From 8701f18504751a5b89be3203e28c5ec04c147167 Mon Sep 17 00:00:00 2001 From: Wayne Boyer Date: Fri, 4 Jun 2010 10:26:50 -0700 Subject: [SCSI] ipr: add endian swap enablement for 64 bit adapters A change in the hardware design of the chip for the new adapters changes the default endianness of MMIO operations. This patch adds a register definition which when written to with a predefined value will change the endianness back to what the driver expects. This patch also fixes two problems found during testing. First, the first reserved field in the ipr_hostrcb64_fabirc_desc structure only reserved one byte. The correct amount to reserve is 2 bytes. Second, the reserved field of the ipr_hostrcb64_error structure only reserved 2 bytes. The correct amount to reserve is 16 bytes. Signed-off-by: Wayne Boyer Acked-by: Brian King Signed-off-by: James Bottomley --- drivers/scsi/ipr.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers/scsi/ipr.h') diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h index b965f3587c9d..ea391ffc8711 100644 --- a/drivers/scsi/ipr.h +++ b/drivers/scsi/ipr.h @@ -996,7 +996,7 @@ struct ipr_hostrcb64_fabric_desc { __be16 length; u8 descriptor_id; - u8 reserved; + u8 reserved[2]; u8 path_state; u8 reserved2[2]; @@ -1054,7 +1054,7 @@ struct ipr_hostrcb64_error { __be64 fd_lun; u8 fd_res_path[8]; __be64 time_stamp; - u8 reserved[2]; + u8 reserved[16]; union { struct ipr_hostrcb_type_ff_error type_ff_error; struct ipr_hostrcb_type_12_error type_12_error; @@ -1254,6 +1254,9 @@ struct ipr_interrupt_offsets { unsigned long dump_addr_reg; unsigned long dump_data_reg; + +#define IPR_ENDIAN_SWAP_KEY 0x000C0C00 + unsigned long endian_swap_reg; }; struct ipr_interrupts { @@ -1279,6 +1282,8 @@ struct ipr_interrupts { void __iomem *dump_addr_reg; void __iomem *dump_data_reg; + + void __iomem *endian_swap_reg; }; struct ipr_chip_cfg_t { -- cgit v1.2.3