Linux-2.6.12-rc2
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!
diff --git a/include/asm-alpha/core_apecs.h b/include/asm-alpha/core_apecs.h
new file mode 100644
index 0000000..6785ff7
--- /dev/null
+++ b/include/asm-alpha/core_apecs.h
@@ -0,0 +1,517 @@
+#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 unsigned int apecs_ioread8(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 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__ */
