380 lines
11 KiB
C
380 lines
11 KiB
C
#ifndef __ALPHA_MCPCIA__H__
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#define __ALPHA_MCPCIA__H__
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/* Define to experiment with fitting everything into one 128MB HAE window.
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One window per bus, that is. */
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#define MCPCIA_ONE_HAE_WINDOW 1
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#include <linux/types.h>
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#include <linux/pci.h>
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#include <asm/compiler.h>
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/*
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* MCPCIA is the internal name for a core logic chipset which provides
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* PCI access for the RAWHIDE family of systems.
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*
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* This file is based on:
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*
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* RAWHIDE System Programmer's Manual
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* 16-May-96
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* Rev. 1.4
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*
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*/
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/*------------------------------------------------------------------------**
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** **
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** I/O procedures **
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** **
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** inport[b|w|t|l], outport[b|w|t|l] 8:16:24:32 IO xfers **
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** inportbxt: 8 bits only **
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** inport: alias of inportw **
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** outport: alias of outportw **
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** **
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** inmem[b|w|t|l], outmem[b|w|t|l] 8:16:24:32 ISA memory xfers **
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** inmembxt: 8 bits only **
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** inmem: alias of inmemw **
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** outmem: alias of outmemw **
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** **
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**------------------------------------------------------------------------*/
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/* MCPCIA ADDRESS BIT DEFINITIONS
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*
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* 3333 3333 3322 2222 2222 1111 1111 11
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* 9876 5432 1098 7654 3210 9876 5432 1098 7654 3210
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* ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
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* 1 000
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* ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
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* | |\|
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* | Byte Enable --+ |
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* | Transfer Length --+
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* +-- IO space, not cached
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*
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* Byte Transfer
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* Enable Length Transfer Byte Address
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* adr<6:5> adr<4:3> Length Enable Adder
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* ---------------------------------------------
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* 00 00 Byte 1110 0x000
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* 01 00 Byte 1101 0x020
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* 10 00 Byte 1011 0x040
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* 11 00 Byte 0111 0x060
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*
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* 00 01 Word 1100 0x008
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* 01 01 Word 1001 0x028 <= Not supported in this code.
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* 10 01 Word 0011 0x048
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*
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* 00 10 Tribyte 1000 0x010
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* 01 10 Tribyte 0001 0x030
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*
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* 10 11 Longword 0000 0x058
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*
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* Note that byte enables are asserted low.
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*
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*/
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#define MCPCIA_MID(m) ((unsigned long)(m) << 33)
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/* Dodge has PCI0 and PCI1 at MID 4 and 5 respectively.
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Durango adds PCI2 and PCI3 at MID 6 and 7 respectively. */
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#define MCPCIA_HOSE2MID(h) ((h) + 4)
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#define MCPCIA_MEM_MASK 0x07ffffff /* SPARSE Mem region mask is 27 bits */
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/*
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* Memory spaces:
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*/
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#define MCPCIA_SPARSE(m) (IDENT_ADDR + 0xf000000000UL + MCPCIA_MID(m))
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#define MCPCIA_DENSE(m) (IDENT_ADDR + 0xf100000000UL + MCPCIA_MID(m))
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#define MCPCIA_IO(m) (IDENT_ADDR + 0xf180000000UL + MCPCIA_MID(m))
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#define MCPCIA_CONF(m) (IDENT_ADDR + 0xf1c0000000UL + MCPCIA_MID(m))
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#define MCPCIA_CSR(m) (IDENT_ADDR + 0xf1e0000000UL + MCPCIA_MID(m))
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#define MCPCIA_IO_IACK(m) (IDENT_ADDR + 0xf1f0000000UL + MCPCIA_MID(m))
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#define MCPCIA_DENSE_IO(m) (IDENT_ADDR + 0xe1fc000000UL + MCPCIA_MID(m))
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#define MCPCIA_DENSE_CONF(m) (IDENT_ADDR + 0xe1fe000000UL + MCPCIA_MID(m))
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/*
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* General Registers
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*/
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#define MCPCIA_REV(m) (MCPCIA_CSR(m) + 0x000)
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#define MCPCIA_WHOAMI(m) (MCPCIA_CSR(m) + 0x040)
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#define MCPCIA_PCI_LAT(m) (MCPCIA_CSR(m) + 0x080)
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#define MCPCIA_CAP_CTRL(m) (MCPCIA_CSR(m) + 0x100)
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#define MCPCIA_HAE_MEM(m) (MCPCIA_CSR(m) + 0x400)
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#define MCPCIA_HAE_IO(m) (MCPCIA_CSR(m) + 0x440)
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#define _MCPCIA_IACK_SC(m) (MCPCIA_CSR(m) + 0x480)
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#define MCPCIA_HAE_DENSE(m) (MCPCIA_CSR(m) + 0x4C0)
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/*
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* Interrupt Control registers
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*/
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#define MCPCIA_INT_CTL(m) (MCPCIA_CSR(m) + 0x500)
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#define MCPCIA_INT_REQ(m) (MCPCIA_CSR(m) + 0x540)
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#define MCPCIA_INT_TARG(m) (MCPCIA_CSR(m) + 0x580)
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#define MCPCIA_INT_ADR(m) (MCPCIA_CSR(m) + 0x5C0)
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#define MCPCIA_INT_ADR_EXT(m) (MCPCIA_CSR(m) + 0x600)
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#define MCPCIA_INT_MASK0(m) (MCPCIA_CSR(m) + 0x640)
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#define MCPCIA_INT_MASK1(m) (MCPCIA_CSR(m) + 0x680)
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#define MCPCIA_INT_ACK0(m) (MCPCIA_CSR(m) + 0x10003f00)
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#define MCPCIA_INT_ACK1(m) (MCPCIA_CSR(m) + 0x10003f40)
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/*
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* Performance Monitor registers
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*/
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#define MCPCIA_PERF_MON(m) (MCPCIA_CSR(m) + 0x300)
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#define MCPCIA_PERF_CONT(m) (MCPCIA_CSR(m) + 0x340)
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/*
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* Diagnostic Registers
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*/
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#define MCPCIA_CAP_DIAG(m) (MCPCIA_CSR(m) + 0x700)
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#define MCPCIA_TOP_OF_MEM(m) (MCPCIA_CSR(m) + 0x7C0)
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/*
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* Error registers
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*/
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#define MCPCIA_MC_ERR0(m) (MCPCIA_CSR(m) + 0x800)
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#define MCPCIA_MC_ERR1(m) (MCPCIA_CSR(m) + 0x840)
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#define MCPCIA_CAP_ERR(m) (MCPCIA_CSR(m) + 0x880)
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#define MCPCIA_PCI_ERR1(m) (MCPCIA_CSR(m) + 0x1040)
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#define MCPCIA_MDPA_STAT(m) (MCPCIA_CSR(m) + 0x4000)
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#define MCPCIA_MDPA_SYN(m) (MCPCIA_CSR(m) + 0x4040)
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#define MCPCIA_MDPA_DIAG(m) (MCPCIA_CSR(m) + 0x4080)
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#define MCPCIA_MDPB_STAT(m) (MCPCIA_CSR(m) + 0x8000)
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#define MCPCIA_MDPB_SYN(m) (MCPCIA_CSR(m) + 0x8040)
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#define MCPCIA_MDPB_DIAG(m) (MCPCIA_CSR(m) + 0x8080)
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/*
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* PCI Address Translation Registers.
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*/
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#define MCPCIA_SG_TBIA(m) (MCPCIA_CSR(m) + 0x1300)
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#define MCPCIA_HBASE(m) (MCPCIA_CSR(m) + 0x1340)
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#define MCPCIA_W0_BASE(m) (MCPCIA_CSR(m) + 0x1400)
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#define MCPCIA_W0_MASK(m) (MCPCIA_CSR(m) + 0x1440)
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#define MCPCIA_T0_BASE(m) (MCPCIA_CSR(m) + 0x1480)
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#define MCPCIA_W1_BASE(m) (MCPCIA_CSR(m) + 0x1500)
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#define MCPCIA_W1_MASK(m) (MCPCIA_CSR(m) + 0x1540)
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#define MCPCIA_T1_BASE(m) (MCPCIA_CSR(m) + 0x1580)
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#define MCPCIA_W2_BASE(m) (MCPCIA_CSR(m) + 0x1600)
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#define MCPCIA_W2_MASK(m) (MCPCIA_CSR(m) + 0x1640)
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#define MCPCIA_T2_BASE(m) (MCPCIA_CSR(m) + 0x1680)
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#define MCPCIA_W3_BASE(m) (MCPCIA_CSR(m) + 0x1700)
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#define MCPCIA_W3_MASK(m) (MCPCIA_CSR(m) + 0x1740)
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#define MCPCIA_T3_BASE(m) (MCPCIA_CSR(m) + 0x1780)
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/* Hack! Only words for bus 0. */
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#ifndef MCPCIA_ONE_HAE_WINDOW
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#define MCPCIA_HAE_ADDRESS MCPCIA_HAE_MEM(4)
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#endif
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#define MCPCIA_IACK_SC _MCPCIA_IACK_SC(4)
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/*
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* The canonical non-remaped I/O and MEM addresses have these values
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* subtracted out. This is arranged so that folks manipulating ISA
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* devices can use their familiar numbers and have them map to bus 0.
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*/
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#define MCPCIA_IO_BIAS MCPCIA_IO(4)
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#define MCPCIA_MEM_BIAS MCPCIA_DENSE(4)
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/* Offset between ram physical addresses and pci64 DAC bus addresses. */
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#define MCPCIA_DAC_OFFSET (1UL << 40)
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/*
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* Data structure for handling MCPCIA machine checks:
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*/
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struct el_MCPCIA_uncorrected_frame_mcheck {
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struct el_common header;
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struct el_common_EV5_uncorrectable_mcheck procdata;
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};
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#ifdef __KERNEL__
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#ifndef __EXTERN_INLINE
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#define __EXTERN_INLINE extern inline
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#define __IO_EXTERN_INLINE
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#endif
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/*
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* I/O functions:
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*
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* MCPCIA, the RAWHIDE family PCI/memory support chipset for the EV5 (21164)
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* and EV56 (21164a) processors, can use either a sparse address mapping
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* scheme, or the so-called byte-word PCI address space, to get at PCI memory
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* and I/O.
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*
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* Unfortunately, we can't use BWIO with EV5, so for now, we always use SPARSE.
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*/
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/*
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* Memory functions. 64-bit and 32-bit accesses are done through
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* dense memory space, everything else through sparse space.
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*
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* For reading and writing 8 and 16 bit quantities we need to
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* go through one of the three sparse address mapping regions
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* and use the HAE_MEM CSR to provide some bits of the address.
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* The following few routines use only sparse address region 1
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* which gives 1Gbyte of accessible space which relates exactly
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* to the amount of PCI memory mapping *into* system address space.
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* See p 6-17 of the specification but it looks something like this:
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*
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* 21164 Address:
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*
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* 3 2 1
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* 9876543210987654321098765432109876543210
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* 1ZZZZ0.PCI.QW.Address............BBLL
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*
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* ZZ = SBZ
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* BB = Byte offset
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* LL = Transfer length
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*
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* PCI Address:
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*
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* 3 2 1
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* 10987654321098765432109876543210
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* HHH....PCI.QW.Address........ 00
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*
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* HHH = 31:29 HAE_MEM CSR
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*
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*/
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#define vip volatile int __force *
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#define vuip volatile unsigned int __force *
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#ifdef MCPCIA_ONE_HAE_WINDOW
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#define MCPCIA_FROB_MMIO \
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if (__mcpcia_is_mmio(hose)) { \
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set_hae(hose & 0xffffffff); \
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hose = hose - MCPCIA_DENSE(4) + MCPCIA_SPARSE(4); \
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}
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#else
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#define MCPCIA_FROB_MMIO \
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if (__mcpcia_is_mmio(hose)) { \
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hose = hose - MCPCIA_DENSE(4) + MCPCIA_SPARSE(4); \
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}
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#endif
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static inline int __mcpcia_is_mmio(unsigned long addr)
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{
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return (addr & 0x80000000UL) == 0;
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}
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__EXTERN_INLINE unsigned int mcpcia_ioread8(void __iomem *xaddr)
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{
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unsigned long addr = (unsigned long)xaddr & MCPCIA_MEM_MASK;
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unsigned long hose = (unsigned long)xaddr & ~MCPCIA_MEM_MASK;
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unsigned long result;
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MCPCIA_FROB_MMIO;
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result = *(vip) ((addr << 5) + hose + 0x00);
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return __kernel_extbl(result, addr & 3);
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}
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__EXTERN_INLINE void mcpcia_iowrite8(u8 b, void __iomem *xaddr)
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{
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unsigned long addr = (unsigned long)xaddr & MCPCIA_MEM_MASK;
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unsigned long hose = (unsigned long)xaddr & ~MCPCIA_MEM_MASK;
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unsigned long w;
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MCPCIA_FROB_MMIO;
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w = __kernel_insbl(b, addr & 3);
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*(vuip) ((addr << 5) + hose + 0x00) = w;
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}
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__EXTERN_INLINE unsigned int mcpcia_ioread16(void __iomem *xaddr)
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{
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unsigned long addr = (unsigned long)xaddr & MCPCIA_MEM_MASK;
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unsigned long hose = (unsigned long)xaddr & ~MCPCIA_MEM_MASK;
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unsigned long result;
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MCPCIA_FROB_MMIO;
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result = *(vip) ((addr << 5) + hose + 0x08);
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return __kernel_extwl(result, addr & 3);
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}
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__EXTERN_INLINE void mcpcia_iowrite16(u16 b, void __iomem *xaddr)
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{
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unsigned long addr = (unsigned long)xaddr & MCPCIA_MEM_MASK;
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unsigned long hose = (unsigned long)xaddr & ~MCPCIA_MEM_MASK;
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unsigned long w;
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MCPCIA_FROB_MMIO;
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w = __kernel_inswl(b, addr & 3);
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*(vuip) ((addr << 5) + hose + 0x08) = w;
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}
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__EXTERN_INLINE unsigned int mcpcia_ioread32(void __iomem *xaddr)
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{
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unsigned long addr = (unsigned long)xaddr;
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if (!__mcpcia_is_mmio(addr))
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addr = ((addr & 0xffff) << 5) + (addr & ~0xfffful) + 0x18;
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return *(vuip)addr;
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}
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__EXTERN_INLINE void mcpcia_iowrite32(u32 b, void __iomem *xaddr)
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{
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unsigned long addr = (unsigned long)xaddr;
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if (!__mcpcia_is_mmio(addr))
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addr = ((addr & 0xffff) << 5) + (addr & ~0xfffful) + 0x18;
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*(vuip)addr = b;
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}
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__EXTERN_INLINE void __iomem *mcpcia_ioportmap(unsigned long addr)
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{
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return (void __iomem *)(addr + MCPCIA_IO_BIAS);
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}
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__EXTERN_INLINE void __iomem *mcpcia_ioremap(unsigned long addr,
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unsigned long size)
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{
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return (void __iomem *)(addr + MCPCIA_MEM_BIAS);
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}
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__EXTERN_INLINE int mcpcia_is_ioaddr(unsigned long addr)
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{
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return addr >= MCPCIA_SPARSE(0);
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}
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__EXTERN_INLINE int mcpcia_is_mmio(const volatile void __iomem *xaddr)
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{
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unsigned long addr = (unsigned long) xaddr;
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return __mcpcia_is_mmio(addr);
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}
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#undef MCPCIA_FROB_MMIO
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#undef vip
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#undef vuip
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#undef __IO_PREFIX
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#define __IO_PREFIX mcpcia
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#define mcpcia_trivial_rw_bw 2
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#define mcpcia_trivial_rw_lq 1
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#define mcpcia_trivial_io_bw 0
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#define mcpcia_trivial_io_lq 0
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#define mcpcia_trivial_iounmap 1
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#include <asm/io_trivial.h>
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#ifdef __IO_EXTERN_INLINE
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#undef __EXTERN_INLINE
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#undef __IO_EXTERN_INLINE
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#endif
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#endif /* __KERNEL__ */
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#endif /* __ALPHA_MCPCIA__H__ */
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