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/arch/arm/mach-ep93xx/include/mach/entry-macro.S

https://bitbucket.org/sammyz/iscream_thunderc-2.6.35-rebase
Assembly | 59 lines | 48 code | 11 blank | 0 comment | 1 complexity | 07d07e42026a2952f9f570c9a061760e MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0 
    

  1. /*
    2. 

  2.  * arch/arm/mach-ep93xx/include/mach/entry-macro.S
    3. 

  3.  * IRQ demultiplexing for EP93xx
    4. 

  4.  *
    5. 

  5.  * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
    6. 

  6.  *
    7. 

  7.  * This program is free software; you can redistribute it and/or modify
    8. 

  8.  * it under the terms of the GNU General Public License as published by
    9. 

  9.  * the Free Software Foundation; either version 2 of the License, or (at
    10. 

  10.  * your option) any later version.
    11. 

  11.  */
    12. 

  12. #include <mach/ep93xx-regs.h>
    13. 

  13. 

  14. 		.macro	disable_fiq
    15. 

  15. 		.endm
    16. 

  16. 

  17. 		.macro  get_irqnr_preamble, base, tmp
    18. 

  18. 		.endm
    19. 

  19. 

  20. 		.macro  arch_ret_to_user, tmp1, tmp2
    21. 

  21. 		.endm
    22. 

  22. 

  23. 		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
    24. 

  24. 		ldr	\base, =(EP93XX_AHB_VIRT_BASE)
    25. 

  25. 		orr	\base, \base, #0x000b0000
    26. 

  26. 		mov	\irqnr, #0
    27. 

  27. 		ldr	\irqstat, [\base]		@ lower 32 interrupts
    28. 

  28. 		cmp	\irqstat, #0
    29. 

  29. 		bne	1001f
    30. 

  30. 

  31. 		eor	\base, \base, #0x00070000
    32. 

  32. 		ldr	\irqstat, [\base]		@ upper 32 interrupts
    33. 

  33. 		cmp	\irqstat, #0
    34. 

  34. 		beq	1002f
    35. 

  35. 		mov	\irqnr, #0x20
    36. 

  36. 

  37. 1001:
    38. 

  38. 		movs	\tmp, \irqstat, lsl #16
    39. 

  39. 		movne	\irqstat, \tmp
    40. 

  40. 		addeq	\irqnr, \irqnr, #16
    41. 

  41. 

  42. 		movs	\tmp, \irqstat, lsl #8
    43. 

  43. 		movne	\irqstat, \tmp
    44. 

  44. 		addeq	\irqnr, \irqnr, #8
    45. 

  45. 

  46. 		movs	\tmp, \irqstat, lsl #4
    47. 

  47. 		movne	\irqstat, \tmp
    48. 

  48. 		addeq	\irqnr, \irqnr, #4
    49. 

  49. 

  50. 		movs	\tmp, \irqstat, lsl #2
    51. 

  51. 		movne	\irqstat, \tmp
    52. 

  52. 		addeq	\irqnr, \irqnr, #2
    53. 

  53. 

  54. 		movs	\tmp, \irqstat, lsl #1
    55. 

  55. 		addeq	\irqnr, \irqnr, #1
    56. 

  56. 		orrs	\base, \base, #1
    57. 

  57. 

  58. 1002:
    59. 

  59. 		.endm
    60. 

  60.