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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ALPHA_MCPCIA__H__
#define __ALPHA_MCPCIA__H__
/* Define to experiment with fitting everything into one 128MB HAE window.
One window per bus, that is. */
#define MCPCIA_ONE_HAE_WINDOW 1
#include <linux/types.h>
#include <asm/compiler.h>
#include <asm/mce.h>
/*
* MCPCIA is the internal name for a core logic chipset which provides
* PCI access for the RAWHIDE family of systems.
*
* This file is based on:
*
* RAWHIDE System Programmer's Manual
* 16-May-96
* Rev. 1.4
*
*/
/*------------------------------------------------------------------------**
** **
** I/O procedures **
** **
** inport[b|w|t|l], outport[b|w|t|l] 8:16:24:32 IO xfers **
** inportbxt: 8 bits only **
** inport: alias of inportw **
** outport: alias of outportw **
** **
** inmem[b|w|t|l], outmem[b|w|t|l] 8:16:24:32 ISA memory xfers **
** inmembxt: 8 bits only **
** inmem: alias of inmemw **
** outmem: alias of outmemw **
** **
**------------------------------------------------------------------------*/
/* MCPCIA ADDRESS BIT DEFINITIONS
*
* 3333 3333 3322 2222 2222 1111 1111 11
* 9876 5432 1098 7654 3210 9876 5432 1098 7654 3210
* ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
* 1 000
* ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
* | |\|
* | Byte Enable --+ |
* | Transfer Length --+
* +-- IO space, not cached
*
* Byte Transfer
* Enable Length Transfer Byte Address
* adr<6:5> adr<4:3> Length Enable Adder
* ---------------------------------------------
* 00 00 Byte 1110 0x000
* 01 00 Byte 1101 0x020
* 10 00 Byte 1011 0x040
* 11 00 Byte 0111 0x060
*
* 00 01 Word 1100 0x008
* 01 01 Word 1001 0x028 <= Not supported in this code.
* 10 01 Word 0011 0x048
*
* 00 10 Tribyte 1000 0x010
* 01 10 Tribyte 0001 0x030
*
* 10 11 Longword 0000 0x058
*
* Note that byte enables are asserted low.
*
*/
#define MCPCIA_MAX_HOSES 4
#define MCPCIA_MID(m) ((unsigned long)(m) << 33)
/* Dodge has PCI0 and PCI1 at MID 4 and 5 respectively.
Durango adds PCI2 and PCI3 at MID 6 and 7 respectively. */
#define MCPCIA_HOSE2MID(h) ((h) + 4)
#define MCPCIA_MEM_MASK 0x07ffffff /* SPARSE Mem region mask is 27 bits */
/*
* Memory spaces:
*/
#define MCPCIA_SPARSE(m) (IDENT_ADDR + 0xf000000000UL + MCPCIA_MID(m))
#define MCPCIA_DENSE(m) (IDENT_ADDR + 0xf100000000UL + MCPCIA_MID(m))
#define MCPCIA_IO(m) (IDENT_ADDR + 0xf180000000UL + MCPCIA_MID(m))
#define MCPCIA_CONF(m) (IDENT_ADDR + 0xf1c0000000UL + MCPCIA_MID(m))
#define MCPCIA_CSR(m) (IDENT_ADDR + 0xf1e0000000UL + MCPCIA_MID(m))
#define MCPCIA_IO_IACK(m) (IDENT_ADDR + 0xf1f0000000UL + MCPCIA_MID(m))
#define MCPCIA_DENSE_IO(m) (IDENT_ADDR + 0xe1fc000000UL + MCPCIA_MID(m))
#define MCPCIA_DENSE_CONF(m) (IDENT_ADDR + 0xe1fe000000UL + MCPCIA_MID(m))
/*
* General Registers
*/
#define MCPCIA_REV(m) (MCPCIA_CSR(m) + 0x000)
#define MCPCIA_WHOAMI(m) (MCPCIA_CSR(m) + 0x040)
#define MCPCIA_PCI_LAT(m) (MCPCIA_CSR(m) + 0x080)
#define MCPCIA_CAP_CTRL(m) (MCPCIA_CSR(m) + 0x100)
#define MCPCIA_HAE_MEM(m) (MCPCIA_CSR(m) + 0x400)
#define MCPCIA_HAE_IO(m) (MCPCIA_CSR(m) + 0x440)
#define _MCPCIA_IACK_SC(m) (MCPCIA_CSR(m) + 0x480)
#define MCPCIA_HAE_DENSE(m) (MCPCIA_CSR(m) + 0x4C0)
/*
* Interrupt Control registers
*/
#define MCPCIA_INT_CTL(m) (MCPCIA_CSR(m) + 0x500)
#define MCPCIA_INT_REQ(m) (MCPCIA_CSR(m) + 0x540)
#define MCPCIA_INT_TARG(m) (MCPCIA_CSR(m) + 0x580)
#define MCPCIA_INT_ADR(m) (MCPCIA_CSR(m) + 0x5C0)
#define MCPCIA_INT_ADR_EXT(m) (MCPCIA_CSR(m) + 0x600)
#define MCPCIA_INT_MASK0(m) (MCPCIA_CSR(m) + 0x640)
#define MCPCIA_INT_MASK1(m) (MCPCIA_CSR(m) + 0x680)
#define MCPCIA_INT_ACK0(m) (MCPCIA_CSR(m) + 0x10003f00)
#define MCPCIA_INT_ACK1(m) (MCPCIA_CSR(m) + 0x10003f40)
/*
* Performance Monitor registers
*/
#define MCPCIA_PERF_MON(m) (MCPCIA_CSR(m) + 0x300)
#define MCPCIA_PERF_CONT(m) (MCPCIA_CSR(m) + 0x340)
/*
* Diagnostic Registers
*/
#define MCPCIA_CAP_DIAG(m) (MCPCIA_CSR(m) + 0x700)
#define MCPCIA_TOP_OF_MEM(m) (MCPCIA_CSR(m) + 0x7C0)
/*
* Error registers
*/
#define MCPCIA_MC_ERR0(m) (MCPCIA_CSR(m) + 0x800)
#define MCPCIA_MC_ERR1(m) (MCPCIA_CSR(m) + 0x840)
#define MCPCIA_CAP_ERR(m) (MCPCIA_CSR(m) + 0x880)
#define MCPCIA_PCI_ERR1(m) (MCPCIA_CSR(m) + 0x1040)
#define MCPCIA_MDPA_STAT(m) (MCPCIA_CSR(m) + 0x4000)
#define MCPCIA_MDPA_SYN(m) (MCPCIA_CSR(m) + 0x4040)
#define MCPCIA_MDPA_DIAG(m) (MCPCIA_CSR(m) + 0x4080)
#define MCPCIA_MDPB_STAT(m) (MCPCIA_CSR(m) + 0x8000)
#define MCPCIA_MDPB_SYN(m) (MCPCIA_CSR(m) + 0x8040)
#define MCPCIA_MDPB_DIAG(m) (MCPCIA_CSR(m) + 0x8080)
/*
* PCI Address Translation Registers.
*/
#define MCPCIA_SG_TBIA(m) (MCPCIA_CSR(m) + 0x1300)
#define MCPCIA_HBASE(m) (MCPCIA_CSR(m) + 0x1340)
#define MCPCIA_W0_BASE(m) (MCPCIA_CSR(m) + 0x1400)
#define MCPCIA_W0_MASK(m) (MCPCIA_CSR(m) + 0x1440)
#define MCPCIA_T0_BASE(m) (MCPCIA_CSR(m) + 0x1480)
#define MCPCIA_W1_BASE(m) (MCPCIA_CSR(m) + 0x1500)
#define MCPCIA_W1_MASK(m) (MCPCIA_CSR(m) + 0x1540)
#define MCPCIA_T1_BASE(m) (MCPCIA_CSR(m) + 0x1580)
#define MCPCIA_W2_BASE(m) (MCPCIA_CSR(m) + 0x1600)
#define MCPCIA_W2_MASK(m) (MCPCIA_CSR(m) + 0x1640)
#define MCPCIA_T2_BASE(m) (MCPCIA_CSR(m) + 0x1680)
#define MCPCIA_W3_BASE(m) (MCPCIA_CSR(m) + 0x1700)
#define MCPCIA_W3_MASK(m) (MCPCIA_CSR(m) + 0x1740)
#define MCPCIA_T3_BASE(m) (MCPCIA_CSR(m) + 0x1780)
/* Hack! Only words for bus 0. */
#ifndef MCPCIA_ONE_HAE_WINDOW
#define MCPCIA_HAE_ADDRESS MCPCIA_HAE_MEM(4)
#endif
#define MCPCIA_IACK_SC _MCPCIA_IACK_SC(4)
/*
* The canonical non-remaped I/O and MEM addresses have these values
* subtracted out. This is arranged so that folks manipulating ISA
* devices can use their familiar numbers and have them map to bus 0.
*/
#define MCPCIA_IO_BIAS MCPCIA_IO(4)
#define MCPCIA_MEM_BIAS MCPCIA_DENSE(4)
/* Offset between ram physical addresses and pci64 DAC bus addresses. */
#define MCPCIA_DAC_OFFSET (1UL << 40)
/*
* Data structure for handling MCPCIA machine checks:
*/
struct el_MCPCIA_uncorrected_frame_mcheck {
struct el_common header;
struct el_common_EV5_uncorrectable_mcheck procdata;
};
#ifdef __KERNEL__
#ifndef __EXTERN_INLINE
#define __EXTERN_INLINE extern inline
#define __IO_EXTERN_INLINE
#endif
/*
* I/O functions:
*
* MCPCIA, the RAWHIDE family PCI/memory support chipset for the EV5 (21164)
* and EV56 (21164a) processors, can use either a sparse address mapping
* scheme, or the so-called byte-word PCI address space, to get at PCI memory
* and I/O.
*
* Unfortunately, we can't use BWIO with EV5, so for now, we always use SPARSE.
*/
/*
* Memory functions. 64-bit and 32-bit accesses are done through
* dense memory space, everything else through sparse space.
*
* For reading and writing 8 and 16 bit quantities we need to
* go through one of the three sparse address mapping regions
* and use the HAE_MEM CSR to provide some bits of the address.
* The following few routines use only sparse address region 1
* which gives 1Gbyte of accessible space which relates exactly
* to the amount of PCI memory mapping *into* system address space.
* See p 6-17 of the specification but it looks something like this:
*
* 21164 Address:
*
* 3 2 1
* 9876543210987654321098765432109876543210
* 1ZZZZ0.PCI.QW.Address............BBLL
*
* ZZ = SBZ
* BB = Byte offset
* LL = Transfer length
*
* PCI Address:
*
* 3 2 1
* 10987654321098765432109876543210
* HHH....PCI.QW.Address........ 00
*
* HHH = 31:29 HAE_MEM CSR
*
*/
#define vip volatile int __force *
#define vuip volatile unsigned int __force *
#define vulp volatile unsigned long __force *
#ifndef MCPCIA_ONE_HAE_WINDOW
#define MCPCIA_FROB_MMIO \
if (__mcpcia_is_mmio(hose)) { \
set_hae(hose & 0xffffffff); \
hose = hose - MCPCIA_DENSE(4) + MCPCIA_SPARSE(4); \
}
#else
#define MCPCIA_FROB_MMIO \
if (__mcpcia_is_mmio(hose)) { \
hose = hose - MCPCIA_DENSE(4) + MCPCIA_SPARSE(4); \
}
#endif
extern inline int __mcpcia_is_mmio(unsigned long addr)
{
return (addr & 0x80000000UL) == 0;
}
__EXTERN_INLINE u8 mcpcia_ioread8(const void __iomem *xaddr)
{
unsigned long addr = (unsigned long)xaddr & MCPCIA_MEM_MASK;
unsigned long hose = (unsigned long)xaddr & ~MCPCIA_MEM_MASK;
unsigned long result;
MCPCIA_FROB_MMIO;
result = *(vip) ((addr << 5) + hose + 0x00);
return __kernel_extbl(result, addr & 3);
}
__EXTERN_INLINE void mcpcia_iowrite8(u8 b, void __iomem *xaddr)
{
unsigned long addr = (unsigned long)xaddr & MCPCIA_MEM_MASK;
unsigned long hose = (unsigned long)xaddr & ~MCPCIA_MEM_MASK;
unsigned long w;
MCPCIA_FROB_MMIO;
w = __kernel_insbl(b, addr & 3);
*(vuip) ((addr << 5) + hose + 0x00) = w;
}
__EXTERN_INLINE u16 mcpcia_ioread16(const void __iomem *xaddr)
{
unsigned long addr = (unsigned long)xaddr & MCPCIA_MEM_MASK;
unsigned long hose = (unsigned long)xaddr & ~MCPCIA_MEM_MASK;
unsigned long result;
MCPCIA_FROB_MMIO;
result = *(vip) ((addr << 5) + hose + 0x08);
return __kernel_extwl(result, addr & 3);
}
__EXTERN_INLINE void mcpcia_iowrite16(u16 b, void __iomem *xaddr)
{
unsigned long addr = (unsigned long)xaddr & MCPCIA_MEM_MASK;
unsigned long hose = (unsigned long)xaddr & ~MCPCIA_MEM_MASK;
unsigned long w;
MCPCIA_FROB_MMIO;
w = __kernel_inswl(b, addr & 3);
*(vuip) ((addr << 5) + hose + 0x08) = w;
}
__EXTERN_INLINE u32 mcpcia_ioread32(const void __iomem *xaddr)
{
unsigned long addr = (unsigned long)xaddr;
if (!__mcpcia_is_mmio(addr))
addr = ((addr & 0xffff) << 5) + (addr & ~0xfffful) + 0x18;
return *(vuip)addr;
}
__EXTERN_INLINE void mcpcia_iowrite32(u32 b, void __iomem *xaddr)
{
unsigned long addr = (unsigned long)xaddr;
if (!__mcpcia_is_mmio(addr))
addr = ((addr & 0xffff) << 5) + (addr & ~0xfffful) + 0x18;
*(vuip)addr = b;
}
__EXTERN_INLINE u64 mcpcia_ioread64(const void __iomem *xaddr)
{
unsigned long addr = (unsigned long)xaddr;
if (!__mcpcia_is_mmio(addr))
addr = ((addr & 0xffff) << 5) + (addr & ~0xfffful) + 0x18;
return *(vulp)addr;
}
__EXTERN_INLINE void mcpcia_iowrite64(u64 b, void __iomem *xaddr)
{
unsigned long addr = (unsigned long)xaddr;
if (!__mcpcia_is_mmio(addr))
addr = ((addr & 0xffff) << 5) + (addr & ~0xfffful) + 0x18;
*(vulp)addr = b;
}
__EXTERN_INLINE void __iomem *mcpcia_ioportmap(unsigned long addr)
{
return (void __iomem *)(addr + MCPCIA_IO_BIAS);
}
__EXTERN_INLINE void __iomem *mcpcia_ioremap(unsigned long addr,
unsigned long size)
{
return (void __iomem *)(addr + MCPCIA_MEM_BIAS);
}
__EXTERN_INLINE int mcpcia_is_ioaddr(unsigned long addr)
{
return addr >= MCPCIA_SPARSE(0);
}
__EXTERN_INLINE int mcpcia_is_mmio(const volatile void __iomem *xaddr)
{
unsigned long addr = (unsigned long) xaddr;
return __mcpcia_is_mmio(addr);
}
#undef MCPCIA_FROB_MMIO
#undef vip
#undef vuip
#undef vulp
#undef __IO_PREFIX
#define __IO_PREFIX mcpcia
#define mcpcia_trivial_rw_bw 2
#define mcpcia_trivial_rw_lq 1
#define mcpcia_trivial_io_bw 0
#define mcpcia_trivial_io_lq 0
#define mcpcia_trivial_iounmap 1
#include <asm/io_trivial.h>
#ifdef __IO_EXTERN_INLINE
#undef __EXTERN_INLINE
#undef __IO_EXTERN_INLINE
#endif
#endif /* __KERNEL__ */
#endif /* __ALPHA_MCPCIA__H__ */