diff options
Diffstat (limited to 'drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c')
| -rw-r--r-- | drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c | 110 |
1 files changed, 108 insertions, 2 deletions
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c index 2ad3fa6316ce..881caa8ee319 100644 --- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c +++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c @@ -1,7 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-only /* * aQuantia Corporation Network Driver - * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved + * Copyright (C) 2014-2019 aQuantia Corporation. All rights reserved */ /* File hw_atl_b0.c: Definition of Atlantic hardware specific functions. */ @@ -49,6 +49,8 @@ .mac_regs_count = 88, \ .hw_alive_check_addr = 0x10U +#define FRAC_PER_NS 0x100000000LL + const struct aq_hw_caps_s hw_atl_b0_caps_aqc100 = { DEFAULT_B0_BOARD_BASIC_CAPABILITIES, .media_type = AQ_HW_MEDIA_TYPE_FIBRE, @@ -1005,6 +1007,104 @@ static int hw_atl_b0_hw_ring_rx_stop(struct aq_hw_s *self, return aq_hw_err_from_flags(self); } +#define get_ptp_ts_val_u64(self, indx) \ + ((u64)(hw_atl_pcs_ptp_clock_get(self, indx) & 0xffff)) + +static void hw_atl_b0_get_ptp_ts(struct aq_hw_s *self, u64 *stamp) +{ + u64 ns; + + hw_atl_pcs_ptp_clock_read_enable(self, 1); + hw_atl_pcs_ptp_clock_read_enable(self, 0); + ns = (get_ptp_ts_val_u64(self, 0) + + (get_ptp_ts_val_u64(self, 1) << 16)) * NSEC_PER_SEC + + (get_ptp_ts_val_u64(self, 3) + + (get_ptp_ts_val_u64(self, 4) << 16)); + + *stamp = ns + self->ptp_clk_offset; +} + +static void hw_atl_b0_adj_params_get(u64 freq, s64 adj, u32 *ns, u32 *fns) +{ + /* For accuracy, the digit is extended */ + s64 base_ns = ((adj + NSEC_PER_SEC) * NSEC_PER_SEC); + u64 nsi_frac = 0; + u64 nsi; + + base_ns = div64_s64(base_ns, freq); + nsi = div64_u64(base_ns, NSEC_PER_SEC); + + if (base_ns != nsi * NSEC_PER_SEC) { + s64 divisor = div64_s64((s64)NSEC_PER_SEC * NSEC_PER_SEC, + base_ns - nsi * NSEC_PER_SEC); + nsi_frac = div64_s64(FRAC_PER_NS * NSEC_PER_SEC, divisor); + } + + *ns = (u32)nsi; + *fns = (u32)nsi_frac; +} + +static void +hw_atl_b0_mac_adj_param_calc(struct hw_fw_request_ptp_adj_freq *ptp_adj_freq, + u64 phyfreq, u64 macfreq) +{ + s64 adj_fns_val; + s64 fns_in_sec_phy = phyfreq * (ptp_adj_freq->fns_phy + + FRAC_PER_NS * ptp_adj_freq->ns_phy); + s64 fns_in_sec_mac = macfreq * (ptp_adj_freq->fns_mac + + FRAC_PER_NS * ptp_adj_freq->ns_mac); + s64 fault_in_sec_phy = FRAC_PER_NS * NSEC_PER_SEC - fns_in_sec_phy; + s64 fault_in_sec_mac = FRAC_PER_NS * NSEC_PER_SEC - fns_in_sec_mac; + /* MAC MCP counter freq is macfreq / 4 */ + s64 diff_in_mcp_overflow = (fault_in_sec_mac - fault_in_sec_phy) * + 4 * FRAC_PER_NS; + + diff_in_mcp_overflow = div64_s64(diff_in_mcp_overflow, + AQ_HW_MAC_COUNTER_HZ); + adj_fns_val = (ptp_adj_freq->fns_mac + FRAC_PER_NS * + ptp_adj_freq->ns_mac) + diff_in_mcp_overflow; + + ptp_adj_freq->mac_ns_adj = div64_s64(adj_fns_val, FRAC_PER_NS); + ptp_adj_freq->mac_fns_adj = adj_fns_val - ptp_adj_freq->mac_ns_adj * + FRAC_PER_NS; +} + +static int hw_atl_b0_adj_sys_clock(struct aq_hw_s *self, s64 delta) +{ + self->ptp_clk_offset += delta; + + return 0; +} + +static int hw_atl_b0_set_sys_clock(struct aq_hw_s *self, u64 time, u64 ts) +{ + s64 delta = time - (self->ptp_clk_offset + ts); + + return hw_atl_b0_adj_sys_clock(self, delta); +} + +static int hw_atl_b0_adj_clock_freq(struct aq_hw_s *self, s32 ppb) +{ + struct hw_fw_request_iface fwreq; + size_t size; + + memset(&fwreq, 0, sizeof(fwreq)); + + fwreq.msg_id = HW_AQ_FW_REQUEST_PTP_ADJ_FREQ; + hw_atl_b0_adj_params_get(AQ_HW_MAC_COUNTER_HZ, ppb, + &fwreq.ptp_adj_freq.ns_mac, + &fwreq.ptp_adj_freq.fns_mac); + hw_atl_b0_adj_params_get(AQ_HW_PHY_COUNTER_HZ, ppb, + &fwreq.ptp_adj_freq.ns_phy, + &fwreq.ptp_adj_freq.fns_phy); + hw_atl_b0_mac_adj_param_calc(&fwreq.ptp_adj_freq, + AQ_HW_PHY_COUNTER_HZ, + AQ_HW_MAC_COUNTER_HZ); + + size = sizeof(fwreq.msg_id) + sizeof(fwreq.ptp_adj_freq); + return self->aq_fw_ops->send_fw_request(self, &fwreq, size); +} + static int hw_atl_b0_hw_fl3l4_clear(struct aq_hw_s *self, struct aq_rx_filter_l3l4 *data) { @@ -1177,6 +1277,12 @@ const struct aq_hw_ops hw_atl_ops_b0 = { .hw_get_regs = hw_atl_utils_hw_get_regs, .hw_get_hw_stats = hw_atl_utils_get_hw_stats, .hw_get_fw_version = hw_atl_utils_get_fw_version, - .hw_set_offload = hw_atl_b0_hw_offload_set, + + .hw_get_ptp_ts = hw_atl_b0_get_ptp_ts, + .hw_adj_sys_clock = hw_atl_b0_adj_sys_clock, + .hw_set_sys_clock = hw_atl_b0_set_sys_clock, + .hw_adj_clock_freq = hw_atl_b0_adj_clock_freq, + + .hw_set_offload = hw_atl_b0_hw_offload_set, .hw_set_fc = hw_atl_b0_set_fc, }; |