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authorPaul Selles <paul.selles@microchip.com>2018-12-06 21:30:52 +0800
committerJon Mason <jdmason@kudzu.us>2019-02-11 07:36:13 -0500
commita2585cdc9e4cda6afaea5f5687eaabce3bebbb2c (patch)
tree69265e8485e481e84ec481e0922321eef7ebe21a /include/linux/switchtec.h
parentd123fab71f63aae129aebe052664fda73131921a (diff)
ntb_hw_switchtec: Added support of >=4G memory windows
Current Switchtec's BAR setup registers are limited to 32bits, corresponding to the maximum MW (memory window) size is <4G. Increase the MW sizes with the addition of the BAR Setup Extension Register for the upper 32bits of a 64bits MW size. This increases the MW range to between 4K and 2^63. Reported-by: Boris Glimcher <boris.glimcher@emc.com> Signed-off-by: Paul Selles <paul.selles@microchip.com> Signed-off-by: Wesley Sheng <wesley.sheng@microchip.com> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
Diffstat (limited to 'include/linux/switchtec.h')
-rw-r--r--include/linux/switchtec.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/switchtec.h b/include/linux/switchtec.h
index 32b282cd0ead..52a079b3a9a6 100644
--- a/include/linux/switchtec.h
+++ b/include/linux/switchtec.h
@@ -248,7 +248,11 @@ struct ntb_ctrl_regs {
u32 win_size;
u64 xlate_addr;
} bar_entry[6];
- u32 reserved2[216];
+ struct {
+ u32 win_size;
+ u32 reserved[3];
+ } bar_ext_entry[6];
+ u32 reserved2[192];
u32 req_id_table[512];
u32 reserved3[256];
u64 lut_entry[512];