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ead751507d
linux-next/arch/alpha/kernel/sys_sable.c
Linus Torvalds ead751507d License cleanup: add SPDX license identifiers to some files 
Many source files in the tree are missing licensing information, which
 makes it harder for compliance tools to determine the correct license.
 
 By default all files without license information are under the default
 license of the kernel, which is GPL version 2.
 
 Update the files which contain no license information with the 'GPL-2.0'
 SPDX license identifier.  The SPDX identifier is a legally binding
 shorthand, which can be used instead of the full boiler plate text.
 
 This patch is based on work done by Thomas Gleixner and Kate Stewart and
 Philippe Ombredanne.
 
 How this work was done:
 
 Patches were generated and checked against linux-4.14-rc6 for a subset of
 the use cases:
  - file had no licensing information it it.
  - file was a */uapi/* one with no licensing information in it,
  - file was a */uapi/* one with existing licensing information,
 
 Further patches will be generated in subsequent months to fix up cases
 where non-standard license headers were used, and references to license
 had to be inferred by heuristics based on keywords.
 
 The analysis to determine which SPDX License Identifier to be applied to
 a file was done in a spreadsheet of side by side results from of the
 output of two independent scanners (ScanCode & Windriver) producing SPDX
 tag:value files created by Philippe Ombredanne.  Philippe prepared the
 base worksheet, and did an initial spot review of a few 1000 files.
 
 The 4.13 kernel was the starting point of the analysis with 60,537 files
 assessed.  Kate Stewart did a file by file comparison of the scanner
 results in the spreadsheet to determine which SPDX license identifier(s)
 to be applied to the file. She confirmed any determination that was not
 immediately clear with lawyers working with the Linux Foundation.
 
 Criteria used to select files for SPDX license identifier tagging was:
  - Files considered eligible had to be source code files.
  - Make and config files were included as candidates if they contained >5
    lines of source
  - File already had some variant of a license header in it (even if <5
    lines).
 
 All documentation files were explicitly excluded.
 
 The following heuristics were used to determine which SPDX license
 identifiers to apply.
 
  - when both scanners couldn't find any license traces, file was
    considered to have no license information in it, and the top level
    COPYING file license applied.
 
    For non */uapi/* files that summary was:
 
    SPDX license identifier                            # files
    ---------------------------------------------------|-------
    GPL-2.0                                              11139
 
    and resulted in the first patch in this series.
 
    If that file was a */uapi/* path one, it was "GPL-2.0 WITH
    Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:
 
    SPDX license identifier                            # files
    ---------------------------------------------------|-------
    GPL-2.0 WITH Linux-syscall-note                        930
 
    and resulted in the second patch in this series.
 
  - if a file had some form of licensing information in it, and was one
    of the */uapi/* ones, it was denoted with the Linux-syscall-note if
    any GPL family license was found in the file or had no licensing in
    it (per prior point).  Results summary:
 
    SPDX license identifier                            # files
    ---------------------------------------------------|------
    GPL-2.0 WITH Linux-syscall-note                       270
    GPL-2.0+ WITH Linux-syscall-note                      169
    ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
    ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
    LGPL-2.1+ WITH Linux-syscall-note                      15
    GPL-1.0+ WITH Linux-syscall-note                       14
    ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
    LGPL-2.0+ WITH Linux-syscall-note                       4
    LGPL-2.1 WITH Linux-syscall-note                        3
    ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
    ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1
 
    and that resulted in the third patch in this series.
 
  - when the two scanners agreed on the detected license(s), that became
    the concluded license(s).
 
  - when there was disagreement between the two scanners (one detected a
    license but the other didn't, or they both detected different
    licenses) a manual inspection of the file occurred.
 
  - In most cases a manual inspection of the information in the file
    resulted in a clear resolution of the license that should apply (and
    which scanner probably needed to revisit its heuristics).
 
  - When it was not immediately clear, the license identifier was
    confirmed with lawyers working with the Linux Foundation.
 
  - If there was any question as to the appropriate license identifier,
    the file was flagged for further research and to be revisited later
    in time.
 
 In total, over 70 hours of logged manual review was done on the
 spreadsheet to determine the SPDX license identifiers to apply to the
 source files by Kate, Philippe, Thomas and, in some cases, confirmation
 by lawyers working with the Linux Foundation.
 
 Kate also obtained a third independent scan of the 4.13 code base from
 FOSSology, and compared selected files where the other two scanners
 disagreed against that SPDX file, to see if there was new insights.  The
 Windriver scanner is based on an older version of FOSSology in part, so
 they are related.
 
 Thomas did random spot checks in about 500 files from the spreadsheets
 for the uapi headers and agreed with SPDX license identifier in the
 files he inspected. For the non-uapi files Thomas did random spot checks
 in about 15000 files.
 
 In initial set of patches against 4.14-rc6, 3 files were found to have
 copy/paste license identifier errors, and have been fixed to reflect the
 correct identifier.
 
 Additionally Philippe spent 10 hours this week doing a detailed manual
 inspection and review of the 12,461 patched files from the initial patch
 version early this week with:
  - a full scancode scan run, collecting the matched texts, detected
    license ids and scores
  - reviewing anything where there was a license detected (about 500+
    files) to ensure that the applied SPDX license was correct
  - reviewing anything where there was no detection but the patch license
    was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
    SPDX license was correct
 
 This produced a worksheet with 20 files needing minor correction.  This
 worksheet was then exported into 3 different .csv files for the
 different types of files to be modified.
 
 These .csv files were then reviewed by Greg.  Thomas wrote a script to
 parse the csv files and add the proper SPDX tag to the file, in the
 format that the file expected.  This script was further refined by Greg
 based on the output to detect more types of files automatically and to
 distinguish between header and source .c files (which need different
 comment types.)  Finally Greg ran the script using the .csv files to
 generate the patches.
 
 Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
 Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
 Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'spdx_identifiers-4.14-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull initial SPDX identifiers from Greg KH:
 "License cleanup: add SPDX license identifiers to some files

  Many source files in the tree are missing licensing information, which
  makes it harder for compliance tools to determine the correct license.

  By default all files without license information are under the default
  license of the kernel, which is GPL version 2.

  Update the files which contain no license information with the
  'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally
  binding shorthand, which can be used instead of the full boiler plate
  text.

  This patch is based on work done by Thomas Gleixner and Kate Stewart
  and Philippe Ombredanne.

  How this work was done:

  Patches were generated and checked against linux-4.14-rc6 for a subset
  of the use cases:

   - file had no licensing information it it.

   - file was a */uapi/* one with no licensing information in it,

   - file was a */uapi/* one with existing licensing information,

  Further patches will be generated in subsequent months to fix up cases
  where non-standard license headers were used, and references to
  license had to be inferred by heuristics based on keywords.

  The analysis to determine which SPDX License Identifier to be applied
  to a file was done in a spreadsheet of side by side results from of
  the output of two independent scanners (ScanCode & Windriver)
  producing SPDX tag:value files created by Philippe Ombredanne.
  Philippe prepared the base worksheet, and did an initial spot review
  of a few 1000 files.

  The 4.13 kernel was the starting point of the analysis with 60,537
  files assessed. Kate Stewart did a file by file comparison of the
  scanner results in the spreadsheet to determine which SPDX license
  identifier(s) to be applied to the file. She confirmed any
  determination that was not immediately clear with lawyers working with
  the Linux Foundation.

  Criteria used to select files for SPDX license identifier tagging was:

   - Files considered eligible had to be source code files.

   - Make and config files were included as candidates if they contained
     >5 lines of source

   - File already had some variant of a license header in it (even if <5
     lines).

  All documentation files were explicitly excluded.

  The following heuristics were used to determine which SPDX license
  identifiers to apply.

   - when both scanners couldn't find any license traces, file was
     considered to have no license information in it, and the top level
     COPYING file license applied.

     For non */uapi/* files that summary was:

       SPDX license identifier                            # files
       ---------------------------------------------------|-------
       GPL-2.0                                              11139

     and resulted in the first patch in this series.

     If that file was a */uapi/* path one, it was "GPL-2.0 WITH
     Linux-syscall-note" otherwise it was "GPL-2.0". Results of that
     was:

       SPDX license identifier                            # files
       ---------------------------------------------------|-------
       GPL-2.0 WITH Linux-syscall-note                        930

     and resulted in the second patch in this series.

   - if a file had some form of licensing information in it, and was one
     of the */uapi/* ones, it was denoted with the Linux-syscall-note if
     any GPL family license was found in the file or had no licensing in
     it (per prior point). Results summary:

       SPDX license identifier                            # files
       ---------------------------------------------------|------
       GPL-2.0 WITH Linux-syscall-note                       270
       GPL-2.0+ WITH Linux-syscall-note                      169
       ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
       ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
       LGPL-2.1+ WITH Linux-syscall-note                      15
       GPL-1.0+ WITH Linux-syscall-note                       14
       ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
       LGPL-2.0+ WITH Linux-syscall-note                       4
       LGPL-2.1 WITH Linux-syscall-note                        3
       ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
       ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

     and that resulted in the third patch in this series.

   - when the two scanners agreed on the detected license(s), that
     became the concluded license(s).

   - when there was disagreement between the two scanners (one detected
     a license but the other didn't, or they both detected different
     licenses) a manual inspection of the file occurred.

   - In most cases a manual inspection of the information in the file
     resulted in a clear resolution of the license that should apply
     (and which scanner probably needed to revisit its heuristics).

   - When it was not immediately clear, the license identifier was
     confirmed with lawyers working with the Linux Foundation.

   - If there was any question as to the appropriate license identifier,
     the file was flagged for further research and to be revisited later
     in time.

  In total, over 70 hours of logged manual review was done on the
  spreadsheet to determine the SPDX license identifiers to apply to the
  source files by Kate, Philippe, Thomas and, in some cases,
  confirmation by lawyers working with the Linux Foundation.

  Kate also obtained a third independent scan of the 4.13 code base from
  FOSSology, and compared selected files where the other two scanners
  disagreed against that SPDX file, to see if there was new insights.
  The Windriver scanner is based on an older version of FOSSology in
  part, so they are related.

  Thomas did random spot checks in about 500 files from the spreadsheets
  for the uapi headers and agreed with SPDX license identifier in the
  files he inspected. For the non-uapi files Thomas did random spot
  checks in about 15000 files.

  In initial set of patches against 4.14-rc6, 3 files were found to have
  copy/paste license identifier errors, and have been fixed to reflect
  the correct identifier.

  Additionally Philippe spent 10 hours this week doing a detailed manual
  inspection and review of the 12,461 patched files from the initial
  patch version early this week with:

   - a full scancode scan run, collecting the matched texts, detected
     license ids and scores

   - reviewing anything where there was a license detected (about 500+
     files) to ensure that the applied SPDX license was correct

   - reviewing anything where there was no detection but the patch
     license was not GPL-2.0 WITH Linux-syscall-note to ensure that the
     applied SPDX license was correct

  This produced a worksheet with 20 files needing minor correction. This
  worksheet was then exported into 3 different .csv files for the
  different types of files to be modified.

  These .csv files were then reviewed by Greg. Thomas wrote a script to
  parse the csv files and add the proper SPDX tag to the file, in the
  format that the file expected. This script was further refined by Greg
  based on the output to detect more types of files automatically and to
  distinguish between header and source .c files (which need different
  comment types.) Finally Greg ran the script using the .csv files to
  generate the patches.

  Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
  Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
  Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

* tag 'spdx_identifiers-4.14-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  License cleanup: add SPDX license identifier to uapi header files with a license
  License cleanup: add SPDX license identifier to uapi header files with no license
  License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 10:04:46 -07:00

637 lines
17 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0
/*
* linux/arch/alpha/kernel/sys_sable.c
*
* Copyright (C) 1995 David A Rusling
* Copyright (C) 1996 Jay A Estabrook
* Copyright (C) 1998, 1999 Richard Henderson
*
* Code supporting the Sable, Sable-Gamma, and Lynx systems.
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <asm/ptrace.h>
#include <asm/dma.h>
#include <asm/irq.h>
#include <asm/mmu_context.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/core_t2.h>
#include <asm/tlbflush.h>
#include "proto.h"
#include "irq_impl.h"
#include "pci_impl.h"
#include "machvec_impl.h"
DEFINE_SPINLOCK(sable_lynx_irq_lock);
typedef struct irq_swizzle_struct
{
char irq_to_mask[64];
char mask_to_irq[64];
/* Note mask bit is true for DISABLED irqs. */
unsigned long shadow_mask;
void (*update_irq_hw)(unsigned long bit, unsigned long mask);
void (*ack_irq_hw)(unsigned long bit);
} irq_swizzle_t;
static irq_swizzle_t *sable_lynx_irq_swizzle;
static void sable_lynx_init_irq(int nr_of_irqs);
#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SABLE)
/***********************************************************************/
/*
* For SABLE, which is really baroque, we manage 40 IRQ's, but the
* hardware really only supports 24, not via normal ISA PIC,
* but cascaded custom 8259's, etc.
* 0-7 (char at 536)
* 8-15 (char at 53a)
* 16-23 (char at 53c)
*
* Summary Registers (536/53a/53c):
*
* Bit Meaning Kernel IRQ
*------------------------------------------
* 0 PCI slot 0 34
* 1 NCR810 (builtin) 33
* 2 TULIP (builtin) 32
* 3 mouse 12
* 4 PCI slot 1 35
* 5 PCI slot 2 36
* 6 keyboard 1
* 7 floppy 6
* 8 COM2 3
* 9 parallel port 7
*10 EISA irq 3 -
*11 EISA irq 4 -
*12 EISA irq 5 5
*13 EISA irq 6 -
*14 EISA irq 7 -
*15 COM1 4
*16 EISA irq 9 9
*17 EISA irq 10 10
*18 EISA irq 11 11
*19 EISA irq 12 -
*20 EISA irq 13 -
*21 EISA irq 14 14
*22 NC 15
*23 IIC -
*/
static void
sable_update_irq_hw(unsigned long bit, unsigned long mask)
{
int port = 0x537;
if (bit >= 16) {
port = 0x53d;
mask >>= 16;
} else if (bit >= 8) {
port = 0x53b;
mask >>= 8;
}
outb(mask, port);
}
static void
sable_ack_irq_hw(unsigned long bit)
{
int port, val1, val2;
if (bit >= 16) {
port = 0x53c;
val1 = 0xE0 | (bit - 16);
val2 = 0xE0 | 4;
} else if (bit >= 8) {
port = 0x53a;
val1 = 0xE0 | (bit - 8);
val2 = 0xE0 | 3;
} else {
port = 0x536;
val1 = 0xE0 | (bit - 0);
val2 = 0xE0 | 1;
}
outb(val1, port); /* ack the slave */
outb(val2, 0x534); /* ack the master */
}
static irq_swizzle_t sable_irq_swizzle = {
{
-1, 6, -1, 8, 15, 12, 7, 9, /* pseudo PIC 0-7 */
-1, 16, 17, 18, 3, -1, 21, 22, /* pseudo PIC 8-15 */
-1, -1, -1, -1, -1, -1, -1, -1, /* pseudo EISA 0-7 */
-1, -1, -1, -1, -1, -1, -1, -1, /* pseudo EISA 8-15 */
2, 1, 0, 4, 5, -1, -1, -1, /* pseudo PCI */
-1, -1, -1, -1, -1, -1, -1, -1, /* */
-1, -1, -1, -1, -1, -1, -1, -1, /* */
-1, -1, -1, -1, -1, -1, -1, -1 /* */
},
{
34, 33, 32, 12, 35, 36, 1, 6, /* mask 0-7 */
3, 7, -1, -1, 5, -1, -1, 4, /* mask 8-15 */
9, 10, 11, -1, -1, 14, 15, -1, /* mask 16-23 */
-1, -1, -1, -1, -1, -1, -1, -1, /* */
-1, -1, -1, -1, -1, -1, -1, -1, /* */
-1, -1, -1, -1, -1, -1, -1, -1, /* */
-1, -1, -1, -1, -1, -1, -1, -1, /* */
-1, -1, -1, -1, -1, -1, -1, -1 /* */
},
-1,
sable_update_irq_hw,
sable_ack_irq_hw
};
static void __init
sable_init_irq(void)
{
outb(-1, 0x537); /* slave 0 */
outb(-1, 0x53b); /* slave 1 */
outb(-1, 0x53d); /* slave 2 */
outb(0x44, 0x535); /* enable cascades in master */
sable_lynx_irq_swizzle = &sable_irq_swizzle;
sable_lynx_init_irq(40);
}
/*
* PCI Fixup configuration for ALPHA SABLE (2100).
*
* The device to slot mapping looks like:
*
* Slot Device
* 0 TULIP
* 1 SCSI
* 2 PCI-EISA bridge
* 3 none
* 4 none
* 5 none
* 6 PCI on board slot 0
* 7 PCI on board slot 1
* 8 PCI on board slot 2
*
*
* This two layered interrupt approach means that we allocate IRQ 16 and
* above for PCI interrupts. The IRQ relates to which bit the interrupt
* comes in on. This makes interrupt processing much easier.
*/
/*
* NOTE: the IRQ assignments below are arbitrary, but need to be consistent
* with the values in the irq swizzling tables above.
*/
static int
sable_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
static char irq_tab[9][5] = {
/*INT INTA INTB INTC INTD */
{ 32+0, 32+0, 32+0, 32+0, 32+0}, /* IdSel 0, TULIP */
{ 32+1, 32+1, 32+1, 32+1, 32+1}, /* IdSel 1, SCSI */
{ -1, -1, -1, -1, -1}, /* IdSel 2, SIO */
{ -1, -1, -1, -1, -1}, /* IdSel 3, none */
{ -1, -1, -1, -1, -1}, /* IdSel 4, none */
{ -1, -1, -1, -1, -1}, /* IdSel 5, none */
{ 32+2, 32+2, 32+2, 32+2, 32+2}, /* IdSel 6, slot 0 */
{ 32+3, 32+3, 32+3, 32+3, 32+3}, /* IdSel 7, slot 1 */
{ 32+4, 32+4, 32+4, 32+4, 32+4} /* IdSel 8, slot 2 */
};
long min_idsel = 0, max_idsel = 8, irqs_per_slot = 5;
return COMMON_TABLE_LOOKUP;
}
#endif /* defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SABLE) */
#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_LYNX)
/***********************************************************************/
/* LYNX hardware specifics
*/
/*
* For LYNX, which is also baroque, we manage 64 IRQs, via a custom IC.
*
* Bit Meaning Kernel IRQ
*------------------------------------------
* 0
* 1
* 2
* 3 mouse 12
* 4
* 5
* 6 keyboard 1
* 7 floppy 6
* 8 COM2 3
* 9 parallel port 7
*10 EISA irq 3 -
*11 EISA irq 4 -
*12 EISA irq 5 5
*13 EISA irq 6 -
*14 EISA irq 7 -
*15 COM1 4
*16 EISA irq 9 9
*17 EISA irq 10 10
*18 EISA irq 11 11
*19 EISA irq 12 -
*20
*21 EISA irq 14 14
*22 EISA irq 15 15
*23 IIC -
*24 VGA (builtin) -
*25
*26
*27
*28 NCR810 (builtin) 28
*29
*30
*31
*32 PCI 0 slot 4 A primary bus 32
*33 PCI 0 slot 4 B primary bus 33
*34 PCI 0 slot 4 C primary bus 34
*35 PCI 0 slot 4 D primary bus
*36 PCI 0 slot 5 A primary bus
*37 PCI 0 slot 5 B primary bus
*38 PCI 0 slot 5 C primary bus
*39 PCI 0 slot 5 D primary bus
*40 PCI 0 slot 6 A primary bus
*41 PCI 0 slot 6 B primary bus
*42 PCI 0 slot 6 C primary bus
*43 PCI 0 slot 6 D primary bus
*44 PCI 0 slot 7 A primary bus
*45 PCI 0 slot 7 B primary bus
*46 PCI 0 slot 7 C primary bus
*47 PCI 0 slot 7 D primary bus
*48 PCI 0 slot 0 A secondary bus
*49 PCI 0 slot 0 B secondary bus
*50 PCI 0 slot 0 C secondary bus
*51 PCI 0 slot 0 D secondary bus
*52 PCI 0 slot 1 A secondary bus
*53 PCI 0 slot 1 B secondary bus
*54 PCI 0 slot 1 C secondary bus
*55 PCI 0 slot 1 D secondary bus
*56 PCI 0 slot 2 A secondary bus
*57 PCI 0 slot 2 B secondary bus
*58 PCI 0 slot 2 C secondary bus
*59 PCI 0 slot 2 D secondary bus
*60 PCI 0 slot 3 A secondary bus
*61 PCI 0 slot 3 B secondary bus
*62 PCI 0 slot 3 C secondary bus
*63 PCI 0 slot 3 D secondary bus
*/
static void
lynx_update_irq_hw(unsigned long bit, unsigned long mask)
{
/*
* Write the AIR register on the T3/T4 with the
* address of the IC mask register (offset 0x40)
*/
*(vulp)T2_AIR = 0x40;
mb();
*(vulp)T2_AIR; /* re-read to force write */
mb();
*(vulp)T2_DIR = mask;
mb();
mb();
}
static void
lynx_ack_irq_hw(unsigned long bit)
{
*(vulp)T2_VAR = (u_long) bit;
mb();
mb();
}
static irq_swizzle_t lynx_irq_swizzle = {
{ /* irq_to_mask */
-1, 6, -1, 8, 15, 12, 7, 9, /* pseudo PIC 0-7 */
-1, 16, 17, 18, 3, -1, 21, 22, /* pseudo PIC 8-15 */
-1, -1, -1, -1, -1, -1, -1, -1, /* pseudo */
-1, -1, -1, -1, 28, -1, -1, -1, /* pseudo */
32, 33, 34, 35, 36, 37, 38, 39, /* mask 32-39 */
40, 41, 42, 43, 44, 45, 46, 47, /* mask 40-47 */
48, 49, 50, 51, 52, 53, 54, 55, /* mask 48-55 */
56, 57, 58, 59, 60, 61, 62, 63 /* mask 56-63 */
},
{ /* mask_to_irq */
-1, -1, -1, 12, -1, -1, 1, 6, /* mask 0-7 */
3, 7, -1, -1, 5, -1, -1, 4, /* mask 8-15 */
9, 10, 11, -1, -1, 14, 15, -1, /* mask 16-23 */
-1, -1, -1, -1, 28, -1, -1, -1, /* mask 24-31 */
32, 33, 34, 35, 36, 37, 38, 39, /* mask 32-39 */
40, 41, 42, 43, 44, 45, 46, 47, /* mask 40-47 */
48, 49, 50, 51, 52, 53, 54, 55, /* mask 48-55 */
56, 57, 58, 59, 60, 61, 62, 63 /* mask 56-63 */
},
-1,
lynx_update_irq_hw,
lynx_ack_irq_hw
};
static void __init
lynx_init_irq(void)
{
sable_lynx_irq_swizzle = &lynx_irq_swizzle;
sable_lynx_init_irq(64);
}
/*
* PCI Fixup configuration for ALPHA LYNX (2100A)
*
* The device to slot mapping looks like:
*
* Slot Device
* 0 none
* 1 none
* 2 PCI-EISA bridge
* 3 PCI-PCI bridge
* 4 NCR 810 (Demi-Lynx only)
* 5 none
* 6 PCI on board slot 4
* 7 PCI on board slot 5
* 8 PCI on board slot 6
* 9 PCI on board slot 7
*
* And behind the PPB we have:
*
* 11 PCI on board slot 0
* 12 PCI on board slot 1
* 13 PCI on board slot 2
* 14 PCI on board slot 3
*/
/*
* NOTE: the IRQ assignments below are arbitrary, but need to be consistent
* with the values in the irq swizzling tables above.
*/
static int
lynx_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
static char irq_tab[19][5] = {
/*INT INTA INTB INTC INTD */
{ -1, -1, -1, -1, -1}, /* IdSel 13, PCEB */
{ -1, -1, -1, -1, -1}, /* IdSel 14, PPB */
{ 28, 28, 28, 28, 28}, /* IdSel 15, NCR demi */
{ -1, -1, -1, -1, -1}, /* IdSel 16, none */
{ 32, 32, 33, 34, 35}, /* IdSel 17, slot 4 */
{ 36, 36, 37, 38, 39}, /* IdSel 18, slot 5 */
{ 40, 40, 41, 42, 43}, /* IdSel 19, slot 6 */
{ 44, 44, 45, 46, 47}, /* IdSel 20, slot 7 */
{ -1, -1, -1, -1, -1}, /* IdSel 22, none */
/* The following are actually behind the PPB. */
{ -1, -1, -1, -1, -1}, /* IdSel 16 none */
{ 28, 28, 28, 28, 28}, /* IdSel 17 NCR lynx */
{ -1, -1, -1, -1, -1}, /* IdSel 18 none */
{ -1, -1, -1, -1, -1}, /* IdSel 19 none */
{ -1, -1, -1, -1, -1}, /* IdSel 20 none */
{ -1, -1, -1, -1, -1}, /* IdSel 21 none */
{ 48, 48, 49, 50, 51}, /* IdSel 22 slot 0 */
{ 52, 52, 53, 54, 55}, /* IdSel 23 slot 1 */
{ 56, 56, 57, 58, 59}, /* IdSel 24 slot 2 */
{ 60, 60, 61, 62, 63} /* IdSel 25 slot 3 */
};
const long min_idsel = 2, max_idsel = 20, irqs_per_slot = 5;
return COMMON_TABLE_LOOKUP;
}
static u8
lynx_swizzle(struct pci_dev *dev, u8 *pinp)
{
int slot, pin = *pinp;
if (dev->bus->number == 0) {
slot = PCI_SLOT(dev->devfn);
}
/* Check for the built-in bridge */
else if (PCI_SLOT(dev->bus->self->devfn) == 3) {
slot = PCI_SLOT(dev->devfn) + 11;
}
else
{
/* Must be a card-based bridge. */
do {
if (PCI_SLOT(dev->bus->self->devfn) == 3) {
slot = PCI_SLOT(dev->devfn) + 11;
break;
}
pin = pci_swizzle_interrupt_pin(dev, pin);
/* Move up the chain of bridges. */
dev = dev->bus->self;
/* Slot of the next bridge. */
slot = PCI_SLOT(dev->devfn);
} while (dev->bus->self);
}
*pinp = pin;
return slot;
}
#endif /* defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_LYNX) */
/***********************************************************************/
/* GENERIC irq routines */
static inline void
sable_lynx_enable_irq(struct irq_data *d)
{
unsigned long bit, mask;
bit = sable_lynx_irq_swizzle->irq_to_mask[d->irq];
spin_lock(&sable_lynx_irq_lock);
mask = sable_lynx_irq_swizzle->shadow_mask &= ~(1UL << bit);
sable_lynx_irq_swizzle->update_irq_hw(bit, mask);
spin_unlock(&sable_lynx_irq_lock);
#if 0
printk("%s: mask 0x%lx bit 0x%lx irq 0x%x\n",
__func__, mask, bit, irq);
#endif
}
static void
sable_lynx_disable_irq(struct irq_data *d)
{
unsigned long bit, mask;
bit = sable_lynx_irq_swizzle->irq_to_mask[d->irq];
spin_lock(&sable_lynx_irq_lock);
mask = sable_lynx_irq_swizzle->shadow_mask |= 1UL << bit;
sable_lynx_irq_swizzle->update_irq_hw(bit, mask);
spin_unlock(&sable_lynx_irq_lock);
#if 0
printk("%s: mask 0x%lx bit 0x%lx irq 0x%x\n",
__func__, mask, bit, irq);
#endif
}
static void
sable_lynx_mask_and_ack_irq(struct irq_data *d)
{
unsigned long bit, mask;
bit = sable_lynx_irq_swizzle->irq_to_mask[d->irq];
spin_lock(&sable_lynx_irq_lock);
mask = sable_lynx_irq_swizzle->shadow_mask |= 1UL << bit;
sable_lynx_irq_swizzle->update_irq_hw(bit, mask);
sable_lynx_irq_swizzle->ack_irq_hw(bit);
spin_unlock(&sable_lynx_irq_lock);
}
static struct irq_chip sable_lynx_irq_type = {
.name = "SABLE/LYNX",
.irq_unmask = sable_lynx_enable_irq,
.irq_mask = sable_lynx_disable_irq,
.irq_mask_ack = sable_lynx_mask_and_ack_irq,
};
static void
sable_lynx_srm_device_interrupt(unsigned long vector)
{
/* Note that the vector reported by the SRM PALcode corresponds
to the interrupt mask bits, but we have to manage via the
so-called legacy IRQs for many common devices. */
int bit, irq;
bit = (vector - 0x800) >> 4;
irq = sable_lynx_irq_swizzle->mask_to_irq[bit];
#if 0
printk("%s: vector 0x%lx bit 0x%x irq 0x%x\n",
__func__, vector, bit, irq);
#endif
handle_irq(irq);
}
static void __init
sable_lynx_init_irq(int nr_of_irqs)
{
long i;
for (i = 0; i < nr_of_irqs; ++i) {
irq_set_chip_and_handler(i, &sable_lynx_irq_type,
handle_level_irq);
irq_set_status_flags(i, IRQ_LEVEL);
}
common_init_isa_dma();
}
static void __init
sable_lynx_init_pci(void)
{
common_init_pci();
}
/*****************************************************************/
/*
* The System Vectors
*
* In order that T2_HAE_ADDRESS should be a constant, we play
* these games with GAMMA_BIAS.
*/
#if defined(CONFIG_ALPHA_GENERIC) || \
(defined(CONFIG_ALPHA_SABLE) && !defined(CONFIG_ALPHA_GAMMA))
#undef GAMMA_BIAS
#define GAMMA_BIAS 0
struct alpha_machine_vector sable_mv __initmv = {
.vector_name = "Sable",
DO_EV4_MMU,
DO_DEFAULT_RTC,
DO_T2_IO,
.machine_check = t2_machine_check,
.max_isa_dma_address = ALPHA_SABLE_MAX_ISA_DMA_ADDRESS,
.min_io_address = EISA_DEFAULT_IO_BASE,
.min_mem_address = T2_DEFAULT_MEM_BASE,
.nr_irqs = 40,
.device_interrupt = sable_lynx_srm_device_interrupt,
.init_arch = t2_init_arch,
.init_irq = sable_init_irq,
.init_rtc = common_init_rtc,
.init_pci = sable_lynx_init_pci,
.kill_arch = t2_kill_arch,
.pci_map_irq = sable_map_irq,
.pci_swizzle = common_swizzle,
.sys = { .t2 = {
.gamma_bias = 0
} }
};
ALIAS_MV(sable)
#endif /* GENERIC || (SABLE && !GAMMA) */
#if defined(CONFIG_ALPHA_GENERIC) || \
(defined(CONFIG_ALPHA_SABLE) && defined(CONFIG_ALPHA_GAMMA))
#undef GAMMA_BIAS
#define GAMMA_BIAS _GAMMA_BIAS
struct alpha_machine_vector sable_gamma_mv __initmv = {
.vector_name = "Sable-Gamma",
DO_EV5_MMU,
DO_DEFAULT_RTC,
DO_T2_IO,
.machine_check = t2_machine_check,
.max_isa_dma_address = ALPHA_SABLE_MAX_ISA_DMA_ADDRESS,
.min_io_address = EISA_DEFAULT_IO_BASE,
.min_mem_address = T2_DEFAULT_MEM_BASE,
.nr_irqs = 40,
.device_interrupt = sable_lynx_srm_device_interrupt,
.init_arch = t2_init_arch,
.init_irq = sable_init_irq,
.init_rtc = common_init_rtc,
.init_pci = sable_lynx_init_pci,
.kill_arch = t2_kill_arch,
.pci_map_irq = sable_map_irq,
.pci_swizzle = common_swizzle,
.sys = { .t2 = {
.gamma_bias = _GAMMA_BIAS
} }
};
ALIAS_MV(sable_gamma)
#endif /* GENERIC || (SABLE && GAMMA) */
#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_LYNX)
#undef GAMMA_BIAS
#define GAMMA_BIAS _GAMMA_BIAS
struct alpha_machine_vector lynx_mv __initmv = {
.vector_name = "Lynx",
DO_EV4_MMU,
DO_DEFAULT_RTC,
DO_T2_IO,
.machine_check = t2_machine_check,
.max_isa_dma_address = ALPHA_SABLE_MAX_ISA_DMA_ADDRESS,
.min_io_address = EISA_DEFAULT_IO_BASE,
.min_mem_address = T2_DEFAULT_MEM_BASE,
.nr_irqs = 64,
.device_interrupt = sable_lynx_srm_device_interrupt,
.init_arch = t2_init_arch,
.init_irq = lynx_init_irq,
.init_rtc = common_init_rtc,
.init_pci = sable_lynx_init_pci,
.kill_arch = t2_kill_arch,
.pci_map_irq = lynx_map_irq,
.pci_swizzle = lynx_swizzle,
.sys = { .t2 = {
.gamma_bias = _GAMMA_BIAS
} }
};
ALIAS_MV(lynx)
#endif /* GENERIC || LYNX */
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