SCHIZO_CEAFSR_ECCSYND	0x00000000000001ffUL

  static irqreturn_t schizo_ce_intr(int irq, void *dev_id)

  {

  	struct pci_pbm_info *pbm = dev_id;

  	unsigned long afsr_reg = pbm->controller_regs + SCHIZO_CE_AFSR;
  	unsigned long afar_reg = pbm->controller_regs + SCHIZO_CE_AFAR;

  	unsigned long afsr, afar, error_bits;
  	int reported, limit;
  
  	/* Latch error status. */

  	afar = upa_readq(afar_reg);

  
  	/* If either of the error pending bits are set in the
  	 * AFSR, the error status is being actively updated by
  	 * the hardware and we must re-read to get a clean value.
  	 */
  	limit = 1000;
  	do {

  		afsr = upa_readq(afsr_reg);

  	} while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);
  
  	/* Clear primary/secondary error status bits. */
  	error_bits = afsr &
  		(SCHIZO_CEAFSR_PPIO | SCHIZO_CEAFSR_PDRD | SCHIZO_CEAFSR_PDWR |
  		 SCHIZO_CEAFSR_SPIO | SCHIZO_CEAFSR_SDMA);
  	if (!error_bits)
  		return IRQ_NONE;

  	upa_writeq(error_bits, afsr_reg);

  
  	/* Log the error. */

  	printk("%s: Correctable Error, primary error type[%s]
  ",
  	       pbm->name,

  	       (((error_bits & SCHIZO_CEAFSR_PPIO) ?
  		 "PIO" :
  		 ((error_bits & SCHIZO_CEAFSR_PDRD) ?
  		  "DMA Read" :
  		  ((error_bits & SCHIZO_CEAFSR_PDWR) ?
  		   "DMA Write" : "???")))));
  
  	/* XXX Use syndrome and afar to print out module string just like
  	 * XXX UDB CE trap handler does... -DaveM
  	 */

  	printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]
  ",
  	       pbm->name,

  	       (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
  	       (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
  	       (afsr & SCHIZO_UEAFSR_AID) >> 24UL);

  	printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]
  ",
  	       pbm->name,

  	       (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
  	       (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
  	       (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
  	       (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
  	       (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);

  	printk("%s: CE AFAR [%016lx]
  ", pbm->name, afar);
  	printk("%s: CE Secondary errors [", pbm->name);

  	reported = 0;
  	if (afsr & SCHIZO_CEAFSR_SPIO) {
  		reported++;
  		printk("(PIO)");
  	}
  	if (afsr & SCHIZO_CEAFSR_SDMA) {
  		reported++;
  		printk("(DMA)");
  	}
  	if (!reported)
  		printk("(none)");
  	printk("]
  ");

  	return IRQ_HANDLED;
  }
  
  #define SCHIZO_PCI_AFSR	0x2010UL
  #define SCHIZO_PCI_AFAR	0x2018UL
  
  #define SCHIZO_PCIAFSR_PMA	0x8000000000000000UL /* Schizo/Tomatillo */
  #define SCHIZO_PCIAFSR_PTA	0x4000000000000000UL /* Schizo/Tomatillo */
  #define SCHIZO_PCIAFSR_PRTRY	0x2000000000000000UL /* Schizo/Tomatillo */
  #define SCHIZO_PCIAFSR_PPERR	0x1000000000000000UL /* Schizo/Tomatillo */
  #define SCHIZO_PCIAFSR_PTTO	0x0800000000000000UL /* Schizo/Tomatillo */
  #define SCHIZO_PCIAFSR_PUNUS	0x0400000000000000UL /* Schizo */
  #define SCHIZO_PCIAFSR_SMA	0x0200000000000000UL /* Schizo/Tomatillo */
  #define SCHIZO_PCIAFSR_STA	0x0100000000000000UL /* Schizo/Tomatillo */
  #define SCHIZO_PCIAFSR_SRTRY	0x0080000000000000UL /* Schizo/Tomatillo */
  #define SCHIZO_PCIAFSR_SPERR	0x0040000000000000UL /* Schizo/Tomatillo */
  #define SCHIZO_PCIAFSR_STTO	0x0020000000000000UL /* Schizo/Tomatillo */
  #define SCHIZO_PCIAFSR_SUNUS	0x0010000000000000UL /* Schizo */
  #define SCHIZO_PCIAFSR_BMSK	0x000003ff00000000UL /* Schizo/Tomatillo */
  #define SCHIZO_PCIAFSR_BLK	0x0000000080000000UL /* Schizo/Tomatillo */
  #define SCHIZO_PCIAFSR_CFG	0x0000000040000000UL /* Schizo/Tomatillo */
  #define SCHIZO_PCIAFSR_MEM	0x0000000020000000UL /* Schizo/Tomatillo */
  #define SCHIZO_PCIAFSR_IO	0x0000000010000000UL /* Schizo/Tomatillo */
  
  #define SCHIZO_PCI_CTRL		(0x2000UL)
  #define SCHIZO_PCICTRL_BUS_UNUS	(1UL << 63UL) /* Safari */

  #define SCHIZO_PCICTRL_DTO_INT	(1UL << 61UL) /* Tomatillo */

  #define SCHIZO_PCICTRL_ARB_PRIO (0x1ff << 52UL) /* Tomatillo */
  #define SCHIZO_PCICTRL_ESLCK	(1UL << 51UL) /* Safari */
  #define SCHIZO_PCICTRL_ERRSLOT	(7UL << 48UL) /* Safari */
  #define SCHIZO_PCICTRL_TTO_ERR	(1UL << 38UL) /* Safari/Tomatillo */
  #define SCHIZO_PCICTRL_RTRY_ERR	(1UL << 37UL) /* Safari/Tomatillo */
  #define SCHIZO_PCICTRL_DTO_ERR	(1UL << 36UL) /* Safari/Tomatillo */
  #define SCHIZO_PCICTRL_SBH_ERR	(1UL << 35UL) /* Safari */
  #define SCHIZO_PCICTRL_SERR	(1UL << 34UL) /* Safari/Tomatillo */
  #define SCHIZO_PCICTRL_PCISPD	(1UL << 33UL) /* Safari */
  #define SCHIZO_PCICTRL_MRM_PREF	(1UL << 30UL) /* Tomatillo */
  #define SCHIZO_PCICTRL_RDO_PREF	(1UL << 29UL) /* Tomatillo */
  #define SCHIZO_PCICTRL_RDL_PREF	(1UL << 28UL) /* Tomatillo */
  #define SCHIZO_PCICTRL_PTO	(3UL << 24UL) /* Safari/Tomatillo */
  #define SCHIZO_PCICTRL_PTO_SHIFT 24UL
  #define SCHIZO_PCICTRL_TRWSW	(7UL << 21UL) /* Tomatillo */
  #define SCHIZO_PCICTRL_F_TGT_A	(1UL << 20UL) /* Tomatillo */
  #define SCHIZO_PCICTRL_S_DTO_INT (1UL << 19UL) /* Safari */
  #define SCHIZO_PCICTRL_F_TGT_RT	(1UL << 19UL) /* Tomatillo */
  #define SCHIZO_PCICTRL_SBH_INT	(1UL << 18UL) /* Safari */
  #define SCHIZO_PCICTRL_T_DTO_INT (1UL << 18UL) /* Tomatillo */
  #define SCHIZO_PCICTRL_EEN	(1UL << 17UL) /* Safari/Tomatillo */
  #define SCHIZO_PCICTRL_PARK	(1UL << 16UL) /* Safari/Tomatillo */
  #define SCHIZO_PCICTRL_PCIRST	(1UL <<  8UL) /* Safari */
  #define SCHIZO_PCICTRL_ARB_S	(0x3fUL << 0UL) /* Safari */
  #define SCHIZO_PCICTRL_ARB_T	(0xffUL << 0UL) /* Tomatillo */
  
  static irqreturn_t schizo_pcierr_intr_other(struct pci_pbm_info *pbm)
  {
  	unsigned long csr_reg, csr, csr_error_bits;
  	irqreturn_t ret = IRQ_NONE;
  	u16 stat;
  
  	csr_reg = pbm->pbm_regs + SCHIZO_PCI_CTRL;

  	csr = upa_readq(csr_reg);

  	csr_error_bits =
  		csr & (SCHIZO_PCICTRL_BUS_UNUS |
  		       SCHIZO_PCICTRL_TTO_ERR |
  		       SCHIZO_PCICTRL_RTRY_ERR |
  		       SCHIZO_PCICTRL_DTO_ERR |
  		       SCHIZO_PCICTRL_SBH_ERR |
  		       SCHIZO_PCICTRL_SERR);
  	if (csr_error_bits) {
  		/* Clear the errors.  */

  		upa_writeq(csr, csr_reg);

  
  		/* Log 'em.  */
  		if (csr_error_bits & SCHIZO_PCICTRL_BUS_UNUS)
  			printk("%s: Bus unusable error asserted.
  ",
  			       pbm->name);
  		if (csr_error_bits & SCHIZO_PCICTRL_TTO_ERR)
  			printk("%s: PCI TRDY# timeout error asserted.
  ",
  			       pbm->name);
  		if (csr_error_bits & SCHIZO_PCICTRL_RTRY_ERR)
  			printk("%s: PCI excessive retry error asserted.
  ",
  			       pbm->name);
  		if (csr_error_bits & SCHIZO_PCICTRL_DTO_ERR)
  			printk("%s: PCI discard timeout error asserted.
  ",
  			       pbm->name);
  		if (csr_error_bits & SCHIZO_PCICTRL_SBH_ERR)
  			printk("%s: PCI streaming byte hole error asserted.
  ",
  			       pbm->name);
  		if (csr_error_bits & SCHIZO_PCICTRL_SERR)
  			printk("%s: PCI SERR signal asserted.
  ",
  			       pbm->name);
  		ret = IRQ_HANDLED;
  	}
  	pci_read_config_word(pbm->pci_bus->self, PCI_STATUS, &stat);
  	if (stat & (PCI_STATUS_PARITY |
  		    PCI_STATUS_SIG_TARGET_ABORT |
  		    PCI_STATUS_REC_TARGET_ABORT |
  		    PCI_STATUS_REC_MASTER_ABORT |
  		    PCI_STATUS_SIG_SYSTEM_ERROR)) {
  		printk("%s: PCI bus error, PCI_STATUS[%04x]
  ",
  		       pbm->name, stat);
  		pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff);
  		ret = IRQ_HANDLED;
  	}
  	return ret;
  }

  static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id)

  {
  	struct pci_pbm_info *pbm = dev_id;

  	unsigned long afsr_reg, afar_reg, base;
  	unsigned long afsr, afar, error_bits;
  	int reported;
  
  	base = pbm->pbm_regs;
  
  	afsr_reg = base + SCHIZO_PCI_AFSR;
  	afar_reg = base + SCHIZO_PCI_AFAR;
  
  	/* Latch error status. */

  	afar = upa_readq(afar_reg);
  	afsr = upa_readq(afsr_reg);

  
  	/* Clear primary/secondary error status bits. */
  	error_bits = afsr &
  		(SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
  		 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
  		 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
  		 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
  		 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
  		 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS);
  	if (!error_bits)
  		return schizo_pcierr_intr_other(pbm);

  	upa_writeq(error_bits, afsr_reg);

  
  	/* Log the error. */
  	printk("%s: PCI Error, primary error type[%s]
  ",
  	       pbm->name,
  	       (((error_bits & SCHIZO_PCIAFSR_PMA) ?
  		 "Master Abort" :
  		 ((error_bits & SCHIZO_PCIAFSR_PTA) ?
  		  "Target Abort" :
  		  ((error_bits & SCHIZO_PCIAFSR_PRTRY) ?
  		   "Excessive Retries" :
  		   ((error_bits & SCHIZO_PCIAFSR_PPERR) ?
  		    "Parity Error" :
  		    ((error_bits & SCHIZO_PCIAFSR_PTTO) ?
  		     "Timeout" :
  		     ((error_bits & SCHIZO_PCIAFSR_PUNUS) ?
  		      "Bus Unusable" : "???"))))))));
  	printk("%s: bytemask[%04lx] was_block(%d) space(%s)
  ",
  	       pbm->name,
  	       (afsr & SCHIZO_PCIAFSR_BMSK) >> 32UL,
  	       (afsr & SCHIZO_PCIAFSR_BLK) ? 1 : 0,
  	       ((afsr & SCHIZO_PCIAFSR_CFG) ?
  		"Config" :
  		((afsr & SCHIZO_PCIAFSR_MEM) ?
  		 "Memory" :
  		 ((afsr & SCHIZO_PCIAFSR_IO) ?
  		  "I/O" : "???"))));
  	printk("%s: PCI AFAR [%016lx]
  ",
  	       pbm->name, afar);
  	printk("%s: PCI Secondary errors [",
  	       pbm->name);
  	reported = 0;
  	if (afsr & SCHIZO_PCIAFSR_SMA) {
  		reported++;
  		printk("(Master Abort)");
  	}
  	if (afsr & SCHIZO_PCIAFSR_STA) {
  		reported++;
  		printk("(Target Abort)");
  	}
  	if (afsr & SCHIZO_PCIAFSR_SRTRY) {
  		reported++;
  		printk("(Excessive Retries)");
  	}
  	if (afsr & SCHIZO_PCIAFSR_SPERR) {
  		reported++;
  		printk("(Parity Error)");
  	}
  	if (afsr & SCHIZO_PCIAFSR_STTO) {
  		reported++;
  		printk("(Timeout)");
  	}
  	if (afsr & SCHIZO_PCIAFSR_SUNUS) {
  		reported++;
  		printk("(Bus Unusable)");
  	}
  	if (!reported)
  		printk("(none)");
  	printk("]
  ");
  
  	/* For the error types shown, scan PBM's PCI bus for devices
  	 * which have logged that error type.
  	 */
  
  	/* If we see a Target Abort, this could be the result of an
  	 * IOMMU translation error of some sort.  It is extremely
  	 * useful to log this information as usually it indicates
  	 * a bug in the IOMMU support code or a PCI device driver.
  	 */
  	if (error_bits & (SCHIZO_PCIAFSR_PTA | SCHIZO_PCIAFSR_STA)) {

  		schizo_check_iommu_error(pbm, PCI_ERR);

  		pci_scan_for_target_abort(pbm, pbm->pci_bus);

  	}
  	if (error_bits & (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_SMA))

  		pci_scan_for_master_abort(pbm, pbm->pci_bus);

  
  	/* For excessive retries, PSYCHO/PBM will abort the device
  	 * and there is no way to specifically check for excessive
  	 * retries in the config space status registers.  So what
  	 * we hope is that we'll catch it via the master/target
  	 * abort events.
  	 */
  
  	if (error_bits & (SCHIZO_PCIAFSR_PPERR | SCHIZO_PCIAFSR_SPERR))

  		pci_scan_for_parity_error(pbm, pbm->pci_bus);

  	return IRQ_HANDLED;
  }
  
  #define SCHIZO_SAFARI_ERRLOG	0x10018UL
  
  #define SAFARI_ERRLOG_ERROUT	0x8000000000000000UL
  
  #define BUS_ERROR_BADCMD	0x4000000000000000UL /* Schizo/Tomatillo */
  #define BUS_ERROR_SSMDIS	0x2000000000000000UL /* Safari */
  #define BUS_ERROR_BADMA		0x1000000000000000UL /* Safari */
  #define BUS_ERROR_BADMB		0x0800000000000000UL /* Safari */
  #define BUS_ERROR_BADMC		0x0400000000000000UL /* Safari */
  #define BUS_ERROR_SNOOP_GR	0x0000000000200000UL /* Tomatillo */
  #define BUS_ERROR_SNOOP_PCI	0x0000000000100000UL /* Tomatillo */
  #define BUS_ERROR_SNOOP_RD	0x0000000000080000UL /* Tomatillo */
  #define BUS_ERROR_SNOOP_RDS	0x0000000000020000UL /* Tomatillo */
  #define BUS_ERROR_SNOOP_RDSA	0x0000000000010000UL /* Tomatillo */
  #define BUS_ERROR_SNOOP_OWN	0x0000000000008000UL /* Tomatillo */
  #define BUS_ERROR_SNOOP_RDO	0x0000000000004000UL /* Tomatillo */
  #define BUS_ERROR_CPU1PS	0x0000000000002000UL /* Safari */
  #define BUS_ERROR_WDATA_PERR	0x0000000000002000UL /* Tomatillo */
  #define BUS_ERROR_CPU1PB	0x0000000000001000UL /* Safari */
  #define BUS_ERROR_CTRL_PERR	0x0000000000001000UL /* Tomatillo */
  #define BUS_ERROR_CPU0PS	0x0000000000000800UL /* Safari */
  #define BUS_ERROR_SNOOP_ERR	0x0000000000000800UL /* Tomatillo */
  #define BUS_ERROR_CPU0PB	0x0000000000000400UL /* Safari */
  #define BUS_ERROR_JBUS_ILL_B	0x0000000000000400UL /* Tomatillo */
  #define BUS_ERROR_CIQTO		0x0000000000000200UL /* Safari */
  #define BUS_ERROR_LPQTO		0x0000000000000100UL /* Safari */
  #define BUS_ERROR_JBUS_ILL_C	0x0000000000000100UL /* Tomatillo */
  #define BUS_ERROR_SFPQTO	0x0000000000000080UL /* Safari */
  #define BUS_ERROR_UFPQTO	0x0000000000000040UL /* Safari */
  #define BUS_ERROR_RD_PERR	0x0000000000000040UL /* Tomatillo */
  #define BUS_ERROR_APERR		0x0000000000000020UL /* Safari/Tomatillo */
  #define BUS_ERROR_UNMAP		0x0000000000000010UL /* Safari/Tomatillo */
  #define BUS_ERROR_BUSERR	0x0000000000000004UL /* Safari/Tomatillo */
  #define BUS_ERROR_TIMEOUT	0x0000000000000002UL /* Safari/Tomatillo */
  #define BUS_ERROR_ILL		0x0000000000000001UL /* Safari */
  
  /* We only expect UNMAP errors here.  The rest of the Safari errors
   * are marked fatal and thus cause a system reset.
   */

  static irqreturn_t schizo_safarierr_intr(int irq, void *dev_id)

  {

  	struct pci_pbm_info *pbm = dev_id;

  	u64 errlog;

  	errlog = upa_readq(pbm->controller_regs + SCHIZO_SAFARI_ERRLOG);
  	upa_writeq(errlog & ~(SAFARI_ERRLOG_ERROUT),
  		   pbm->controller_regs + SCHIZO_SAFARI_ERRLOG);

  
  	if (!(errlog & BUS_ERROR_UNMAP)) {

  		printk("%s: Unexpected Safari/JBUS error interrupt, errlog[%016llx]
  ",

  		       pbm->name, errlog);

  		return IRQ_HANDLED;
  	}

  	printk("%s: Safari/JBUS interrupt, UNMAPPED error, interrogating IOMMUs.
  ",
  	       pbm->name);

  	schizo_check_iommu_error(pbm, SAFARI_ERR);

  	return IRQ_HANDLED;
  }
  
  /* Nearly identical to PSYCHO equivalents... */
  #define SCHIZO_ECC_CTRL		0x10020UL
  #define  SCHIZO_ECCCTRL_EE	 0x8000000000000000UL /* Enable ECC Checking */
  #define  SCHIZO_ECCCTRL_UE	 0x4000000000000000UL /* Enable UE Interrupts */
  #define  SCHIZO_ECCCTRL_CE	 0x2000000000000000UL /* Enable CE INterrupts */
  
  #define SCHIZO_SAFARI_ERRCTRL	0x10008UL
  #define  SCHIZO_SAFERRCTRL_EN	 0x8000000000000000UL
  #define SCHIZO_SAFARI_IRQCTRL	0x10010UL
  #define  SCHIZO_SAFIRQCTRL_EN	 0x8000000000000000UL

  static int pbm_routes_this_ino(struct pci_pbm_info *pbm, u32 ino)
  {
  	ino &= IMAP_INO;
  
  	if (pbm->ino_bitmap & (1UL << ino))
  		return 1;
  
  	return 0;
  }

  /* How the Tomatillo IRQs are routed around is pure guesswork here.
   *
   * All the Tomatillo devices I see in prtconf dumps seem to have only

   * a single PCI bus unit attached to it.  It would seem they are separate

   * devices because their PortID (ie. JBUS ID) values are all different
   * and thus the registers are mapped to totally different locations.
   *
   * However, two Tomatillo's look "similar" in that the only difference
   * in their PortID is the lowest bit.
   *
   * So if we were to ignore this lower bit, it certainly looks like two
   * PCI bus units of the same Tomatillo.  I still have not really
   * figured this out...
   */

  static void tomatillo_register_error_handlers(struct pci_pbm_info *pbm)

  {

  	struct platform_device *op = of_find_device_by_node(pbm->op->dev.of_node);

  	u64 tmp, err_mask, err_no_mask;

  	int err;

  	/* Tomatillo IRQ property layout is:
  	 * 0: PCIERR
  	 * 1: UE ERR
  	 * 2: CE ERR
  	 * 3: SERR
  	 * 4: POWER FAIL?
  	 */

  	if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) {

  		err = request_irq(op->archdata.irqs[1], schizo_ue_intr, 0,

  				  "TOMATILLO_UE", pbm);
  		if (err)
  			printk(KERN_WARNING "%s: Could not register UE, "
  			       "err=%d
  ", pbm->name, err);
  	}
  	if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) {

  		err = request_irq(op->archdata.irqs[2], schizo_ce_intr, 0,

  				  "TOMATILLO_CE", pbm);
  		if (err)
  			printk(KERN_WARNING "%s: Could not register CE, "
  			       "err=%d
  ", pbm->name, err);
  	}
  	err = 0;
  	if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) {

  		err = request_irq(op->archdata.irqs[0], schizo_pcierr_intr, 0,

  				  "TOMATILLO_PCIERR", pbm);
  	} else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) {

  		err = request_irq(op->archdata.irqs[0], schizo_pcierr_intr, 0,

  				  "TOMATILLO_PCIERR", pbm);
  	}
  	if (err)
  		printk(KERN_WARNING "%s: Could not register PCIERR, "
  		       "err=%d
  ", pbm->name, err);
  
  	if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) {

  		err = request_irq(op->archdata.irqs[3], schizo_safarierr_intr, 0,

  				  "TOMATILLO_SERR", pbm);
  		if (err)
  			printk(KERN_WARNING "%s: Could not register SERR, "
  			       "err=%d
  ", pbm->name, err);
  	}

  
  	/* Enable UE and CE interrupts for controller. */

  	upa_writeq((SCHIZO_ECCCTRL_EE |
  		    SCHIZO_ECCCTRL_UE |
  		    SCHIZO_ECCCTRL_CE), pbm->controller_regs + SCHIZO_ECC_CTRL);

  
  	/* Enable PCI Error interrupts and clear error
  	 * bits.
  	 */
  	err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
  		    SCHIZO_PCICTRL_TTO_ERR |
  		    SCHIZO_PCICTRL_RTRY_ERR |
  		    SCHIZO_PCICTRL_SERR |
  		    SCHIZO_PCICTRL_EEN);
  
  	err_no_mask = SCHIZO_PCICTRL_DTO_ERR;

  	tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);

  	tmp |= err_mask;
  	tmp &= ~err_no_mask;

  	upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);

  
  	err_mask = (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
  		    SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
  		    SCHIZO_PCIAFSR_PTTO |
  		    SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
  		    SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
  		    SCHIZO_PCIAFSR_STTO);

  	upa_writeq(err_mask, pbm->pbm_regs + SCHIZO_PCI_AFSR);

  
  	err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SNOOP_GR |
  		    BUS_ERROR_SNOOP_PCI | BUS_ERROR_SNOOP_RD |
  		    BUS_ERROR_SNOOP_RDS | BUS_ERROR_SNOOP_RDSA |
  		    BUS_ERROR_SNOOP_OWN | BUS_ERROR_SNOOP_RDO |
  		    BUS_ERROR_WDATA_PERR | BUS_ERROR_CTRL_PERR |
  		    BUS_ERROR_SNOOP_ERR | BUS_ERROR_JBUS_ILL_B |
  		    BUS_ERROR_JBUS_ILL_C | BUS_ERROR_RD_PERR |
  		    BUS_ERROR_APERR | BUS_ERROR_UNMAP |
  		    BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT);

  	upa_writeq((SCHIZO_SAFERRCTRL_EN | err_mask),
  		   pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL);

  	upa_writeq((SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP)),
  		   pbm->controller_regs + SCHIZO_SAFARI_IRQCTRL);

  }

  static void schizo_register_error_handlers(struct pci_pbm_info *pbm)

  {

  	struct platform_device *op = of_find_device_by_node(pbm->op->dev.of_node);

  	u64 tmp, err_mask, err_no_mask;

  	int err;

  	/* Schizo IRQ property layout is:
  	 * 0: PCIERR
  	 * 1: UE ERR
  	 * 2: CE ERR
  	 * 3: SERR
  	 * 4: POWER FAIL?
  	 */

  	if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) {

  		err = request_irq(op->archdata.irqs[1], schizo_ue_intr, 0,

  				  "SCHIZO_UE", pbm);
  		if (err)
  			printk(KERN_WARNING "%s: Could not register UE, "
  			       "err=%d
  ", pbm->name, err);
  	}
  	if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) {

  		err = request_irq(op->archdata.irqs[2], schizo_ce_intr, 0,

  				  "SCHIZO_CE", pbm);
  		if (err)
  			printk(KERN_WARNING "%s: Could not register CE, "
  			       "err=%d
  ", pbm->name, err);
  	}
  	err = 0;
  	if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) {

  		err = request_irq(op->archdata.irqs[0], schizo_pcierr_intr, 0,

  				  "SCHIZO_PCIERR", pbm);
  	} else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) {

  		err = request_irq(op->archdata.irqs[0], schizo_pcierr_intr, 0,

  				  "SCHIZO_PCIERR", pbm);
  	}
  	if (err)
  		printk(KERN_WARNING "%s: Could not register PCIERR, "
  		       "err=%d
  ", pbm->name, err);
  
  	if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) {

  		err = request_irq(op->archdata.irqs[3], schizo_safarierr_intr, 0,

  				  "SCHIZO_SERR", pbm);
  		if (err)
  			printk(KERN_WARNING "%s: Could not register SERR, "
  			       "err=%d
  ", pbm->name, err);
  	}

  
  	/* Enable UE and CE interrupts for controller. */

  	upa_writeq((SCHIZO_ECCCTRL_EE |
  		    SCHIZO_ECCCTRL_UE |
  		    SCHIZO_ECCCTRL_CE), pbm->controller_regs + SCHIZO_ECC_CTRL);

  
  	err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
  		    SCHIZO_PCICTRL_ESLCK |
  		    SCHIZO_PCICTRL_TTO_ERR |
  		    SCHIZO_PCICTRL_RTRY_ERR |
  		    SCHIZO_PCICTRL_SBH_ERR |
  		    SCHIZO_PCICTRL_SERR |
  		    SCHIZO_PCICTRL_EEN);
  
  	err_no_mask = (SCHIZO_PCICTRL_DTO_ERR |
  		       SCHIZO_PCICTRL_SBH_INT);
  
  	/* Enable PCI Error interrupts and clear error
  	 * bits for each PBM.
  	 */

  	tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);

  	tmp |= err_mask;
  	tmp &= ~err_no_mask;

  	upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);

  	upa_writeq((SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
  		    SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
  		    SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
  		    SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
  		    SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
  		    SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS),
  		   pbm->pbm_regs + SCHIZO_PCI_AFSR);

  
  	/* Make all Safari error conditions fatal except unmapped
  	 * errors which we make generate interrupts.
  	 */
  	err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SSMDIS |
  		    BUS_ERROR_BADMA | BUS_ERROR_BADMB |
  		    BUS_ERROR_BADMC |
  		    BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
  		    BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB |
  		    BUS_ERROR_CIQTO |
  		    BUS_ERROR_LPQTO | BUS_ERROR_SFPQTO |
  		    BUS_ERROR_UFPQTO | BUS_ERROR_APERR |
  		    BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT |
  		    BUS_ERROR_ILL);
  #if 1
  	/* XXX Something wrong with some Excalibur systems
  	 * XXX Sun is shipping.  The behavior on a 2-cpu
  	 * XXX machine is that both CPU1 parity error bits
  	 * XXX are set and are immediately set again when
  	 * XXX their error status bits are cleared.  Just
  	 * XXX ignore them for now.  -DaveM
  	 */
  	err_mask &= ~(BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
  		      BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB);
  #endif

  	upa_writeq((SCHIZO_SAFERRCTRL_EN | err_mask),
  		   pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL);

  }

  static void pbm_config_busmastering(struct pci_pbm_info *pbm)

  {
  	u8 *addr;
  
  	/* Set cache-line size to 64 bytes, this is actually
  	 * a nop but I do it for completeness.
  	 */
  	addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
  					0, PCI_CACHE_LINE_SIZE);
  	pci_config_write8(addr, 64 / sizeof(u32));
  
  	/* Set PBM latency timer to 64 PCI clocks. */
  	addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
  					0, PCI_LATENCY_TIMER);
  	pci_config_write8(addr, 64);
  }

  static void __devinit schizo_scan_bus(struct pci_pbm_info *pbm,
  				      struct device *parent)

  {

  	pbm_config_busmastering(pbm);
  	pbm->is_66mhz_capable =

  		(of_find_property(pbm->op->dev.of_node, "66mhz-capable", NULL)

  		 != NULL);

  	pbm->pci_bus = pci_scan_one_pbm(pbm, parent);

  	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
  		tomatillo_register_error_handlers(pbm);

  	else

  		schizo_register_error_handlers(pbm);

  }

  #define SCHIZO_STRBUF_CONTROL		(0x02800UL)
  #define SCHIZO_STRBUF_FLUSH		(0x02808UL)
  #define SCHIZO_STRBUF_FSYNC		(0x02810UL)
  #define SCHIZO_STRBUF_CTXFLUSH		(0x02818UL)
  #define SCHIZO_STRBUF_CTXMATCH		(0x10000UL)
  
  static void schizo_pbm_strbuf_init(struct pci_pbm_info *pbm)
  {
  	unsigned long base = pbm->pbm_regs;
  	u64 control;
  
  	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
  		/* TOMATILLO lacks streaming cache.  */
  		return;
  	}
  
  	/* SCHIZO has context flushing. */
  	pbm->stc.strbuf_control		= base + SCHIZO_STRBUF_CONTROL;
  	pbm->stc.strbuf_pflush		= base + SCHIZO_STRBUF_FLUSH;
  	pbm->stc.strbuf_fsync		= base + SCHIZO_STRBUF_FSYNC;
  	pbm->stc.strbuf_ctxflush	= base + SCHIZO_STRBUF_CTXFLUSH;
  	pbm->stc.strbuf_ctxmatch_base	= base + SCHIZO_STRBUF_CTXMATCH;
  
  	pbm->stc.strbuf_flushflag = (volatile unsigned long *)
  		((((unsigned long)&pbm->stc.__flushflag_buf[0])
  		  + 63UL)
  		 & ~63UL);
  	pbm->stc.strbuf_flushflag_pa = (unsigned long)
  		__pa(pbm->stc.strbuf_flushflag);
  
  	/* Turn off LRU locking and diag mode, enable the
  	 * streaming buffer and leave the rerun-disable
  	 * setting however OBP set it.
  	 */

  	control = upa_readq(pbm->stc.strbuf_control);

  	control &= ~(SCHIZO_STRBUF_CTRL_LPTR |
  		     SCHIZO_STRBUF_CTRL_LENAB |
  		     SCHIZO_STRBUF_CTRL_DENAB);
  	control |= SCHIZO_STRBUF_CTRL_ENAB;

  	upa_writeq(control, pbm->stc.strbuf_control);

  
  	pbm->stc.strbuf_enabled = 1;
  }
  
  #define SCHIZO_IOMMU_CONTROL		(0x00200UL)
  #define SCHIZO_IOMMU_TSBBASE		(0x00208UL)
  #define SCHIZO_IOMMU_FLUSH		(0x00210UL)
  #define SCHIZO_IOMMU_CTXFLUSH		(0x00218UL)

  static int schizo_pbm_iommu_init(struct pci_pbm_info *pbm)

  {

  	static const u32 vdma_default[] = { 0xc0000000, 0x40000000 };

  	unsigned long i, tagbase, database;

  	struct iommu *iommu = pbm->iommu;

  	int tsbsize, err;

  	const u32 *vdma;
  	u32 dma_mask;

  	u64 control;

  	vdma = of_get_property(pbm->op->dev.of_node, "virtual-dma", NULL);

  	if (!vdma)
  		vdma = vdma_default;

  
  	dma_mask = vdma[0];
  	switch (vdma[1]) {
  		case 0x20000000:
  			dma_mask |= 0x1fffffff;
  			tsbsize = 64;
  			break;
  
  		case 0x40000000:
  			dma_mask |= 0x3fffffff;
  			tsbsize = 128;
  			break;
  
  		case 0x80000000:
  			dma_mask |= 0x7fffffff;
  			tsbsize = 128;
  			break;
  
  		default:

  			printk(KERN_ERR PFX "Strange virtual-dma size.
  ");
  			return -EINVAL;
  	}

  	/* Register addresses, SCHIZO has iommu ctx flushing. */
  	iommu->iommu_control  = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL;
  	iommu->iommu_tsbbase  = pbm->pbm_regs + SCHIZO_IOMMU_TSBBASE;
  	iommu->iommu_flush    = pbm->pbm_regs + SCHIZO_IOMMU_FLUSH;

  	iommu->iommu_tags     = iommu->iommu_flush + (0xa580UL - 0x0210UL);

  	iommu->iommu_ctxflush = pbm->pbm_regs + SCHIZO_IOMMU_CTXFLUSH;
  
  	/* We use the main control/status register of SCHIZO as the write
  	 * completion register.
  	 */
  	iommu->write_complete_reg = pbm->controller_regs + 0x10000UL;
  
  	/*
  	 * Invalidate TLB Entries.
  	 */

  	control = upa_readq(iommu->iommu_control);

  	control |= SCHIZO_IOMMU_CTRL_DENAB;

  	upa_writeq(control, iommu->iommu_control);

  
  	tagbase = SCHIZO_IOMMU_TAG, database = SCHIZO_IOMMU_DATA;

  	for (i = 0; i < 16; i++) {

  		upa_writeq(0, pbm->pbm_regs + tagbase + (i * 8UL));
  		upa_writeq(0, pbm->pbm_regs + database + (i * 8UL));

  	}
  
  	/* Leave diag mode enabled for full-flushing done
  	 * in pci_iommu.c
  	 */

  	err = iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask,
  			       pbm->numa_node);

  	if (err) {
  		printk(KERN_ERR PFX "iommu_table_init() fails with %d
  ", err);

  		return err;

  	}

  	upa_writeq(__pa(iommu->page_table), iommu->iommu_tsbbase);

  	control = upa_readq(iommu->iommu_control);

  	control &= ~(SCHIZO_IOMMU_CTRL_TSBSZ | SCHIZO_IOMMU_CTRL_TBWSZ);
  	switch (tsbsize) {
  	case 64:
  		control |= SCHIZO_IOMMU_TSBSZ_64K;
  		break;
  	case 128:
  		control |= SCHIZO_IOMMU_TSBSZ_128K;
  		break;

  	}

  
  	control |= SCHIZO_IOMMU_CTRL_ENAB;

  	upa_writeq(control, iommu->iommu_control);

  
  	return 0;

  }
  
  #define SCHIZO_PCI_IRQ_RETRY	(0x1a00UL)
  #define  SCHIZO_IRQ_RETRY_INF	 0xffUL
  
  #define SCHIZO_PCI_DIAG			(0x2020UL)
  #define  SCHIZO_PCIDIAG_D_BADECC	(1UL << 10UL) /* Disable BAD ECC errors (Schizo) */
  #define  SCHIZO_PCIDIAG_D_BYPASS	(1UL <<  9UL) /* Disable MMU bypass mode (Schizo/Tomatillo) */
  #define  SCHIZO_PCIDIAG_D_TTO		(1UL <<  8UL) /* Disable TTO errors (Schizo/Tomatillo) */
  #define  SCHIZO_PCIDIAG_D_RTRYARB	(1UL <<  7UL) /* Disable retry arbitration (Schizo) */
  #define  SCHIZO_PCIDIAG_D_RETRY		(1UL <<  6UL) /* Disable retry limit (Schizo/Tomatillo) */
  #define  SCHIZO_PCIDIAG_D_INTSYNC	(1UL <<  5UL) /* Disable interrupt/DMA synch (Schizo/Tomatillo) */
  #define  SCHIZO_PCIDIAG_I_DMA_PARITY	(1UL <<  3UL) /* Invert DMA parity (Schizo/Tomatillo) */
  #define  SCHIZO_PCIDIAG_I_PIOD_PARITY	(1UL <<  2UL) /* Invert PIO data parity (Schizo/Tomatillo) */
  #define  SCHIZO_PCIDIAG_I_PIOA_PARITY	(1UL <<  1UL) /* Invert PIO address parity (Schizo/Tomatillo) */
  
  #define TOMATILLO_PCI_IOC_CSR		(0x2248UL)
  #define TOMATILLO_IOC_PART_WPENAB	0x0000000000080000UL
  #define TOMATILLO_IOC_RDMULT_PENAB	0x0000000000040000UL
  #define TOMATILLO_IOC_RDONE_PENAB	0x0000000000020000UL
  #define TOMATILLO_IOC_RDLINE_PENAB	0x0000000000010000UL
  #define TOMATILLO_IOC_RDMULT_PLEN	0x000000000000c000UL
  #define TOMATILLO_IOC_RDMULT_PLEN_SHIFT	14UL
  #define TOMATILLO_IOC_RDONE_PLEN	0x0000000000003000UL
  #define TOMATILLO_IOC_RDONE_PLEN_SHIFT	12UL
  #define TOMATILLO_IOC_RDLINE_PLEN	0x0000000000000c00UL
  #define TOMATILLO_IOC_RDLINE_PLEN_SHIFT	10UL
  #define TOMATILLO_IOC_PREF_OFF		0x00000000000003f8UL
  #define TOMATILLO_IOC_PREF_OFF_SHIFT	3UL
  #define TOMATILLO_IOC_RDMULT_CPENAB	0x0000000000000004UL
  #define TOMATILLO_IOC_RDONE_CPENAB	0x0000000000000002UL
  #define TOMATILLO_IOC_RDLINE_CPENAB	0x0000000000000001UL
  
  #define TOMATILLO_PCI_IOC_TDIAG		(0x2250UL)
  #define TOMATILLO_PCI_IOC_DDIAG		(0x2290UL)

  static void schizo_pbm_hw_init(struct pci_pbm_info *pbm)

  {
  	u64 tmp;

  	upa_writeq(5, pbm->pbm_regs + SCHIZO_PCI_IRQ_RETRY);

  	tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);

  	/* Enable arbiter for all PCI slots.  */
  	tmp |= 0xff;

  	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
  	    pbm->chip_version >= 0x2)
  		tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT;

  	if (!of_find_property(pbm->op->dev.of_node, "no-bus-parking", NULL))

  		tmp |= SCHIZO_PCICTRL_PARK;

  	else
  		tmp &= ~SCHIZO_PCICTRL_PARK;

  
  	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
  	    pbm->chip_version <= 0x1)

  		tmp |= SCHIZO_PCICTRL_DTO_INT;

  	else

  		tmp &= ~SCHIZO_PCICTRL_DTO_INT;

  
  	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
  		tmp |= (SCHIZO_PCICTRL_MRM_PREF |
  			SCHIZO_PCICTRL_RDO_PREF |
  			SCHIZO_PCICTRL_RDL_PREF);

  	upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);

  	tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_DIAG);

  	tmp &= ~(SCHIZO_PCIDIAG_D_RTRYARB |
  		 SCHIZO_PCIDIAG_D_RETRY |
  		 SCHIZO_PCIDIAG_D_INTSYNC);

  	upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_DIAG);

  
  	if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
  		/* Clear prefetch lengths to workaround a bug in
  		 * Jalapeno...
  		 */
  		tmp = (TOMATILLO_IOC_PART_WPENAB |
  		       (1 << TOMATILLO_IOC_PREF_OFF_SHIFT) |
  		       TOMATILLO_IOC_RDMULT_CPENAB |
  		       TOMATILLO_IOC_RDONE_CPENAB |
  		       TOMATILLO_IOC_RDLINE_CPENAB);

  		upa_writeq(tmp, pbm->pbm_regs + TOMATILLO_PCI_IOC_CSR);

  	}
  }

  static int __devinit schizo_pbm_init(struct pci_pbm_info *pbm,

  				     struct platform_device *op, u32 portid,

  				     int chip_type)

  {

  	const struct linux_prom64_registers *regs;

  	struct device_node *dp = op->dev.of_node;

  	const char *chipset_name;

  	int err;

  
  	switch (chip_type) {
  	case PBM_CHIP_TYPE_TOMATILLO:
  		chipset_name = "TOMATILLO";
  		break;
  
  	case PBM_CHIP_TYPE_SCHIZO_PLUS:
  		chipset_name = "SCHIZO+";
  		break;
  
  	case PBM_CHIP_TYPE_SCHIZO:
  	default:
  		chipset_name = "SCHIZO";
  		break;

  	}

  
  	/* For SCHIZO, three OBP regs:
  	 * 1) PBM controller regs
  	 * 2) Schizo front-end controller regs (same for both PBMs)
  	 * 3) PBM PCI config space
  	 *
  	 * For TOMATILLO, four OBP regs:
  	 * 1) PBM controller regs
  	 * 2) Tomatillo front-end controller regs
  	 * 3) PBM PCI config space
  	 * 4) Ichip regs
  	 */

  	regs = of_get_property(dp, "reg", NULL);

  	pbm->next = pci_pbm_root;
  	pci_pbm_root = pbm;

  	pbm->numa_node = -1;

  	pbm->pci_ops = &sun4u_pci_ops;
  	pbm->config_space_reg_bits = 8;

  	pbm->index = pci_num_pbms++;

  	pbm->portid = portid;

  	pbm->op = op;

  
  	pbm->chip_type = chip_type;

  	pbm->chip_version = of_getintprop_default(dp, "version#", 0);
  	pbm->chip_revision = of_getintprop_default(dp, "module-version#", 0);

  
  	pbm->pbm_regs = regs[0].phys_addr;
  	pbm->controller_regs = regs[1].phys_addr - 0x10000UL;

  	if (chip_type == PBM_CHIP_TYPE_TOMATILLO)

  		pbm->sync_reg = regs[3].phys_addr + 0x1a18UL;

  	pbm->name = dp->full_name;

  	printk("%s: %s PCI Bus Module ver[%x:%x]
  ",

  	       pbm->name, chipset_name,

  	       pbm->chip_version, pbm->chip_revision);

  
  	schizo_pbm_hw_init(pbm);

  	pci_determine_mem_io_space(pbm);

  	pci_get_pbm_props(pbm);

  	err = schizo_pbm_iommu_init(pbm);
  	if (err)
  		return err;

  	schizo_pbm_strbuf_init(pbm);

  	schizo_scan_bus(pbm, &op->dev);

  	return 0;

  }
  
  static inline int portid_compare(u32 x, u32 y, int chip_type)
  {
  	if (chip_type == PBM_CHIP_TYPE_TOMATILLO) {
  		if (x == (y ^ 1))
  			return 1;
  		return 0;
  	}
  	return (x == y);
  }

  static struct pci_pbm_info * __devinit schizo_find_sibling(u32 portid,
  							   int chip_type)
  {
  	struct pci_pbm_info *pbm;
  
  	for (pbm = pci_pbm_root; pbm; pbm = pbm->next) {
  		if (portid_compare(pbm->portid, portid, chip_type))
  			return pbm;
  	}
  	return NULL;
  }

  static int __devinit __schizo_init(struct platform_device *op, unsigned long chip_type)

  {

  	struct device_node *dp = op->dev.of_node;

  	struct pci_pbm_info *pbm;

  	struct iommu *iommu;

  	u32 portid;

  	int err;

  	portid = of_getintprop_default(dp, "portid", 0xff);

  	err = -ENOMEM;

  	pbm = kzalloc(sizeof(*pbm), GFP_KERNEL);
  	if (!pbm) {
  		printk(KERN_ERR PFX "Cannot allocate pci_pbm_info.
  ");

  		goto out_err;

  	}

  	pbm->sibling = schizo_find_sibling(portid, chip_type);
  
  	iommu = kzalloc(sizeof(struct iommu), GFP_KERNEL);

  	if (!iommu) {
  		printk(KERN_ERR PFX "Cannot allocate PBM A iommu.
  ");

  		goto out_free_pbm;

  	}

  	pbm->iommu = iommu;

  	if (schizo_pbm_init(pbm, op, portid, chip_type))
  		goto out_free_iommu;

  	if (pbm->sibling)
  		pbm->sibling->sibling = pbm;

  	dev_set_drvdata(&op->dev, pbm);

  	return 0;

  out_free_iommu:
  	kfree(pbm->iommu);

  out_free_pbm:
  	kfree(pbm);

  
  out_err:
  	return err;

  }

  static const struct of_device_id schizo_match[];

  static int __devinit schizo_probe(struct platform_device *op)

  {

  	const struct of_device_id *match;
  
  	match = of_match_device(schizo_match, &op->dev);
  	if (!match)

  		return -EINVAL;

  	return __schizo_init(op, (unsigned long)match->data);

  }

  /* The ordering of this table is very important.  Some Tomatillo
   * nodes announce that they are compatible with both pci108e,a801
   * and pci108e,8001.  So list the chips in reverse chronological
   * order.
   */

  static const struct of_device_id schizo_match[] = {

  	{
  		.name = "pci",
  		.compatible = "pci108e,a801",
  		.data = (void *) PBM_CHIP_TYPE_TOMATILLO,
  	},
  	{
  		.name = "pci",
  		.compatible = "pci108e,8002",
  		.data = (void *) PBM_CHIP_TYPE_SCHIZO_PLUS,
  	},
  	{
  		.name = "pci",
  		.compatible = "pci108e,8001",
  		.data = (void *) PBM_CHIP_TYPE_SCHIZO,
  	},
  	{},
  };

  static struct platform_driver schizo_driver = {

  	.driver = {
  		.name = DRIVER_NAME,
  		.owner = THIS_MODULE,
  		.of_match_table = schizo_match,
  	},

  	.probe		= schizo_probe,
  };
  
  static int __init schizo_init(void)

  {

  	return platform_driver_register(&schizo_driver);

  }

  
  subsys_initcall(schizo_init);