diff options
Diffstat (limited to 'drivers/dma/idxd/registers.h')
| -rw-r--r-- | drivers/dma/idxd/registers.h | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/dma/idxd/registers.h b/drivers/dma/idxd/registers.h index a39e7ae6b3d9..54390334c243 100644 --- a/drivers/dma/idxd/registers.h +++ b/drivers/dma/idxd/registers.h @@ -8,7 +8,7 @@ #define IDXD_MMIO_BAR 0 #define IDXD_WQ_BAR 2 -#define IDXD_PORTAL_SIZE 0x4000 +#define IDXD_PORTAL_SIZE PAGE_SIZE /* MMIO Device BAR0 Registers */ #define IDXD_VER_OFFSET 0x00 @@ -43,7 +43,8 @@ union wq_cap_reg { struct { u64 total_wq_size:16; u64 num_wqs:8; - u64 rsvd:24; + u64 wqcfg_size:4; + u64 rsvd:20; u64 shared_mode:1; u64 dedicated_mode:1; u64 rsvd2:1; @@ -55,6 +56,7 @@ union wq_cap_reg { u64 bits; } __packed; #define IDXD_WQCAP_OFFSET 0x20 +#define IDXD_WQCFG_MIN 5 union group_cap_reg { struct { @@ -333,4 +335,23 @@ union wqcfg { }; u32 bits[8]; } __packed; + +/* + * This macro calculates the offset into the WQCFG register + * idxd - struct idxd * + * n - wq id + * ofs - the index of the 32b dword for the config register + * + * The WQCFG register block is divided into groups per each wq. The n index + * allows us to move to the register group that's for that particular wq. + * Each register is 32bits. The ofs gives us the number of register to access. + */ +#define WQCFG_OFFSET(_idxd_dev, n, ofs) \ +({\ + typeof(_idxd_dev) __idxd_dev = (_idxd_dev); \ + (__idxd_dev)->wqcfg_offset + (n) * (__idxd_dev)->wqcfg_size + sizeof(u32) * (ofs); \ +}) + +#define WQCFG_STRIDES(_idxd_dev) ((_idxd_dev)->wqcfg_size / sizeof(u32)) + #endif |