/* $NetBSD: mcpciareg.h,v 1.8 2012/02/06 02:14:14 matt Exp $ */
/*
* Copyright (c) 1998 by Matthew Jacob
* NASA AMES Research Center.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice immediately at the beginning of the file, without modification,
* this list of conditions, and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Taken from:
*
* ``RAWHIDE Systems Programmer's Manual, Revision 1.4''
*/
#define REGVAL(r) (*(volatile int32_t *)ALPHA_PHYS_TO_K0SEG(r))
/*
* There are 4 possible PCI busses per MCBUS.
*
* (from mcpcia.h, Digital Unix 4.0E):
*
* I/O Space Per PCI Node (8GBytes per)
* ------------------------------------
* (8+x)8 0000 0000 - (8+x)9 FFFF FFFF - I/O Space for PCI0
* (8+x)A 0000 0000 - (8+x)B FFFF FFFF - I/O Space for PCI1
* (8+x)C 0000 0000 - (8+x)D FFFF FFFF - I/O Space for PCI2
* (8+x)E 0000 0000 - (8+x)F FFFF FFFF - I/O Space for PCI3
*
* CPU to PCI Address Mapping:
* ---------------------------
*
* +---+-------+-------+--+--+--+--+--+--+---------------+----------+-----+
* | 1 | GID | MID | | | | | | | Byte Aligned | Byte Len | Zero|
* | | | | | | | | | | I/O Address | Field | |
* +---+-------+-------+--+--+--+--+--+--+---------------+----------+-----+
* 39 38 36 35 33 32 31 30 29 28 27 26 5 4 3 2 0
*
* <39> - I/O Select (Always 1 for direct I/O access)
*
* <38-36> - Global Bus slot # (MCBUS #)
* GID slot #0->7 (MCBUS #0->7)
*
* <35-33> - MCBUS Slot #
* MCBUS slot 0->7
*
* <32-27> - PCI Address Space
* 0.xxxxx = Sparse Memory Space ( 4GB on MCBUS; 128MB on PCI)
* 1.0xxxx = Dense Memory Space ( 2GB on MCBUS; 2GB on PCI)
* 1.10xxx = Sparse IO Space ( 1GB on MCBUS; 32MB on PCI)
* 1.110xx = Sparse Config Space (512MB on MCBUS; 16MB on PCI)
* 1.1110x = PCI Bridge CSR Space (256MB on MCBUS) -- Sparse-mapped!
* 1.11110 = Interrupt Acknowledge (128MB on MCBUS)
* 1.11111 = Unused (128MB on MCBUS)
*
* ------------------------------------------------------------
* CPU to PCI Address Mapping for MCBUS-PCIy Bridge on MCBUS x:
* ------------------------------------------------------------
*
* CPU Address Range PCI Address Range PCI Address Space
* ------------------------ --------------------- ------------------------
* (8+x)(8+y*2).0000.0000 0000.0000 - 00FF.FFFF PCIy Sparse Memory Space
* - (8+x)(8+y*2).1FFF.FFFF (fixed, lower 16MB)
*
* (8+x)(8+y*2).2000.0000 0100.0000 - 07FF.FFFF PCIy Sparse Memory Space
* - (8+x)(8+y*2).FFFF.FFFF (variable, offset = 0)
*
* (8+x)(9+y*2).0000.0000 0000.0000 - 7FFF.FFFF PCIy Dense Memory Space
* - (8+x)(9+y*2).7FFF.FFFF or 8000.0000 - FFFF.FFFF if HAE_DENSE_MEM = 1
*
* (8+x)(9+y*2).8000.0000 0000.0000 - 0000.FFFF PCIy Sparse IO Space
* - (8+x)(9+y*2).801F.FFFF (fixed, lower 64K)
*
* (8+x)(9+y*2).8020.0000 0001.0000 - 01FF.FFFF PCIy Sparse IO Space
* - (8+x)(9+y*2).BFFF.FFFF (variable, offset = 0)
*
* (8+x)(9+y*2).C000.0000 0000.0000 - 0FFF.FFFF PCIy Config Space (16MB)
* - (8+x)(9+y*2).DFFF.FFFF
*
* (8+x)(9+y*2).E000.0000 N/A PCIy-Bridge CSR Space
* (8MB)
* - (8+x)(9+y*2).EFFF.FFFF
*
* (8+x)(9+y*2).F000.0000 N/A Unused
* - (8+x)(9+y*2).F000.3EFF
*
* (8+x)(9+y*2).F000.3F00, N/A PCIy Interrupt ACK0
* (8+x)(9+y*2).F000.3F40 PCIy INteruppt ACK1
*
* (8+x)(9+y*2).F000.3F80 N/A Unused
* - (8+x)(9+y*2).FFFF.FFFF
*
*/
/*
* MC-PCI Bus Bridge CSRs
*
* Address Map Overview:
*
* Offset Selected Space
* ---------------- -------------------------------------------------
* 0x00000000 General config, control, diag, error logging regs.
* 0x00001000 PCI Error Status
* 0x00001300 PCI Scatter/Gather Regs.
* 0x00001800 Scatter/Gather TLB Regs.
* 0x00004000 MDPA Error Status & Diagnostic Control
* 0x00008000 MDPB Error Status & Diagnostic Control
* 0x000E0000 - Flash Rom Space --
* 0x000FFFFF offset address into PCI Dense Mem Space
* 0x10003F00 Interrupt Acknowledge
*
*/
/*
* Address Space Cookies
*/
#define MCPCIA_PCI_SPARSE 0x000000000UL
#define MCPCIA_PCI_DENSE 0x100000000UL
#define MCPCIA_PCI_IOSPACE 0x180000000UL
#define MCPCIA_PCI_CONF 0x1C0000000UL
#define MCPCIA_PCI_BRIDGE 0x1E0000000UL
#define MCPCIA_PCI_IACK 0x1F0000000UL
/*
* MCPCIA Bus Bridge Registers
*
* These are offsets that don't include GBUS, MID, or address space offsets.
*/
#define _MCPCIA_PCI_REV 0x000000000 /* PCI Revision Register (R) */
#define _MCPCIA_WHOAMI 0x000000040 /* PCI Who Am I (R) */
#define _MCPCIA_PCI_LAT 0x000000080 /* PCI Latency Timer (RW) */
#define _MCPCIA_CAP_CTRL 0x000000100 /* PCI Bridge Control (RW) */
#define _MCPCIA_HAE_MEM 0x000000400 /* PCI HAE Sparse Memory (RW) */
#define _MCPCIA_HAE_IO 0x000000440 /* PCI HAE Sparse I/O (RW) */
#define _MCPCIA_IACK_SC 0x000000480 /* PCI Special Cycle Ack */
#define _MCPCIA_HAE_DENSE 0x0000004C0 /* PCI HAE Dense Memory (RW) */
#define _MCPCIA_INT_CTL 0x000000500 /* PCI Interrupt Control */
#define _MCPCIA_INT_REQ 0x000000540 /* PCI Interrupt Request */
#define _MCPCIA_INT_TARG 0x000000580 /* PCI Int Tgt Devices */
#define _MCPCIA_INT_ADR 0x0000005C0 /* PCI Int Tgt Address */
#define _MCPCIA_INT_ADR_EXT 0x000000600 /* PCI Int Tgt Addr Ext */
#define _MCPCIA_INT_MASK0 0x000000640 /* PCI Int Mask 0 */
#define _MCPCIA_INT_MASK1 0x000000680 /* PCI Int Mask 1 */
#define _MCPCIA_INT_ACK0 0x100003F00 /* PCI Int Ack 0 */
#define _MCPCIA_INT_ACK1 0x100003F40 /* PCI Int Ack 1 */
#define _MCPCIA_PERF_MON 0x000000300 /* PCI Perf Monitor */
#define _MCPCIA_PERF_CONT 0x000000340 /* PCI Perf Monitor Control */
#define _MCPCIA_CAP_DIAG 0x000000700 /* MC-PCI Diagnostic Control */
#define _MCPCIA_SCRATCH0 0x000000740 /* Diag General */
#define _MCPCIA_SCRATCH1 0x000000780 /* Diag General */
#define _MCPCIA_TOM 0x0000007C0 /* Top Of Memory */
#define _MCPCIA_MC_ERR0 0x000000800 /* MC Err Info 0 */
#define _MCPCIA_MC_ERR1 0x000000840 /* MC Err Info 1 */
#define _MCPCIA_CAP_ERR 0x000000880 /* CAP Error Register */
#define _MCPCIA_PCI_ERR1 0x000001040 /* PCI Error Status */
#define _MCPCIA_MDPA_STAT 0x000004000 /* MDPA Status */
#define _MCPCIA_MDPA_SYN 0x000004040 /* MDPA Syndrome */
#define _MCPCIA_MDPA_DIAG 0x000004080 /* Diag Check MDPA */
#define _MCPCIA_MDPB_STAT 0x000008000 /* MDPB Status */
#define _MCPCIA_MDPB_SYN 0x000008040 /* MDPB Syndrome */
#define _MCPCIA_MDPB_DIAG 0x000008080 /* Diag Check MDPB */
#define _MCPCIA_SG_TBIA 0x000001300 /* Scatter/Gather TBIA */
#define _MCPCIA_HBASE 0x000001340 /* PC "Hole" Compatibility */
#define _MCPCIA_W0_BASE 0x000001400 /* Window Base 0 */
#define _MCPCIA_W0_MASK 0x000001440 /* Window Mask 0 */
#define _MCPCIA_T0_BASE 0x000001480 /* Translated Base 0 */
#define _MCPCIA_W1_BASE 0x000001500 /* Window Base 1 */
#define _MCPCIA_W1_MASK 0x000001540 /* Window Mask 1 */
#define _MCPCIA_T1_BASE 0x000001580 /* Translated Base 1 */
#define _MCPCIA_W2_BASE 0x000001600 /* Window Base 2 */
#define _MCPCIA_W2_MASK 0x000001640 /* Window Mask 2 */
#define _MCPCIA_T2_BASE 0x000001680 /* Translated Base 2 */
#define _MCPCIA_W3_BASE 0x000001700 /* Window Base 3 */
#define _MCPCIA_W3_MASK 0x000001740 /* Window Mask 3 */
#define _MCPCIA_T3_BASE 0x000001780 /* Translated Base 3 */
#define _MCPCIA_W_DAC 0x0000017C0 /* Window DAC Base */
/*
* Handier defines- uses precalculated offset in softc.
*/
#define _SYBRIDGE(ccp) ((ccp)->cc_sysbase | MCPCIA_PCI_BRIDGE)
#define MCPCIA_PCI_REV(ccp) (_SYBRIDGE(ccp) | _MCPCIA_PCI_REV)
#define MCPCIA_WHOAMI(ccp) (_SYBRIDGE(ccp) | _MCPCIA_WHOAMI)
#define MCPCIA_PCI_LAT(ccp) (_SYBRIDGE(ccp) | _MCPCIA_PCI_LAT)
#define MCPCIA_CAP_CTRL(ccp) (_SYBRIDGE(ccp) | _MCPCIA_CAP_CTRL)
#define MCPCIA_HAE_MEM(ccp) (_SYBRIDGE(ccp) | _MCPCIA_HAE_MEM)
#define MCPCIA_HAE_IO(ccp) (_SYBRIDGE(ccp) | _MCPCIA_HAE_IO)
#define MCPCIA_IACK_SC(ccp) (_SYBRIDGE(ccp) | _MCPCIA_IACK_SC)
#define MCPCIA_HAE_DENSE(ccp) (_SYBRIDGE(ccp) | _MCPCIA_HAE_DENSE)
#define MCPCIA_INT_CTL(ccp) (_SYBRIDGE(ccp) | _MCPCIA_INT_CTL)
#define MCPCIA_INT_REQ(ccp) (_SYBRIDGE(ccp) | _MCPCIA_INT_REQ)
#define MCPCIA_INT_TARG(ccp) (_SYBRIDGE(ccp) | _MCPCIA_INT_TARG)
#define MCPCIA_INT_ADR(ccp) (_SYBRIDGE(ccp) | _MCPCIA_INT_ADR)
#define MCPCIA_INT_ADR_EXT(ccp) (_SYBRIDGE(ccp) | _MCPCIA_INT_ADR_EXT)
#define MCPCIA_INT_MASK0(ccp) (_SYBRIDGE(ccp) | _MCPCIA_INT_MASK0)
#define MCPCIA_INT_MASK1(ccp) (_SYBRIDGE(ccp) | _MCPCIA_INT_MASK1)
#define MCPCIA_INT_ACK0(ccp) (_SYBRIDGE(ccp) | _MCPCIA_INT_ACK0)
#define MCPCIA_INT_ACK1(ccp) (_SYBRIDGE(ccp) | _MCPCIA_INT_ACK1)
#define MCPCIA_PERF_MON(ccp) (_SYBRIDGE(ccp) | _MCPCIA_PERF_MON)
#define MCPCIA_PERF_CONT(ccp) (_SYBRIDGE(ccp) | _MCPCIA_PERF_CONT)
#define MCPCIA_CAP_DIAG(ccp) (_SYBRIDGE(ccp) | _MCPCIA_CAP_DIAG)
#define MCPCIA_SCRATCH0(ccp) (_SYBRIDGE(ccp) | _MCPCIA_SCRATCH0)
#define MCPCIA_SCRATCH1(ccp) (_SYBRIDGE(ccp) | _MCPCIA_SCRATCH1)
#define MCPCIA_TOM(ccp) (_SYBRIDGE(ccp) | _MCPCIA_TOM)
#define MCPCIA_MC_ERR0(ccp) (_SYBRIDGE(ccp) | _MCPCIA_MC_ERR0)
#define MCPCIA_MC_ERR1(ccp) (_SYBRIDGE(ccp) | _MCPCIA_MC_ERR1)
#define MCPCIA_CAP_ERR(ccp) (_SYBRIDGE(ccp) | _MCPCIA_CAP_ERR)
#define MCPCIA_PCI_ERR1(ccp) (_SYBRIDGE(ccp) | _MCPCIA_PCI_ERR1)
#define MCPCIA_MDPA_STAT(ccp) (_SYBRIDGE(ccp) | _MCPCIA_MDPA_STAT)
#define MCPCIA_MDPA_SYN(ccp) (_SYBRIDGE(ccp) | _MCPCIA_MDPA_SYN)
#define MCPCIA_MDPA_DIAG(ccp) (_SYBRIDGE(ccp) | _MCPCIA_MDPA_DIAG)
#define MCPCIA_MDPB_STAT(ccp) (_SYBRIDGE(ccp) | _MCPCIA_MDPB_STAT)
#define MCPCIA_MDPB_SYN(ccp) (_SYBRIDGE(ccp) | _MCPCIA_MDPB_SYN)
#define MCPCIA_MDPB_DIAG(ccp) (_SYBRIDGE(ccp) | _MCPCIA_MDPB_DIAG)
#define MCPCIA_SG_TBIA(ccp) (_SYBRIDGE(ccp) | _MCPCIA_SG_TBIA)
#define MCPCIA_HBASE(ccp) (_SYBRIDGE(ccp) | _MCPCIA_HBASE)
#define MCPCIA_W0_BASE(ccp) (_SYBRIDGE(ccp) | _MCPCIA_W0_BASE)
#define MCPCIA_W0_MASK(ccp) (_SYBRIDGE(ccp) | _MCPCIA_W0_MASK)
#define MCPCIA_T0_BASE(ccp) (_SYBRIDGE(ccp) | _MCPCIA_T0_BASE)
#define MCPCIA_W1_BASE(ccp) (_SYBRIDGE(ccp) | _MCPCIA_W1_BASE)
#define MCPCIA_W1_MASK(ccp) (_SYBRIDGE(ccp) | _MCPCIA_W1_MASK)
#define MCPCIA_T1_BASE(ccp) (_SYBRIDGE(ccp) | _MCPCIA_T1_BASE)
#define MCPCIA_W2_BASE(ccp) (_SYBRIDGE(ccp) | _MCPCIA_W2_BASE)
#define MCPCIA_W2_MASK(ccp) (_SYBRIDGE(ccp) | _MCPCIA_W2_MASK)
#define MCPCIA_T2_BASE(ccp) (_SYBRIDGE(ccp) | _MCPCIA_T2_BASE)
#define MCPCIA_W3_BASE(ccp) (_SYBRIDGE(ccp) | _MCPCIA_W3_BASE)
#define MCPCIA_W3_MASK(ccp) (_SYBRIDGE(ccp) | _MCPCIA_W3_MASK)
#define MCPCIA_T3_BASE(ccp) (_SYBRIDGE(ccp) | _MCPCIA_T3_BASE)
#define MCPCIA_W_DAC(ccp) (_SYBRIDGE(ccp) | _MCPCIA_W_DAC)
/*
* This is here for what error handling will get as a collected subpacket.
*/
struct mcpcia_iodsnap {
uint64_t base_addr;
uint32_t whami;
uint32_t rsvd0;
uint32_t pci_rev;
uint32_t cap_ctrl;
uint32_t hae_mem;
uint32_t hae_io;
uint32_t int_ctl;
uint32_t int_reg;
uint32_t int_mask0;
uint32_t int_mask1;
uint32_t mc_err0;
uint32_t mc_err1;
uint32_t cap_err;
uint32_t sys_env;
uint32_t pci_err1;
uint32_t mdpa_stat;
uint32_t mdpa_syn;
uint32_t mdpb_stat;
uint32_t mdpb_syn;
uint32_t rsvd2;
uint32_t rsvd3;
uint32_t rsvd4;
};
/*
* PCI_REV Register definitions
*/
#define CAP_REV(reg) ((reg) & 0xf)
#define HORSE_REV(reg) (((reg) >> 4) & 0xf)
#define SADDLE_REV(reg) (((reg) >> 8) & 0xf)
#define SADDLE_TYPE(reg) (((reg) >> 12) & 0x3)
#define EISA_PRESENT(reg) ((reg) & (1 << 15))
#define IS_MCPCIA_MAGIC(reg) (((reg) & 0xffff0000) == 0x6000000)
/*
* WHOAMI Register definitions
*
* The Device ID is an echo of the MID of the CPU reading this register-
* cheezy way to figure out who you are (ask someone else!).
*/
#define MCBUS_CPU_MID(x) ((x) & 0x7)
#define MCBUS_CPU_INFO(x) (((x) >> 6) & 0xff)
#define CPU_Fill_Err 0x80
#define CPU_DTAG_Perr 0x40
#define CPU_RevMask 0x38
#define CPU_RevShift 3
#define CPU_BCacheMask 0x3
#define CPU_BCache_0MB 0
#define CPU_BCache_1MB 1
#define CPU_BCache_2MB 2
#define CPU_BCache_4MB 3
/*
* PCI Latency Register Definitions
*/
#define PCI_LAT_SHIFT 8 /* it's in the 2nd byte. */
/*
* CAP Control Register Definitions
*/
#define CAP_LED_ON 0x00000001 /* Selftest LED passed */
#define CAP_EV56_BW_EN 0x00000002 /* BW Enables (EV56, EV6 only) */
#define CAP_DLY_RD_EN 0x00000010 /* PCI Delayed Reads Enabled */
#define CAP_MEM_EN 0x00000020 /* Respond to PCI transactions */
#define CAP_REQ64_EN 0x00000040 /* Request 64 bit data transactions */
#define CAP_ACK64_EN 0x00000080 /* Respond to 64 bit data "" */
#define CAP_ADR_PAR_EN 0x00000100 /* Check PCI address Parity */
#define CAP_MC_CA_PAR 0x00000200 /* Check MC bus CMD/Address Parity */
#define CAP_MC_NXM_EN 0x00000400 /* Check for MC NXM */
#define CAP_BUS_MON 0x00000800 /* Check for PCI errs (as bystander) */
/* bits 19:16 control number of pending write transactions */
#define SHORT 0
#define MED 1
#define LONG 2
#define CAP_MEMRD_PREFETCH_SHIFT 20
#define CAP_MEMRDLN_PREFETCH_SHIFT 22
#define CAP_MEMRDMULT_PREFETCH_SHIFT 24
#define CAP_PARTIAL_WRITE (1 << 26)
#define CAP_ARB_BPRI 0x00000000 /* Bridge Priority Arb */
#define CAP_ARB_RROBIN 0x40000000 /* "" Round Robin */
#define CAP_ARB_RROBIN1 0x80000000 /* "" Round Robin #1 */
/*
* Diagnostic Register Bits
*/
/* CAP_DIAG register */
#define CAP_DIAG_PCIRESET 0x1 /*
* WriteOnly. Assert 1 for 100usec min.,
* then write zero. NOTE: deadlocks
* exist in h/w if anything but this
* register is accessed while reset
* is asserted.
*/
#define CAP_DIAG_MC_ADRPE (1<<30) /* Invert MC Bus Address/Parity */
#define CAP_DIAG_PCI_ADRPE (1<<31) /* Force bad PCI parity (low 32) */
/* MDPA_DIAG or MDPB_DIAG registers */
#define MDPX_ECC_ENA (1<<28) /* Enable ECC on MC Bus (default 1) */
#define MDPX_PAR_ENA (1<<29) /* Enable Parity on PCI (default 0) */
#define MDPX_DIAG_FPE_PCI (1<<30) /* Force PCI parity error */
#define MDPX_DIAG_USE_CHK (1<<31) /*
* When set, DMA write cycles use the
* value in the low 8 bits of this
* register (MDPA or MDPB) as ECC
* sent onto main memory.
*/
/*
* Interrupt Specific bits...
*
* Mostly we don't have to mess with any of the interrupt specific registers
* as the SRM has set most of this pretty complex stuff up for us.
*
* However, to enable specific interrupts, we need to set some bits
* in imask0 if we want to have them vectored to PALcode for appropriate
* dispatch.
*/
/*
* bits 0-15 correspond to 4 slots (time 4 buspins) for each PCI bus.
* bit 16 is the NCR810 onboard SCSI interrupt.
* bits 19-20 are reserved.
*/
#define MCPCIA_I2C_CTRL_INTR (1<<17)
#define MCPCIA_I2C_CTRL_BUS_ERR (1<<18)
#define MCPCIA_8259_NMI_INTR (1<<21)
#define MCPCIA_SOFT_ERR_INTR (1<<22)
#define MCPCIA_HARD_ERR_INTR (1<<23)
#ifdef YET
#define MCPCIA_GEN_IENABL \
(MCPCIA_I2C_CTRL_BUS_ERR|MCPCIA_SOFT_ERR_INTR|MCPCIA_HARD_ERR_INTR)
#else
#define MCPCIA_GEN_IENABL \
(MCPCIA_SOFT_ERR_INTR|MCPCIA_HARD_ERR_INTR)
#endif
/*
* DMA Address Specific bits...
*/
#define MCPCIA_WBASE_EN 0x1
#define MCPCIA_WBASE_SG 0x2
#define MCPCIA_WBASE_DAC 0x8
#define MCPCIA_WBASE_BSHIFT 20
#define MCPCIA_WMASK_1M 0x00000000
#define MCPCIA_WMASK_2M 0x00100000
#define MCPCIA_WMASK_4M 0x00300000
#define MCPCIA_WMASK_8M 0x00700000
#define MCPCIA_WMASK_16M 0x00f00000
#define MCPCIA_WMASK_32M 0x01f00000
#define MCPCIA_WMASK_64M 0x03f00000
#define MCPCIA_WMASK_128M 0x07f00000
#define MCPCIA_WMASK_256M 0x0ff00000
#define MCPCIA_WMASK_512M 0x1ff00000
#define MCPCIA_WMASK_1G 0x3ff00000
#define MCPCIA_WMASK_2G 0x7ff00000
#define MCPCIA_WMASK_4G 0xfff00000
/*
* The WBASEX register contains bits 39:10 of a physical address
* shifted to bits 31:2 of this 32 bit register. Namely, shifted
* right by 8 bits.
*/
#define MCPCIA_TBASEX_SHIFT 8