/drivers/scsi/aacraid/nark.c

http://github.com/mirrors/linux · C · 71 lines · 35 code · 7 blank · 29 comment · 5 complexity · c4d18267e33d9015470145a975c845b0 MD5 · raw file 

    

  1. // SPDX-License-Identifier: GPL-2.0-or-later
    2. 

  2. /*
    3. 

  3.  *	Adaptec AAC series RAID controller driver
    4. 

  4.  *
    5. 

  5.  * based on the old aacraid driver that is..
    6. 

  6.  * Adaptec aacraid device driver for Linux.
    7. 

  7.  *
    8. 

  8.  * Copyright (c) 2000-2010 Adaptec, Inc.
    9. 

  9.  *               2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
    10. 

  10.  *		 2016-2017 Microsemi Corp. (aacraid@microsemi.com)
    11. 

  11.  *
    12. 

  12.  * Module Name:
    13. 

  13.  *  nark.c
    14. 

  14.  *
    15. 

  15.  * Abstract: Hardware Device Interface for NEMER/ARK
    16. 

  16.  */
    17. 

  17. 

  18. #include <linux/pci.h>
    19. 

  19. #include <linux/blkdev.h>
    20. 

  20. 

  21. #include <scsi/scsi_host.h>
    22. 

  22. 

  23. #include "aacraid.h"
    24. 

  24. 

  25. /**
    26. 

  26.  *	aac_nark_ioremap
    27. 

  27.  *	@size: mapping resize request
    28. 

  28.  *
    29. 

  29.  */
    30. 

  30. static int aac_nark_ioremap(struct aac_dev * dev, u32 size)
    31. 

  31. {
    32. 

  32. 	if (!size) {
    33. 

  33. 		iounmap(dev->regs.rx);
    34. 

  34. 		dev->regs.rx = NULL;
    35. 

  35. 		iounmap(dev->base);
    36. 

  36. 		dev->base = NULL;
    37. 

  37. 		return 0;
    38. 

  38. 	}
    39. 

  39. 	dev->base_start = pci_resource_start(dev->pdev, 2);
    40. 

  40. 	dev->regs.rx = ioremap((u64)pci_resource_start(dev->pdev, 0) |
    41. 

  41. 	  ((u64)pci_resource_start(dev->pdev, 1) << 32),
    42. 

  42. 	  sizeof(struct rx_registers) - sizeof(struct rx_inbound));
    43. 

  43. 	dev->base = NULL;
    44. 

  44. 	if (dev->regs.rx == NULL)
    45. 

  45. 		return -1;
    46. 

  46. 	dev->base = ioremap(dev->base_start, size);
    47. 

  47. 	if (dev->base == NULL) {
    48. 

  48. 		iounmap(dev->regs.rx);
    49. 

  49. 		dev->regs.rx = NULL;
    50. 

  50. 		return -1;
    51. 

  51. 	}
    52. 

  52. 	dev->IndexRegs = &((struct rx_registers __iomem *)dev->base)->IndexRegs;
    53. 

  53. 	return 0;
    54. 

  54. }
    55. 

  55. 

  56. /**
    57. 

  57.  *	aac_nark_init	-	initialize an NEMER/ARK Split Bar card
    58. 

  58.  *	@dev: device to configure
    59. 

  59.  *
    60. 

  60.  */
    61. 

  61. 

  62. int aac_nark_init(struct aac_dev * dev)
    63. 

  63. {
    64. 

  64. 	/*
    65. 

  65. 	 *	Fill in the function dispatch table.
    66. 

  66. 	 */
    67. 

  67. 	dev->a_ops.adapter_ioremap = aac_nark_ioremap;
    68. 

  68. 	dev->a_ops.adapter_comm = aac_rx_select_comm;
    69. 

  69. 

  70. 	return _aac_rx_init(dev);
    71. 

  71. }
    72.