diff options
| author | Subbaraya Sundeep <sbhatta@marvell.com> | 2021-02-11 21:28:29 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-02-11 14:55:03 -0800 |
| commit | 242da439214be9e61b75376d90e71c5c61744c92 (patch) | |
| tree | 36156e666221047d1f4d8520166dedad1d9e374d /drivers/net/ethernet/marvell/octeontx2/af/rpm.h | |
| parent | 91c6945ea1f9059fea886630d0fd8070740e2aaf (diff) | |
octeontx2-af: cn10k: Add support for programmable channels
NIX uses unique channel numbers to identify the packet sources/sinks
like CGX,LBK and SDP. The channel numbers assigned to each block are
hardwired in CN9xxx silicon.
The fixed channel numbers in CN9xxx are:
0x0 | a << 8 | b - LBK(0..3)_CH(0..63)
0x0 | a << 8 - Reserved
0x700 | a - SDP_CH(0..255)
0x800 | a << 8 | b << 4 | c - CGX(0..7)_LMAC(0..3)_CH(0..15)
All the channels in the above fixed enumerator(with maximum
number of blocks) are not required since some chips
have less number of blocks.
For CN10K silicon the channel numbers need to be programmed by
software in each block with the base channel number and range of
channels. This patch calculates and assigns the channel numbers
to efficiently distribute the channel number range(0-4095) among
all the blocks. The assignment is made based on the actual number of
blocks present and also contiguously leaving no holes.
The channel numbers remaining after the math are used as new CPT
replay channels present in CN10K. Also since channel numbers are
not fixed the transmit channel link number needed by AF consumers
is calculated by AF and sent along with nix_lf_alloc mailbox response.
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/marvell/octeontx2/af/rpm.h')
| -rw-r--r-- | drivers/net/ethernet/marvell/octeontx2/af/rpm.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rpm.h b/drivers/net/ethernet/marvell/octeontx2/af/rpm.h index 7f45c1c645bf..1779e8b689e8 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rpm.h +++ b/drivers/net/ethernet/marvell/octeontx2/af/rpm.h @@ -8,6 +8,8 @@ #ifndef RPM_H #define RPM_H +#include <linux/bits.h> + /* PCI device IDs */ #define PCI_DEVID_CN10K_RPM 0xA060 @@ -15,6 +17,10 @@ #define RPMX_CMRX_SW_INT 0x180 #define RPMX_CMRX_SW_INT_W1S 0x188 #define RPMX_CMRX_SW_INT_ENA_W1S 0x198 +#define RPMX_CMRX_LINK_CFG 0x1070 + +#define RPMX_CMRX_LINK_RANGE_MASK GENMASK_ULL(19, 16) +#define RPMX_CMRX_LINK_BASE_MASK GENMASK_ULL(11, 0) #define RPM_LMAC_FWI 0xa |