diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/chip.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/chip.c | 51 |
1 files changed, 35 insertions, 16 deletions
diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c index e6a60fa59f2b..cb9095d2cbc9 100644 --- a/drivers/infiniband/hw/hfi1/chip.c +++ b/drivers/infiniband/hw/hfi1/chip.c @@ -1032,8 +1032,8 @@ static void read_vc_remote_fabric(struct hfi1_devdata *dd, u8 *vau, u8 *z, u8 *vcu, u16 *vl15buf, u8 *crc_sizes); static void read_vc_remote_link_width(struct hfi1_devdata *dd, u8 *remote_tx_rate, u16 *link_widths); -static void read_vc_local_link_width(struct hfi1_devdata *dd, u8 *misc_bits, - u8 *flag_bits, u16 *link_widths); +static void read_vc_local_link_mode(struct hfi1_devdata *dd, u8 *misc_bits, + u8 *flag_bits, u16 *link_widths); static void read_remote_device_id(struct hfi1_devdata *dd, u16 *device_id, u8 *device_rev); static void read_local_lni(struct hfi1_devdata *dd, u8 *enable_lane_rx); @@ -6351,6 +6351,18 @@ static void handle_8051_request(struct hfi1_pportdata *ppd) type); hreq_response(dd, HREQ_NOT_SUPPORTED, 0); break; + case HREQ_LCB_RESET: + /* Put the LCB, RX FPE and TX FPE into reset */ + write_csr(dd, DCC_CFG_RESET, LCB_RX_FPE_TX_FPE_INTO_RESET); + /* Make sure the write completed */ + (void)read_csr(dd, DCC_CFG_RESET); + /* Hold the reset long enough to take effect */ + udelay(1); + /* Take the LCB, RX FPE and TX FPE out of reset */ + write_csr(dd, DCC_CFG_RESET, LCB_RX_FPE_TX_FPE_OUT_OF_RESET); + hreq_response(dd, HREQ_SUCCESS, 0); + + break; case HREQ_CONFIG_DONE: hreq_response(dd, HREQ_SUCCESS, 0); break; @@ -6461,8 +6473,7 @@ static void lcb_shutdown(struct hfi1_devdata *dd, int abort) dd->lcb_err_en = read_csr(dd, DC_LCB_ERR_EN); reg = read_csr(dd, DCC_CFG_RESET); write_csr(dd, DCC_CFG_RESET, reg | - (1ull << DCC_CFG_RESET_RESET_LCB_SHIFT) | - (1ull << DCC_CFG_RESET_RESET_RX_FPE_SHIFT)); + DCC_CFG_RESET_RESET_LCB | DCC_CFG_RESET_RESET_RX_FPE); (void)read_csr(dd, DCC_CFG_RESET); /* make sure the write completed */ if (!abort) { udelay(1); /* must hold for the longer of 16cclks or 20ns */ @@ -6527,7 +6538,7 @@ static void _dc_start(struct hfi1_devdata *dd) __func__); /* Take away reset for LCB and RX FPE (set in lcb_shutdown). */ - write_csr(dd, DCC_CFG_RESET, 0x10); + write_csr(dd, DCC_CFG_RESET, LCB_RX_FPE_TX_FPE_OUT_OF_RESET); /* lcb_shutdown() with abort=1 does not restore these */ write_csr(dd, DC_LCB_ERR_EN, dd->lcb_err_en); dd->dc_shutdown = 0; @@ -7348,7 +7359,7 @@ static void get_linkup_widths(struct hfi1_devdata *dd, u16 *tx_width, u8 misc_bits, local_flags; u16 active_tx, active_rx; - read_vc_local_link_width(dd, &misc_bits, &local_flags, &widths); + read_vc_local_link_mode(dd, &misc_bits, &local_flags, &widths); tx = widths >> 12; rx = (widths >> 8) & 0xf; @@ -8820,29 +8831,29 @@ static int write_vc_local_fabric(struct hfi1_devdata *dd, u8 vau, u8 z, u8 vcu, GENERAL_CONFIG, frame); } -static void read_vc_local_link_width(struct hfi1_devdata *dd, u8 *misc_bits, - u8 *flag_bits, u16 *link_widths) +static void read_vc_local_link_mode(struct hfi1_devdata *dd, u8 *misc_bits, + u8 *flag_bits, u16 *link_widths) { u32 frame; - read_8051_config(dd, VERIFY_CAP_LOCAL_LINK_WIDTH, GENERAL_CONFIG, + read_8051_config(dd, VERIFY_CAP_LOCAL_LINK_MODE, GENERAL_CONFIG, &frame); *misc_bits = (frame >> MISC_CONFIG_BITS_SHIFT) & MISC_CONFIG_BITS_MASK; *flag_bits = (frame >> LOCAL_FLAG_BITS_SHIFT) & LOCAL_FLAG_BITS_MASK; *link_widths = (frame >> LINK_WIDTH_SHIFT) & LINK_WIDTH_MASK; } -static int write_vc_local_link_width(struct hfi1_devdata *dd, - u8 misc_bits, - u8 flag_bits, - u16 link_widths) +static int write_vc_local_link_mode(struct hfi1_devdata *dd, + u8 misc_bits, + u8 flag_bits, + u16 link_widths) { u32 frame; frame = (u32)misc_bits << MISC_CONFIG_BITS_SHIFT | (u32)flag_bits << LOCAL_FLAG_BITS_SHIFT | (u32)link_widths << LINK_WIDTH_SHIFT; - return load_8051_config(dd, VERIFY_CAP_LOCAL_LINK_WIDTH, GENERAL_CONFIG, + return load_8051_config(dd, VERIFY_CAP_LOCAL_LINK_MODE, GENERAL_CONFIG, frame); } @@ -9312,8 +9323,16 @@ static int set_local_link_attributes(struct hfi1_pportdata *ppd) if (loopback == LOOPBACK_SERDES) misc_bits |= 1 << LOOPBACK_SERDES_CONFIG_BIT_MASK_SHIFT; - ret = write_vc_local_link_width(dd, misc_bits, 0, - opa_to_vc_link_widths( + /* + * An external device configuration request is used to reset the LCB + * to retry to obtain operational lanes when the first attempt is + * unsuccesful. + */ + if (dd->dc8051_ver >= dc8051_ver(1, 25, 0)) + misc_bits |= 1 << EXT_CFG_LCB_RESET_SUPPORTED_SHIFT; + + ret = write_vc_local_link_mode(dd, misc_bits, 0, + opa_to_vc_link_widths( ppd->link_width_enabled)); if (ret != HCMD_SUCCESS) goto set_local_link_attributes_fail; |
