1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
517 lines
17 KiB
C
517 lines
17 KiB
C
#ifndef __ALPHA_APECS__H__
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#define __ALPHA_APECS__H__
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#include <linux/types.h>
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#include <asm/compiler.h>
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/*
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* APECS is the internal name for the 2107x chipset which provides
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* memory controller and PCI access for the 21064 chip based systems.
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*
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* This file is based on:
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*
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* DECchip 21071-AA and DECchip 21072-AA Core Logic Chipsets
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* Data Sheet
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*
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* EC-N0648-72
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*
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*
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* david.rusling@reo.mts.dec.com Initial Version.
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*
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*/
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/*
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An AVANTI *might* be an XL, and an XL has only 27 bits of ISA address
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that get passed through the PCI<->ISA bridge chip. So we've gotta use
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both windows to max out the physical memory we can DMA to. Sigh...
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If we try a window at 0 for 1GB as a work-around, we run into conflicts
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with ISA/PCI bus memory which can't be relocated, like VGA aperture and
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BIOS ROMs. So we must put the windows high enough to avoid these areas.
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We put window 1 at BUS 64Mb for 64Mb, mapping physical 0 to 64Mb-1,
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and window 2 at BUS 1Gb for 1Gb, mapping physical 0 to 1Gb-1.
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Yes, this does map 0 to 64Mb-1 twice, but only window 1 will actually
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be used for that range (via virt_to_bus()).
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Note that we actually fudge the window 1 maximum as 48Mb instead of 64Mb,
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to keep virt_to_bus() from returning an address in the first window, for
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a data area that goes beyond the 64Mb first DMA window. Sigh...
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The fudge factor MUST match with <asm/dma.h> MAX_DMA_ADDRESS, but
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we can't just use that here, because of header file looping... :-(
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Window 1 will be used for all DMA from the ISA bus; yes, that does
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limit what memory an ISA floppy or sound card or Ethernet can touch, but
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it's also a known limitation on other platforms as well. We use the
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same technique that is used on INTEL platforms with similar limitation:
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set MAX_DMA_ADDRESS and clear some pages' DMAable flags during mem_init().
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We trust that any ISA bus device drivers will *always* ask for DMAable
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memory explicitly via kmalloc()/get_free_pages() flags arguments.
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Note that most PCI bus devices' drivers do *not* explicitly ask for
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DMAable memory; they count on being able to DMA to any memory they
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get from kmalloc()/get_free_pages(). They will also use window 1 for
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any physical memory accesses below 64Mb; the rest will be handled by
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window 2, maxing out at 1Gb of memory. I trust this is enough... :-)
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We hope that the area before the first window is large enough so that
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there will be no overlap at the top end (64Mb). We *must* locate the
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PCI cards' memory just below window 1, so that there's still the
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possibility of being able to access it via SPARSE space. This is
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important for cards such as the Matrox Millennium, whose Xserver
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wants to access memory-mapped registers in byte and short lengths.
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Note that the XL is treated differently from the AVANTI, even though
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for most other things they are identical. It didn't seem reasonable to
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make the AVANTI support pay for the limitations of the XL. It is true,
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however, that an XL kernel will run on an AVANTI without problems.
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%%% All of this should be obviated by the ability to route
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everything through the iommu.
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*/
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/*
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* 21071-DA Control and Status registers.
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* These are used for PCI memory access.
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*/
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#define APECS_IOC_DCSR (IDENT_ADDR + 0x1A0000000UL)
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#define APECS_IOC_PEAR (IDENT_ADDR + 0x1A0000020UL)
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#define APECS_IOC_SEAR (IDENT_ADDR + 0x1A0000040UL)
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#define APECS_IOC_DR1 (IDENT_ADDR + 0x1A0000060UL)
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#define APECS_IOC_DR2 (IDENT_ADDR + 0x1A0000080UL)
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#define APECS_IOC_DR3 (IDENT_ADDR + 0x1A00000A0UL)
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#define APECS_IOC_TB1R (IDENT_ADDR + 0x1A00000C0UL)
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#define APECS_IOC_TB2R (IDENT_ADDR + 0x1A00000E0UL)
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#define APECS_IOC_PB1R (IDENT_ADDR + 0x1A0000100UL)
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#define APECS_IOC_PB2R (IDENT_ADDR + 0x1A0000120UL)
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#define APECS_IOC_PM1R (IDENT_ADDR + 0x1A0000140UL)
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#define APECS_IOC_PM2R (IDENT_ADDR + 0x1A0000160UL)
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#define APECS_IOC_HAXR0 (IDENT_ADDR + 0x1A0000180UL)
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#define APECS_IOC_HAXR1 (IDENT_ADDR + 0x1A00001A0UL)
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#define APECS_IOC_HAXR2 (IDENT_ADDR + 0x1A00001C0UL)
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#define APECS_IOC_PMLT (IDENT_ADDR + 0x1A00001E0UL)
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#define APECS_IOC_TLBTAG0 (IDENT_ADDR + 0x1A0000200UL)
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#define APECS_IOC_TLBTAG1 (IDENT_ADDR + 0x1A0000220UL)
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#define APECS_IOC_TLBTAG2 (IDENT_ADDR + 0x1A0000240UL)
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#define APECS_IOC_TLBTAG3 (IDENT_ADDR + 0x1A0000260UL)
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#define APECS_IOC_TLBTAG4 (IDENT_ADDR + 0x1A0000280UL)
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#define APECS_IOC_TLBTAG5 (IDENT_ADDR + 0x1A00002A0UL)
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#define APECS_IOC_TLBTAG6 (IDENT_ADDR + 0x1A00002C0UL)
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#define APECS_IOC_TLBTAG7 (IDENT_ADDR + 0x1A00002E0UL)
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#define APECS_IOC_TLBDATA0 (IDENT_ADDR + 0x1A0000300UL)
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#define APECS_IOC_TLBDATA1 (IDENT_ADDR + 0x1A0000320UL)
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#define APECS_IOC_TLBDATA2 (IDENT_ADDR + 0x1A0000340UL)
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#define APECS_IOC_TLBDATA3 (IDENT_ADDR + 0x1A0000360UL)
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#define APECS_IOC_TLBDATA4 (IDENT_ADDR + 0x1A0000380UL)
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#define APECS_IOC_TLBDATA5 (IDENT_ADDR + 0x1A00003A0UL)
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#define APECS_IOC_TLBDATA6 (IDENT_ADDR + 0x1A00003C0UL)
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#define APECS_IOC_TLBDATA7 (IDENT_ADDR + 0x1A00003E0UL)
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#define APECS_IOC_TBIA (IDENT_ADDR + 0x1A0000400UL)
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/*
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* 21071-CA Control and Status registers.
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* These are used to program memory timing,
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* configure memory and initialise the B-Cache.
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*/
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#define APECS_MEM_GCR (IDENT_ADDR + 0x180000000UL)
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#define APECS_MEM_EDSR (IDENT_ADDR + 0x180000040UL)
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#define APECS_MEM_TAR (IDENT_ADDR + 0x180000060UL)
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#define APECS_MEM_ELAR (IDENT_ADDR + 0x180000080UL)
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#define APECS_MEM_EHAR (IDENT_ADDR + 0x1800000a0UL)
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#define APECS_MEM_SFT_RST (IDENT_ADDR + 0x1800000c0UL)
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#define APECS_MEM_LDxLAR (IDENT_ADDR + 0x1800000e0UL)
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#define APECS_MEM_LDxHAR (IDENT_ADDR + 0x180000100UL)
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#define APECS_MEM_GTR (IDENT_ADDR + 0x180000200UL)
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#define APECS_MEM_RTR (IDENT_ADDR + 0x180000220UL)
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#define APECS_MEM_VFPR (IDENT_ADDR + 0x180000240UL)
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#define APECS_MEM_PDLDR (IDENT_ADDR + 0x180000260UL)
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#define APECS_MEM_PDhDR (IDENT_ADDR + 0x180000280UL)
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/* Bank x Base Address Register */
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#define APECS_MEM_B0BAR (IDENT_ADDR + 0x180000800UL)
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#define APECS_MEM_B1BAR (IDENT_ADDR + 0x180000820UL)
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#define APECS_MEM_B2BAR (IDENT_ADDR + 0x180000840UL)
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#define APECS_MEM_B3BAR (IDENT_ADDR + 0x180000860UL)
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#define APECS_MEM_B4BAR (IDENT_ADDR + 0x180000880UL)
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#define APECS_MEM_B5BAR (IDENT_ADDR + 0x1800008A0UL)
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#define APECS_MEM_B6BAR (IDENT_ADDR + 0x1800008C0UL)
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#define APECS_MEM_B7BAR (IDENT_ADDR + 0x1800008E0UL)
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#define APECS_MEM_B8BAR (IDENT_ADDR + 0x180000900UL)
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/* Bank x Configuration Register */
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#define APECS_MEM_B0BCR (IDENT_ADDR + 0x180000A00UL)
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#define APECS_MEM_B1BCR (IDENT_ADDR + 0x180000A20UL)
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#define APECS_MEM_B2BCR (IDENT_ADDR + 0x180000A40UL)
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#define APECS_MEM_B3BCR (IDENT_ADDR + 0x180000A60UL)
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#define APECS_MEM_B4BCR (IDENT_ADDR + 0x180000A80UL)
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#define APECS_MEM_B5BCR (IDENT_ADDR + 0x180000AA0UL)
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#define APECS_MEM_B6BCR (IDENT_ADDR + 0x180000AC0UL)
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#define APECS_MEM_B7BCR (IDENT_ADDR + 0x180000AE0UL)
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#define APECS_MEM_B8BCR (IDENT_ADDR + 0x180000B00UL)
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/* Bank x Timing Register A */
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#define APECS_MEM_B0TRA (IDENT_ADDR + 0x180000C00UL)
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#define APECS_MEM_B1TRA (IDENT_ADDR + 0x180000C20UL)
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#define APECS_MEM_B2TRA (IDENT_ADDR + 0x180000C40UL)
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#define APECS_MEM_B3TRA (IDENT_ADDR + 0x180000C60UL)
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#define APECS_MEM_B4TRA (IDENT_ADDR + 0x180000C80UL)
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#define APECS_MEM_B5TRA (IDENT_ADDR + 0x180000CA0UL)
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#define APECS_MEM_B6TRA (IDENT_ADDR + 0x180000CC0UL)
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#define APECS_MEM_B7TRA (IDENT_ADDR + 0x180000CE0UL)
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#define APECS_MEM_B8TRA (IDENT_ADDR + 0x180000D00UL)
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/* Bank x Timing Register B */
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#define APECS_MEM_B0TRB (IDENT_ADDR + 0x180000E00UL)
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#define APECS_MEM_B1TRB (IDENT_ADDR + 0x180000E20UL)
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#define APECS_MEM_B2TRB (IDENT_ADDR + 0x180000E40UL)
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#define APECS_MEM_B3TRB (IDENT_ADDR + 0x180000E60UL)
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#define APECS_MEM_B4TRB (IDENT_ADDR + 0x180000E80UL)
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#define APECS_MEM_B5TRB (IDENT_ADDR + 0x180000EA0UL)
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#define APECS_MEM_B6TRB (IDENT_ADDR + 0x180000EC0UL)
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#define APECS_MEM_B7TRB (IDENT_ADDR + 0x180000EE0UL)
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#define APECS_MEM_B8TRB (IDENT_ADDR + 0x180000F00UL)
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/*
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* Memory spaces:
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*/
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#define APECS_IACK_SC (IDENT_ADDR + 0x1b0000000UL)
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#define APECS_CONF (IDENT_ADDR + 0x1e0000000UL)
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#define APECS_IO (IDENT_ADDR + 0x1c0000000UL)
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#define APECS_SPARSE_MEM (IDENT_ADDR + 0x200000000UL)
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#define APECS_DENSE_MEM (IDENT_ADDR + 0x300000000UL)
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/*
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* Bit definitions for I/O Controller status register 0:
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*/
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#define APECS_IOC_STAT0_CMD 0xf
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#define APECS_IOC_STAT0_ERR (1<<4)
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#define APECS_IOC_STAT0_LOST (1<<5)
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#define APECS_IOC_STAT0_THIT (1<<6)
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#define APECS_IOC_STAT0_TREF (1<<7)
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#define APECS_IOC_STAT0_CODE_SHIFT 8
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#define APECS_IOC_STAT0_CODE_MASK 0x7
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#define APECS_IOC_STAT0_P_NBR_SHIFT 13
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#define APECS_IOC_STAT0_P_NBR_MASK 0x7ffff
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#define APECS_HAE_ADDRESS APECS_IOC_HAXR1
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/*
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* Data structure for handling APECS machine checks:
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*/
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struct el_apecs_mikasa_sysdata_mcheck
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{
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unsigned long coma_gcr;
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unsigned long coma_edsr;
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unsigned long coma_ter;
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unsigned long coma_elar;
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unsigned long coma_ehar;
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unsigned long coma_ldlr;
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unsigned long coma_ldhr;
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unsigned long coma_base0;
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unsigned long coma_base1;
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unsigned long coma_base2;
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unsigned long coma_base3;
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unsigned long coma_cnfg0;
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unsigned long coma_cnfg1;
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unsigned long coma_cnfg2;
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unsigned long coma_cnfg3;
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unsigned long epic_dcsr;
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unsigned long epic_pear;
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unsigned long epic_sear;
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unsigned long epic_tbr1;
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unsigned long epic_tbr2;
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unsigned long epic_pbr1;
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unsigned long epic_pbr2;
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unsigned long epic_pmr1;
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unsigned long epic_pmr2;
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unsigned long epic_harx1;
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unsigned long epic_harx2;
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unsigned long epic_pmlt;
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unsigned long epic_tag0;
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unsigned long epic_tag1;
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unsigned long epic_tag2;
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unsigned long epic_tag3;
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unsigned long epic_tag4;
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unsigned long epic_tag5;
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unsigned long epic_tag6;
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unsigned long epic_tag7;
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unsigned long epic_data0;
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unsigned long epic_data1;
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unsigned long epic_data2;
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unsigned long epic_data3;
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unsigned long epic_data4;
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unsigned long epic_data5;
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unsigned long epic_data6;
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unsigned long epic_data7;
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unsigned long pceb_vid;
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unsigned long pceb_did;
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unsigned long pceb_revision;
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unsigned long pceb_command;
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unsigned long pceb_status;
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unsigned long pceb_latency;
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unsigned long pceb_control;
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unsigned long pceb_arbcon;
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unsigned long pceb_arbpri;
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unsigned long esc_id;
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unsigned long esc_revision;
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unsigned long esc_int0;
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unsigned long esc_int1;
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unsigned long esc_elcr0;
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unsigned long esc_elcr1;
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unsigned long esc_last_eisa;
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unsigned long esc_nmi_stat;
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unsigned long pci_ir;
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unsigned long pci_imr;
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unsigned long svr_mgr;
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};
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/* This for the normal APECS machines. */
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struct el_apecs_sysdata_mcheck
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{
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unsigned long coma_gcr;
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unsigned long coma_edsr;
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unsigned long coma_ter;
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unsigned long coma_elar;
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unsigned long coma_ehar;
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unsigned long coma_ldlr;
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unsigned long coma_ldhr;
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unsigned long coma_base0;
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unsigned long coma_base1;
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unsigned long coma_base2;
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unsigned long coma_cnfg0;
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unsigned long coma_cnfg1;
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unsigned long coma_cnfg2;
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unsigned long epic_dcsr;
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unsigned long epic_pear;
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unsigned long epic_sear;
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unsigned long epic_tbr1;
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unsigned long epic_tbr2;
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unsigned long epic_pbr1;
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unsigned long epic_pbr2;
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unsigned long epic_pmr1;
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unsigned long epic_pmr2;
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unsigned long epic_harx1;
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unsigned long epic_harx2;
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unsigned long epic_pmlt;
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unsigned long epic_tag0;
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unsigned long epic_tag1;
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unsigned long epic_tag2;
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unsigned long epic_tag3;
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unsigned long epic_tag4;
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unsigned long epic_tag5;
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unsigned long epic_tag6;
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unsigned long epic_tag7;
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unsigned long epic_data0;
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unsigned long epic_data1;
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unsigned long epic_data2;
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unsigned long epic_data3;
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unsigned long epic_data4;
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unsigned long epic_data5;
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unsigned long epic_data6;
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unsigned long epic_data7;
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};
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struct el_apecs_procdata
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{
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unsigned long paltemp[32]; /* PAL TEMP REGS. */
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/* EV4-specific fields */
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unsigned long exc_addr; /* Address of excepting instruction. */
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unsigned long exc_sum; /* Summary of arithmetic traps. */
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unsigned long exc_mask; /* Exception mask (from exc_sum). */
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unsigned long iccsr; /* IBox hardware enables. */
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unsigned long pal_base; /* Base address for PALcode. */
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unsigned long hier; /* Hardware Interrupt Enable. */
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unsigned long hirr; /* Hardware Interrupt Request. */
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unsigned long csr; /* D-stream fault info. */
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unsigned long dc_stat; /* D-cache status (ECC/Parity Err). */
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unsigned long dc_addr; /* EV3 Phys Addr for ECC/DPERR. */
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unsigned long abox_ctl; /* ABox Control Register. */
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unsigned long biu_stat; /* BIU Status. */
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unsigned long biu_addr; /* BUI Address. */
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unsigned long biu_ctl; /* BIU Control. */
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unsigned long fill_syndrome;/* For correcting ECC errors. */
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unsigned long fill_addr; /* Cache block which was being read */
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unsigned long va; /* Effective VA of fault or miss. */
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unsigned long bc_tag; /* Backup Cache Tag Probe Results.*/
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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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* Unlike Jensen, the APECS machines have no concept of local
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* I/O---everything goes over the PCI bus.
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*
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* There is plenty room for optimization here. In particular,
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* the Alpha's insb/insw/extb/extw should be useful in moving
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* data to/from the right byte-lanes.
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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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#define vulp volatile unsigned long __force *
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#define APECS_SET_HAE \
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do { \
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if (addr >= (1UL << 24)) { \
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unsigned long msb = addr & 0xf8000000; \
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addr -= msb; \
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set_hae(msb); \
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} \
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} while (0)
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__EXTERN_INLINE unsigned int apecs_ioread8(void __iomem *xaddr)
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{
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unsigned long addr = (unsigned long) xaddr;
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unsigned long result, base_and_type;
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if (addr >= APECS_DENSE_MEM) {
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addr -= APECS_DENSE_MEM;
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APECS_SET_HAE;
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base_and_type = APECS_SPARSE_MEM + 0x00;
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} else {
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addr -= APECS_IO;
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base_and_type = APECS_IO + 0x00;
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}
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result = *(vip) ((addr << 5) + base_and_type);
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return __kernel_extbl(result, addr & 3);
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}
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__EXTERN_INLINE void apecs_iowrite8(u8 b, void __iomem *xaddr)
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{
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unsigned long addr = (unsigned long) xaddr;
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unsigned long w, base_and_type;
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if (addr >= APECS_DENSE_MEM) {
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addr -= APECS_DENSE_MEM;
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APECS_SET_HAE;
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base_and_type = APECS_SPARSE_MEM + 0x00;
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} else {
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addr -= APECS_IO;
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base_and_type = APECS_IO + 0x00;
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}
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w = __kernel_insbl(b, addr & 3);
|
|
*(vuip) ((addr << 5) + base_and_type) = w;
|
|
}
|
|
|
|
__EXTERN_INLINE unsigned int apecs_ioread16(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 unsigned int apecs_ioread32(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 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__ */
|