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-rw-r--r--arch/alpha/include/asm/core_apecs.h534
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diff --git a/arch/alpha/include/asm/core_apecs.h b/arch/alpha/include/asm/core_apecs.h
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--- a/arch/alpha/include/asm/core_apecs.h
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-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ALPHA_APECS__H__
-#define __ALPHA_APECS__H__
-
-#include <linux/types.h>
-#include <asm/compiler.h>
-
-/*
- * APECS is the internal name for the 2107x chipset which provides
- * memory controller and PCI access for the 21064 chip based systems.
- *
- * This file is based on:
- *
- * DECchip 21071-AA and DECchip 21072-AA Core Logic Chipsets
- * Data Sheet
- *
- * EC-N0648-72
- *
- *
- * david.rusling@reo.mts.dec.com Initial Version.
- *
- */
-
-/*
- An AVANTI *might* be an XL, and an XL has only 27 bits of ISA address
- that get passed through the PCI<->ISA bridge chip. So we've gotta use
- both windows to max out the physical memory we can DMA to. Sigh...
-
- If we try a window at 0 for 1GB as a work-around, we run into conflicts
- with ISA/PCI bus memory which can't be relocated, like VGA aperture and
- BIOS ROMs. So we must put the windows high enough to avoid these areas.
-
- We put window 1 at BUS 64Mb for 64Mb, mapping physical 0 to 64Mb-1,
- and window 2 at BUS 1Gb for 1Gb, mapping physical 0 to 1Gb-1.
- Yes, this does map 0 to 64Mb-1 twice, but only window 1 will actually
- be used for that range (via virt_to_bus()).
-
- Note that we actually fudge the window 1 maximum as 48Mb instead of 64Mb,
- to keep virt_to_bus() from returning an address in the first window, for
- a data area that goes beyond the 64Mb first DMA window. Sigh...
- The fudge factor MUST match with <asm/dma.h> MAX_DMA_ADDRESS, but
- we can't just use that here, because of header file looping... :-(
-
- Window 1 will be used for all DMA from the ISA bus; yes, that does
- limit what memory an ISA floppy or sound card or Ethernet can touch, but
- it's also a known limitation on other platforms as well. We use the
- same technique that is used on INTEL platforms with similar limitation:
- set MAX_DMA_ADDRESS and clear some pages' DMAable flags during mem_init().
- We trust that any ISA bus device drivers will *always* ask for DMAable
- memory explicitly via kmalloc()/get_free_pages() flags arguments.
-
- Note that most PCI bus devices' drivers do *not* explicitly ask for
- DMAable memory; they count on being able to DMA to any memory they
- get from kmalloc()/get_free_pages(). They will also use window 1 for
- any physical memory accesses below 64Mb; the rest will be handled by
- window 2, maxing out at 1Gb of memory. I trust this is enough... :-)
-
- We hope that the area before the first window is large enough so that
- there will be no overlap at the top end (64Mb). We *must* locate the
- PCI cards' memory just below window 1, so that there's still the
- possibility of being able to access it via SPARSE space. This is
- important for cards such as the Matrox Millennium, whose Xserver
- wants to access memory-mapped registers in byte and short lengths.
-
- Note that the XL is treated differently from the AVANTI, even though
- for most other things they are identical. It didn't seem reasonable to
- make the AVANTI support pay for the limitations of the XL. It is true,
- however, that an XL kernel will run on an AVANTI without problems.
-
- %%% All of this should be obviated by the ability to route
- everything through the iommu.
-*/
-
-/*
- * 21071-DA Control and Status registers.
- * These are used for PCI memory access.
- */
-#define APECS_IOC_DCSR (IDENT_ADDR + 0x1A0000000UL)
-#define APECS_IOC_PEAR (IDENT_ADDR + 0x1A0000020UL)
-#define APECS_IOC_SEAR (IDENT_ADDR + 0x1A0000040UL)
-#define APECS_IOC_DR1 (IDENT_ADDR + 0x1A0000060UL)
-#define APECS_IOC_DR2 (IDENT_ADDR + 0x1A0000080UL)
-#define APECS_IOC_DR3 (IDENT_ADDR + 0x1A00000A0UL)
-
-#define APECS_IOC_TB1R (IDENT_ADDR + 0x1A00000C0UL)
-#define APECS_IOC_TB2R (IDENT_ADDR + 0x1A00000E0UL)
-
-#define APECS_IOC_PB1R (IDENT_ADDR + 0x1A0000100UL)
-#define APECS_IOC_PB2R (IDENT_ADDR + 0x1A0000120UL)
-
-#define APECS_IOC_PM1R (IDENT_ADDR + 0x1A0000140UL)
-#define APECS_IOC_PM2R (IDENT_ADDR + 0x1A0000160UL)
-
-#define APECS_IOC_HAXR0 (IDENT_ADDR + 0x1A0000180UL)
-#define APECS_IOC_HAXR1 (IDENT_ADDR + 0x1A00001A0UL)
-#define APECS_IOC_HAXR2 (IDENT_ADDR + 0x1A00001C0UL)
-
-#define APECS_IOC_PMLT (IDENT_ADDR + 0x1A00001E0UL)
-
-#define APECS_IOC_TLBTAG0 (IDENT_ADDR + 0x1A0000200UL)
-#define APECS_IOC_TLBTAG1 (IDENT_ADDR + 0x1A0000220UL)
-#define APECS_IOC_TLBTAG2 (IDENT_ADDR + 0x1A0000240UL)
-#define APECS_IOC_TLBTAG3 (IDENT_ADDR + 0x1A0000260UL)
-#define APECS_IOC_TLBTAG4 (IDENT_ADDR + 0x1A0000280UL)
-#define APECS_IOC_TLBTAG5 (IDENT_ADDR + 0x1A00002A0UL)
-#define APECS_IOC_TLBTAG6 (IDENT_ADDR + 0x1A00002C0UL)
-#define APECS_IOC_TLBTAG7 (IDENT_ADDR + 0x1A00002E0UL)
-
-#define APECS_IOC_TLBDATA0 (IDENT_ADDR + 0x1A0000300UL)
-#define APECS_IOC_TLBDATA1 (IDENT_ADDR + 0x1A0000320UL)
-#define APECS_IOC_TLBDATA2 (IDENT_ADDR + 0x1A0000340UL)
-#define APECS_IOC_TLBDATA3 (IDENT_ADDR + 0x1A0000360UL)
-#define APECS_IOC_TLBDATA4 (IDENT_ADDR + 0x1A0000380UL)
-#define APECS_IOC_TLBDATA5 (IDENT_ADDR + 0x1A00003A0UL)
-#define APECS_IOC_TLBDATA6 (IDENT_ADDR + 0x1A00003C0UL)
-#define APECS_IOC_TLBDATA7 (IDENT_ADDR + 0x1A00003E0UL)
-
-#define APECS_IOC_TBIA (IDENT_ADDR + 0x1A0000400UL)
-
-
-/*
- * 21071-CA Control and Status registers.
- * These are used to program memory timing,
- * configure memory and initialise the B-Cache.
- */
-#define APECS_MEM_GCR (IDENT_ADDR + 0x180000000UL)
-#define APECS_MEM_EDSR (IDENT_ADDR + 0x180000040UL)
-#define APECS_MEM_TAR (IDENT_ADDR + 0x180000060UL)
-#define APECS_MEM_ELAR (IDENT_ADDR + 0x180000080UL)
-#define APECS_MEM_EHAR (IDENT_ADDR + 0x1800000a0UL)
-#define APECS_MEM_SFT_RST (IDENT_ADDR + 0x1800000c0UL)
-#define APECS_MEM_LDxLAR (IDENT_ADDR + 0x1800000e0UL)
-#define APECS_MEM_LDxHAR (IDENT_ADDR + 0x180000100UL)
-#define APECS_MEM_GTR (IDENT_ADDR + 0x180000200UL)
-#define APECS_MEM_RTR (IDENT_ADDR + 0x180000220UL)
-#define APECS_MEM_VFPR (IDENT_ADDR + 0x180000240UL)
-#define APECS_MEM_PDLDR (IDENT_ADDR + 0x180000260UL)
-#define APECS_MEM_PDhDR (IDENT_ADDR + 0x180000280UL)
-
-/* Bank x Base Address Register */
-#define APECS_MEM_B0BAR (IDENT_ADDR + 0x180000800UL)
-#define APECS_MEM_B1BAR (IDENT_ADDR + 0x180000820UL)
-#define APECS_MEM_B2BAR (IDENT_ADDR + 0x180000840UL)
-#define APECS_MEM_B3BAR (IDENT_ADDR + 0x180000860UL)
-#define APECS_MEM_B4BAR (IDENT_ADDR + 0x180000880UL)
-#define APECS_MEM_B5BAR (IDENT_ADDR + 0x1800008A0UL)
-#define APECS_MEM_B6BAR (IDENT_ADDR + 0x1800008C0UL)
-#define APECS_MEM_B7BAR (IDENT_ADDR + 0x1800008E0UL)
-#define APECS_MEM_B8BAR (IDENT_ADDR + 0x180000900UL)
-
-/* Bank x Configuration Register */
-#define APECS_MEM_B0BCR (IDENT_ADDR + 0x180000A00UL)
-#define APECS_MEM_B1BCR (IDENT_ADDR + 0x180000A20UL)
-#define APECS_MEM_B2BCR (IDENT_ADDR + 0x180000A40UL)
-#define APECS_MEM_B3BCR (IDENT_ADDR + 0x180000A60UL)
-#define APECS_MEM_B4BCR (IDENT_ADDR + 0x180000A80UL)
-#define APECS_MEM_B5BCR (IDENT_ADDR + 0x180000AA0UL)
-#define APECS_MEM_B6BCR (IDENT_ADDR + 0x180000AC0UL)
-#define APECS_MEM_B7BCR (IDENT_ADDR + 0x180000AE0UL)
-#define APECS_MEM_B8BCR (IDENT_ADDR + 0x180000B00UL)
-
-/* Bank x Timing Register A */
-#define APECS_MEM_B0TRA (IDENT_ADDR + 0x180000C00UL)
-#define APECS_MEM_B1TRA (IDENT_ADDR + 0x180000C20UL)
-#define APECS_MEM_B2TRA (IDENT_ADDR + 0x180000C40UL)
-#define APECS_MEM_B3TRA (IDENT_ADDR + 0x180000C60UL)
-#define APECS_MEM_B4TRA (IDENT_ADDR + 0x180000C80UL)
-#define APECS_MEM_B5TRA (IDENT_ADDR + 0x180000CA0UL)
-#define APECS_MEM_B6TRA (IDENT_ADDR + 0x180000CC0UL)
-#define APECS_MEM_B7TRA (IDENT_ADDR + 0x180000CE0UL)
-#define APECS_MEM_B8TRA (IDENT_ADDR + 0x180000D00UL)
-
-/* Bank x Timing Register B */
-#define APECS_MEM_B0TRB (IDENT_ADDR + 0x180000E00UL)
-#define APECS_MEM_B1TRB (IDENT_ADDR + 0x180000E20UL)
-#define APECS_MEM_B2TRB (IDENT_ADDR + 0x180000E40UL)
-#define APECS_MEM_B3TRB (IDENT_ADDR + 0x180000E60UL)
-#define APECS_MEM_B4TRB (IDENT_ADDR + 0x180000E80UL)
-#define APECS_MEM_B5TRB (IDENT_ADDR + 0x180000EA0UL)
-#define APECS_MEM_B6TRB (IDENT_ADDR + 0x180000EC0UL)
-#define APECS_MEM_B7TRB (IDENT_ADDR + 0x180000EE0UL)
-#define APECS_MEM_B8TRB (IDENT_ADDR + 0x180000F00UL)
-
-
-/*
- * Memory spaces:
- */
-#define APECS_IACK_SC (IDENT_ADDR + 0x1b0000000UL)
-#define APECS_CONF (IDENT_ADDR + 0x1e0000000UL)
-#define APECS_IO (IDENT_ADDR + 0x1c0000000UL)
-#define APECS_SPARSE_MEM (IDENT_ADDR + 0x200000000UL)
-#define APECS_DENSE_MEM (IDENT_ADDR + 0x300000000UL)
-
-
-/*
- * Bit definitions for I/O Controller status register 0:
- */
-#define APECS_IOC_STAT0_CMD 0xf
-#define APECS_IOC_STAT0_ERR (1<<4)
-#define APECS_IOC_STAT0_LOST (1<<5)
-#define APECS_IOC_STAT0_THIT (1<<6)
-#define APECS_IOC_STAT0_TREF (1<<7)
-#define APECS_IOC_STAT0_CODE_SHIFT 8
-#define APECS_IOC_STAT0_CODE_MASK 0x7
-#define APECS_IOC_STAT0_P_NBR_SHIFT 13
-#define APECS_IOC_STAT0_P_NBR_MASK 0x7ffff
-
-#define APECS_HAE_ADDRESS APECS_IOC_HAXR1
-
-
-/*
- * Data structure for handling APECS machine checks:
- */
-
-struct el_apecs_mikasa_sysdata_mcheck
-{
- unsigned long coma_gcr;
- unsigned long coma_edsr;
- unsigned long coma_ter;
- unsigned long coma_elar;
- unsigned long coma_ehar;
- unsigned long coma_ldlr;
- unsigned long coma_ldhr;
- unsigned long coma_base0;
- unsigned long coma_base1;
- unsigned long coma_base2;
- unsigned long coma_base3;
- unsigned long coma_cnfg0;
- unsigned long coma_cnfg1;
- unsigned long coma_cnfg2;
- unsigned long coma_cnfg3;
- unsigned long epic_dcsr;
- unsigned long epic_pear;
- unsigned long epic_sear;
- unsigned long epic_tbr1;
- unsigned long epic_tbr2;
- unsigned long epic_pbr1;
- unsigned long epic_pbr2;
- unsigned long epic_pmr1;
- unsigned long epic_pmr2;
- unsigned long epic_harx1;
- unsigned long epic_harx2;
- unsigned long epic_pmlt;
- unsigned long epic_tag0;
- unsigned long epic_tag1;
- unsigned long epic_tag2;
- unsigned long epic_tag3;
- unsigned long epic_tag4;
- unsigned long epic_tag5;
- unsigned long epic_tag6;
- unsigned long epic_tag7;
- unsigned long epic_data0;
- unsigned long epic_data1;
- unsigned long epic_data2;
- unsigned long epic_data3;
- unsigned long epic_data4;
- unsigned long epic_data5;
- unsigned long epic_data6;
- unsigned long epic_data7;
-
- unsigned long pceb_vid;
- unsigned long pceb_did;
- unsigned long pceb_revision;
- unsigned long pceb_command;
- unsigned long pceb_status;
- unsigned long pceb_latency;
- unsigned long pceb_control;
- unsigned long pceb_arbcon;
- unsigned long pceb_arbpri;
-
- unsigned long esc_id;
- unsigned long esc_revision;
- unsigned long esc_int0;
- unsigned long esc_int1;
- unsigned long esc_elcr0;
- unsigned long esc_elcr1;
- unsigned long esc_last_eisa;
- unsigned long esc_nmi_stat;
-
- unsigned long pci_ir;
- unsigned long pci_imr;
- unsigned long svr_mgr;
-};
-
-/* This for the normal APECS machines. */
-struct el_apecs_sysdata_mcheck
-{
- unsigned long coma_gcr;
- unsigned long coma_edsr;
- unsigned long coma_ter;
- unsigned long coma_elar;
- unsigned long coma_ehar;
- unsigned long coma_ldlr;
- unsigned long coma_ldhr;
- unsigned long coma_base0;
- unsigned long coma_base1;
- unsigned long coma_base2;
- unsigned long coma_cnfg0;
- unsigned long coma_cnfg1;
- unsigned long coma_cnfg2;
- unsigned long epic_dcsr;
- unsigned long epic_pear;
- unsigned long epic_sear;
- unsigned long epic_tbr1;
- unsigned long epic_tbr2;
- unsigned long epic_pbr1;
- unsigned long epic_pbr2;
- unsigned long epic_pmr1;
- unsigned long epic_pmr2;
- unsigned long epic_harx1;
- unsigned long epic_harx2;
- unsigned long epic_pmlt;
- unsigned long epic_tag0;
- unsigned long epic_tag1;
- unsigned long epic_tag2;
- unsigned long epic_tag3;
- unsigned long epic_tag4;
- unsigned long epic_tag5;
- unsigned long epic_tag6;
- unsigned long epic_tag7;
- unsigned long epic_data0;
- unsigned long epic_data1;
- unsigned long epic_data2;
- unsigned long epic_data3;
- unsigned long epic_data4;
- unsigned long epic_data5;
- unsigned long epic_data6;
- unsigned long epic_data7;
-};
-
-struct el_apecs_procdata
-{
- unsigned long paltemp[32]; /* PAL TEMP REGS. */
- /* EV4-specific fields */
- unsigned long exc_addr; /* Address of excepting instruction. */
- unsigned long exc_sum; /* Summary of arithmetic traps. */
- unsigned long exc_mask; /* Exception mask (from exc_sum). */
- unsigned long iccsr; /* IBox hardware enables. */
- unsigned long pal_base; /* Base address for PALcode. */
- unsigned long hier; /* Hardware Interrupt Enable. */
- unsigned long hirr; /* Hardware Interrupt Request. */
- unsigned long csr; /* D-stream fault info. */
- unsigned long dc_stat; /* D-cache status (ECC/Parity Err). */
- unsigned long dc_addr; /* EV3 Phys Addr for ECC/DPERR. */
- unsigned long abox_ctl; /* ABox Control Register. */
- unsigned long biu_stat; /* BIU Status. */
- unsigned long biu_addr; /* BUI Address. */
- unsigned long biu_ctl; /* BIU Control. */
- unsigned long fill_syndrome;/* For correcting ECC errors. */
- unsigned long fill_addr; /* Cache block which was being read */
- unsigned long va; /* Effective VA of fault or miss. */
- unsigned long bc_tag; /* Backup Cache Tag Probe Results.*/
-};
-
-
-#ifdef __KERNEL__
-
-#ifndef __EXTERN_INLINE
-#define __EXTERN_INLINE extern inline
-#define __IO_EXTERN_INLINE
-#endif
-
-/*
- * I/O functions:
- *
- * Unlike Jensen, the APECS machines have no concept of local
- * I/O---everything goes over the PCI bus.
- *
- * There is plenty room for optimization here. In particular,
- * the Alpha's insb/insw/extb/extw should be useful in moving
- * data to/from the right byte-lanes.
- */
-
-#define vip volatile int __force *
-#define vuip volatile unsigned int __force *
-#define vulp volatile unsigned long __force *
-
-#define APECS_SET_HAE \
- do { \
- if (addr >= (1UL << 24)) { \
- unsigned long msb = addr & 0xf8000000; \
- addr -= msb; \
- set_hae(msb); \
- } \
- } while (0)
-
-__EXTERN_INLINE u8 apecs_ioread8(const void __iomem *xaddr)
-{
- unsigned long addr = (unsigned long) xaddr;
- unsigned long result, base_and_type;
-
- if (addr >= APECS_DENSE_MEM) {
- addr -= APECS_DENSE_MEM;
- APECS_SET_HAE;
- base_and_type = APECS_SPARSE_MEM + 0x00;
- } else {
- addr -= APECS_IO;
- base_and_type = APECS_IO + 0x00;
- }
-
- result = *(vip) ((addr << 5) + base_and_type);
- return __kernel_extbl(result, addr & 3);
-}
-
-__EXTERN_INLINE void apecs_iowrite8(u8 b, void __iomem *xaddr)
-{
- unsigned long addr = (unsigned long) xaddr;
- unsigned long w, base_and_type;
-
- if (addr >= APECS_DENSE_MEM) {
- addr -= APECS_DENSE_MEM;
- APECS_SET_HAE;
- base_and_type = APECS_SPARSE_MEM + 0x00;
- } else {
- addr -= APECS_IO;
- base_and_type = APECS_IO + 0x00;
- }
-
- w = __kernel_insbl(b, addr & 3);
- *(vuip) ((addr << 5) + base_and_type) = w;
-}
-
-__EXTERN_INLINE u16 apecs_ioread16(const void __iomem *xaddr)
-{
- unsigned long addr = (unsigned long) xaddr;
- unsigned long result, base_and_type;
-
- if (addr >= APECS_DENSE_MEM) {
- addr -= APECS_DENSE_MEM;
- APECS_SET_HAE;
- base_and_type = APECS_SPARSE_MEM + 0x08;
- } else {
- addr -= APECS_IO;
- base_and_type = APECS_IO + 0x08;
- }
-
- result = *(vip) ((addr << 5) + base_and_type);
- return __kernel_extwl(result, addr & 3);
-}
-
-__EXTERN_INLINE void apecs_iowrite16(u16 b, void __iomem *xaddr)
-{
- unsigned long addr = (unsigned long) xaddr;
- unsigned long w, base_and_type;
-
- if (addr >= APECS_DENSE_MEM) {
- addr -= APECS_DENSE_MEM;
- APECS_SET_HAE;
- base_and_type = APECS_SPARSE_MEM + 0x08;
- } else {
- addr -= APECS_IO;
- base_and_type = APECS_IO + 0x08;
- }
-
- w = __kernel_inswl(b, addr & 3);
- *(vuip) ((addr << 5) + base_and_type) = w;
-}
-
-__EXTERN_INLINE u32 apecs_ioread32(const void __iomem *xaddr)
-{
- unsigned long addr = (unsigned long) xaddr;
- if (addr < APECS_DENSE_MEM)
- addr = ((addr - APECS_IO) << 5) + APECS_IO + 0x18;
- return *(vuip)addr;
-}
-
-__EXTERN_INLINE void apecs_iowrite32(u32 b, void __iomem *xaddr)
-{
- unsigned long addr = (unsigned long) xaddr;
- if (addr < APECS_DENSE_MEM)
- addr = ((addr - APECS_IO) << 5) + APECS_IO + 0x18;
- *(vuip)addr = b;
-}
-
-__EXTERN_INLINE u64 apecs_ioread64(const void __iomem *xaddr)
-{
- unsigned long addr = (unsigned long) xaddr;
- if (addr < APECS_DENSE_MEM)
- addr = ((addr - APECS_IO) << 5) + APECS_IO + 0x18;
- return *(vulp)addr;
-}
-
-__EXTERN_INLINE void apecs_iowrite64(u64 b, void __iomem *xaddr)
-{
- unsigned long addr = (unsigned long) xaddr;
- if (addr < APECS_DENSE_MEM)
- addr = ((addr - APECS_IO) << 5) + APECS_IO + 0x18;
- *(vulp)addr = b;
-}
-
-__EXTERN_INLINE void __iomem *apecs_ioportmap(unsigned long addr)
-{
- return (void __iomem *)(addr + APECS_IO);
-}
-
-__EXTERN_INLINE void __iomem *apecs_ioremap(unsigned long addr,
- unsigned long size)
-{
- return (void __iomem *)(addr + APECS_DENSE_MEM);
-}
-
-__EXTERN_INLINE int apecs_is_ioaddr(unsigned long addr)
-{
- return addr >= IDENT_ADDR + 0x180000000UL;
-}
-
-__EXTERN_INLINE int apecs_is_mmio(const volatile void __iomem *addr)
-{
- return (unsigned long)addr >= APECS_DENSE_MEM;
-}
-
-#undef APECS_SET_HAE
-
-#undef vip
-#undef vuip
-#undef vulp
-
-#undef __IO_PREFIX
-#define __IO_PREFIX apecs
-#define apecs_trivial_io_bw 0
-#define apecs_trivial_io_lq 0
-#define apecs_trivial_rw_bw 2
-#define apecs_trivial_rw_lq 1
-#define apecs_trivial_iounmap 1
-#include <asm/io_trivial.h>
-
-#ifdef __IO_EXTERN_INLINE
-#undef __EXTERN_INLINE
-#undef __IO_EXTERN_INLINE
-#endif
-
-#endif /* __KERNEL__ */
-
-#endif /* __ALPHA_APECS__H__ */
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