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| author | Haiyang Zhang <haiyangz@microsoft.com> | 2024-06-17 22:17:26 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-06-19 03:21:18 +0200 |
| commit | 382d1741b5b2feffef7942dd074206372afe1a96 (patch) | |
| tree | b303eb04982881fcddbc510c22697a7437103062 /include/net | |
| parent | Merge branch 'net-mlx4_en-use-ethtool_puts-sprintf' (diff) | |
| download | linux-382d1741b5b2feffef7942dd074206372afe1a96.tar.xz linux-382d1741b5b2feffef7942dd074206372afe1a96.zip | |
net: mana: Add support for page sizes other than 4KB on ARM64
As defined by the MANA Hardware spec, the queue size for DMA is 4KB
minimal, and power of 2. And, the HWC queue size has to be exactly
4KB.
To support page sizes other than 4KB on ARM64, define the minimal
queue size as a macro separately from the PAGE_SIZE, which we always
assumed it to be 4KB before supporting ARM64.
Also, add MANA specific macros and update code related to size
alignment, DMA region calculations, etc.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Link: https://lore.kernel.org/r/1718655446-6576-1-git-send-email-haiyangz@microsoft.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/mana/gdma.h | 10 | ||||
| -rw-r--r-- | include/net/mana/mana.h | 3 |
2 files changed, 11 insertions, 2 deletions
diff --git a/include/net/mana/gdma.h b/include/net/mana/gdma.h index c547756c4284..83963d9e804d 100644 --- a/include/net/mana/gdma.h +++ b/include/net/mana/gdma.h @@ -224,7 +224,15 @@ struct gdma_dev { struct auxiliary_device *adev; }; -#define MINIMUM_SUPPORTED_PAGE_SIZE PAGE_SIZE +/* MANA_PAGE_SIZE is the DMA unit */ +#define MANA_PAGE_SHIFT 12 +#define MANA_PAGE_SIZE BIT(MANA_PAGE_SHIFT) +#define MANA_PAGE_ALIGN(x) ALIGN((x), MANA_PAGE_SIZE) +#define MANA_PAGE_ALIGNED(addr) IS_ALIGNED((unsigned long)(addr), MANA_PAGE_SIZE) +#define MANA_PFN(a) ((a) >> MANA_PAGE_SHIFT) + +/* Required by HW */ +#define MANA_MIN_QSIZE MANA_PAGE_SIZE #define GDMA_CQE_SIZE 64 #define GDMA_EQE_SIZE 16 diff --git a/include/net/mana/mana.h b/include/net/mana/mana.h index 59823901b74f..e39b8676fe54 100644 --- a/include/net/mana/mana.h +++ b/include/net/mana/mana.h @@ -42,7 +42,8 @@ enum TRI_STATE { #define MAX_SEND_BUFFERS_PER_QUEUE 256 -#define EQ_SIZE (8 * PAGE_SIZE) +#define EQ_SIZE (8 * MANA_PAGE_SIZE) + #define LOG2_EQ_THROTTLE 3 #define MAX_PORTS_IN_MANA_DEV 256 |