/* Low level functions for interacting with and managing the device clock used * for the Precision Time Protocol. * * The ice hardware represents the current time using three registers: * * GLTSYN_TIME_H GLTSYN_TIME_L GLTSYN_TIME_R * +---------------+ +---------------+ +---------------+ * | 32 bits | | 32 bits | | 32 bits | * +---------------+ +---------------+ +---------------+ * * The registers are incremented every clock tick using a 40bit increment * value defined over two registers: * * GLTSYN_INCVAL_H GLTSYN_INCVAL_L * +---------------+ +---------------+ * | 8 bit s | | 32 bits | * +---------------+ +---------------+ * * The increment value is added to the GLTSYN_TIME_R and GLTSYN_TIME_L * registers every clock source tick. Depending on the specific device * configuration, the clock source frequency could be one of a number of * values. * * For E810 devices, the increment frequency is 812.5 MHz * * For E822 devices the clock can be derived from different sources, and the * increment has an effective frequency of one of the following: * - 823.4375 MHz * - 783.36 MHz * - 796.875 MHz * - 816 MHz * - 830.078125 MHz * - 783.36 MHz * * The hardware captures timestamps in the PHY for incoming packets, and for * outgoing packets on request. To support this, the PHY maintains a timer * that matches the lower 64 bits of the global source timer. * * In order to ensure that the PHY timers and the source timer are equivalent, * shadow registers are used to prepare the desired initial values. A special * sync command is issued to trigger copying from the shadow registers into * the appropriate source and PHY registers simultaneously. * * The driver supports devices which have different PHYs with subtly different * mechanisms to program and control the timers. We divide the devices into * families named after the first major device, E810 and similar devices, and * E822 and similar devices. * * - E822 based devices have additional support for fine grained Vernier * calibration which requires significant setup * - The layout of timestamp data in the PHY register blocks is different * - The way timer synchronization commands are issued is different. * * To support this, very low level functions have an e810 or e822 suffix * indicating what type of device they work on. Higher level abstractions for * tasks that can be done on both devices do not have the suffix and will * correctly look up the appropriate low level function when running. * * Functions which only make sense on a single device family may not have * a suitable generic implementation
*/
/** * ice_get_ptp_src_clock_index - determine source clock index * @hw: pointer to HW struct * * Determine the source clock index currently in use, based on device * capabilities reported during initialization.
*/
u8 ice_get_ptp_src_clock_index(struct ice_hw *hw)
{ return hw->func_caps.ts_func_info.tmr_index_assoc;
}
/** * ice_ptp_read_src_incval - Read source timer increment value * @hw: pointer to HW struct * * Read the increment value of the source timer and return it.
*/ static u64 ice_ptp_read_src_incval(struct ice_hw *hw)
{
u32 lo, hi;
u8 tmr_idx;
tmr_idx = ice_get_ptp_src_clock_index(hw);
lo = rd32(hw, GLTSYN_INCVAL_L(tmr_idx));
hi = rd32(hw, GLTSYN_INCVAL_H(tmr_idx));
return ((u64)(hi & INCVAL_HIGH_M) << 32) | lo;
}
/** * ice_ptp_tmr_cmd_to_src_reg - Convert to source timer command value * @hw: pointer to HW struct * @cmd: Timer command * * Return: the source timer command register value for the given PTP timer * command.
*/ static u32 ice_ptp_tmr_cmd_to_src_reg(struct ice_hw *hw, enum ice_ptp_tmr_cmd cmd)
{
u32 cmd_val, tmr_idx;
switch (cmd) { case ICE_PTP_INIT_TIME:
cmd_val = GLTSYN_CMD_INIT_TIME; break; case ICE_PTP_INIT_INCVAL:
cmd_val = GLTSYN_CMD_INIT_INCVAL; break; case ICE_PTP_ADJ_TIME:
cmd_val = GLTSYN_CMD_ADJ_TIME; break; case ICE_PTP_ADJ_TIME_AT_TIME:
cmd_val = GLTSYN_CMD_ADJ_INIT_TIME; break; case ICE_PTP_NOP: case ICE_PTP_READ_TIME:
cmd_val = GLTSYN_CMD_READ_TIME; break; default:
dev_warn(ice_hw_to_dev(hw), "Ignoring unrecognized timer command %u\n", cmd);
cmd_val = 0;
}
tmr_idx = ice_get_ptp_src_clock_index(hw);
return tmr_idx << SEL_CPK_SRC | cmd_val;
}
/** * ice_ptp_tmr_cmd_to_port_reg- Convert to port timer command value * @hw: pointer to HW struct * @cmd: Timer command * * Note that some hardware families use a different command register value for * the PHY ports, while other hardware families use the same register values * as the source timer. * * Return: the PHY port timer command register value for the given PTP timer * command.
*/ static u32 ice_ptp_tmr_cmd_to_port_reg(struct ice_hw *hw, enum ice_ptp_tmr_cmd cmd)
{
u32 cmd_val, tmr_idx;
/* Certain hardware families share the same register values for the * port register and source timer register.
*/ switch (hw->mac_type) { case ICE_MAC_E810: case ICE_MAC_E830: return ice_ptp_tmr_cmd_to_src_reg(hw, cmd) & TS_CMD_MASK_E810; default: break;
}
switch (cmd) { case ICE_PTP_INIT_TIME:
cmd_val = PHY_CMD_INIT_TIME; break; case ICE_PTP_INIT_INCVAL:
cmd_val = PHY_CMD_INIT_INCVAL; break; case ICE_PTP_ADJ_TIME:
cmd_val = PHY_CMD_ADJ_TIME; break; case ICE_PTP_ADJ_TIME_AT_TIME:
cmd_val = PHY_CMD_ADJ_TIME_AT_TIME; break; case ICE_PTP_READ_TIME:
cmd_val = PHY_CMD_READ_TIME; break; case ICE_PTP_NOP:
cmd_val = 0; break; default:
dev_warn(ice_hw_to_dev(hw), "Ignoring unrecognized timer command %u\n", cmd);
cmd_val = 0;
}
tmr_idx = ice_get_ptp_src_clock_index(hw);
return tmr_idx << SEL_PHY_SRC | cmd_val;
}
/** * ice_ptp_src_cmd - Prepare source timer for a timer command * @hw: pointer to HW structure * @cmd: Timer command * * Prepare the source timer for an upcoming timer sync command.
*/ void ice_ptp_src_cmd(struct ice_hw *hw, enum ice_ptp_tmr_cmd cmd)
{ struct ice_pf *pf = container_of(hw, struct ice_pf, hw);
u32 cmd_val = ice_ptp_tmr_cmd_to_src_reg(hw, cmd);
if (!ice_is_primary(hw))
hw = ice_get_primary_hw(pf);
wr32(hw, GLTSYN_CMD, cmd_val);
}
/** * ice_ptp_exec_tmr_cmd - Execute all prepared timer commands * @hw: pointer to HW struct * * Write the SYNC_EXEC_CMD bit to the GLTSYN_CMD_SYNC register, and flush the * write immediately. This triggers the hardware to begin executing all of the * source and PHY timer commands synchronously.
*/ staticvoid ice_ptp_exec_tmr_cmd(struct ice_hw *hw)
{ struct ice_pf *pf = container_of(hw, struct ice_pf, hw);
if (!ice_is_primary(hw))
hw = ice_get_primary_hw(pf);
/** * ice_ptp_cfg_sync_delay - Configure PHC to PHY synchronization delay * @hw: pointer to HW struct * @delay: delay between PHC and PHY SYNC command execution in nanoseconds
*/ staticvoid ice_ptp_cfg_sync_delay(conststruct ice_hw *hw, u32 delay)
{
wr32(hw, GLTSYN_SYNC_DLAY, delay);
ice_flush(hw);
}
/* 56G PHY device functions * * The following functions operate on devices with the ETH 56G PHY.
*/
/** * ice_ptp_get_dest_dev_e825 - get destination PHY for given port number * @hw: pointer to the HW struct * @port: destination port * * Return: destination sideband queue PHY device.
*/ staticenum ice_sbq_dev_id ice_ptp_get_dest_dev_e825(struct ice_hw *hw,
u8 port)
{
u8 curr_phy, tgt_phy;
tgt_phy = port >= hw->ptp.ports_per_phy;
curr_phy = hw->lane_num >= hw->ptp.ports_per_phy; /* In the driver, lanes 4..7 are in fact 0..3 on a second PHY. * On a single complex E825C, PHY 0 is always destination device phy_0 * and PHY 1 is phy_0_peer. * On dual complex E825C, device phy_0 points to PHY on a current * complex and phy_0_peer to PHY on a different complex.
*/ if ((!ice_is_dual(hw) && tgt_phy == 1) ||
(ice_is_dual(hw) && tgt_phy != curr_phy)) return ice_sbq_dev_phy_0_peer; else return ice_sbq_dev_phy_0;
}
/** * ice_write_phy_eth56g - Write a PHY port register * @hw: pointer to the HW struct * @port: destination port * @addr: PHY register address * @val: Value to write * * Return: 0 on success, other error codes when failed to write to PHY
*/ staticint ice_write_phy_eth56g(struct ice_hw *hw, u8 port, u32 addr, u32 val)
{ struct ice_sbq_msg_input msg = {
.dest_dev = ice_ptp_get_dest_dev_e825(hw, port),
.opcode = ice_sbq_msg_wr,
.msg_addr_low = lower_16_bits(addr),
.msg_addr_high = upper_16_bits(addr),
.data = val
}; int err;
err = ice_sbq_rw_reg(hw, &msg, LIBIE_AQ_FLAG_RD); if (err)
ice_debug(hw, ICE_DBG_PTP, "PTP failed to send msg to phy %d\n",
err);
return err;
}
/** * ice_read_phy_eth56g - Read a PHY port register * @hw: pointer to the HW struct * @port: destination port * @addr: PHY register address * @val: Value to write * * Return: 0 on success, other error codes when failed to read from PHY
*/ staticint ice_read_phy_eth56g(struct ice_hw *hw, u8 port, u32 addr, u32 *val)
{ struct ice_sbq_msg_input msg = {
.dest_dev = ice_ptp_get_dest_dev_e825(hw, port),
.opcode = ice_sbq_msg_rd,
.msg_addr_low = lower_16_bits(addr),
.msg_addr_high = upper_16_bits(addr)
}; int err;
err = ice_sbq_rw_reg(hw, &msg, LIBIE_AQ_FLAG_RD); if (err)
ice_debug(hw, ICE_DBG_PTP, "PTP failed to send msg to phy %d\n",
err); else
*val = msg.data;
return err;
}
/** * ice_phy_res_address_eth56g - Calculate a PHY port register address * @hw: pointer to the HW struct * @lane: Lane number to be written * @res_type: resource type (register/memory) * @offset: Offset from PHY port register base * @addr: The result address * * Return: * * %0 - success * * %EINVAL - invalid port number or resource type
*/ staticint ice_phy_res_address_eth56g(struct ice_hw *hw, u8 lane, enum eth56g_res_type res_type,
u32 offset,
u32 *addr)
{ if (res_type >= NUM_ETH56G_PHY_RES) return -EINVAL;
/* Lanes 4..7 are in fact 0..3 on a second PHY */
lane %= hw->ptp.ports_per_phy;
*addr = eth56g_phy_res[res_type].base_addr +
lane * eth56g_phy_res[res_type].step + offset;
return 0;
}
/** * ice_write_port_eth56g - Write a PHY port register * @hw: pointer to the HW struct * @offset: PHY register offset * @port: Port number * @val: Value to write * @res_type: resource type (register/memory) * * Return: * * %0 - success * * %EINVAL - invalid port number or resource type * * %other - failed to write to PHY
*/ staticint ice_write_port_eth56g(struct ice_hw *hw, u8 port, u32 offset,
u32 val, enum eth56g_res_type res_type)
{
u32 addr; int err;
/** * ice_write_ptp_reg_eth56g - Write a PHY port register * @hw: pointer to the HW struct * @port: Port number to be written * @offset: Offset from PHY port register base * @val: Value to write * * Return: * * %0 - success * * %EINVAL - invalid port number or resource type * * %other - failed to write to PHY
*/ staticint ice_write_ptp_reg_eth56g(struct ice_hw *hw, u8 port, u16 offset,
u32 val)
{ return ice_write_port_eth56g(hw, port, offset, val, ETH56G_PHY_REG_PTP);
}
/** * ice_write_mac_reg_eth56g - Write a MAC PHY port register * parameter * @hw: pointer to the HW struct * @port: Port number to be written * @offset: Offset from PHY port register base * @val: Value to write * * Return: * * %0 - success * * %EINVAL - invalid port number or resource type * * %other - failed to write to PHY
*/ staticint ice_write_mac_reg_eth56g(struct ice_hw *hw, u8 port, u32 offset,
u32 val)
{ return ice_write_port_eth56g(hw, port, offset, val, ETH56G_PHY_REG_MAC);
}
/** * ice_write_xpcs_reg_eth56g - Write a PHY port register * @hw: pointer to the HW struct * @port: Port number to be written * @offset: Offset from PHY port register base * @val: Value to write * * Return: * * %0 - success * * %EINVAL - invalid port number or resource type * * %other - failed to write to PHY
*/ staticint ice_write_xpcs_reg_eth56g(struct ice_hw *hw, u8 port, u32 offset,
u32 val)
{ return ice_write_port_eth56g(hw, port, offset, val,
ETH56G_PHY_REG_XPCS);
}
/** * ice_read_ptp_reg_eth56g - Read a PHY port register * @hw: pointer to the HW struct * @port: Port number to be read * @offset: Offset from PHY port register base * @val: Pointer to the value to read (out param) * * Return: * * %0 - success * * %EINVAL - invalid port number or resource type * * %other - failed to read from PHY
*/ staticint ice_read_ptp_reg_eth56g(struct ice_hw *hw, u8 port, u16 offset,
u32 *val)
{ return ice_read_port_eth56g(hw, port, offset, val, ETH56G_PHY_REG_PTP);
}
/** * ice_read_mac_reg_eth56g - Read a PHY port register * @hw: pointer to the HW struct * @port: Port number to be read * @offset: Offset from PHY port register base * @val: Pointer to the value to read (out param) * * Return: * * %0 - success * * %EINVAL - invalid port number or resource type * * %other - failed to read from PHY
*/ staticint ice_read_mac_reg_eth56g(struct ice_hw *hw, u8 port, u16 offset,
u32 *val)
{ return ice_read_port_eth56g(hw, port, offset, val, ETH56G_PHY_REG_MAC);
}
/** * ice_read_gpcs_reg_eth56g - Read a PHY port register * @hw: pointer to the HW struct * @port: Port number to be read * @offset: Offset from PHY port register base * @val: Pointer to the value to read (out param) * * Return: * * %0 - success * * %EINVAL - invalid port number or resource type * * %other - failed to read from PHY
*/ staticint ice_read_gpcs_reg_eth56g(struct ice_hw *hw, u8 port, u16 offset,
u32 *val)
{ return ice_read_port_eth56g(hw, port, offset, val, ETH56G_PHY_REG_GPCS);
}
/** * ice_read_port_mem_eth56g - Read a PHY port memory location * @hw: pointer to the HW struct * @port: Port number to be read * @offset: Offset from PHY port register base * @val: Pointer to the value to read (out param) * * Return: * * %0 - success * * %EINVAL - invalid port number or resource type * * %other - failed to read from PHY
*/ staticint ice_read_port_mem_eth56g(struct ice_hw *hw, u8 port, u16 offset,
u32 *val)
{ return ice_read_port_eth56g(hw, port, offset, val, ETH56G_PHY_MEM_PTP);
}
/** * ice_write_port_mem_eth56g - Write a PHY port memory location * @hw: pointer to the HW struct * @port: Port number to be read * @offset: Offset from PHY port register base * @val: Pointer to the value to read (out param) * * Return: * * %0 - success * * %EINVAL - invalid port number or resource type * * %other - failed to write to PHY
*/ staticint ice_write_port_mem_eth56g(struct ice_hw *hw, u8 port, u16 offset,
u32 val)
{ return ice_write_port_eth56g(hw, port, offset, val, ETH56G_PHY_MEM_PTP);
}
/** * ice_write_quad_ptp_reg_eth56g - Write a PHY quad register * @hw: pointer to the HW struct * @offset: PHY register offset * @port: Port number * @val: Value to write * * Return: * * %0 - success * * %EIO - invalid port number or resource type * * %other - failed to write to PHY
*/ staticint ice_write_quad_ptp_reg_eth56g(struct ice_hw *hw, u8 port,
u32 offset, u32 val)
{
u32 addr;
/** * ice_is_64b_phy_reg_eth56g - Check if this is a 64bit PHY register * @low_addr: the low address to check * @high_addr: on return, contains the high address of the 64bit register * * Write the appropriate high register offset to use. * * Return: true if the provided low address is one of the known 64bit PHY values * represented as two 32bit registers, false otherwise.
*/ staticbool ice_is_64b_phy_reg_eth56g(u16 low_addr, u16 *high_addr)
{ switch (low_addr) { case PHY_REG_TX_TIMER_INC_PRE_L:
*high_addr = PHY_REG_TX_TIMER_INC_PRE_U; returntrue; case PHY_REG_RX_TIMER_INC_PRE_L:
*high_addr = PHY_REG_RX_TIMER_INC_PRE_U; returntrue; case PHY_REG_TX_CAPTURE_L:
*high_addr = PHY_REG_TX_CAPTURE_U; returntrue; case PHY_REG_RX_CAPTURE_L:
*high_addr = PHY_REG_RX_CAPTURE_U; returntrue; case PHY_REG_TOTAL_TX_OFFSET_L:
*high_addr = PHY_REG_TOTAL_TX_OFFSET_U; returntrue; case PHY_REG_TOTAL_RX_OFFSET_L:
*high_addr = PHY_REG_TOTAL_RX_OFFSET_U; returntrue; case PHY_REG_TX_MEMORY_STATUS_L:
*high_addr = PHY_REG_TX_MEMORY_STATUS_U; returntrue; default: returnfalse;
}
}
/** * ice_is_40b_phy_reg_eth56g - Check if this is a 40bit PHY register * @low_addr: the low address to check * @high_addr: on return, contains the high address of the 40bit value * * Write the appropriate high register offset to use. * * Return: true if the provided low address is one of the known 40bit PHY * values split into two registers with the lower 8 bits in the low register and * the upper 32 bits in the high register, false otherwise.
*/ staticbool ice_is_40b_phy_reg_eth56g(u16 low_addr, u16 *high_addr)
{ switch (low_addr) { case PHY_REG_TIMETUS_L:
*high_addr = PHY_REG_TIMETUS_U; returntrue; case PHY_PCS_REF_TUS_L:
*high_addr = PHY_PCS_REF_TUS_U; returntrue; case PHY_PCS_REF_INC_L:
*high_addr = PHY_PCS_REF_INC_U; returntrue; default: returnfalse;
}
}
/** * ice_read_64b_phy_reg_eth56g - Read a 64bit value from PHY registers * @hw: pointer to the HW struct * @port: PHY port to read from * @low_addr: offset of the lower register to read from * @val: on return, the contents of the 64bit value from the PHY registers * @res_type: resource type * * Check if the caller has specified a known 40 bit register offset and read * the two registers associated with a 40bit value and return it in the val * pointer. * * Return: * * %0 - success * * %EINVAL - not a 64 bit register * * %other - failed to read from PHY
*/ staticint ice_read_64b_phy_reg_eth56g(struct ice_hw *hw, u8 port, u16 low_addr,
u64 *val, enum eth56g_res_type res_type)
{
u16 high_addr;
u32 lo, hi; int err;
if (!ice_is_64b_phy_reg_eth56g(low_addr, &high_addr)) return -EINVAL;
err = ice_read_port_eth56g(hw, port, low_addr, &lo, res_type); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read from low register %#08x\n, err %d",
low_addr, err); return err;
}
err = ice_read_port_eth56g(hw, port, high_addr, &hi, res_type); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read from high register %#08x\n, err %d",
high_addr, err); return err;
}
*val = ((u64)hi << 32) | lo;
return 0;
}
/** * ice_read_64b_ptp_reg_eth56g - Read a 64bit value from PHY registers * @hw: pointer to the HW struct * @port: PHY port to read from * @low_addr: offset of the lower register to read from * @val: on return, the contents of the 64bit value from the PHY registers * * Check if the caller has specified a known 40 bit register offset and read * the two registers associated with a 40bit value and return it in the val * pointer. * * Return: * * %0 - success * * %EINVAL - not a 64 bit register * * %other - failed to read from PHY
*/ staticint ice_read_64b_ptp_reg_eth56g(struct ice_hw *hw, u8 port, u16 low_addr,
u64 *val)
{ return ice_read_64b_phy_reg_eth56g(hw, port, low_addr, val,
ETH56G_PHY_REG_PTP);
}
/** * ice_write_40b_phy_reg_eth56g - Write a 40b value to the PHY * @hw: pointer to the HW struct * @port: port to write to * @low_addr: offset of the low register * @val: 40b value to write * @res_type: resource type * * Check if the caller has specified a known 40 bit register offset and write * provided 40b value to the two associated registers by splitting it up into * two chunks, the lower 8 bits and the upper 32 bits. * * Return: * * %0 - success * * %EINVAL - not a 40 bit register * * %other - failed to write to PHY
*/ staticint ice_write_40b_phy_reg_eth56g(struct ice_hw *hw, u8 port,
u16 low_addr, u64 val, enum eth56g_res_type res_type)
{
u16 high_addr;
u32 lo, hi; int err;
if (!ice_is_40b_phy_reg_eth56g(low_addr, &high_addr)) return -EINVAL;
lo = FIELD_GET(P_REG_40B_LOW_M, val);
hi = (u32)(val >> P_REG_40B_HIGH_S);
err = ice_write_port_eth56g(hw, port, low_addr, lo, res_type); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write to low register 0x%08x\n, err %d",
low_addr, err); return err;
}
err = ice_write_port_eth56g(hw, port, high_addr, hi, res_type); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write to high register 0x%08x\n, err %d",
high_addr, err); return err;
}
return 0;
}
/** * ice_write_40b_ptp_reg_eth56g - Write a 40b value to the PHY * @hw: pointer to the HW struct * @port: port to write to * @low_addr: offset of the low register * @val: 40b value to write * * Check if the caller has specified a known 40 bit register offset and write * provided 40b value to the two associated registers by splitting it up into * two chunks, the lower 8 bits and the upper 32 bits. * * Return: * * %0 - success * * %EINVAL - not a 40 bit register * * %other - failed to write to PHY
*/ staticint ice_write_40b_ptp_reg_eth56g(struct ice_hw *hw, u8 port,
u16 low_addr, u64 val)
{ return ice_write_40b_phy_reg_eth56g(hw, port, low_addr, val,
ETH56G_PHY_REG_PTP);
}
/** * ice_write_64b_phy_reg_eth56g - Write a 64bit value to PHY registers * @hw: pointer to the HW struct * @port: PHY port to read from * @low_addr: offset of the lower register to read from * @val: the contents of the 64bit value to write to PHY * @res_type: resource type * * Check if the caller has specified a known 64 bit register offset and write * the 64bit value to the two associated 32bit PHY registers. * * Return: * * %0 - success * * %EINVAL - not a 64 bit register * * %other - failed to write to PHY
*/ staticint ice_write_64b_phy_reg_eth56g(struct ice_hw *hw, u8 port,
u16 low_addr, u64 val, enum eth56g_res_type res_type)
{
u16 high_addr;
u32 lo, hi; int err;
if (!ice_is_64b_phy_reg_eth56g(low_addr, &high_addr)) return -EINVAL;
lo = lower_32_bits(val);
hi = upper_32_bits(val);
err = ice_write_port_eth56g(hw, port, low_addr, lo, res_type); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write to low register 0x%08x\n, err %d",
low_addr, err); return err;
}
err = ice_write_port_eth56g(hw, port, high_addr, hi, res_type); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write to high register 0x%08x\n, err %d",
high_addr, err); return err;
}
return 0;
}
/** * ice_write_64b_ptp_reg_eth56g - Write a 64bit value to PHY registers * @hw: pointer to the HW struct * @port: PHY port to read from * @low_addr: offset of the lower register to read from * @val: the contents of the 64bit value to write to PHY * * Check if the caller has specified a known 64 bit register offset and write * the 64bit value to the two associated 32bit PHY registers. * * Return: * * %0 - success * * %EINVAL - not a 64 bit register * * %other - failed to write to PHY
*/ staticint ice_write_64b_ptp_reg_eth56g(struct ice_hw *hw, u8 port,
u16 low_addr, u64 val)
{ return ice_write_64b_phy_reg_eth56g(hw, port, low_addr, val,
ETH56G_PHY_REG_PTP);
}
/** * ice_read_ptp_tstamp_eth56g - Read a PHY timestamp out of the port memory * @hw: pointer to the HW struct * @port: the port to read from * @idx: the timestamp index to read * @tstamp: on return, the 40bit timestamp value * * Read a 40bit timestamp value out of the two associated entries in the * port memory block of the internal PHYs of the 56G devices. * * Return: * * %0 - success * * %other - failed to read from PHY
*/ staticint ice_read_ptp_tstamp_eth56g(struct ice_hw *hw, u8 port, u8 idx,
u64 *tstamp)
{
u16 lo_addr, hi_addr;
u32 lo, hi; int err;
err = ice_read_port_mem_eth56g(hw, port, hi_addr, &hi); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read high PTP timestamp register, err %d\n",
err); return err;
}
/* For 56G based internal PHYs, the timestamp is reported with the * lower 8 bits in the low register, and the upper 32 bits in the high * register.
*/
*tstamp = FIELD_PREP(PHY_40B_HIGH_M, hi) |
FIELD_PREP(PHY_40B_LOW_M, lo); return 0;
}
/** * ice_clear_ptp_tstamp_eth56g - Clear a timestamp from the quad block * @hw: pointer to the HW struct * @port: the quad to read from * @idx: the timestamp index to reset * * Read and then forcibly clear the timestamp index to ensure the valid bit is * cleared and the timestamp status bit is reset in the PHY port memory of * internal PHYs of the 56G devices. * * To directly clear the contents of the timestamp block entirely, discarding * all timestamp data at once, software should instead use * ice_ptp_reset_ts_memory_quad_eth56g(). * * This function should only be called on an idx whose bit is set according to * ice_get_phy_tx_tstamp_ready(). * * Return: * * %0 - success * * %other - failed to write to PHY
*/ staticint ice_clear_ptp_tstamp_eth56g(struct ice_hw *hw, u8 port, u8 idx)
{
u64 unused_tstamp;
u16 lo_addr; int err;
/* Read the timestamp register to ensure the timestamp status bit is * cleared.
*/
err = ice_read_ptp_tstamp_eth56g(hw, port, idx, &unused_tstamp); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read the PHY timestamp register for port %u, idx %u, err %d\n",
port, idx, err);
}
lo_addr = (u16)PHY_TSTAMP_L(idx);
err = ice_write_port_mem_eth56g(hw, port, lo_addr, 0); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to clear low PTP timestamp register for port %u, idx %u, err %d\n",
port, idx, err); return err;
}
return 0;
}
/** * ice_ptp_reset_ts_memory_eth56g - Clear all timestamps from the port block * @hw: pointer to the HW struct
*/ staticvoid ice_ptp_reset_ts_memory_eth56g(struct ice_hw *hw)
{ unsignedint port;
for (port = 0; port < hw->ptp.num_lports; port++) {
ice_write_ptp_reg_eth56g(hw, port, PHY_REG_TX_MEMORY_STATUS_L,
0);
ice_write_ptp_reg_eth56g(hw, port, PHY_REG_TX_MEMORY_STATUS_U,
0);
}
}
/** * ice_ptp_prep_port_time_eth56g - Prepare one PHY port with initial time * @hw: pointer to the HW struct * @port: port number * @time: time to initialize the PHY port clocks to * * Write a new initial time value into registers of a specific PHY port. * * Return: * * %0 - success * * %other - failed to write to PHY
*/ staticint ice_ptp_prep_port_time_eth56g(struct ice_hw *hw, u8 port,
u64 time)
{ int err;
/* Tx case */
err = ice_write_64b_ptp_reg_eth56g(hw, port, PHY_REG_TX_TIMER_INC_PRE_L,
time); if (err) return err;
/* Rx case */ return ice_write_64b_ptp_reg_eth56g(hw, port,
PHY_REG_RX_TIMER_INC_PRE_L, time);
}
/** * ice_ptp_prep_phy_time_eth56g - Prepare PHY port with initial time * @hw: pointer to the HW struct * @time: Time to initialize the PHY port clocks to * * Program the PHY port registers with a new initial time value. The port * clock will be initialized once the driver issues an ICE_PTP_INIT_TIME sync * command. The time value is the upper 32 bits of the PHY timer, usually in * units of nominal nanoseconds. * * Return: * * %0 - success * * %other - failed to write to PHY
*/ staticint ice_ptp_prep_phy_time_eth56g(struct ice_hw *hw, u32 time)
{
u64 phy_time;
u8 port;
/* The time represents the upper 32 bits of the PHY timer, so we need * to shift to account for this when programming.
*/
phy_time = (u64)time << 32;
for (port = 0; port < hw->ptp.num_lports; port++) { int err;
err = ice_ptp_prep_port_time_eth56g(hw, port, phy_time); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write init time for port %u, err %d\n",
port, err); return err;
}
}
return 0;
}
/** * ice_ptp_prep_port_adj_eth56g - Prepare a single port for time adjust * @hw: pointer to HW struct * @port: Port number to be programmed * @time: time in cycles to adjust the port clocks * * Program the port for an atomic adjustment by writing the Tx and Rx timer * registers. The atomic adjustment won't be completed until the driver issues * an ICE_PTP_ADJ_TIME command. * * Note that time is not in units of nanoseconds. It is in clock time * including the lower sub-nanosecond portion of the port timer. * * Negative adjustments are supported using 2s complement arithmetic. * * Return: * * %0 - success * * %other - failed to write to PHY
*/ staticint ice_ptp_prep_port_adj_eth56g(struct ice_hw *hw, u8 port, s64 time)
{
u32 l_time, u_time; int err;
/* Tx case */
err = ice_write_ptp_reg_eth56g(hw, port, PHY_REG_TX_TIMER_INC_PRE_L,
l_time); if (err) goto exit_err;
err = ice_write_ptp_reg_eth56g(hw, port, PHY_REG_TX_TIMER_INC_PRE_U,
u_time); if (err) goto exit_err;
/* Rx case */
err = ice_write_ptp_reg_eth56g(hw, port, PHY_REG_RX_TIMER_INC_PRE_L,
l_time); if (err) goto exit_err;
err = ice_write_ptp_reg_eth56g(hw, port, PHY_REG_RX_TIMER_INC_PRE_U,
u_time); if (err) goto exit_err;
return 0;
exit_err:
ice_debug(hw, ICE_DBG_PTP, "Failed to write time adjust for port %u, err %d\n",
port, err); return err;
}
/** * ice_ptp_prep_phy_adj_eth56g - Prep PHY ports for a time adjustment * @hw: pointer to HW struct * @adj: adjustment in nanoseconds * * Prepare the PHY ports for an atomic time adjustment by programming the PHY * Tx and Rx port registers. The actual adjustment is completed by issuing an * ICE_PTP_ADJ_TIME or ICE_PTP_ADJ_TIME_AT_TIME sync command. * * Return: * * %0 - success * * %other - failed to write to PHY
*/ staticint ice_ptp_prep_phy_adj_eth56g(struct ice_hw *hw, s32 adj)
{
s64 cycles;
u8 port;
/* The port clock supports adjustment of the sub-nanosecond portion of * the clock (lowest 32 bits). We shift the provided adjustment in * nanoseconds by 32 to calculate the appropriate adjustment to program * into the PHY ports.
*/
cycles = (s64)adj << 32;
for (port = 0; port < hw->ptp.num_lports; port++) { int err;
err = ice_ptp_prep_port_adj_eth56g(hw, port, cycles); if (err) return err;
}
return 0;
}
/** * ice_ptp_prep_phy_incval_eth56g - Prepare PHY ports for time adjustment * @hw: pointer to HW struct * @incval: new increment value to prepare * * Prepare each of the PHY ports for a new increment value by programming the * port's TIMETUS registers. The new increment value will be updated after * issuing an ICE_PTP_INIT_INCVAL command. * * Return: * * %0 - success * * %other - failed to write to PHY
*/ staticint ice_ptp_prep_phy_incval_eth56g(struct ice_hw *hw, u64 incval)
{
u8 port;
for (port = 0; port < hw->ptp.num_lports; port++) { int err;
err = ice_write_40b_ptp_reg_eth56g(hw, port, PHY_REG_TIMETUS_L,
incval); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write incval for port %u, err %d\n",
port, err); return err;
}
}
return 0;
}
/** * ice_ptp_read_port_capture_eth56g - Read a port's local time capture * @hw: pointer to HW struct * @port: Port number to read * @tx_ts: on return, the Tx port time capture * @rx_ts: on return, the Rx port time capture * * Read the port's Tx and Rx local time capture values. * * Return: * * %0 - success * * %other - failed to read from PHY
*/ staticint ice_ptp_read_port_capture_eth56g(struct ice_hw *hw, u8 port,
u64 *tx_ts, u64 *rx_ts)
{ int err;
/* Tx case */
err = ice_read_64b_ptp_reg_eth56g(hw, port, PHY_REG_TX_CAPTURE_L,
tx_ts); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read REG_TX_CAPTURE, err %d\n",
err); return err;
}
/** * ice_ptp_write_port_cmd_eth56g - Prepare a single PHY port for a timer command * @hw: pointer to HW struct * @port: Port to which cmd has to be sent * @cmd: Command to be sent to the port * * Prepare the requested port for an upcoming timer sync command. * * Return: * * %0 - success * * %other - failed to write to PHY
*/ staticint ice_ptp_write_port_cmd_eth56g(struct ice_hw *hw, u8 port, enum ice_ptp_tmr_cmd cmd)
{
u32 val = ice_ptp_tmr_cmd_to_port_reg(hw, cmd); int err;
/* Tx case */
err = ice_write_ptp_reg_eth56g(hw, port, PHY_REG_TX_TMR_CMD, val); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write back TX_TMR_CMD, err %d\n",
err); return err;
}
/* Rx case */
err = ice_write_ptp_reg_eth56g(hw, port, PHY_REG_RX_TMR_CMD, val); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write back RX_TMR_CMD, err %d\n",
err); return err;
}
return 0;
}
/** * ice_phy_get_speed_eth56g - Get link speed based on PHY link type * @li: pointer to link information struct * * Return: simplified ETH56G PHY speed
*/ staticenum ice_eth56g_link_spd
ice_phy_get_speed_eth56g(struct ice_link_status *li)
{
u16 speed = ice_get_link_speed_based_on_phy_type(li->phy_type_low,
li->phy_type_high);
switch (speed) { case ICE_AQ_LINK_SPEED_1000MB: return ICE_ETH56G_LNK_SPD_1G; case ICE_AQ_LINK_SPEED_2500MB: return ICE_ETH56G_LNK_SPD_2_5G; case ICE_AQ_LINK_SPEED_10GB: return ICE_ETH56G_LNK_SPD_10G; case ICE_AQ_LINK_SPEED_25GB: return ICE_ETH56G_LNK_SPD_25G; case ICE_AQ_LINK_SPEED_40GB: return ICE_ETH56G_LNK_SPD_40G; case ICE_AQ_LINK_SPEED_50GB: switch (li->phy_type_low) { case ICE_PHY_TYPE_LOW_50GBASE_SR: case ICE_PHY_TYPE_LOW_50GBASE_FR: case ICE_PHY_TYPE_LOW_50GBASE_LR: case ICE_PHY_TYPE_LOW_50GBASE_KR_PAM4: case ICE_PHY_TYPE_LOW_50G_AUI1_AOC_ACC: case ICE_PHY_TYPE_LOW_50G_AUI1: return ICE_ETH56G_LNK_SPD_50G; default: return ICE_ETH56G_LNK_SPD_50G2;
} case ICE_AQ_LINK_SPEED_100GB: if (li->phy_type_high ||
li->phy_type_low == ICE_PHY_TYPE_LOW_100GBASE_SR2) return ICE_ETH56G_LNK_SPD_100G2; else return ICE_ETH56G_LNK_SPD_100G; default: return ICE_ETH56G_LNK_SPD_1G;
}
}
/** * ice_phy_cfg_parpcs_eth56g - Configure TUs per PAR/PCS clock cycle * @hw: pointer to the HW struct * @port: port to configure * * Configure the number of TUs for the PAR and PCS clocks used as part of the * timestamp calibration process. * * Return: * * %0 - success * * %other - PHY read/write failed
*/ staticint ice_phy_cfg_parpcs_eth56g(struct ice_hw *hw, u8 port)
{
u32 val; int err;
if (enable)
val |= BIT(quad_lane); else
val &= ~BIT(quad_lane);
val &= ~(PHY_PTP_1STEP_T1S_UP64_M | PHY_PTP_1STEP_T1S_DELTA_M);
err = ice_write_quad_ptp_reg_eth56g(hw, port, addr, val); if (err) return err;
addr = PHY_PTP_1STEP_PEER_DELAY(quad_lane);
val = FIELD_PREP(PHY_PTP_1STEP_PD_DELAY_M, peer_delay); if (peer_delay)
val |= PHY_PTP_1STEP_PD_ADD_PD_M;
val |= PHY_PTP_1STEP_PD_DLY_V_M;
err = ice_write_quad_ptp_reg_eth56g(hw, port, addr, val); if (err) return err;
val &= ~PHY_PTP_1STEP_PD_DLY_V_M;
err = ice_write_quad_ptp_reg_eth56g(hw, port, addr, val); if (err) return err;
val &= ~(PHY_MAC_XIF_1STEP_ENA_M | PHY_MAC_XIF_TS_BIN_MODE_M |
PHY_MAC_XIF_TS_SFD_ENA_M | PHY_MAC_XIF_GMII_TS_SEL_M);
switch (ice_phy_get_speed_eth56g(&hw->port_info->phy.link_info)) { case ICE_ETH56G_LNK_SPD_1G: case ICE_ETH56G_LNK_SPD_2_5G:
val |= PHY_MAC_XIF_GMII_TS_SEL_M; break; default: break;
}
val |= FIELD_PREP(PHY_MAC_XIF_1STEP_ENA_M, enable) |
FIELD_PREP(PHY_MAC_XIF_TS_BIN_MODE_M, enable) |
FIELD_PREP(PHY_MAC_XIF_TS_SFD_ENA_M, sfd_ena);
/** * mul_u32_u32_fx_q9 - Multiply two u32 fixed point Q9 values * @a: multiplier value * @b: multiplicand value * * Return: result of multiplication
*/ static u32 mul_u32_u32_fx_q9(u32 a, u32 b)
{ return (u32)(((u64)a * b) >> ICE_ETH56G_MAC_CFG_FRAC_W);
}
/** * add_u32_u32_fx - Add two u32 fixed point values and discard overflow * @a: first value * @b: second value * * Return: result of addition
*/ static u32 add_u32_u32_fx(u32 a, u32 b)
{ return lower_32_bits(((u64)a + b));
}
/** * ice_ptp_calc_bitslip_eth56g - Calculate bitslip value * @hw: pointer to the HW struct * @port: port to configure * @bs: bitslip multiplier * @fc: FC-FEC enabled * @rs: RS-FEC enabled * @spd: link speed * * Return: calculated bitslip value
*/ static u32 ice_ptp_calc_bitslip_eth56g(struct ice_hw *hw, u8 port, u32 bs, bool fc, bool rs, enum ice_eth56g_link_spd spd)
{
u32 bitslip; int err;
if (!bs || rs) return 0;
if (spd == ICE_ETH56G_LNK_SPD_1G || spd == ICE_ETH56G_LNK_SPD_2_5G) {
err = ice_read_gpcs_reg_eth56g(hw, port, PHY_GPCS_BITSLIP,
&bitslip);
} else {
u8 quad_lane = port % ICE_PORTS_PER_QUAD;
u32 addr;
if (rs && spd == ICE_ETH56G_LNK_SPD_50G2)
ds = 0x633; /* 3.1 */ elseif (rs && spd == ICE_ETH56G_LNK_SPD_100G)
ds = 0x31b; /* 1.552 */
deskew_i = FIELD_PREP(ICE_ETH56G_MAC_CFG_RX_OFFSET_INT, deskew_i); /* Shift 3 fractional bits to the end of the integer part */
deskew_f <<= ICE_ETH56G_MAC_CFG_FRAC_W - PHY_REG_DESKEW_0_RLEVEL_FRAC_W; return mul_u32_u32_fx_q9(deskew_i | deskew_f, ds);
}
/** * ice_phy_set_offsets_eth56g - Set Tx/Rx offset values * @hw: pointer to the HW struct * @port: port to configure * @spd: link speed * @cfg: structure to store output values * @fc: FC-FEC enabled * @rs: RS-FEC enabled * * Return: * * %0 - success * * %other - failed to write to PHY
*/ staticint ice_phy_set_offsets_eth56g(struct ice_hw *hw, u8 port, enum ice_eth56g_link_spd spd, conststruct ice_eth56g_mac_reg_cfg *cfg, bool fc, bool rs)
{
u32 rx_offset, tx_offset, bs_ds; bool onestep, sfd;
/** * ice_phy_cfg_intr_eth56g - Configure TX timestamp interrupt * @hw: pointer to the HW struct * @port: the timestamp port * @ena: enable or disable interrupt * @threshold: interrupt threshold * * Configure TX timestamp interrupt for the specified port * * Return: * * %0 - success * * %other - PHY read/write failed
*/ int ice_phy_cfg_intr_eth56g(struct ice_hw *hw, u8 port, bool ena, u8 threshold)
{ int err;
u32 val;
err = ice_read_ptp_reg_eth56g(hw, port, PHY_REG_TS_INT_CONFIG, &val); if (err) return err;
if (ena) {
val |= PHY_TS_INT_CONFIG_ENA_M;
val &= ~PHY_TS_INT_CONFIG_THRESHOLD_M;
val |= FIELD_PREP(PHY_TS_INT_CONFIG_THRESHOLD_M, threshold);
} else {
val &= ~PHY_TS_INT_CONFIG_ENA_M;
}
/** * ice_read_phy_and_phc_time_eth56g - Simultaneously capture PHC and PHY time * @hw: pointer to the HW struct * @port: the PHY port to read * @phy_time: on return, the 64bit PHY timer value * @phc_time: on return, the lower 64bits of PHC time * * Issue a ICE_PTP_READ_TIME timer command to simultaneously capture the PHY * and PHC timer values. * * Return: * * %0 - success * * %other - PHY read/write failed
*/ staticint ice_read_phy_and_phc_time_eth56g(struct ice_hw *hw, u8 port,
u64 *phy_time, u64 *phc_time)
{ struct ice_pf *pf = container_of(hw, struct ice_pf, hw);
u64 tx_time, rx_time;
u32 zo, lo;
u8 tmr_idx; int err;
tmr_idx = ice_get_ptp_src_clock_index(hw);
/* Prepare the PHC timer for a ICE_PTP_READ_TIME capture command */
ice_ptp_src_cmd(hw, ICE_PTP_READ_TIME);
/* Prepare the PHY timer for a ICE_PTP_READ_TIME capture command */
err = ice_ptp_one_port_cmd(hw, port, ICE_PTP_READ_TIME); if (err) return err;
/* Issue the sync to start the ICE_PTP_READ_TIME capture */
ice_ptp_exec_tmr_cmd(hw);
/* Read the captured PHC time from the shadow time registers */ if (ice_is_primary(hw)) {
zo = rd32(hw, GLTSYN_SHTIME_0(tmr_idx));
lo = rd32(hw, GLTSYN_SHTIME_L(tmr_idx));
} else {
zo = rd32(ice_get_primary_hw(pf), GLTSYN_SHTIME_0(tmr_idx));
lo = rd32(ice_get_primary_hw(pf), GLTSYN_SHTIME_L(tmr_idx));
}
*phc_time = (u64)lo << 32 | zo;
/* Read the captured PHY time from the PHY shadow registers */
err = ice_ptp_read_port_capture_eth56g(hw, port, &tx_time, &rx_time); if (err) return err;
/* If the PHY Tx and Rx timers don't match, log a warning message. * Note that this should not happen in normal circumstances since the * driver always programs them together.
*/ if (tx_time != rx_time)
dev_warn(ice_hw_to_dev(hw), "PHY port %u Tx and Rx timers do not match, tx_time 0x%016llX, rx_time 0x%016llX\n",
port, tx_time, rx_time);
*phy_time = tx_time;
return 0;
}
/** * ice_sync_phy_timer_eth56g - Synchronize the PHY timer with PHC timer * @hw: pointer to the HW struct * @port: the PHY port to synchronize * * Perform an adjustment to ensure that the PHY and PHC timers are in sync. * This is done by issuing a ICE_PTP_READ_TIME command which triggers a * simultaneous read of the PHY timer and PHC timer. Then we use the * difference to calculate an appropriate 2s complement addition to add * to the PHY timer in order to ensure it reads the same value as the * primary PHC timer. * * Return: * * %0 - success * * %-EBUSY- failed to acquire PTP semaphore * * %other - PHY read/write failed
*/ staticint ice_sync_phy_timer_eth56g(struct ice_hw *hw, u8 port)
{
u64 phc_time, phy_time, difference; int err;
if (!ice_ptp_lock(hw)) {
ice_debug(hw, ICE_DBG_PTP, "Failed to acquire PTP semaphore\n"); return -EBUSY;
}
err = ice_read_phy_and_phc_time_eth56g(hw, port, &phy_time, &phc_time); if (err) goto err_unlock;
/* Calculate the amount required to add to the port time in order for * it to match the PHC time. * * Note that the port adjustment is done using 2s complement * arithmetic. This is convenient since it means that we can simply * calculate the difference between the PHC time and the port time, * and it will be interpreted correctly.
*/
err = ice_ptp_prep_port_adj_eth56g(hw, port, (s64)difference); if (err) goto err_unlock;
err = ice_ptp_one_port_cmd(hw, port, ICE_PTP_ADJ_TIME); if (err) goto err_unlock;
/* Issue the sync to activate the time adjustment */
ice_ptp_exec_tmr_cmd(hw);
/* Re-capture the timer values to flush the command registers and * verify that the time was properly adjusted.
*/
err = ice_read_phy_and_phc_time_eth56g(hw, port, &phy_time, &phc_time); if (err) goto err_unlock;
dev_info(ice_hw_to_dev(hw), "Port %u PHY time synced to PHC: 0x%016llX, 0x%016llX\n",
port, phy_time, phc_time);
err_unlock:
ice_ptp_unlock(hw); return err;
}
/** * ice_stop_phy_timer_eth56g - Stop the PHY clock timer * @hw: pointer to the HW struct * @port: the PHY port to stop * @soft_reset: if true, hold the SOFT_RESET bit of PHY_REG_PS * * Stop the clock of a PHY port. This must be done as part of the flow to * re-calibrate Tx and Rx timestamping offsets whenever the clock time is * initialized or when link speed changes. * * Return: * * %0 - success * * %other - failed to write to PHY
*/ int ice_stop_phy_timer_eth56g(struct ice_hw *hw, u8 port, bool soft_reset)
{ int err;
err = ice_write_ptp_reg_eth56g(hw, port, PHY_REG_TX_OFFSET_READY, 0); if (err) return err;
err = ice_write_ptp_reg_eth56g(hw, port, PHY_REG_RX_OFFSET_READY, 0); if (err) return err;
ice_debug(hw, ICE_DBG_PTP, "Disabled clock on PHY port %u\n", port);
return 0;
}
/** * ice_start_phy_timer_eth56g - Start the PHY clock timer * @hw: pointer to the HW struct * @port: the PHY port to start * * Start the clock of a PHY port. This must be done as part of the flow to * re-calibrate Tx and Rx timestamping offsets whenever the clock time is * initialized or when link speed changes. * * Return: * * %0 - success * * %other - PHY read/write failed
*/ int ice_start_phy_timer_eth56g(struct ice_hw *hw, u8 port)
{ struct ice_pf *pf = container_of(hw, struct ice_pf, hw);
u32 lo, hi;
u64 incval;
u8 tmr_idx; int err;
tmr_idx = ice_get_ptp_src_clock_index(hw);
err = ice_stop_phy_timer_eth56g(hw, port, false); if (err) return err;
ice_ptp_src_cmd(hw, ICE_PTP_NOP);
err = ice_phy_cfg_parpcs_eth56g(hw, port); if (err) return err;
err = ice_phy_cfg_ptp_1step_eth56g(hw, port); if (err) return err;
err = ice_phy_cfg_mac_eth56g(hw, port); if (err) return err;
if (ice_is_primary(hw)) {
lo = rd32(hw, GLTSYN_INCVAL_L(tmr_idx));
hi = rd32(hw, GLTSYN_INCVAL_H(tmr_idx));
} else {
lo = rd32(ice_get_primary_hw(pf), GLTSYN_INCVAL_L(tmr_idx));
hi = rd32(ice_get_primary_hw(pf), GLTSYN_INCVAL_H(tmr_idx));
}
incval = (u64)hi << 32 | lo;
err = ice_write_40b_ptp_reg_eth56g(hw, port, PHY_REG_TIMETUS_L, incval); if (err) return err;
err = ice_ptp_one_port_cmd(hw, port, ICE_PTP_INIT_INCVAL); if (err) return err;
ice_ptp_exec_tmr_cmd(hw);
err = ice_sync_phy_timer_eth56g(hw, port); if (err) return err;
err = ice_write_ptp_reg_eth56g(hw, port, PHY_REG_TX_OFFSET_READY, 1); if (err) return err;
err = ice_write_ptp_reg_eth56g(hw, port, PHY_REG_RX_OFFSET_READY, 1); if (err) return err;
ice_debug(hw, ICE_DBG_PTP, "Enabled clock on PHY port %u\n", port);
return 0;
}
/** * ice_ptp_read_tx_hwtstamp_status_eth56g - Get TX timestamp status * @hw: pointer to the HW struct * @ts_status: the timestamp mask pointer * * Read the PHY Tx timestamp status mask indicating which ports have Tx * timestamps available. * * Return: * * %0 - success * * %other - failed to read from PHY
*/ int ice_ptp_read_tx_hwtstamp_status_eth56g(struct ice_hw *hw, u32 *ts_status)
{ conststruct ice_eth56g_params *params = &hw->ptp.phy.eth56g;
u8 phy, mask;
u32 status;
/** * ice_get_phy_tx_tstamp_ready_eth56g - Read the Tx memory status register * @hw: pointer to the HW struct * @port: the PHY port to read from * @tstamp_ready: contents of the Tx memory status register * * Read the PHY_REG_TX_MEMORY_STATUS register indicating which timestamps in * the PHY are ready. A set bit means the corresponding timestamp is valid and * ready to be captured from the PHY timestamp block. * * Return: * * %0 - success * * %other - failed to read from PHY
*/ staticint ice_get_phy_tx_tstamp_ready_eth56g(struct ice_hw *hw, u8 port,
u64 *tstamp_ready)
{ int err;
err = ice_read_64b_ptp_reg_eth56g(hw, port, PHY_REG_TX_MEMORY_STATUS_L,
tstamp_ready); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read TX_MEMORY_STATUS for port %u, err %d\n",
port, err); return err;
}
/* E822 family functions * * The following functions operate on the E822 family of devices.
*/
/** * ice_fill_phy_msg_e82x - Fill message data for a PHY register access * @hw: pointer to the HW struct * @msg: the PHY message buffer to fill in * @port: the port to access * @offset: the register offset
*/ staticvoid ice_fill_phy_msg_e82x(struct ice_hw *hw, struct ice_sbq_msg_input *msg, u8 port,
u16 offset)
{ int phy_port, quadtype;
phy_port = port % hw->ptp.ports_per_phy;
quadtype = ICE_GET_QUAD_NUM(port) %
ICE_GET_QUAD_NUM(hw->ptp.ports_per_phy);
/** * ice_is_64b_phy_reg_e82x - Check if this is a 64bit PHY register * @low_addr: the low address to check * @high_addr: on return, contains the high address of the 64bit register * * Checks if the provided low address is one of the known 64bit PHY values * represented as two 32bit registers. If it is, return the appropriate high * register offset to use.
*/ staticbool ice_is_64b_phy_reg_e82x(u16 low_addr, u16 *high_addr)
{ switch (low_addr) { case P_REG_PAR_PCS_TX_OFFSET_L:
*high_addr = P_REG_PAR_PCS_TX_OFFSET_U; returntrue; case P_REG_PAR_PCS_RX_OFFSET_L:
*high_addr = P_REG_PAR_PCS_RX_OFFSET_U; returntrue; case P_REG_PAR_TX_TIME_L:
*high_addr = P_REG_PAR_TX_TIME_U; returntrue; case P_REG_PAR_RX_TIME_L:
*high_addr = P_REG_PAR_RX_TIME_U; returntrue; case P_REG_TOTAL_TX_OFFSET_L:
*high_addr = P_REG_TOTAL_TX_OFFSET_U; returntrue; case P_REG_TOTAL_RX_OFFSET_L:
*high_addr = P_REG_TOTAL_RX_OFFSET_U; returntrue; case P_REG_UIX66_10G_40G_L:
*high_addr = P_REG_UIX66_10G_40G_U; returntrue; case P_REG_UIX66_25G_100G_L:
*high_addr = P_REG_UIX66_25G_100G_U; returntrue; case P_REG_TX_CAPTURE_L:
*high_addr = P_REG_TX_CAPTURE_U; returntrue; case P_REG_RX_CAPTURE_L:
*high_addr = P_REG_RX_CAPTURE_U; returntrue; case P_REG_TX_TIMER_INC_PRE_L:
*high_addr = P_REG_TX_TIMER_INC_PRE_U; returntrue; case P_REG_RX_TIMER_INC_PRE_L:
*high_addr = P_REG_RX_TIMER_INC_PRE_U; returntrue; default: returnfalse;
}
}
/** * ice_is_40b_phy_reg_e82x - Check if this is a 40bit PHY register * @low_addr: the low address to check * @high_addr: on return, contains the high address of the 40bit value * * Checks if the provided low address is one of the known 40bit PHY values * split into two registers with the lower 8 bits in the low register and the * upper 32 bits in the high register. If it is, return the appropriate high * register offset to use.
*/ staticbool ice_is_40b_phy_reg_e82x(u16 low_addr, u16 *high_addr)
{ switch (low_addr) { case P_REG_TIMETUS_L:
*high_addr = P_REG_TIMETUS_U; returntrue; case P_REG_PAR_RX_TUS_L:
*high_addr = P_REG_PAR_RX_TUS_U; returntrue; case P_REG_PAR_TX_TUS_L:
*high_addr = P_REG_PAR_TX_TUS_U; returntrue; case P_REG_PCS_RX_TUS_L:
*high_addr = P_REG_PCS_RX_TUS_U; returntrue; case P_REG_PCS_TX_TUS_L:
*high_addr = P_REG_PCS_TX_TUS_U; returntrue; case P_REG_DESK_PAR_RX_TUS_L:
*high_addr = P_REG_DESK_PAR_RX_TUS_U; returntrue; case P_REG_DESK_PAR_TX_TUS_L:
*high_addr = P_REG_DESK_PAR_TX_TUS_U; returntrue; case P_REG_DESK_PCS_RX_TUS_L:
*high_addr = P_REG_DESK_PCS_RX_TUS_U; returntrue; case P_REG_DESK_PCS_TX_TUS_L:
*high_addr = P_REG_DESK_PCS_TX_TUS_U; returntrue; default: returnfalse;
}
}
/** * ice_read_phy_reg_e82x - Read a PHY register * @hw: pointer to the HW struct * @port: PHY port to read from * @offset: PHY register offset to read * @val: on return, the contents read from the PHY * * Read a PHY register for the given port over the device sideband queue.
*/ staticint
ice_read_phy_reg_e82x(struct ice_hw *hw, u8 port, u16 offset, u32 *val)
{ struct ice_sbq_msg_input msg = {0}; int err;
err = ice_sbq_rw_reg(hw, &msg, LIBIE_AQ_FLAG_RD); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to send message to PHY, err %d\n",
err); return err;
}
*val = msg.data;
return 0;
}
/** * ice_read_64b_phy_reg_e82x - Read a 64bit value from PHY registers * @hw: pointer to the HW struct * @port: PHY port to read from * @low_addr: offset of the lower register to read from * @val: on return, the contents of the 64bit value from the PHY registers * * Reads the two registers associated with a 64bit value and returns it in the * val pointer. The offset always specifies the lower register offset to use. * The high offset is looked up. This function only operates on registers * known to be two parts of a 64bit value.
*/ staticint
ice_read_64b_phy_reg_e82x(struct ice_hw *hw, u8 port, u16 low_addr, u64 *val)
{
u32 low, high;
u16 high_addr; int err;
/* Only operate on registers known to be split into two 32bit * registers.
*/ if (!ice_is_64b_phy_reg_e82x(low_addr, &high_addr)) {
ice_debug(hw, ICE_DBG_PTP, "Invalid 64b register addr 0x%08x\n",
low_addr); return -EINVAL;
}
err = ice_read_phy_reg_e82x(hw, port, low_addr, &low); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read from low register 0x%08x\n, err %d",
low_addr, err); return err;
}
err = ice_read_phy_reg_e82x(hw, port, high_addr, &high); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read from high register 0x%08x\n, err %d",
high_addr, err); return err;
}
*val = (u64)high << 32 | low;
return 0;
}
/** * ice_write_phy_reg_e82x - Write a PHY register * @hw: pointer to the HW struct * @port: PHY port to write to * @offset: PHY register offset to write * @val: The value to write to the register * * Write a PHY register for the given port over the device sideband queue.
*/ staticint
ice_write_phy_reg_e82x(struct ice_hw *hw, u8 port, u16 offset, u32 val)
{ struct ice_sbq_msg_input msg = {0}; int err;
err = ice_sbq_rw_reg(hw, &msg, LIBIE_AQ_FLAG_RD); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to send message to PHY, err %d\n",
err); return err;
}
return 0;
}
/** * ice_write_40b_phy_reg_e82x - Write a 40b value to the PHY * @hw: pointer to the HW struct * @port: port to write to * @low_addr: offset of the low register * @val: 40b value to write * * Write the provided 40b value to the two associated registers by splitting * it up into two chunks, the lower 8 bits and the upper 32 bits.
*/ staticint
ice_write_40b_phy_reg_e82x(struct ice_hw *hw, u8 port, u16 low_addr, u64 val)
{
u32 low, high;
u16 high_addr; int err;
/* Only operate on registers known to be split into a lower 8 bit * register and an upper 32 bit register.
*/ if (!ice_is_40b_phy_reg_e82x(low_addr, &high_addr)) {
ice_debug(hw, ICE_DBG_PTP, "Invalid 40b register addr 0x%08x\n",
low_addr); return -EINVAL;
}
low = FIELD_GET(P_REG_40B_LOW_M, val);
high = (u32)(val >> P_REG_40B_HIGH_S);
err = ice_write_phy_reg_e82x(hw, port, low_addr, low); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write to low register 0x%08x\n, err %d",
low_addr, err); return err;
}
err = ice_write_phy_reg_e82x(hw, port, high_addr, high); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write to high register 0x%08x\n, err %d",
high_addr, err); return err;
}
return 0;
}
/** * ice_write_64b_phy_reg_e82x - Write a 64bit value to PHY registers * @hw: pointer to the HW struct * @port: PHY port to read from * @low_addr: offset of the lower register to read from * @val: the contents of the 64bit value to write to PHY * * Write the 64bit value to the two associated 32bit PHY registers. The offset * is always specified as the lower register, and the high address is looked * up. This function only operates on registers known to be two parts of * a 64bit value.
*/ staticint
ice_write_64b_phy_reg_e82x(struct ice_hw *hw, u8 port, u16 low_addr, u64 val)
{
u32 low, high;
u16 high_addr; int err;
/* Only operate on registers known to be split into two 32bit * registers.
*/ if (!ice_is_64b_phy_reg_e82x(low_addr, &high_addr)) {
ice_debug(hw, ICE_DBG_PTP, "Invalid 64b register addr 0x%08x\n",
low_addr); return -EINVAL;
}
low = lower_32_bits(val);
high = upper_32_bits(val);
err = ice_write_phy_reg_e82x(hw, port, low_addr, low); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write to low register 0x%08x\n, err %d",
low_addr, err); return err;
}
err = ice_write_phy_reg_e82x(hw, port, high_addr, high); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write to high register 0x%08x\n, err %d",
high_addr, err); return err;
}
return 0;
}
/** * ice_fill_quad_msg_e82x - Fill message data for quad register access * @hw: pointer to the HW struct * @msg: the PHY message buffer to fill in * @quad: the quad to access * @offset: the register offset * * Fill a message buffer for accessing a register in a quad shared between * multiple PHYs. * * Return: * * %0 - OK * * %-EINVAL - invalid quad number
*/ staticint ice_fill_quad_msg_e82x(struct ice_hw *hw, struct ice_sbq_msg_input *msg, u8 quad,
u16 offset)
{
u32 addr;
if (quad >= ICE_GET_QUAD_NUM(hw->ptp.num_lports)) return -EINVAL;
/** * ice_read_quad_reg_e82x - Read a PHY quad register * @hw: pointer to the HW struct * @quad: quad to read from * @offset: quad register offset to read * @val: on return, the contents read from the quad * * Read a quad register over the device sideband queue. Quad registers are * shared between multiple PHYs.
*/ int
ice_read_quad_reg_e82x(struct ice_hw *hw, u8 quad, u16 offset, u32 *val)
{ struct ice_sbq_msg_input msg = {0}; int err;
err = ice_fill_quad_msg_e82x(hw, &msg, quad, offset); if (err) return err;
msg.opcode = ice_sbq_msg_rd;
err = ice_sbq_rw_reg(hw, &msg, LIBIE_AQ_FLAG_RD); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to send message to PHY, err %d\n",
err); return err;
}
*val = msg.data;
return 0;
}
/** * ice_write_quad_reg_e82x - Write a PHY quad register * @hw: pointer to the HW struct * @quad: quad to write to * @offset: quad register offset to write * @val: The value to write to the register * * Write a quad register over the device sideband queue. Quad registers are * shared between multiple PHYs.
*/ int
ice_write_quad_reg_e82x(struct ice_hw *hw, u8 quad, u16 offset, u32 val)
{ struct ice_sbq_msg_input msg = {0}; int err;
err = ice_fill_quad_msg_e82x(hw, &msg, quad, offset); if (err) return err;
msg.opcode = ice_sbq_msg_wr;
msg.data = val;
err = ice_sbq_rw_reg(hw, &msg, LIBIE_AQ_FLAG_RD); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to send message to PHY, err %d\n",
err); return err;
}
return 0;
}
/** * ice_read_phy_tstamp_e82x - Read a PHY timestamp out of the quad block * @hw: pointer to the HW struct * @quad: the quad to read from * @idx: the timestamp index to read * @tstamp: on return, the 40bit timestamp value * * Read a 40bit timestamp value out of the two associated registers in the * quad memory block that is shared between the internal PHYs of the E822 * family of devices.
*/ staticint
ice_read_phy_tstamp_e82x(struct ice_hw *hw, u8 quad, u8 idx, u64 *tstamp)
{
u16 lo_addr, hi_addr;
u32 lo, hi; int err;
err = ice_read_quad_reg_e82x(hw, quad, hi_addr, &hi); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read high PTP timestamp register, err %d\n",
err); return err;
}
/* For E822 based internal PHYs, the timestamp is reported with the * lower 8 bits in the low register, and the upper 32 bits in the high * register.
*/
*tstamp = FIELD_PREP(PHY_40B_HIGH_M, hi) |
FIELD_PREP(PHY_40B_LOW_M, lo);
return 0;
}
/** * ice_clear_phy_tstamp_e82x - Clear a timestamp from the quad block * @hw: pointer to the HW struct * @quad: the quad to read from * @idx: the timestamp index to reset * * Read the timestamp out of the quad to clear its timestamp status bit from * the PHY quad block that is shared between the internal PHYs of the E822 * devices. * * Note that unlike E810, software cannot directly write to the quad memory * bank registers. E822 relies on the ice_get_phy_tx_tstamp_ready() function * to determine which timestamps are valid. Reading a timestamp auto-clears * the valid bit. * * To directly clear the contents of the timestamp block entirely, discarding * all timestamp data at once, software should instead use * ice_ptp_reset_ts_memory_quad_e82x(). * * This function should only be called on an idx whose bit is set according to * ice_get_phy_tx_tstamp_ready().
*/ staticint
ice_clear_phy_tstamp_e82x(struct ice_hw *hw, u8 quad, u8 idx)
{
u64 unused_tstamp; int err;
err = ice_read_phy_tstamp_e82x(hw, quad, idx, &unused_tstamp); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read the timestamp register for quad %u, idx %u, err %d\n",
quad, idx, err); return err;
}
return 0;
}
/** * ice_ptp_reset_ts_memory_quad_e82x - Clear all timestamps from the quad block * @hw: pointer to the HW struct * @quad: the quad to read from * * Clear all timestamps from the PHY quad block that is shared between the * internal PHYs on the E822 devices.
*/ void ice_ptp_reset_ts_memory_quad_e82x(struct ice_hw *hw, u8 quad)
{
ice_write_quad_reg_e82x(hw, quad, Q_REG_TS_CTRL, Q_REG_TS_CTRL_M);
ice_write_quad_reg_e82x(hw, quad, Q_REG_TS_CTRL, ~(u32)Q_REG_TS_CTRL_M);
}
/** * ice_ptp_reset_ts_memory_e82x - Clear all timestamps from all quad blocks * @hw: pointer to the HW struct
*/ staticvoid ice_ptp_reset_ts_memory_e82x(struct ice_hw *hw)
{ unsignedint quad;
/** * ice_ptp_set_vernier_wl - Set the window length for vernier calibration * @hw: pointer to the HW struct * * Set the window length used for the vernier port calibration process.
*/ staticint ice_ptp_set_vernier_wl(struct ice_hw *hw)
{
u8 port;
for (port = 0; port < hw->ptp.num_lports; port++) { int err;
err = ice_write_phy_reg_e82x(hw, port, P_REG_WL,
PTP_VERNIER_WL); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to set vernier window length for port %u, err %d\n",
port, err); return err;
}
}
return 0;
}
/** * ice_ptp_init_phc_e82x - Perform E822 specific PHC initialization * @hw: pointer to HW struct * * Perform PHC initialization steps specific to E822 devices.
*/ staticint ice_ptp_init_phc_e82x(struct ice_hw *hw)
{
u32 val;
/* Enable reading switch and PHY registers over the sideband queue */ #define PF_SB_REM_DEV_CTL_SWITCH_READ BIT(1) #define PF_SB_REM_DEV_CTL_PHY0 BIT(2)
val = rd32(hw, PF_SB_REM_DEV_CTL);
val |= (PF_SB_REM_DEV_CTL_SWITCH_READ | PF_SB_REM_DEV_CTL_PHY0);
wr32(hw, PF_SB_REM_DEV_CTL, val);
/* Set window length for all the ports */ return ice_ptp_set_vernier_wl(hw);
}
/** * ice_ptp_prep_phy_time_e82x - Prepare PHY port with initial time * @hw: pointer to the HW struct * @time: Time to initialize the PHY port clocks to * * Program the PHY port registers with a new initial time value. The port * clock will be initialized once the driver issues an ICE_PTP_INIT_TIME sync * command. The time value is the upper 32 bits of the PHY timer, usually in * units of nominal nanoseconds.
*/ staticint
ice_ptp_prep_phy_time_e82x(struct ice_hw *hw, u32 time)
{
u64 phy_time;
u8 port; int err;
/* The time represents the upper 32 bits of the PHY timer, so we need * to shift to account for this when programming.
*/
phy_time = (u64)time << 32;
for (port = 0; port < hw->ptp.num_lports; port++) { /* Tx case */
err = ice_write_64b_phy_reg_e82x(hw, port,
P_REG_TX_TIMER_INC_PRE_L,
phy_time); if (err) goto exit_err;
/* Rx case */
err = ice_write_64b_phy_reg_e82x(hw, port,
P_REG_RX_TIMER_INC_PRE_L,
phy_time); if (err) goto exit_err;
}
return 0;
exit_err:
ice_debug(hw, ICE_DBG_PTP, "Failed to write init time for port %u, err %d\n",
port, err);
return err;
}
/** * ice_ptp_prep_port_adj_e82x - Prepare a single port for time adjust * @hw: pointer to HW struct * @port: Port number to be programmed * @time: time in cycles to adjust the port Tx and Rx clocks * * Program the port for an atomic adjustment by writing the Tx and Rx timer * registers. The atomic adjustment won't be completed until the driver issues * an ICE_PTP_ADJ_TIME command. * * Note that time is not in units of nanoseconds. It is in clock time * including the lower sub-nanosecond portion of the port timer. * * Negative adjustments are supported using 2s complement arithmetic.
*/ staticint
ice_ptp_prep_port_adj_e82x(struct ice_hw *hw, u8 port, s64 time)
{
u32 l_time, u_time; int err;
/* Tx case */
err = ice_write_phy_reg_e82x(hw, port, P_REG_TX_TIMER_INC_PRE_L,
l_time); if (err) goto exit_err;
err = ice_write_phy_reg_e82x(hw, port, P_REG_TX_TIMER_INC_PRE_U,
u_time); if (err) goto exit_err;
/* Rx case */
err = ice_write_phy_reg_e82x(hw, port, P_REG_RX_TIMER_INC_PRE_L,
l_time); if (err) goto exit_err;
err = ice_write_phy_reg_e82x(hw, port, P_REG_RX_TIMER_INC_PRE_U,
u_time); if (err) goto exit_err;
return 0;
exit_err:
ice_debug(hw, ICE_DBG_PTP, "Failed to write time adjust for port %u, err %d\n",
port, err); return err;
}
/** * ice_ptp_prep_phy_adj_e82x - Prep PHY ports for a time adjustment * @hw: pointer to HW struct * @adj: adjustment in nanoseconds * * Prepare the PHY ports for an atomic time adjustment by programming the PHY * Tx and Rx port registers. The actual adjustment is completed by issuing an * ICE_PTP_ADJ_TIME or ICE_PTP_ADJ_TIME_AT_TIME sync command.
*/ staticint
ice_ptp_prep_phy_adj_e82x(struct ice_hw *hw, s32 adj)
{
s64 cycles;
u8 port;
/* The port clock supports adjustment of the sub-nanosecond portion of * the clock. We shift the provided adjustment in nanoseconds to * calculate the appropriate adjustment to program into the PHY ports.
*/ if (adj > 0)
cycles = (s64)adj << 32; else
cycles = -(((s64)-adj) << 32);
for (port = 0; port < hw->ptp.num_lports; port++) { int err;
err = ice_ptp_prep_port_adj_e82x(hw, port, cycles); if (err) return err;
}
return 0;
}
/** * ice_ptp_prep_phy_incval_e82x - Prepare PHY ports for time adjustment * @hw: pointer to HW struct * @incval: new increment value to prepare * * Prepare each of the PHY ports for a new increment value by programming the * port's TIMETUS registers. The new increment value will be updated after * issuing an ICE_PTP_INIT_INCVAL command.
*/ staticint
ice_ptp_prep_phy_incval_e82x(struct ice_hw *hw, u64 incval)
{ int err;
u8 port;
for (port = 0; port < hw->ptp.num_lports; port++) {
err = ice_write_40b_phy_reg_e82x(hw, port, P_REG_TIMETUS_L,
incval); if (err) goto exit_err;
}
return 0;
exit_err:
ice_debug(hw, ICE_DBG_PTP, "Failed to write incval for port %u, err %d\n",
port, err);
return err;
}
/** * ice_ptp_read_port_capture - Read a port's local time capture * @hw: pointer to HW struct * @port: Port number to read * @tx_ts: on return, the Tx port time capture * @rx_ts: on return, the Rx port time capture * * Read the port's Tx and Rx local time capture values. * * Note this has no equivalent for the E810 devices.
*/ staticint
ice_ptp_read_port_capture(struct ice_hw *hw, u8 port, u64 *tx_ts, u64 *rx_ts)
{ int err;
/* Tx case */
err = ice_read_64b_phy_reg_e82x(hw, port, P_REG_TX_CAPTURE_L, tx_ts); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read REG_TX_CAPTURE, err %d\n",
err); return err;
}
/** * ice_ptp_write_port_cmd_e82x - Prepare a single PHY port for a timer command * @hw: pointer to HW struct * @port: Port to which cmd has to be sent * @cmd: Command to be sent to the port * * Prepare the requested port for an upcoming timer sync command. * * Note there is no equivalent of this operation on E810, as that device * always handles all external PHYs internally. * * Return: * * %0 - success * * %other - failed to write to PHY
*/ staticint ice_ptp_write_port_cmd_e82x(struct ice_hw *hw, u8 port, enum ice_ptp_tmr_cmd cmd)
{
u32 val = ice_ptp_tmr_cmd_to_port_reg(hw, cmd); int err;
/* Tx case */
err = ice_write_phy_reg_e82x(hw, port, P_REG_TX_TMR_CMD, val); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write back TX_TMR_CMD, err %d\n",
err); return err;
}
/* Rx case */
err = ice_write_phy_reg_e82x(hw, port, P_REG_RX_TMR_CMD,
val | TS_CMD_RX_TYPE); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write back RX_TMR_CMD, err %d\n",
err); return err;
}
return 0;
}
/* E822 Vernier calibration functions * * The following functions are used as part of the vernier calibration of * a port. This calibration increases the precision of the timestamps on the * port.
*/
/** * ice_phy_get_speed_and_fec_e82x - Get link speed and FEC based on serdes mode * @hw: pointer to HW struct * @port: the port to read from * @link_out: if non-NULL, holds link speed on success * @fec_out: if non-NULL, holds FEC algorithm on success * * Read the serdes data for the PHY port and extract the link speed and FEC * algorithm.
*/ staticint
ice_phy_get_speed_and_fec_e82x(struct ice_hw *hw, u8 port, enum ice_ptp_link_spd *link_out, enum ice_ptp_fec_mode *fec_out)
{ enum ice_ptp_link_spd link; enum ice_ptp_fec_mode fec;
u32 serdes; int err;
err = ice_read_phy_reg_e82x(hw, port, P_REG_LINK_SPEED, &serdes); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read serdes info\n"); return err;
}
/* Determine the FEC algorithm */
fec = (enum ice_ptp_fec_mode)P_REG_LINK_SPEED_FEC_MODE(serdes);
serdes &= P_REG_LINK_SPEED_SERDES_M;
/* Determine the link speed */ if (fec == ICE_PTP_FEC_MODE_RS_FEC) { switch (serdes) { case ICE_PTP_SERDES_25G:
link = ICE_PTP_LNK_SPD_25G_RS; break; case ICE_PTP_SERDES_50G:
link = ICE_PTP_LNK_SPD_50G_RS; break; case ICE_PTP_SERDES_100G:
link = ICE_PTP_LNK_SPD_100G_RS; break; default: return -EIO;
}
} else { switch (serdes) { case ICE_PTP_SERDES_1G:
link = ICE_PTP_LNK_SPD_1G; break; case ICE_PTP_SERDES_10G:
link = ICE_PTP_LNK_SPD_10G; break; case ICE_PTP_SERDES_25G:
link = ICE_PTP_LNK_SPD_25G; break; case ICE_PTP_SERDES_40G:
link = ICE_PTP_LNK_SPD_40G; break; case ICE_PTP_SERDES_50G:
link = ICE_PTP_LNK_SPD_50G; break; default: return -EIO;
}
}
if (link_out)
*link_out = link; if (fec_out)
*fec_out = fec;
return 0;
}
/** * ice_phy_cfg_lane_e82x - Configure PHY quad for single/multi-lane timestamp * @hw: pointer to HW struct * @port: to configure the quad for
*/ staticvoid ice_phy_cfg_lane_e82x(struct ice_hw *hw, u8 port)
{ enum ice_ptp_link_spd link_spd; int err;
u32 val;
u8 quad;
err = ice_phy_get_speed_and_fec_e82x(hw, port, &link_spd, NULL); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to get PHY link speed, err %d\n",
err); return;
}
quad = ICE_GET_QUAD_NUM(port);
err = ice_read_quad_reg_e82x(hw, quad, Q_REG_TX_MEM_GBL_CFG, &val); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read TX_MEM_GLB_CFG, err %d\n",
err); return;
}
if (link_spd >= ICE_PTP_LNK_SPD_40G)
val &= ~Q_REG_TX_MEM_GBL_CFG_LANE_TYPE_M; else
val |= Q_REG_TX_MEM_GBL_CFG_LANE_TYPE_M;
err = ice_write_quad_reg_e82x(hw, quad, Q_REG_TX_MEM_GBL_CFG, val); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write back TX_MEM_GBL_CFG, err %d\n",
err); return;
}
}
/** * ice_phy_cfg_uix_e82x - Configure Serdes UI to TU conversion for E822 * @hw: pointer to the HW structure * @port: the port to configure * * Program the conversion ration of Serdes clock "unit intervals" (UIs) to PHC * hardware clock time units (TUs). That is, determine the number of TUs per * serdes unit interval, and program the UIX registers with this conversion. * * This conversion is used as part of the calibration process when determining * the additional error of a timestamp vs the real time of transmission or * receipt of the packet. * * Hardware uses the number of TUs per 66 UIs, written to the UIX registers * for the two main serdes clock rates, 10G/40G and 25G/100G serdes clocks. * * To calculate the conversion ratio, we use the following facts: * * a) the clock frequency in Hz (cycles per second) * b) the number of TUs per cycle (the increment value of the clock) * c) 1 second per 1 billion nanoseconds * d) the duration of 66 UIs in nanoseconds * * Given these facts, we can use the following table to work out what ratios * to multiply in order to get the number of TUs per 66 UIs: * * cycles | 1 second | incval (TUs) | nanoseconds * -------+--------------+--------------+------------- * second | 1 billion ns | cycle | 66 UIs * * To perform the multiplication using integers without too much loss of * precision, we can take use the following equation: * * (freq * incval * 6600 LINE_UI ) / ( 100 * 1 billion) * * We scale up to using 6600 UI instead of 66 in order to avoid fractional * nanosecond UIs (66 UI at 10G/40G is 6.4 ns) * * The increment value has a maximum expected range of about 34 bits, while * the frequency value is about 29 bits. Multiplying these values shouldn't * overflow the 64 bits. However, we must then further multiply them again by * the Serdes unit interval duration. To avoid overflow here, we split the * overall divide by 1e11 into a divide by 256 (shift down by 8 bits) and * a divide by 390,625,000. This does lose some precision, but avoids * miscalculation due to arithmetic overflow.
*/ staticint ice_phy_cfg_uix_e82x(struct ice_hw *hw, u8 port)
{
u64 cur_freq, clk_incval, tu_per_sec, uix; int err;
/** * ice_phy_cfg_parpcs_e82x - Configure TUs per PAR/PCS clock cycle * @hw: pointer to the HW struct * @port: port to configure * * Configure the number of TUs for the PAR and PCS clocks used as part of the * timestamp calibration process. This depends on the link speed, as the PHY * uses different markers depending on the speed. * * 1Gb/10Gb/25Gb: * - Tx/Rx PAR/PCS markers * * 25Gb RS: * - Tx/Rx Reed Solomon gearbox PAR/PCS markers * * 40Gb/50Gb: * - Tx/Rx PAR/PCS markers * - Rx Deskew PAR/PCS markers * * 50G RS and 100GB RS: * - Tx/Rx Reed Solomon gearbox PAR/PCS markers * - Rx Deskew PAR/PCS markers * - Tx PAR/PCS markers * * To calculate the conversion, we use the PHC clock frequency (cycles per * second), the increment value (TUs per cycle), and the related PHY clock * frequency to calculate the TUs per unit of the PHY link clock. The * following table shows how the units convert: * * cycles | TUs | second * -------+-------+-------- * second | cycle | cycles * * For each conversion register, look up the appropriate frequency from the * e822 PAR/PCS table and calculate the TUs per unit of that clock. Program * this to the appropriate register, preparing hardware to perform timestamp * calibration to calculate the total Tx or Rx offset to adjust the timestamp * in order to calibrate for the internal PHY delays. * * Note that the increment value ranges up to ~34 bits, and the clock * frequency is ~29 bits, so multiplying them together should fit within the * 64 bit arithmetic.
*/ staticint ice_phy_cfg_parpcs_e82x(struct ice_hw *hw, u8 port)
{
u64 cur_freq, clk_incval, tu_per_sec, phy_tus; enum ice_ptp_link_spd link_spd; enum ice_ptp_fec_mode fec_mode; int err;
err = ice_phy_get_speed_and_fec_e82x(hw, port, &link_spd, &fec_mode); if (err) return err;
/* Calculate TUs per cycle of the PHC clock */
tu_per_sec = cur_freq * clk_incval;
/* For each PHY conversion register, look up the appropriate link * speed frequency and determine the TUs per that clock's cycle time. * Split this into a high and low value and then program the * appropriate register. If that link speed does not use the * associated register, write zeros to clear it instead.
*/
/** * ice_calc_fixed_tx_offset_e82x - Calculated Fixed Tx offset for a port * @hw: pointer to the HW struct * @link_spd: the Link speed to calculate for * * Calculate the fixed offset due to known static latency data.
*/ static u64
ice_calc_fixed_tx_offset_e82x(struct ice_hw *hw, enum ice_ptp_link_spd link_spd)
{
u64 cur_freq, clk_incval, tu_per_sec, fixed_offset;
/* Calculate TUs per second */
tu_per_sec = cur_freq * clk_incval;
/* Calculate number of TUs to add for the fixed Tx latency. Since the * latency measurement is in 1/100th of a nanosecond, we need to * multiply by tu_per_sec and then divide by 1e11. This calculation * overflows 64 bit integer arithmetic, so break it up into two * divisions by 1e4 first then by 1e7.
*/
fixed_offset = div_u64(tu_per_sec, 10000);
fixed_offset *= e822_vernier[link_spd].tx_fixed_delay;
fixed_offset = div_u64(fixed_offset, 10000000);
return fixed_offset;
}
/** * ice_phy_cfg_tx_offset_e82x - Configure total Tx timestamp offset * @hw: pointer to the HW struct * @port: the PHY port to configure * * Program the P_REG_TOTAL_TX_OFFSET register with the total number of TUs to * adjust Tx timestamps by. This is calculated by combining some known static * latency along with the Vernier offset computations done by hardware. * * This function will not return successfully until the Tx offset calculations * have been completed, which requires waiting until at least one packet has * been transmitted by the device. It is safe to call this function * periodically until calibration succeeds, as it will only program the offset * once. * * To avoid overflow, when calculating the offset based on the known static * latency values, we use measurements in 1/100th of a nanosecond, and divide * the TUs per second up front. This avoids overflow while allowing * calculation of the adjustment using integer arithmetic. * * Returns zero on success, -EBUSY if the hardware vernier offset * calibration has not completed, or another error code on failure.
*/ int ice_phy_cfg_tx_offset_e82x(struct ice_hw *hw, u8 port)
{ enum ice_ptp_link_spd link_spd; enum ice_ptp_fec_mode fec_mode;
u64 total_offset, val; int err;
u32 reg;
/* Nothing to do if we've already programmed the offset */
err = ice_read_phy_reg_e82x(hw, port, P_REG_TX_OR, ®); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read TX_OR for port %u, err %d\n",
port, err); return err;
}
if (reg) return 0;
err = ice_read_phy_reg_e82x(hw, port, P_REG_TX_OV_STATUS, ®); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read TX_OV_STATUS for port %u, err %d\n",
port, err); return err;
}
if (!(reg & P_REG_TX_OV_STATUS_OV_M)) return -EBUSY;
err = ice_phy_get_speed_and_fec_e82x(hw, port, &link_spd, &fec_mode); if (err) return err;
/* Read the first Vernier offset from the PHY register and add it to * the total offset.
*/ if (link_spd == ICE_PTP_LNK_SPD_1G ||
link_spd == ICE_PTP_LNK_SPD_10G ||
link_spd == ICE_PTP_LNK_SPD_25G ||
link_spd == ICE_PTP_LNK_SPD_25G_RS ||
link_spd == ICE_PTP_LNK_SPD_40G ||
link_spd == ICE_PTP_LNK_SPD_50G) {
err = ice_read_64b_phy_reg_e82x(hw, port,
P_REG_PAR_PCS_TX_OFFSET_L,
&val); if (err) return err;
total_offset += val;
}
/* For Tx, we only need to use the second Vernier offset for * multi-lane link speeds with RS-FEC. The lanes will always be * aligned.
*/ if (link_spd == ICE_PTP_LNK_SPD_50G_RS ||
link_spd == ICE_PTP_LNK_SPD_100G_RS) {
err = ice_read_64b_phy_reg_e82x(hw, port,
P_REG_PAR_TX_TIME_L,
&val); if (err) return err;
total_offset += val;
}
/* Now that the total offset has been calculated, program it to the * PHY and indicate that the Tx offset is ready. After this, * timestamps will be enabled.
*/
err = ice_write_64b_phy_reg_e82x(hw, port, P_REG_TOTAL_TX_OFFSET_L,
total_offset); if (err) return err;
err = ice_write_phy_reg_e82x(hw, port, P_REG_TX_OR, 1); if (err) return err;
/** * ice_phy_calc_pmd_adj_e82x - Calculate PMD adjustment for Rx * @hw: pointer to the HW struct * @port: the PHY port to adjust for * @link_spd: the current link speed of the PHY * @fec_mode: the current FEC mode of the PHY * @pmd_adj: on return, the amount to adjust the Rx total offset by * * Calculates the adjustment to Rx timestamps due to PMD alignment in the PHY. * This varies by link speed and FEC mode. The value calculated accounts for * various delays caused when receiving a packet.
*/ staticint
ice_phy_calc_pmd_adj_e82x(struct ice_hw *hw, u8 port, enum ice_ptp_link_spd link_spd, enum ice_ptp_fec_mode fec_mode, u64 *pmd_adj)
{
u64 cur_freq, clk_incval, tu_per_sec, mult, adj;
u8 pmd_align;
u32 val; int err;
/* Calculate TUs per second */
tu_per_sec = cur_freq * clk_incval;
/* The PMD alignment adjustment measurement depends on the link speed, * and whether FEC is enabled. For each link speed, the alignment * adjustment is calculated by dividing a value by the length of * a Time Unit in nanoseconds. * * 1G: align == 4 ? 10 * 0.8 : (align + 6 % 10) * 0.8 * 10G: align == 65 ? 0 : (align * 0.1 * 32/33) * 10G w/FEC: align * 0.1 * 32/33 * 25G: align == 65 ? 0 : (align * 0.4 * 32/33) * 25G w/FEC: align * 0.4 * 32/33 * 40G: align == 65 ? 0 : (align * 0.1 * 32/33) * 40G w/FEC: align * 0.1 * 32/33 * 50G: align == 65 ? 0 : (align * 0.4 * 32/33) * 50G w/FEC: align * 0.8 * 32/33 * * For RS-FEC, if align is < 17 then we must also add 1.6 * 32/33. * * To allow for calculating this value using integer arithmetic, we * instead start with the number of TUs per second, (inverse of the * length of a Time Unit in nanoseconds), multiply by a value based * on the PMD alignment register, and then divide by the right value * calculated based on the table above. To avoid integer overflow this * division is broken up into a step of dividing by 125 first.
*/ if (link_spd == ICE_PTP_LNK_SPD_1G) { if (pmd_align == 4)
mult = 10; else
mult = (pmd_align + 6) % 10;
} elseif (link_spd == ICE_PTP_LNK_SPD_10G ||
link_spd == ICE_PTP_LNK_SPD_25G ||
link_spd == ICE_PTP_LNK_SPD_40G ||
link_spd == ICE_PTP_LNK_SPD_50G) { /* If Clause 74 FEC, always calculate PMD adjust */ if (pmd_align != 65 || fec_mode == ICE_PTP_FEC_MODE_CLAUSE74)
mult = pmd_align; else
mult = 0;
} elseif (link_spd == ICE_PTP_LNK_SPD_25G_RS ||
link_spd == ICE_PTP_LNK_SPD_50G_RS ||
link_spd == ICE_PTP_LNK_SPD_100G_RS) { if (pmd_align < 17)
mult = pmd_align + 40; else
mult = pmd_align;
} else {
ice_debug(hw, ICE_DBG_PTP, "Unknown link speed %d, skipping PMD adjustment\n",
link_spd);
mult = 0;
}
/* In some cases, there's no need to adjust for the PMD alignment */ if (!mult) {
*pmd_adj = 0; return 0;
}
/* Calculate the adjustment by multiplying TUs per second by the * appropriate multiplier and divisor. To avoid overflow, we first * divide by 125, and then handle remaining divisor based on the link * speed pmd_adj_divisor value.
*/
adj = div_u64(tu_per_sec, 125);
adj *= mult;
adj = div_u64(adj, e822_vernier[link_spd].pmd_adj_divisor);
/* Finally, for 25G-RS and 50G-RS, a further adjustment for the Rx * cycle count is necessary.
*/ if (link_spd == ICE_PTP_LNK_SPD_25G_RS) {
u64 cycle_adj;
u8 rx_cycle;
/* Return the calculated adjustment */
*pmd_adj = adj;
return 0;
}
/** * ice_calc_fixed_rx_offset_e82x - Calculated the fixed Rx offset for a port * @hw: pointer to HW struct * @link_spd: The Link speed to calculate for * * Determine the fixed Rx latency for a given link speed.
*/ static u64
ice_calc_fixed_rx_offset_e82x(struct ice_hw *hw, enum ice_ptp_link_spd link_spd)
{
u64 cur_freq, clk_incval, tu_per_sec, fixed_offset;
/* Calculate TUs per second */
tu_per_sec = cur_freq * clk_incval;
/* Calculate number of TUs to add for the fixed Rx latency. Since the * latency measurement is in 1/100th of a nanosecond, we need to * multiply by tu_per_sec and then divide by 1e11. This calculation * overflows 64 bit integer arithmetic, so break it up into two * divisions by 1e4 first then by 1e7.
*/
fixed_offset = div_u64(tu_per_sec, 10000);
fixed_offset *= e822_vernier[link_spd].rx_fixed_delay;
fixed_offset = div_u64(fixed_offset, 10000000);
return fixed_offset;
}
/** * ice_phy_cfg_rx_offset_e82x - Configure total Rx timestamp offset * @hw: pointer to the HW struct * @port: the PHY port to configure * * Program the P_REG_TOTAL_RX_OFFSET register with the number of Time Units to * adjust Rx timestamps by. This combines calculations from the Vernier offset * measurements taken in hardware with some data about known fixed delay as * well as adjusting for multi-lane alignment delay. * * This function will not return successfully until the Rx offset calculations * have been completed, which requires waiting until at least one packet has * been received by the device. It is safe to call this function periodically * until calibration succeeds, as it will only program the offset once. * * This function must be called only after the offset registers are valid, * i.e. after the Vernier calibration wait has passed, to ensure that the PHY * has measured the offset. * * To avoid overflow, when calculating the offset based on the known static * latency values, we use measurements in 1/100th of a nanosecond, and divide * the TUs per second up front. This avoids overflow while allowing * calculation of the adjustment using integer arithmetic. * * Returns zero on success, -EBUSY if the hardware vernier offset * calibration has not completed, or another error code on failure.
*/ int ice_phy_cfg_rx_offset_e82x(struct ice_hw *hw, u8 port)
{ enum ice_ptp_link_spd link_spd; enum ice_ptp_fec_mode fec_mode;
u64 total_offset, pmd, val; int err;
u32 reg;
/* Nothing to do if we've already programmed the offset */
err = ice_read_phy_reg_e82x(hw, port, P_REG_RX_OR, ®); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read RX_OR for port %u, err %d\n",
port, err); return err;
}
if (reg) return 0;
err = ice_read_phy_reg_e82x(hw, port, P_REG_RX_OV_STATUS, ®); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read RX_OV_STATUS for port %u, err %d\n",
port, err); return err;
}
if (!(reg & P_REG_RX_OV_STATUS_OV_M)) return -EBUSY;
err = ice_phy_get_speed_and_fec_e82x(hw, port, &link_spd, &fec_mode); if (err) return err;
/* Read the first Vernier offset from the PHY register and add it to * the total offset.
*/
err = ice_read_64b_phy_reg_e82x(hw, port,
P_REG_PAR_PCS_RX_OFFSET_L,
&val); if (err) return err;
total_offset += val;
/* For Rx, all multi-lane link speeds include a second Vernier * calibration, because the lanes might not be aligned.
*/ if (link_spd == ICE_PTP_LNK_SPD_40G ||
link_spd == ICE_PTP_LNK_SPD_50G ||
link_spd == ICE_PTP_LNK_SPD_50G_RS ||
link_spd == ICE_PTP_LNK_SPD_100G_RS) {
err = ice_read_64b_phy_reg_e82x(hw, port,
P_REG_PAR_RX_TIME_L,
&val); if (err) return err;
total_offset += val;
}
/* In addition, Rx must account for the PMD alignment */
err = ice_phy_calc_pmd_adj_e82x(hw, port, link_spd, fec_mode, &pmd); if (err) return err;
/* For RS-FEC, this adjustment adds delay, but for other modes, it * subtracts delay.
*/ if (fec_mode == ICE_PTP_FEC_MODE_RS_FEC)
total_offset += pmd; else
total_offset -= pmd;
/* Now that the total offset has been calculated, program it to the * PHY and indicate that the Rx offset is ready. After this, * timestamps will be enabled.
*/
err = ice_write_64b_phy_reg_e82x(hw, port, P_REG_TOTAL_RX_OFFSET_L,
total_offset); if (err) return err;
err = ice_write_phy_reg_e82x(hw, port, P_REG_RX_OR, 1); if (err) return err;
/** * ice_ptp_clear_phy_offset_ready_e82x - Clear PHY TX_/RX_OFFSET_READY registers * @hw: pointer to the HW struct * * Clear PHY TX_/RX_OFFSET_READY registers, effectively marking all transmitted * and received timestamps as invalid. * * Return: 0 on success, other error codes when failed to write to PHY
*/ int ice_ptp_clear_phy_offset_ready_e82x(struct ice_hw *hw)
{
u8 port;
for (port = 0; port < hw->ptp.num_lports; port++) { int err;
err = ice_write_phy_reg_e82x(hw, port, P_REG_TX_OR, 0); if (err) {
dev_warn(ice_hw_to_dev(hw), "Failed to clear PHY TX_OFFSET_READY register\n"); return err;
}
err = ice_write_phy_reg_e82x(hw, port, P_REG_RX_OR, 0); if (err) {
dev_warn(ice_hw_to_dev(hw), "Failed to clear PHY RX_OFFSET_READY register\n"); return err;
}
}
return 0;
}
/** * ice_read_phy_and_phc_time_e82x - Simultaneously capture PHC and PHY time * @hw: pointer to the HW struct * @port: the PHY port to read * @phy_time: on return, the 64bit PHY timer value * @phc_time: on return, the lower 64bits of PHC time * * Issue a ICE_PTP_READ_TIME timer command to simultaneously capture the PHY * and PHC timer values.
*/ staticint
ice_read_phy_and_phc_time_e82x(struct ice_hw *hw, u8 port, u64 *phy_time,
u64 *phc_time)
{
u64 tx_time, rx_time;
u32 zo, lo;
u8 tmr_idx; int err;
tmr_idx = ice_get_ptp_src_clock_index(hw);
/* Prepare the PHC timer for a ICE_PTP_READ_TIME capture command */
ice_ptp_src_cmd(hw, ICE_PTP_READ_TIME);
/* Prepare the PHY timer for a ICE_PTP_READ_TIME capture command */
err = ice_ptp_one_port_cmd(hw, port, ICE_PTP_READ_TIME); if (err) return err;
/* Issue the sync to start the ICE_PTP_READ_TIME capture */
ice_ptp_exec_tmr_cmd(hw);
/* Read the captured PHC time from the shadow time registers */
zo = rd32(hw, GLTSYN_SHTIME_0(tmr_idx));
lo = rd32(hw, GLTSYN_SHTIME_L(tmr_idx));
*phc_time = (u64)lo << 32 | zo;
/* Read the captured PHY time from the PHY shadow registers */
err = ice_ptp_read_port_capture(hw, port, &tx_time, &rx_time); if (err) return err;
/* If the PHY Tx and Rx timers don't match, log a warning message. * Note that this should not happen in normal circumstances since the * driver always programs them together.
*/ if (tx_time != rx_time)
dev_warn(ice_hw_to_dev(hw), "PHY port %u Tx and Rx timers do not match, tx_time 0x%016llX, rx_time 0x%016llX\n",
port, (unsignedlonglong)tx_time,
(unsignedlonglong)rx_time);
*phy_time = tx_time;
return 0;
}
/** * ice_sync_phy_timer_e82x - Synchronize the PHY timer with PHC timer * @hw: pointer to the HW struct * @port: the PHY port to synchronize * * Perform an adjustment to ensure that the PHY and PHC timers are in sync. * This is done by issuing a ICE_PTP_READ_TIME command which triggers a * simultaneous read of the PHY timer and PHC timer. Then we use the * difference to calculate an appropriate 2s complement addition to add * to the PHY timer in order to ensure it reads the same value as the * primary PHC timer.
*/ staticint ice_sync_phy_timer_e82x(struct ice_hw *hw, u8 port)
{
u64 phc_time, phy_time, difference; int err;
if (!ice_ptp_lock(hw)) {
ice_debug(hw, ICE_DBG_PTP, "Failed to acquire PTP semaphore\n"); return -EBUSY;
}
err = ice_read_phy_and_phc_time_e82x(hw, port, &phy_time, &phc_time); if (err) goto err_unlock;
/* Calculate the amount required to add to the port time in order for * it to match the PHC time. * * Note that the port adjustment is done using 2s complement * arithmetic. This is convenient since it means that we can simply * calculate the difference between the PHC time and the port time, * and it will be interpreted correctly.
*/
difference = phc_time - phy_time;
err = ice_ptp_prep_port_adj_e82x(hw, port, (s64)difference); if (err) goto err_unlock;
err = ice_ptp_one_port_cmd(hw, port, ICE_PTP_ADJ_TIME); if (err) goto err_unlock;
/* Do not perform any action on the main timer */
ice_ptp_src_cmd(hw, ICE_PTP_NOP);
/* Issue the sync to activate the time adjustment */
ice_ptp_exec_tmr_cmd(hw);
/* Re-capture the timer values to flush the command registers and * verify that the time was properly adjusted.
*/
err = ice_read_phy_and_phc_time_e82x(hw, port, &phy_time, &phc_time); if (err) goto err_unlock;
dev_info(ice_hw_to_dev(hw), "Port %u PHY time synced to PHC: 0x%016llX, 0x%016llX\n",
port, (unsignedlonglong)phy_time,
(unsignedlonglong)phc_time);
ice_ptp_unlock(hw);
return 0;
err_unlock:
ice_ptp_unlock(hw); return err;
}
/** * ice_stop_phy_timer_e82x - Stop the PHY clock timer * @hw: pointer to the HW struct * @port: the PHY port to stop * @soft_reset: if true, hold the SOFT_RESET bit of P_REG_PS * * Stop the clock of a PHY port. This must be done as part of the flow to * re-calibrate Tx and Rx timestamping offsets whenever the clock time is * initialized or when link speed changes.
*/ int
ice_stop_phy_timer_e82x(struct ice_hw *hw, u8 port, bool soft_reset)
{ int err;
u32 val;
err = ice_write_phy_reg_e82x(hw, port, P_REG_TX_OR, 0); if (err) return err;
err = ice_write_phy_reg_e82x(hw, port, P_REG_RX_OR, 0); if (err) return err;
err = ice_read_phy_reg_e82x(hw, port, P_REG_PS, &val); if (err) return err;
val &= ~P_REG_PS_START_M;
err = ice_write_phy_reg_e82x(hw, port, P_REG_PS, val); if (err) return err;
val &= ~P_REG_PS_ENA_CLK_M;
err = ice_write_phy_reg_e82x(hw, port, P_REG_PS, val); if (err) return err;
if (soft_reset) {
val |= P_REG_PS_SFT_RESET_M;
err = ice_write_phy_reg_e82x(hw, port, P_REG_PS, val); if (err) return err;
}
ice_debug(hw, ICE_DBG_PTP, "Disabled clock on PHY port %u\n", port);
return 0;
}
/** * ice_start_phy_timer_e82x - Start the PHY clock timer * @hw: pointer to the HW struct * @port: the PHY port to start * * Start the clock of a PHY port. This must be done as part of the flow to * re-calibrate Tx and Rx timestamping offsets whenever the clock time is * initialized or when link speed changes. * * Hardware will take Vernier measurements on Tx or Rx of packets.
*/ int ice_start_phy_timer_e82x(struct ice_hw *hw, u8 port)
{
u32 lo, hi, val;
u64 incval;
u8 tmr_idx; int err;
tmr_idx = ice_get_ptp_src_clock_index(hw);
err = ice_stop_phy_timer_e82x(hw, port, false); if (err) return err;
ice_phy_cfg_lane_e82x(hw, port);
err = ice_phy_cfg_uix_e82x(hw, port); if (err) return err;
err = ice_phy_cfg_parpcs_e82x(hw, port); if (err) return err;
lo = rd32(hw, GLTSYN_INCVAL_L(tmr_idx));
hi = rd32(hw, GLTSYN_INCVAL_H(tmr_idx));
incval = (u64)hi << 32 | lo;
err = ice_write_40b_phy_reg_e82x(hw, port, P_REG_TIMETUS_L, incval); if (err) return err;
err = ice_ptp_one_port_cmd(hw, port, ICE_PTP_INIT_INCVAL); if (err) return err;
/* Do not perform any action on the main timer */
ice_ptp_src_cmd(hw, ICE_PTP_NOP);
ice_ptp_exec_tmr_cmd(hw);
err = ice_read_phy_reg_e82x(hw, port, P_REG_PS, &val); if (err) return err;
val |= P_REG_PS_SFT_RESET_M;
err = ice_write_phy_reg_e82x(hw, port, P_REG_PS, val); if (err) return err;
val |= P_REG_PS_START_M;
err = ice_write_phy_reg_e82x(hw, port, P_REG_PS, val); if (err) return err;
val &= ~P_REG_PS_SFT_RESET_M;
err = ice_write_phy_reg_e82x(hw, port, P_REG_PS, val); if (err) return err;
err = ice_ptp_one_port_cmd(hw, port, ICE_PTP_INIT_INCVAL); if (err) return err;
ice_ptp_exec_tmr_cmd(hw);
val |= P_REG_PS_ENA_CLK_M;
err = ice_write_phy_reg_e82x(hw, port, P_REG_PS, val); if (err) return err;
val |= P_REG_PS_LOAD_OFFSET_M;
err = ice_write_phy_reg_e82x(hw, port, P_REG_PS, val); if (err) return err;
ice_ptp_exec_tmr_cmd(hw);
err = ice_sync_phy_timer_e82x(hw, port); if (err) return err;
ice_debug(hw, ICE_DBG_PTP, "Enabled clock on PHY port %u\n", port);
return 0;
}
/** * ice_get_phy_tx_tstamp_ready_e82x - Read Tx memory status register * @hw: pointer to the HW struct * @quad: the timestamp quad to read from * @tstamp_ready: contents of the Tx memory status register * * Read the Q_REG_TX_MEMORY_STATUS register indicating which timestamps in * the PHY are ready. A set bit means the corresponding timestamp is valid and * ready to be captured from the PHY timestamp block.
*/ staticint
ice_get_phy_tx_tstamp_ready_e82x(struct ice_hw *hw, u8 quad, u64 *tstamp_ready)
{
u32 hi, lo; int err;
err = ice_read_quad_reg_e82x(hw, quad, Q_REG_TX_MEMORY_STATUS_U, &hi); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read TX_MEMORY_STATUS_U for quad %u, err %d\n",
quad, err); return err;
}
err = ice_read_quad_reg_e82x(hw, quad, Q_REG_TX_MEMORY_STATUS_L, &lo); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read TX_MEMORY_STATUS_L for quad %u, err %d\n",
quad, err); return err;
}
*tstamp_ready = (u64)hi << 32 | (u64)lo;
return 0;
}
/** * ice_phy_cfg_intr_e82x - Configure TX timestamp interrupt * @hw: pointer to the HW struct * @quad: the timestamp quad * @ena: enable or disable interrupt * @threshold: interrupt threshold * * Configure TX timestamp interrupt for the specified quad * * Return: 0 on success, other error codes when failed to read/write quad
*/
int ice_phy_cfg_intr_e82x(struct ice_hw *hw, u8 quad, bool ena, u8 threshold)
{ int err;
u32 val;
err = ice_read_quad_reg_e82x(hw, quad, Q_REG_TX_MEM_GBL_CFG, &val); if (err) return err;
val &= ~Q_REG_TX_MEM_GBL_CFG_INTR_ENA_M; if (ena) {
val |= Q_REG_TX_MEM_GBL_CFG_INTR_ENA_M;
val &= ~Q_REG_TX_MEM_GBL_CFG_INTR_THR_M;
val |= FIELD_PREP(Q_REG_TX_MEM_GBL_CFG_INTR_THR_M, threshold);
}
/* E810 functions * * The following functions operate on the E810 series devices which use * a separate external PHY.
*/
/** * ice_read_phy_reg_e810 - Read register from external PHY on E810 * @hw: pointer to the HW struct * @addr: the address to read from * @val: On return, the value read from the PHY * * Read a register from the external PHY on the E810 device.
*/ staticint ice_read_phy_reg_e810(struct ice_hw *hw, u32 addr, u32 *val)
{ struct ice_sbq_msg_input msg = {0}; int err;
err = ice_sbq_rw_reg(hw, &msg, LIBIE_AQ_FLAG_RD); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to send message to PHY, err %d\n",
err); return err;
}
*val = msg.data;
return 0;
}
/** * ice_write_phy_reg_e810 - Write register on external PHY on E810 * @hw: pointer to the HW struct * @addr: the address to writem to * @val: the value to write to the PHY * * Write a value to a register of the external PHY on the E810 device.
*/ staticint ice_write_phy_reg_e810(struct ice_hw *hw, u32 addr, u32 val)
{ struct ice_sbq_msg_input msg = {0}; int err;
err = ice_sbq_rw_reg(hw, &msg, LIBIE_AQ_FLAG_RD); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to send message to PHY, err %d\n",
err); return err;
}
return 0;
}
/** * ice_read_phy_tstamp_ll_e810 - Read a PHY timestamp registers through the FW * @hw: pointer to the HW struct * @idx: the timestamp index to read * @hi: 8 bit timestamp high value * @lo: 32 bit timestamp low value * * Read a 8bit timestamp high value and 32 bit timestamp low value out of the * timestamp block of the external PHY on the E810 device using the low latency * timestamp read.
*/ staticint
ice_read_phy_tstamp_ll_e810(struct ice_hw *hw, u8 idx, u8 *hi, u32 *lo)
{ struct ice_e810_params *params = &hw->ptp.phy.e810; unsignedlong flags;
u32 val; int err;
/* Wait for any pending in-progress low latency interrupt */
err = wait_event_interruptible_locked_irq(params->atqbal_wq,
!(params->atqbal_flags &
ATQBAL_FLAGS_INTR_IN_PROGRESS)); if (err) {
spin_unlock_irqrestore(¶ms->atqbal_wq.lock, flags); return err;
}
/* Write TS index to read to the PF register so the FW can read it */
val = FIELD_PREP(REG_LL_PROXY_H_TS_IDX, idx) | REG_LL_PROXY_H_EXEC;
wr32(hw, REG_LL_PROXY_H, val);
/* Read the register repeatedly until the FW provides us the TS */
err = read_poll_timeout_atomic(rd32, val,
!FIELD_GET(REG_LL_PROXY_H_EXEC, val), 10,
REG_LL_PROXY_H_TIMEOUT_US, false, hw,
REG_LL_PROXY_H); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read PTP timestamp using low latency read\n");
spin_unlock_irqrestore(¶ms->atqbal_wq.lock, flags); return err;
}
/* High 8 bit value of the TS is on the bits 16:23 */
*hi = FIELD_GET(REG_LL_PROXY_H_TS_HIGH, val);
/* Read the low 32 bit value and set the TS valid bit */
*lo = rd32(hw, REG_LL_PROXY_L) | TS_VALID;
/** * ice_read_phy_tstamp_sbq_e810 - Read a PHY timestamp registers through the sbq * @hw: pointer to the HW struct * @lport: the lport to read from * @idx: the timestamp index to read * @hi: 8 bit timestamp high value * @lo: 32 bit timestamp low value * * Read a 8bit timestamp high value and 32 bit timestamp low value out of the * timestamp block of the external PHY on the E810 device using sideband queue.
*/ staticint
ice_read_phy_tstamp_sbq_e810(struct ice_hw *hw, u8 lport, u8 idx, u8 *hi,
u32 *lo)
{
u32 hi_addr = TS_EXT(HIGH_TX_MEMORY_BANK_START, lport, idx);
u32 lo_addr = TS_EXT(LOW_TX_MEMORY_BANK_START, lport, idx);
u32 lo_val, hi_val; int err;
err = ice_read_phy_reg_e810(hw, hi_addr, &hi_val); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read high PTP timestamp register, err %d\n",
err); return err;
}
*lo = lo_val;
*hi = (u8)hi_val;
return 0;
}
/** * ice_read_phy_tstamp_e810 - Read a PHY timestamp out of the external PHY * @hw: pointer to the HW struct * @lport: the lport to read from * @idx: the timestamp index to read * @tstamp: on return, the 40bit timestamp value * * Read a 40bit timestamp value out of the timestamp block of the external PHY * on the E810 device.
*/ staticint
ice_read_phy_tstamp_e810(struct ice_hw *hw, u8 lport, u8 idx, u64 *tstamp)
{
u32 lo = 0;
u8 hi = 0; int err;
/* For E810 devices, the timestamp is reported with the lower 32 bits * in the low register, and the upper 8 bits in the high register.
*/
*tstamp = FIELD_PREP(PHY_EXT_40B_HIGH_M, hi) |
FIELD_PREP(PHY_EXT_40B_LOW_M, lo);
return 0;
}
/** * ice_clear_phy_tstamp_e810 - Clear a timestamp from the external PHY * @hw: pointer to the HW struct * @lport: the lport to read from * @idx: the timestamp index to reset * * Read the timestamp and then forcibly overwrite its value to clear the valid * bit from the timestamp block of the external PHY on the E810 device. * * This function should only be called on an idx whose bit is set according to * ice_get_phy_tx_tstamp_ready().
*/ staticint ice_clear_phy_tstamp_e810(struct ice_hw *hw, u8 lport, u8 idx)
{
u32 lo_addr, hi_addr;
u64 unused_tstamp; int err;
err = ice_read_phy_tstamp_e810(hw, lport, idx, &unused_tstamp); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to read the timestamp register for lport %u, idx %u, err %d\n",
lport, idx, err); return err;
}
tmr_idx = hw->func_caps.ts_func_info.tmr_index_owned;
err = ice_write_phy_reg_e810(hw, ETH_GLTSYN_ENA(tmr_idx),
GLTSYN_ENA_TSYN_ENA_M); if (err)
ice_debug(hw, ICE_DBG_PTP, "PTP failed in ena_phy_time_syn %d\n",
err);
return err;
}
/** * ice_ptp_prep_phy_time_e810 - Prepare PHY port with initial time * @hw: Board private structure * @time: Time to initialize the PHY port clock to * * Program the PHY port ETH_GLTSYN_SHTIME registers in preparation setting the * initial clock time. The time will not actually be programmed until the * driver issues an ICE_PTP_INIT_TIME command. * * The time value is the upper 32 bits of the PHY timer, usually in units of * nominal nanoseconds.
*/ staticint ice_ptp_prep_phy_time_e810(struct ice_hw *hw, u32 time)
{
u8 tmr_idx; int err;
err = ice_write_phy_reg_e810(hw, ETH_GLTSYN_SHTIME_L(tmr_idx), time); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write SHTIME_L, err %d\n",
err); return err;
}
return 0;
}
/** * ice_ptp_prep_phy_adj_ll_e810 - Prep PHY ports for a time adjustment * @hw: pointer to HW struct * @adj: adjustment value to program * * Use the low latency firmware interface to program PHY time adjustment to * all PHY ports. * * Return: 0 on success, -EBUSY on timeout
*/ staticint ice_ptp_prep_phy_adj_ll_e810(struct ice_hw *hw, s32 adj)
{ const u8 tmr_idx = hw->func_caps.ts_func_info.tmr_index_owned; struct ice_e810_params *params = &hw->ptp.phy.e810;
u32 val; int err;
spin_lock_irq(¶ms->atqbal_wq.lock);
/* Wait for any pending in-progress low latency interrupt */
err = wait_event_interruptible_locked_irq(params->atqbal_wq,
!(params->atqbal_flags &
ATQBAL_FLAGS_INTR_IN_PROGRESS)); if (err) {
spin_unlock_irq(¶ms->atqbal_wq.lock); return err;
}
/* Read the register repeatedly until the FW indicates completion */
err = read_poll_timeout_atomic(rd32, val,
!FIELD_GET(REG_LL_PROXY_H_EXEC, val),
10, REG_LL_PROXY_H_TIMEOUT_US, false, hw,
REG_LL_PROXY_H); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to prepare PHY timer adjustment using low latency interface\n");
spin_unlock_irq(¶ms->atqbal_wq.lock); return err;
}
spin_unlock_irq(¶ms->atqbal_wq.lock);
return 0;
}
/** * ice_ptp_prep_phy_adj_e810 - Prep PHY port for a time adjustment * @hw: pointer to HW struct * @adj: adjustment value to program * * Prepare the PHY port for an atomic adjustment by programming the PHY * ETH_GLTSYN_SHADJ_L and ETH_GLTSYN_SHADJ_H registers. The actual adjustment * is completed by issuing an ICE_PTP_ADJ_TIME sync command. * * The adjustment value only contains the portion used for the upper 32bits of * the PHY timer, usually in units of nominal nanoseconds. Negative * adjustments are supported using 2s complement arithmetic.
*/ staticint ice_ptp_prep_phy_adj_e810(struct ice_hw *hw, s32 adj)
{
u8 tmr_idx; int err;
if (hw->dev_caps.ts_dev_info.ll_phy_tmr_update) return ice_ptp_prep_phy_adj_ll_e810(hw, adj);
/* Adjustments are represented as signed 2's complement values in * nanoseconds. Sub-nanosecond adjustment is not supported.
*/
err = ice_write_phy_reg_e810(hw, ETH_GLTSYN_SHADJ_L(tmr_idx), 0); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write adj to PHY SHADJ_L, err %d\n",
err); return err;
}
err = ice_write_phy_reg_e810(hw, ETH_GLTSYN_SHADJ_H(tmr_idx), adj); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write adj to PHY SHADJ_H, err %d\n",
err); return err;
}
return 0;
}
/** * ice_ptp_prep_phy_incval_ll_e810 - Prep PHY ports increment value change * @hw: pointer to HW struct * @incval: The new 40bit increment value to prepare * * Use the low latency firmware interface to program PHY time increment value * for all PHY ports. * * Return: 0 on success, -EBUSY on timeout
*/ staticint ice_ptp_prep_phy_incval_ll_e810(struct ice_hw *hw, u64 incval)
{ const u8 tmr_idx = hw->func_caps.ts_func_info.tmr_index_owned; struct ice_e810_params *params = &hw->ptp.phy.e810;
u32 val; int err;
spin_lock_irq(¶ms->atqbal_wq.lock);
/* Wait for any pending in-progress low latency interrupt */
err = wait_event_interruptible_locked_irq(params->atqbal_wq,
!(params->atqbal_flags &
ATQBAL_FLAGS_INTR_IN_PROGRESS)); if (err) {
spin_unlock_irq(¶ms->atqbal_wq.lock); return err;
}
/* Read the register repeatedly until the FW indicates completion */
err = read_poll_timeout_atomic(rd32, val,
!FIELD_GET(REG_LL_PROXY_H_EXEC, val),
10, REG_LL_PROXY_H_TIMEOUT_US, false, hw,
REG_LL_PROXY_H); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to prepare PHY timer increment using low latency interface\n");
spin_unlock_irq(¶ms->atqbal_wq.lock); return err;
}
spin_unlock_irq(¶ms->atqbal_wq.lock);
return 0;
}
/** * ice_ptp_prep_phy_incval_e810 - Prep PHY port increment value change * @hw: pointer to HW struct * @incval: The new 40bit increment value to prepare * * Prepare the PHY port for a new increment value by programming the PHY * ETH_GLTSYN_SHADJ_L and ETH_GLTSYN_SHADJ_H registers. The actual change is * completed by issuing an ICE_PTP_INIT_INCVAL command.
*/ staticint ice_ptp_prep_phy_incval_e810(struct ice_hw *hw, u64 incval)
{
u32 high, low;
u8 tmr_idx; int err;
if (hw->dev_caps.ts_dev_info.ll_phy_tmr_update) return ice_ptp_prep_phy_incval_ll_e810(hw, incval);
tmr_idx = hw->func_caps.ts_func_info.tmr_index_owned;
low = lower_32_bits(incval);
high = upper_32_bits(incval);
err = ice_write_phy_reg_e810(hw, ETH_GLTSYN_SHADJ_L(tmr_idx), low); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to write incval to PHY SHADJ_L, err %d\n",
err); return err;
}
/** * ice_ptp_port_cmd_e810 - Prepare all external PHYs for a timer command * @hw: pointer to HW struct * @cmd: Command to be sent to the port * * Prepare the external PHYs connected to this device for a timer sync * command.
*/ staticint ice_ptp_port_cmd_e810(struct ice_hw *hw, enum ice_ptp_tmr_cmd cmd)
{
u32 val = ice_ptp_tmr_cmd_to_port_reg(hw, cmd);
/** * ice_get_phy_tx_tstamp_ready_e810 - Read Tx memory status register * @hw: pointer to the HW struct * @port: the PHY port to read * @tstamp_ready: contents of the Tx memory status register * * E810 devices do not use a Tx memory status register. Instead simply * indicate that all timestamps are currently ready.
*/ staticint
ice_get_phy_tx_tstamp_ready_e810(struct ice_hw *hw, u8 port, u64 *tstamp_ready)
{
*tstamp_ready = 0xFFFFFFFFFFFFFFFF; return 0;
}
/* E810 SMA functions * * The following functions operate specifically on E810 hardware and are used * to access the extended GPIOs available.
*/
/** * ice_read_sma_ctrl * @hw: pointer to the hw struct * @data: pointer to data to be read from the GPIO controller * * Read the SMA controller state. It is connected to pins 3-7 of Port 1 of the * PCA9575 expander, so only bits 3-7 in data are valid.
*/ int ice_read_sma_ctrl(struct ice_hw *hw, u8 *data)
{ int status;
u16 handle;
u8 i;
status = ice_get_pca9575_handle(hw, &handle); if (status) return status;
*data = 0;
for (i = ICE_SMA_MIN_BIT; i <= ICE_SMA_MAX_BIT; i++) { bool pin;
status = ice_aq_get_gpio(hw, handle, i + ICE_PCA9575_P1_OFFSET,
&pin, NULL); if (status) break;
*data |= (u8)(!pin) << i;
}
return status;
}
/** * ice_write_sma_ctrl * @hw: pointer to the hw struct * @data: data to be written to the GPIO controller * * Write the data to the SMA controller. It is connected to pins 3-7 of Port 1 * of the PCA9575 expander, so only bits 3-7 in data are valid.
*/ int ice_write_sma_ctrl(struct ice_hw *hw, u8 data)
{ int status;
u16 handle;
u8 i;
status = ice_get_pca9575_handle(hw, &handle); if (status) return status;
for (i = ICE_SMA_MIN_BIT; i <= ICE_SMA_MAX_BIT; i++) { bool pin;
pin = !(data & (1 << i));
status = ice_aq_set_gpio(hw, handle, i + ICE_PCA9575_P1_OFFSET,
pin, NULL); if (status) break;
}
return status;
}
/** * ice_ptp_read_sdp_ac - read SDP available connections section from NVM * @hw: pointer to the HW struct * @entries: returns the SDP available connections section from NVM * @num_entries: returns the number of valid entries * * Return: 0 on success, negative error code if NVM read failed or section does * not exist or is corrupted
*/ int ice_ptp_read_sdp_ac(struct ice_hw *hw, __le16 *entries, uint *num_entries)
{
__le16 data;
u32 offset; int err;
err = ice_acquire_nvm(hw, ICE_RES_READ); if (err) gotoexit;
/* Read the offset of SDP_AC */
offset = ICE_AQC_NVM_SDP_AC_PTR_OFFSET;
err = ice_aq_read_nvm(hw, 0, offset, sizeof(data), &data, false, true,
NULL); if (err) gotoexit;
/* Check if section exist */
offset = FIELD_GET(ICE_AQC_NVM_SDP_AC_PTR_M, le16_to_cpu(data)); if (offset == ICE_AQC_NVM_SDP_AC_PTR_INVAL) {
err = -EINVAL; gotoexit;
}
/** * ice_ptp_write_direct_incval_e830 - Prep PHY port increment value change * @hw: pointer to HW struct * @incval: The new 40bit increment value to prepare * * Prepare the PHY port for a new increment value by programming the PHC * GLTSYN_INCVAL_L and GLTSYN_INCVAL_H registers. The actual change is * completed by FW automatically.
*/ staticvoid ice_ptp_write_direct_incval_e830(conststruct ice_hw *hw,
u64 incval)
{
u8 tmr_idx = hw->func_caps.ts_func_info.tmr_index_owned;
/** * ice_ptp_write_direct_phc_time_e830 - Prepare PHY port with initial time * @hw: Board private structure * @time: Time to initialize the PHY port clock to * * Program the PHY port ETH_GLTSYN_SHTIME registers in preparation setting the * initial clock time. The time will not actually be programmed until the * driver issues an ICE_PTP_INIT_TIME command. * * The time value is the upper 32 bits of the PHY timer, usually in units of * nominal nanoseconds.
*/ staticvoid ice_ptp_write_direct_phc_time_e830(conststruct ice_hw *hw,
u64 time)
{
u8 tmr_idx = hw->func_caps.ts_func_info.tmr_index_owned;
/** * ice_ptp_port_cmd_e830 - Prepare all external PHYs for a timer command * @hw: pointer to HW struct * @cmd: Command to be sent to the port * * Prepare the external PHYs connected to this device for a timer sync * command. * * Return: 0 on success, negative error code when PHY write failed
*/ staticint ice_ptp_port_cmd_e830(struct ice_hw *hw, enum ice_ptp_tmr_cmd cmd)
{
u32 val = ice_ptp_tmr_cmd_to_port_reg(hw, cmd);
/** * ice_read_phy_tstamp_e830 - Read a PHY timestamp out of the external PHY * @hw: pointer to the HW struct * @idx: the timestamp index to read * @tstamp: on return, the 40bit timestamp value * * Read a 40bit timestamp value out of the timestamp block of the external PHY * on the E830 device.
*/ staticvoid ice_read_phy_tstamp_e830(conststruct ice_hw *hw, u8 idx,
u64 *tstamp)
{
u32 hi, lo;
hi = rd32(hw, E830_PRTTSYN_TXTIME_H(idx));
lo = rd32(hw, E830_PRTTSYN_TXTIME_L(idx));
/* For E830 devices, the timestamp is reported with the lower 32 bits * in the low register, and the upper 8 bits in the high register.
*/
*tstamp = FIELD_PREP(PHY_EXT_40B_HIGH_M, hi) |
FIELD_PREP(PHY_EXT_40B_LOW_M, lo);
}
/** * ice_get_phy_tx_tstamp_ready_e830 - Read Tx memory status register * @hw: pointer to the HW struct * @port: the PHY port to read * @tstamp_ready: contents of the Tx memory status register
*/ staticvoid ice_get_phy_tx_tstamp_ready_e830(conststruct ice_hw *hw, u8 port,
u64 *tstamp_ready)
{
*tstamp_ready = rd32(hw, E830_PRTMAC_TS_TX_MEM_VALID_H);
*tstamp_ready <<= 32;
*tstamp_ready |= rd32(hw, E830_PRTMAC_TS_TX_MEM_VALID_L);
}
/* Device agnostic functions * * The following functions implement shared behavior common to all devices, * possibly calling a device specific implementation where necessary.
*/
/** * ice_ptp_lock - Acquire PTP global semaphore register lock * @hw: pointer to the HW struct * * Acquire the global PTP hardware semaphore lock. Returns true if the lock * was acquired, false otherwise. * * The PFTSYN_SEM register sets the busy bit on read, returning the previous * value. If software sees the busy bit cleared, this means that this function * acquired the lock (and the busy bit is now set). If software sees the busy * bit set, it means that another function acquired the lock. * * Software must clear the busy bit with a write to release the lock for other * functions when done.
*/ bool ice_ptp_lock(struct ice_hw *hw)
{
u32 hw_lock; int i;
#define MAX_TRIES 15
for (i = 0; i < MAX_TRIES; i++) {
hw_lock = rd32(hw, PFTSYN_SEM + (PFTSYN_SEM_BYTES * hw->pf_id));
hw_lock = hw_lock & PFTSYN_SEM_BUSY_M; if (hw_lock) { /* Somebody is holding the lock */
usleep_range(5000, 6000); continue;
}
break;
}
return !hw_lock;
}
/** * ice_ptp_unlock - Release PTP global semaphore register lock * @hw: pointer to the HW struct * * Release the global PTP hardware semaphore lock. This is done by writing to * the PFTSYN_SEM register.
*/ void ice_ptp_unlock(struct ice_hw *hw)
{
wr32(hw, PFTSYN_SEM + (PFTSYN_SEM_BYTES * hw->pf_id), 0);
}
/** * ice_ptp_init_hw - Initialize hw based on device type * @hw: pointer to the HW structure * * Determine the PHY model for the device, and initialize hw * for use by other functions.
*/ void ice_ptp_init_hw(struct ice_hw *hw)
{ struct ice_ptp_hw *ptp = &hw->ptp;
switch (hw->mac_type) { case ICE_MAC_E810:
ice_ptp_init_phy_e810(ptp); break; case ICE_MAC_E830:
ice_ptp_init_phy_e830(ptp); break; case ICE_MAC_GENERIC:
ice_ptp_init_phy_e82x(ptp); break; case ICE_MAC_GENERIC_3K_E825:
ice_ptp_init_phy_e825(hw); break; default: return;
}
}
/** * ice_ptp_write_port_cmd - Prepare a single PHY port for a timer command * @hw: pointer to HW struct * @port: Port to which cmd has to be sent * @cmd: Command to be sent to the port * * Prepare one port for the upcoming timer sync command. Do not use this for * programming only a single port, instead use ice_ptp_one_port_cmd() to * ensure non-modified ports get properly initialized to ICE_PTP_NOP. * * Return: * * %0 - success * %-EBUSY - PHY type not supported * * %other - failed to write port command
*/ staticint ice_ptp_write_port_cmd(struct ice_hw *hw, u8 port, enum ice_ptp_tmr_cmd cmd)
{ switch (hw->mac_type) { case ICE_MAC_GENERIC: return ice_ptp_write_port_cmd_e82x(hw, port, cmd); case ICE_MAC_GENERIC_3K_E825: return ice_ptp_write_port_cmd_eth56g(hw, port, cmd); default: return -EOPNOTSUPP;
}
}
/** * ice_ptp_one_port_cmd - Program one PHY port for a timer command * @hw: pointer to HW struct * @configured_port: the port that should execute the command * @configured_cmd: the command to be executed on the configured port * * Prepare one port for executing a timer command, while preparing all other * ports to ICE_PTP_NOP. This allows executing a command on a single port * while ensuring all other ports do not execute stale commands. * * Return: * * %0 - success * * %other - failed to write port command
*/ int ice_ptp_one_port_cmd(struct ice_hw *hw, u8 configured_port, enum ice_ptp_tmr_cmd configured_cmd)
{
u32 port;
for (port = 0; port < hw->ptp.num_lports; port++) { int err;
/* Program the configured port with the configured command, * program all other ports with ICE_PTP_NOP.
*/ if (port == configured_port)
err = ice_ptp_write_port_cmd(hw, port, configured_cmd); else
err = ice_ptp_write_port_cmd(hw, port, ICE_PTP_NOP);
if (err) return err;
}
return 0;
}
/** * ice_ptp_port_cmd - Prepare PHY ports for a timer sync command * @hw: pointer to HW struct * @cmd: the timer command to setup * * Prepare all PHY ports on this device for the requested timer command. For * some families this can be done in one shot, but for other families each * port must be configured individually. * * Return: * * %0 - success * * %other - failed to write port command
*/ staticint ice_ptp_port_cmd(struct ice_hw *hw, enum ice_ptp_tmr_cmd cmd)
{
u32 port;
/* PHY models which can program all ports simultaneously */ switch (hw->mac_type) { case ICE_MAC_E810: return ice_ptp_port_cmd_e810(hw, cmd); case ICE_MAC_E830: return ice_ptp_port_cmd_e830(hw, cmd); default: break;
}
/* PHY models which require programming each port separately */ for (port = 0; port < hw->ptp.num_lports; port++) { int err;
err = ice_ptp_write_port_cmd(hw, port, cmd); if (err) return err;
}
return 0;
}
/** * ice_ptp_tmr_cmd - Prepare and trigger a timer sync command * @hw: pointer to HW struct * @cmd: the command to issue * * Prepare the source timer and PHY timers and then trigger the requested * command. This causes the shadow registers previously written in preparation * for the command to be synchronously applied to both the source and PHY * timers.
*/ staticint ice_ptp_tmr_cmd(struct ice_hw *hw, enum ice_ptp_tmr_cmd cmd)
{ int err;
/* First, prepare the source timer */
ice_ptp_src_cmd(hw, cmd);
/* Next, prepare the ports */
err = ice_ptp_port_cmd(hw, cmd); if (err) {
ice_debug(hw, ICE_DBG_PTP, "Failed to prepare PHY ports for timer command %u, err %d\n",
cmd, err); return err;
}
/* Write the sync command register to drive both source and PHY timer * commands synchronously
*/
ice_ptp_exec_tmr_cmd(hw);
return 0;
}
/** * ice_ptp_init_time - Initialize device time to provided value * @hw: pointer to HW struct * @time: 64bits of time (GLTSYN_TIME_L and GLTSYN_TIME_H) * * Initialize the device to the specified time provided. This requires a three * step process: * * 1) write the new init time to the source timer shadow registers * 2) write the new init time to the PHY timer shadow registers * 3) issue an init_time timer command to synchronously switch both the source * and port timers to the new init time value at the next clock cycle.
*/ int ice_ptp_init_time(struct ice_hw *hw, u64 time)
{
u8 tmr_idx; int err;
/* Source timers */ /* For E830 we don't need to use shadow registers, its automatic */ if (hw->mac_type == ICE_MAC_E830) {
ice_ptp_write_direct_phc_time_e830(hw, time); return 0;
}
/* PHY timers */ /* Fill Rx and Tx ports and send msg to PHY */ switch (hw->mac_type) { case ICE_MAC_E810:
err = ice_ptp_prep_phy_time_e810(hw, time & 0xFFFFFFFF); break; case ICE_MAC_GENERIC:
err = ice_ptp_prep_phy_time_e82x(hw, time & 0xFFFFFFFF); break; case ICE_MAC_GENERIC_3K_E825:
err = ice_ptp_prep_phy_time_eth56g(hw,
(u32)(time & 0xFFFFFFFF)); break; default:
err = -EOPNOTSUPP;
}
if (err) return err;
return ice_ptp_tmr_cmd(hw, ICE_PTP_INIT_TIME);
}
/** * ice_ptp_write_incval - Program PHC with new increment value * @hw: pointer to HW struct * @incval: Source timer increment value per clock cycle * * Program the PHC with a new increment value. This requires a three-step * process: * * 1) Write the increment value to the source timer shadow registers * 2) Write the increment value to the PHY timer shadow registers * 3) Issue an ICE_PTP_INIT_INCVAL timer command to synchronously switch both * the source and port timers to the new increment value at the next clock * cycle.
*/ int ice_ptp_write_incval(struct ice_hw *hw, u64 incval)
{
u8 tmr_idx; int err;
/* For E830 we don't need to use shadow registers, its automatic */ if (hw->mac_type == ICE_MAC_E830) {
ice_ptp_write_direct_incval_e830(hw, incval); return 0;
}
/** * ice_ptp_write_incval_locked - Program new incval while holding semaphore * @hw: pointer to HW struct * @incval: Source timer increment value per clock cycle * * Program a new PHC incval while holding the PTP semaphore.
*/ int ice_ptp_write_incval_locked(struct ice_hw *hw, u64 incval)
{ int err;
if (!ice_ptp_lock(hw)) return -EBUSY;
err = ice_ptp_write_incval(hw, incval);
ice_ptp_unlock(hw);
return err;
}
/** * ice_ptp_adj_clock - Adjust PHC clock time atomically * @hw: pointer to HW struct * @adj: Adjustment in nanoseconds * * Perform an atomic adjustment of the PHC time by the specified number of * nanoseconds. This requires a three-step process: * * 1) Write the adjustment to the source timer shadow registers * 2) Write the adjustment to the PHY timer shadow registers * 3) Issue an ICE_PTP_ADJ_TIME timer command to synchronously apply the * adjustment to both the source and port timers at the next clock cycle.
*/ int ice_ptp_adj_clock(struct ice_hw *hw, s32 adj)
{
u8 tmr_idx; int err;
/* Write the desired clock adjustment into the GLTSYN_SHADJ register. * For an ICE_PTP_ADJ_TIME command, this set of registers represents * the value to add to the clock time. It supports subtraction by * interpreting the value as a 2's complement integer.
*/
wr32(hw, GLTSYN_SHADJ_L(tmr_idx), 0);
wr32(hw, GLTSYN_SHADJ_H(tmr_idx), adj);
switch (hw->mac_type) { case ICE_MAC_E810:
err = ice_ptp_prep_phy_adj_e810(hw, adj); break; case ICE_MAC_E830: /* E830 sync PHYs automatically after setting GLTSYN_SHADJ */ return 0; case ICE_MAC_GENERIC:
err = ice_ptp_prep_phy_adj_e82x(hw, adj); break; case ICE_MAC_GENERIC_3K_E825:
err = ice_ptp_prep_phy_adj_eth56g(hw, adj); break; default:
err = -EOPNOTSUPP;
}
if (err) return err;
return ice_ptp_tmr_cmd(hw, ICE_PTP_ADJ_TIME);
}
/** * ice_read_phy_tstamp - Read a PHY timestamp from the timestamo block * @hw: pointer to the HW struct * @block: the block to read from * @idx: the timestamp index to read * @tstamp: on return, the 40bit timestamp value * * Read a 40bit timestamp value out of the timestamp block. For E822 devices, * the block is the quad to read from. For E810 devices, the block is the * logical port to read from.
*/ int ice_read_phy_tstamp(struct ice_hw *hw, u8 block, u8 idx, u64 *tstamp)
{ switch (hw->mac_type) { case ICE_MAC_E810: return ice_read_phy_tstamp_e810(hw, block, idx, tstamp); case ICE_MAC_E830:
ice_read_phy_tstamp_e830(hw, idx, tstamp); return 0; case ICE_MAC_GENERIC: return ice_read_phy_tstamp_e82x(hw, block, idx, tstamp); case ICE_MAC_GENERIC_3K_E825: return ice_read_ptp_tstamp_eth56g(hw, block, idx, tstamp); default: return -EOPNOTSUPP;
}
}
/** * ice_clear_phy_tstamp - Clear a timestamp from the timestamp block * @hw: pointer to the HW struct * @block: the block to read from * @idx: the timestamp index to reset * * Clear a timestamp from the timestamp block, discarding its value without * returning it. This resets the memory status bit for the timestamp index * allowing it to be reused for another timestamp in the future. * * For E822 devices, the block number is the PHY quad to clear from. For E810 * devices, the block number is the logical port to clear from. * * This function must only be called on a timestamp index whose valid bit is * set according to ice_get_phy_tx_tstamp_ready().
*/ int ice_clear_phy_tstamp(struct ice_hw *hw, u8 block, u8 idx)
{ switch (hw->mac_type) { case ICE_MAC_E810: return ice_clear_phy_tstamp_e810(hw, block, idx); case ICE_MAC_GENERIC: return ice_clear_phy_tstamp_e82x(hw, block, idx); case ICE_MAC_GENERIC_3K_E825: return ice_clear_ptp_tstamp_eth56g(hw, block, idx); default: return -EOPNOTSUPP;
}
}
/** * ice_get_pf_c827_idx - find and return the C827 index for the current pf * @hw: pointer to the hw struct * @idx: index of the found C827 PHY * Return: * * 0 - success * * negative - failure
*/ staticint ice_get_pf_c827_idx(struct ice_hw *hw, u8 *idx)
{ struct ice_aqc_get_link_topo cmd;
u8 node_part_number;
u16 node_handle; int status;
u8 ctx;
switch (hw->mac_type) { case ICE_MAC_E810: return ice_ptp_init_phc_e810(hw); case ICE_MAC_E830:
ice_ptp_init_phc_e830(hw); return 0; case ICE_MAC_GENERIC: return ice_ptp_init_phc_e82x(hw); case ICE_MAC_GENERIC_3K_E825: return 0; default: return -EOPNOTSUPP;
}
}
/** * ice_get_phy_tx_tstamp_ready - Read PHY Tx memory status indication * @hw: pointer to the HW struct * @block: the timestamp block to check * @tstamp_ready: storage for the PHY Tx memory status information * * Check the PHY for Tx timestamp memory status. This reports a 64 bit value * which indicates which timestamps in the block may be captured. A set bit * means the timestamp can be read. An unset bit means the timestamp is not * ready and software should avoid reading the register.
*/ int ice_get_phy_tx_tstamp_ready(struct ice_hw *hw, u8 block, u64 *tstamp_ready)
{ switch (hw->mac_type) { case ICE_MAC_E810: return ice_get_phy_tx_tstamp_ready_e810(hw, block,
tstamp_ready); case ICE_MAC_E830:
ice_get_phy_tx_tstamp_ready_e830(hw, block, tstamp_ready); return 0; case ICE_MAC_GENERIC: return ice_get_phy_tx_tstamp_ready_e82x(hw, block,
tstamp_ready); case ICE_MAC_GENERIC_3K_E825: return ice_get_phy_tx_tstamp_ready_eth56g(hw, block,
tstamp_ready); default: return -EOPNOTSUPP;
}
}
/** * ice_cgu_get_pin_desc_e823 - get pin description array * @hw: pointer to the hw struct * @input: if request is done against input or output pin * @size: number of inputs/outputs * * Return: pointer to pin description array associated to given hw.
*/ staticconststruct ice_cgu_pin_desc *
ice_cgu_get_pin_desc_e823(struct ice_hw *hw, bool input, int *size)
{ staticconststruct ice_cgu_pin_desc *t;
if (hw->cgu_part_number ==
ICE_AQC_GET_LINK_TOPO_NODE_NR_ZL30632_80032) { if (input) {
t = ice_e823_zl_cgu_inputs;
*size = ARRAY_SIZE(ice_e823_zl_cgu_inputs);
} else {
t = ice_e823_zl_cgu_outputs;
*size = ARRAY_SIZE(ice_e823_zl_cgu_outputs);
}
} elseif (hw->cgu_part_number ==
ICE_AQC_GET_LINK_TOPO_NODE_NR_SI5383_5384) { if (input) {
t = ice_e823_si_cgu_inputs;
*size = ARRAY_SIZE(ice_e823_si_cgu_inputs);
} else {
t = ice_e823_si_cgu_outputs;
*size = ARRAY_SIZE(ice_e823_si_cgu_outputs);
}
} else {
t = NULL;
*size = 0;
}
return t;
}
/** * ice_cgu_get_pin_desc - get pin description array * @hw: pointer to the hw struct * @input: if request is done against input or output pins * @size: size of array returned by function * * Return: pointer to pin description array associated to given hw.
*/ staticconststruct ice_cgu_pin_desc *
ice_cgu_get_pin_desc(struct ice_hw *hw, bool input, int *size)
{ conststruct ice_cgu_pin_desc *t = NULL;
switch (hw->device_id) { case ICE_DEV_ID_E810C_SFP: if (input) {
t = ice_e810t_sfp_cgu_inputs;
*size = ARRAY_SIZE(ice_e810t_sfp_cgu_inputs);
} else {
t = ice_e810t_sfp_cgu_outputs;
*size = ARRAY_SIZE(ice_e810t_sfp_cgu_outputs);
} break; case ICE_DEV_ID_E810C_QSFP: if (input) {
t = ice_e810t_qsfp_cgu_inputs;
*size = ARRAY_SIZE(ice_e810t_qsfp_cgu_inputs);
} else {
t = ice_e810t_qsfp_cgu_outputs;
*size = ARRAY_SIZE(ice_e810t_qsfp_cgu_outputs);
} break; case ICE_DEV_ID_E823L_10G_BASE_T: case ICE_DEV_ID_E823L_1GBE: case ICE_DEV_ID_E823L_BACKPLANE: case ICE_DEV_ID_E823L_QSFP: case ICE_DEV_ID_E823L_SFP: case ICE_DEV_ID_E823C_10G_BASE_T: case ICE_DEV_ID_E823C_BACKPLANE: case ICE_DEV_ID_E823C_QSFP: case ICE_DEV_ID_E823C_SFP: case ICE_DEV_ID_E823C_SGMII:
t = ice_cgu_get_pin_desc_e823(hw, input, size); break; default: break;
}
return t;
}
/** * ice_cgu_get_num_pins - get pin description array size * @hw: pointer to the hw struct * @input: if request is done against input or output pins * * Return: size of pin description array for given hw.
*/ int ice_cgu_get_num_pins(struct ice_hw *hw, bool input)
{ conststruct ice_cgu_pin_desc *t; int size;
t = ice_cgu_get_pin_desc(hw, input, &size); if (t) return size;
return 0;
}
/** * ice_cgu_get_pin_type - get pin's type * @hw: pointer to the hw struct * @pin: pin index * @input: if request is done against input or output pin * * Return: type of a pin.
*/ enum dpll_pin_type ice_cgu_get_pin_type(struct ice_hw *hw, u8 pin, bool input)
{ conststruct ice_cgu_pin_desc *t; int t_size;
t = ice_cgu_get_pin_desc(hw, input, &t_size);
if (!t) return 0;
if (pin >= t_size) return 0;
return t[pin].type;
}
/** * ice_cgu_get_pin_freq_supp - get pin's supported frequency * @hw: pointer to the hw struct * @pin: pin index * @input: if request is done against input or output pin * @num: output number of supported frequencies * * Get frequency supported number and array of supported frequencies. * * Return: array of supported frequencies for given pin.
*/ struct dpll_pin_frequency *
ice_cgu_get_pin_freq_supp(struct ice_hw *hw, u8 pin, bool input, u8 *num)
{ conststruct ice_cgu_pin_desc *t; int t_size;
*num = 0;
t = ice_cgu_get_pin_desc(hw, input, &t_size); if (!t) return NULL; if (pin >= t_size) return NULL;
*num = t[pin].freq_supp_num;
return t[pin].freq_supp;
}
/** * ice_cgu_get_pin_name - get pin's name * @hw: pointer to the hw struct * @pin: pin index * @input: if request is done against input or output pin * * Return: * * null terminated char array with name * * NULL in case of failure
*/ constchar *ice_cgu_get_pin_name(struct ice_hw *hw, u8 pin, bool input)
{ conststruct ice_cgu_pin_desc *t; int t_size;
t = ice_cgu_get_pin_desc(hw, input, &t_size);
if (!t) return NULL;
if (pin >= t_size) return NULL;
return t[pin].name;
}
/** * ice_get_cgu_state - get the state of the DPLL * @hw: pointer to the hw struct * @dpll_idx: Index of internal DPLL unit * @last_dpll_state: last known state of DPLL * @pin: pointer to a buffer for returning currently active pin * @ref_state: reference clock state * @eec_mode: eec mode of the DPLL * @phase_offset: pointer to a buffer for returning phase offset * @dpll_state: state of the DPLL (output) * * This function will read the state of the DPLL(dpll_idx). Non-null * 'pin', 'ref_state', 'eec_mode' and 'phase_offset' parameters are used to * retrieve currently active pin, state, mode and phase_offset respectively. * * Return: state of the DPLL
*/ int ice_get_cgu_state(struct ice_hw *hw, u8 dpll_idx, enum dpll_lock_status last_dpll_state, u8 *pin,
u8 *ref_state, u8 *eec_mode, s64 *phase_offset, enum dpll_lock_status *dpll_state)
{
u8 hw_ref_state, hw_dpll_state, hw_eec_mode, hw_config;
s64 hw_phase_offset; int status;
status = ice_aq_get_cgu_dpll_status(hw, dpll_idx, &hw_ref_state,
&hw_dpll_state, &hw_config,
&hw_phase_offset, &hw_eec_mode); if (status) return status;
if (pin) /* current ref pin in dpll_state_refsel_status_X register */
*pin = hw_config & ICE_AQC_GET_CGU_DPLL_CONFIG_CLK_REF_SEL; if (phase_offset)
*phase_offset = hw_phase_offset; if (ref_state)
*ref_state = hw_ref_state; if (eec_mode)
*eec_mode = hw_eec_mode; if (!dpll_state) return 0;
/* According to ZL DPLL documentation, once state reach LOCKED_HO_ACQ * it would never return to FREERUN. This aligns to ITU-T G.781 * Recommendation. We cannot report HOLDOVER as HO memory is cleared * while switching to another reference. * Only for situations where previous state was either: "LOCKED without * HO_ACQ" or "HOLDOVER" we actually back to FREERUN.
*/ if (hw_dpll_state & ICE_AQC_GET_CGU_DPLL_STATUS_STATE_LOCK) { if (hw_dpll_state & ICE_AQC_GET_CGU_DPLL_STATUS_STATE_HO_READY)
*dpll_state = DPLL_LOCK_STATUS_LOCKED_HO_ACQ; else
*dpll_state = DPLL_LOCK_STATUS_LOCKED;
} elseif (last_dpll_state == DPLL_LOCK_STATUS_LOCKED_HO_ACQ ||
last_dpll_state == DPLL_LOCK_STATUS_HOLDOVER) {
*dpll_state = DPLL_LOCK_STATUS_HOLDOVER;
} else {
*dpll_state = DPLL_LOCK_STATUS_UNLOCKED;
}
return 0;
}
/** * ice_get_cgu_rclk_pin_info - get info on available recovered clock pins * @hw: pointer to the hw struct * @base_idx: returns index of first recovered clock pin on device * @pin_num: returns number of recovered clock pins available on device * * Based on hw provide caller info about recovery clock pins available on the * board. * * Return: * * 0 - success, information is valid * * negative - failure, information is not valid
*/ int ice_get_cgu_rclk_pin_info(struct ice_hw *hw, u8 *base_idx, u8 *pin_num)
{
u8 phy_idx; int ret;
switch (hw->device_id) { case ICE_DEV_ID_E810C_SFP: case ICE_DEV_ID_E810C_QSFP:
ret = ice_get_pf_c827_idx(hw, &phy_idx); if (ret) return ret;
*base_idx = E810T_CGU_INPUT_C827(phy_idx, ICE_RCLKA_PIN);
*pin_num = ICE_E810_RCLK_PINS_NUM;
ret = 0; break; case ICE_DEV_ID_E823L_10G_BASE_T: case ICE_DEV_ID_E823L_1GBE: case ICE_DEV_ID_E823L_BACKPLANE: case ICE_DEV_ID_E823L_QSFP: case ICE_DEV_ID_E823L_SFP: case ICE_DEV_ID_E823C_10G_BASE_T: case ICE_DEV_ID_E823C_BACKPLANE: case ICE_DEV_ID_E823C_QSFP: case ICE_DEV_ID_E823C_SFP: case ICE_DEV_ID_E823C_SGMII:
*pin_num = ICE_E82X_RCLK_PINS_NUM;
ret = 0; if (hw->cgu_part_number ==
ICE_AQC_GET_LINK_TOPO_NODE_NR_ZL30632_80032)
*base_idx = ZL_REF1P; elseif (hw->cgu_part_number ==
ICE_AQC_GET_LINK_TOPO_NODE_NR_SI5383_5384)
*base_idx = SI_REF1P; else
ret = -ENODEV;
break; default:
ret = -ENODEV; break;
}
return ret;
}
/** * ice_cgu_get_output_pin_state_caps - get output pin state capabilities * @hw: pointer to the hw struct * @pin_id: id of a pin * @caps: capabilities to modify * * Return: * * 0 - success, state capabilities were modified * * negative - failure, capabilities were not modified
*/ int ice_cgu_get_output_pin_state_caps(struct ice_hw *hw, u8 pin_id, unsignedlong *caps)
{ bool can_change = true;
switch (hw->device_id) { case ICE_DEV_ID_E810C_SFP: if (pin_id == ZL_OUT2 || pin_id == ZL_OUT3)
can_change = false; break; case ICE_DEV_ID_E810C_QSFP: if (pin_id == ZL_OUT2 || pin_id == ZL_OUT3 || pin_id == ZL_OUT4)
can_change = false; break; case ICE_DEV_ID_E823L_10G_BASE_T: case ICE_DEV_ID_E823L_1GBE: case ICE_DEV_ID_E823L_BACKPLANE: case ICE_DEV_ID_E823L_QSFP: case ICE_DEV_ID_E823L_SFP: case ICE_DEV_ID_E823C_10G_BASE_T: case ICE_DEV_ID_E823C_BACKPLANE: case ICE_DEV_ID_E823C_QSFP: case ICE_DEV_ID_E823C_SFP: case ICE_DEV_ID_E823C_SGMII: if (hw->cgu_part_number ==
ICE_AQC_GET_LINK_TOPO_NODE_NR_ZL30632_80032 &&
pin_id == ZL_OUT2)
can_change = false; elseif (hw->cgu_part_number ==
ICE_AQC_GET_LINK_TOPO_NODE_NR_SI5383_5384 &&
pin_id == SI_OUT1)
can_change = false; break; default: return -EINVAL;
} if (can_change)
*caps |= DPLL_PIN_CAPABILITIES_STATE_CAN_CHANGE; else
*caps &= ~DPLL_PIN_CAPABILITIES_STATE_CAN_CHANGE;
return 0;
}
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