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net/mlx5: FPGA, Add basic support for Innova

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Mellanox Innova is a NIC with ConnectX and an FPGA on the same
board. The FPGA is a bump-on-the-wire and thus affects operation of
the mlx5_core driver on the ConnectX ASIC.

Add basic support for Innova in mlx5_core.

This allows using the Innova card as a regular NIC, by detecting
the FPGA capability bit, and verifying its load state before
initializing ConnectX interfaces.

Also detect FPGA fatal runtime failures and enter error state if
they ever happen.

All new FPGA-related logic is placed in its own subdirectory 'fpga',
which may be built by selecting CONFIG_MLX5_FPGA.
This prepares for further support of various Innova features in later
patchsets.
Additional details about hardware architecture will be provided as
more features get submitted.

Signed-off-by: Ilan Tayari <ilant@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Ilan Tayari
2017-03-13 20:05:45 +02:00
committed by Saeed Mahameed
parent 0179720d6b
commit e29341fb3a
13 changed files with 640 additions and 3 deletions
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5
include/linux/mlx5/driver.h
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@@ -108,6 +108,8 @@ enum {
MLX5_REG_QTCT = 0x400a,
MLX5_REG_DCBX_PARAM = 0x4020,
MLX5_REG_DCBX_APP = 0x4021,
MLX5_REG_FPGA_CAP = 0x4022,
MLX5_REG_FPGA_CTRL = 0x4023,
MLX5_REG_PCAP = 0x5001,
MLX5_REG_PMTU = 0x5003,
MLX5_REG_PTYS = 0x5004,
@@ -761,6 +763,9 @@ struct mlx5_core_dev {
atomic_t num_qps;
u32 issi;
struct mlx5e_resources mlx5e_res;
#ifdef CONFIG_MLX5_FPGA
struct mlx5_fpga_device *fpga;
#endif
#ifdef CONFIG_RFS_ACCEL
struct cpu_rmap *rmap;
#endif