diff options
| author | Raghu Vatsavayi <rvatsavayi@caviumnetworks.com> | 2016-11-29 03:54:36 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-30 19:03:08 +0300 |
| commit | c865cdf13ac83d4e66e9f84f95252830180efb98 (patch) | |
| tree | 996dc7bdadc2b2136c93685def3d8722b381f9cc /drivers/net/ethernet/cavium/liquidio/octeon_device.c | |
| parent | 69c69da33d1d01b81eb56ac42142daa01777abd6 (diff) | |
| download | linux-c865cdf13ac83d4e66e9f84f95252830180efb98.tar.xz | |
liquidio CN23XX: VF queue setup
Adds support for configuring VF input/output queues.
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com>
Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com>
Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com>
Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cavium/liquidio/octeon_device.c')
| -rw-r--r-- | drivers/net/ethernet/cavium/liquidio/octeon_device.c | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_device.c b/drivers/net/ethernet/cavium/liquidio/octeon_device.c index 7e6c8b857406..fe84e9060b6b 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_device.c +++ b/drivers/net/ethernet/cavium/liquidio/octeon_device.c @@ -860,12 +860,53 @@ int octeon_setup_output_queues(struct octeon_device *oct) return 0; } -void octeon_set_io_queues_off(struct octeon_device *oct) +int octeon_set_io_queues_off(struct octeon_device *oct) { + int loop = BUSY_READING_REG_VF_LOOP_COUNT; + if (OCTEON_CN6XXX(oct)) { octeon_write_csr(oct, CN6XXX_SLI_PKT_INSTR_ENB, 0); octeon_write_csr(oct, CN6XXX_SLI_PKT_OUT_ENB, 0); + } else if (oct->chip_id == OCTEON_CN23XX_VF_VID) { + u32 q_no; + + /* IOQs will already be in reset. + * If RST bit is set, wait for quiet bit to be set. + * Once quiet bit is set, clear the RST bit. + */ + for (q_no = 0; q_no < oct->sriov_info.rings_per_vf; q_no++) { + u64 reg_val = octeon_read_csr64( + oct, CN23XX_VF_SLI_IQ_PKT_CONTROL64(q_no)); + + while ((reg_val & CN23XX_PKT_INPUT_CTL_RST) && + !(reg_val & CN23XX_PKT_INPUT_CTL_QUIET) && + loop) { + reg_val = octeon_read_csr64( + oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no)); + loop--; + } + if (!loop) { + dev_err(&oct->pci_dev->dev, + "clearing the reset reg failed or setting the quiet reg failed for qno: %u\n", + q_no); + return -1; + } + + reg_val = reg_val & ~CN23XX_PKT_INPUT_CTL_RST; + octeon_write_csr64(oct, + CN23XX_SLI_IQ_PKT_CONTROL64(q_no), + reg_val); + + reg_val = octeon_read_csr64( + oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no)); + if (reg_val & CN23XX_PKT_INPUT_CTL_RST) { + dev_err(&oct->pci_dev->dev, + "unable to reset qno %u\n", q_no); + return -1; + } + } } + return 0; } void octeon_set_droq_pkt_op(struct octeon_device *oct, |