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| author | Wayne Boyer <wayneb@linux.vnet.ibm.com> | 2010-06-04 19:26:50 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-27 19:01:30 +0200 |
| commit | 8701f18504751a5b89be3203e28c5ec04c147167 (patch) | |
| tree | 58f15f58a76ce73e1d92c72a21c19b350b8ded30 /drivers/scsi/ipr.h | |
| parent | [SCSI] dpt_i2o: Use GFP_ATOMIC when a lock is held (diff) | |
| download | linux-8701f18504751a5b89be3203e28c5ec04c147167.tar.xz linux-8701f18504751a5b89be3203e28c5ec04c147167.zip | |
[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 <wayneb@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/ipr.h')
| -rw-r--r-- | drivers/scsi/ipr.h | 9 |
1 files changed, 7 insertions, 2 deletions
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 { |