diff options
| author |   Aaro Koskinen <aaro.koskinen@iki.fi> | 2016-08-31 23:57:44 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-02 14:46:53 +0200 |
| commit | 5cf9b1ca7be93f6e92dee955eeb274575e5ab40e (patch) | |
| tree | f3b489a1fa4f4b3118341ccf54e838f6faf7b01f /drivers/staging/octeon | |
| parent | staging: octeon: support enabling multiple rx groups (diff) | |
| download | linux-dev-5cf9b1ca7be93f6e92dee955eeb274575e5ab40e.tar.xz linux-dev-5cf9b1ca7be93f6e92dee955eeb274575e5ab40e.zip | |
staging: octeon: enable taking multiple rx groups into use
Enable taking multiple RX groups into use.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/octeon')
| -rw-r--r-- | drivers/staging/octeon/ethernet.c | 49 |
1 files changed, 47 insertions, 2 deletions
diff --git a/drivers/staging/octeon/ethernet.c b/drivers/staging/octeon/ethernet.c index 7d487452bddb..8d51f0584be5 100644 --- a/drivers/staging/octeon/ethernet.c +++ b/drivers/staging/octeon/ethernet.c @@ -53,6 +53,15 @@ MODULE_PARM_DESC(pow_receive_group, "\n" "\tgroup. Also any other software can submit packets to this\n" "\tgroup for the kernel to process."); +static int receive_group_order; +module_param(receive_group_order, int, 0444); +MODULE_PARM_DESC(receive_group_order, "\n" + "\tOrder (0..4) of receive groups to take into use. Ethernet hardware\n" + "\twill be configured to send incoming packets to multiple POW\n" + "\tgroups. pow_receive_group parameter is ignored when multiple\n" + "\tgroups are taken into use and groups are allocated starting\n" + "\tfrom 0. By default, a single group is used.\n"); + int pow_send_group = -1; module_param(pow_send_group, int, 0644); MODULE_PARM_DESC(pow_send_group, "\n" @@ -680,7 +689,13 @@ static int cvm_oct_probe(struct platform_device *pdev) cvmx_helper_initialize_packet_io_global(); - pow_receive_groups = BIT(pow_receive_group); + if (receive_group_order) { + if (receive_group_order > 4) + receive_group_order = 4; + pow_receive_groups = (1 << (1 << receive_group_order)) - 1; + } else { + pow_receive_groups = BIT(pow_receive_group); + } /* Change the input group for all ports before input is enabled */ num_interfaces = cvmx_helper_get_number_of_interfaces(); @@ -695,7 +710,37 @@ static int cvm_oct_probe(struct platform_device *pdev) pip_prt_tagx.u64 = cvmx_read_csr(CVMX_PIP_PRT_TAGX(port)); - pip_prt_tagx.s.grp = pow_receive_group; + + if (receive_group_order) { + int tag_mask; + + /* We support only 16 groups at the moment, so + * always disable the two additional "hidden" + * tag_mask bits on CN68XX. + */ + if (OCTEON_IS_MODEL(OCTEON_CN68XX)) + pip_prt_tagx.u64 |= 0x3ull << 44; + + tag_mask = ~((1 << receive_group_order) - 1); + pip_prt_tagx.s.grptagbase = 0; + pip_prt_tagx.s.grptagmask = tag_mask; + pip_prt_tagx.s.grptag = 1; + pip_prt_tagx.s.tag_mode = 0; + pip_prt_tagx.s.inc_prt_flag = 1; + pip_prt_tagx.s.ip6_dprt_flag = 1; + pip_prt_tagx.s.ip4_dprt_flag = 1; + pip_prt_tagx.s.ip6_sprt_flag = 1; + pip_prt_tagx.s.ip4_sprt_flag = 1; + pip_prt_tagx.s.ip6_dst_flag = 1; + pip_prt_tagx.s.ip4_dst_flag = 1; + pip_prt_tagx.s.ip6_src_flag = 1; + pip_prt_tagx.s.ip4_src_flag = 1; + pip_prt_tagx.s.grp = 0; + } else { + pip_prt_tagx.s.grptag = 0; + pip_prt_tagx.s.grp = pow_receive_group; + } + cvmx_write_csr(CVMX_PIP_PRT_TAGX(port), pip_prt_tagx.u64); } |