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Message-ID: <20240709123629.666151-7-karol.kolacinski@intel.com>
Date: Tue, 9 Jul 2024 14:34:55 +0200
From: Karol Kolacinski <karol.kolacinski@...el.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
anthony.l.nguyen@...el.com,
przemyslaw.kitszel@...el.com,
Michal Michalik <michal.michalik@...el.com>,
Milena Olech <milena.olech@...el.com>,
Paul Greenwalt <paul.greenwalt@...el.com>,
Karol Kolacinski <karol.kolacinski@...el.com>
Subject: [PATCH iwl-next 1/4] ice: Implement PTP support for E830 devices
From: Michal Michalik <michal.michalik@...el.com>
Add specific functions and definitions for E830 devices to enable
PTP support.
Introduce new PHY model ICE_PHY_E830.
E830 devices support direct write to GLTSYN_ registers without shadow
registers and 64 bit read of PHC time.
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Co-developed-by: Milena Olech <milena.olech@...el.com>
Signed-off-by: Milena Olech <milena.olech@...el.com>
Co-developed-by: Paul Greenwalt <paul.greenwalt@...el.com>
Signed-off-by: Paul Greenwalt <paul.greenwalt@...el.com>
Signed-off-by: Michal Michalik <michal.michalik@...el.com>
Co-developed-by: Karol Kolacinski <karol.kolacinski@...el.com>
Signed-off-by: Karol Kolacinski <karol.kolacinski@...el.com>
---
drivers/net/ethernet/intel/ice/ice_common.c | 11 +
drivers/net/ethernet/intel/ice/ice_common.h | 1 +
.../net/ethernet/intel/ice/ice_hw_autogen.h | 4 +
drivers/net/ethernet/intel/ice/ice_ptp.c | 11 +-
drivers/net/ethernet/intel/ice/ice_ptp_hw.c | 197 ++++++++++++++++--
drivers/net/ethernet/intel/ice/ice_ptp_hw.h | 25 ++-
drivers/net/ethernet/intel/ice/ice_type.h | 1 +
7 files changed, 223 insertions(+), 27 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index 009716a12a26..005054439204 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -307,6 +307,17 @@ bool ice_is_e825c(struct ice_hw *hw)
}
}
+/**
+ * ice_is_e830
+ * @hw: pointer to the hardware structure
+ *
+ * returns true if the device is E830 based, false if not.
+ */
+bool ice_is_e830(const struct ice_hw *hw)
+{
+ return hw->mac_type == ICE_MAC_E830;
+}
+
/**
* ice_clear_pf_cfg - Clear PF configuration
* @hw: pointer to the hardware structure
diff --git a/drivers/net/ethernet/intel/ice/ice_common.h b/drivers/net/ethernet/intel/ice/ice_common.h
index 27208a60cece..21a4d9734168 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.h
+++ b/drivers/net/ethernet/intel/ice/ice_common.h
@@ -279,6 +279,7 @@ bool ice_is_e810t(struct ice_hw *hw);
bool ice_is_e822(struct ice_hw *hw);
bool ice_is_e823(struct ice_hw *hw);
bool ice_is_e825c(struct ice_hw *hw);
+bool ice_is_e830(const struct ice_hw *hw);
int
ice_sched_query_elem(struct ice_hw *hw, u32 node_teid,
struct ice_aqc_txsched_elem_data *buf);
diff --git a/drivers/net/ethernet/intel/ice/ice_hw_autogen.h b/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
index 91cbae1eec89..646089f3e26c 100644
--- a/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
+++ b/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
@@ -533,10 +533,14 @@
#define PFPM_WUS_MAG_M BIT(1)
#define PFPM_WUS_MNG_M BIT(3)
#define PFPM_WUS_FW_RST_WK_M BIT(31)
+#define E830_PRTMAC_TS_TX_MEM_VALID_H 0x001E2020
+#define E830_PRTMAC_TS_TX_MEM_VALID_L 0x001E2000
#define E830_PRTMAC_CL01_PS_QNT 0x001E32A0
#define E830_PRTMAC_CL01_PS_QNT_CL0_M GENMASK(15, 0)
#define E830_PRTMAC_CL01_QNT_THR 0x001E3320
#define E830_PRTMAC_CL01_QNT_THR_CL0_M GENMASK(15, 0)
+#define E830_PRTTSYN_TXTIME_H(_i) (0x001E5800 + ((_i) * 32))
+#define E830_PRTTSYN_TXTIME_L(_i) (0x001E5000 + ((_i) * 32))
#define VFINT_DYN_CTLN(_i) (0x00003800 + ((_i) * 4))
#define VFINT_DYN_CTLN_CLEARPBA_M BIT(1)
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c
index 30ebf3efc86b..b1a8ec549f6a 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp.c
@@ -309,6 +309,15 @@ ice_ptp_read_src_clk_reg(struct ice_pf *pf, struct ptp_system_timestamp *sts)
/* Read the system timestamp pre PHC read */
ptp_read_system_prets(sts);
+ if (ice_is_e830(hw)) {
+ u64 clk_time = rd64(hw, E830_GLTSYN_TIME_L(tmr_idx));
+
+ /* Read the system timestamp post PHC read */
+ ptp_read_system_postts(sts);
+
+ return clk_time;
+ }
+
lo = rd32(hw, GLTSYN_TIME_L(tmr_idx));
/* Read the system timestamp post PHC read */
@@ -2481,7 +2490,7 @@ static void ice_ptp_set_caps(struct ice_pf *pf)
info->enable = ice_ptp_gpio_enable;
info->verify = ice_verify_pin;
- if (ice_is_e810(&pf->hw))
+ if (ice_is_e810(&pf->hw) || ice_is_e830(&pf->hw))
ice_ptp_set_funcs_e810(pf);
else
ice_ptp_set_funcs_e82x(pf);
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp_hw.c b/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
index 1d6b05554b08..6ad23665bbd1 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptp_hw.c
@@ -874,6 +874,17 @@ static void ice_ptp_exec_tmr_cmd(struct ice_hw *hw)
ice_flush(hw);
}
+/**
+ * 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
+ */
+static void ice_ptp_cfg_sync_delay(struct 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.
@@ -1497,7 +1508,8 @@ static int ice_read_ptp_tstamp_eth56g(struct ice_hw *hw, u8 port, u8 idx,
* lower 8 bits in the low register, and the upper 32 bits in the high
* register.
*/
- *tstamp = ((u64)hi) << TS_PHY_HIGH_S | ((u64)lo & TS_PHY_LOW_M);
+ *tstamp = FIELD_PREP(PHY_40B_HIGH_M, hi) |
+ FIELD_PREP(PHY_40B_LOW_M, lo);
return 0;
}
@@ -3178,7 +3190,8 @@ ice_read_phy_tstamp_e82x(struct ice_hw *hw, u8 quad, u8 idx, u64 *tstamp)
* lower 8 bits in the low register, and the upper 32 bits in the high
* register.
*/
- *tstamp = FIELD_PREP(TS_PHY_HIGH_M, hi) | FIELD_PREP(TS_PHY_LOW_M, lo);
+ *tstamp = FIELD_PREP(PHY_40B_HIGH_M, hi) |
+ FIELD_PREP(PHY_40B_LOW_M, lo);
return 0;
}
@@ -4932,7 +4945,8 @@ ice_read_phy_tstamp_e810(struct ice_hw *hw, u8 lport, u8 idx, u64 *tstamp)
/* 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 = ((u64)hi) << TS_HIGH_S | ((u64)lo & TS_LOW_M);
+ *tstamp = FIELD_PREP(PHY_EXT_40B_HIGH_M, hi) |
+ FIELD_PREP(PHY_EXT_40B_LOW_M, lo);
return 0;
}
@@ -4995,8 +5009,7 @@ static int ice_ptp_init_phc_e810(struct ice_hw *hw)
u8 tmr_idx;
int err;
- /* Ensure synchronization delay is zero */
- wr32(hw, GLTSYN_SYNC_DLAY, 0);
+ ice_ptp_cfg_sync_delay(hw, ICE_E810_E830_SYNC_DELAY);
tmr_idx = hw->func_caps.ts_func_info.tmr_index_owned;
err = ice_write_phy_reg_e810(hw, ETH_GLTSYN_ENA(tmr_idx),
@@ -5324,11 +5337,140 @@ static void ice_ptp_init_phy_e810(struct ice_ptp_hw *ptp)
ptp->ports_per_phy = 4;
}
+/* E830 functions
+ *
+ * The following functions operate on the E830 series devices.
+ *
+ */
+
+/**
+ * ice_ptp_init_phc_e830 - Perform E830 specific PHC initialization
+ * @hw: pointer to HW struct
+ *
+ * Perform E830-specific PTP hardware clock initialization steps.
+ */
+static int ice_ptp_init_phc_e830(struct ice_hw *hw)
+{
+ ice_ptp_cfg_sync_delay(hw, ICE_E810_E830_SYNC_DELAY);
+ return 0;
+}
+
+/**
+ * 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.
+ */
+static int ice_ptp_write_direct_incval_e830(struct ice_hw *hw, u64 incval)
+{
+ u8 tmr_idx = hw->func_caps.ts_func_info.tmr_index_owned;
+
+ wr32(hw, GLTSYN_INCVAL_L(tmr_idx), lower_32_bits(incval));
+ wr32(hw, GLTSYN_INCVAL_H(tmr_idx), upper_32_bits(incval));
+
+ return 0;
+}
+
+/**
+ * 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.
+ */
+static int ice_ptp_write_direct_phc_time_e830(struct ice_hw *hw, u64 time)
+{
+ u8 tmr_idx = hw->func_caps.ts_func_info.tmr_index_owned;
+
+ wr32(hw, GLTSYN_TIME_0(tmr_idx), 0);
+ wr32(hw, GLTSYN_TIME_L(tmr_idx), lower_32_bits(time));
+ wr32(hw, GLTSYN_TIME_H(tmr_idx), upper_32_bits(time));
+
+ return 0;
+}
+
+/**
+ * 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.
+ */
+static int 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);
+
+ return ice_write_phy_reg_e810(hw, E830_ETH_GLTSYN_CMD, val);
+}
+
+/**
+ * ice_read_phy_tstamp_e830 - 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 E830 device.
+ */
+static int
+ice_read_phy_tstamp_e830(struct ice_hw *hw, u8 lport, u8 idx, u64 *tstamp)
+{
+ u32 hi, lo;
+
+ hi = rd32(hw, E830_HIGH_TX_MEMORY_BANK(idx, lport));
+ lo = rd32(hw, E830_LOW_TX_MEMORY_BANK(idx, lport));
+
+ /* 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);
+
+ return 0;
+}
+
+/**
+ * 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
+ *
+ */
+static int
+ice_get_phy_tx_tstamp_ready_e830(struct 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);
+
+ return 0;
+}
+
+/**
+ * ice_ptp_init_phy_e830 - initialize PHY parameters
+ * @ptp: pointer to the PTP HW struct
+ */
+static void ice_ptp_init_phy_e830(struct ice_ptp_hw *ptp)
+{
+ ptp->phy_model = ICE_PHY_E830;
+ ptp->num_lports = 8;
+ ptp->ports_per_phy = 4;
+}
+
/* Device agnostic functions
*
- * The following functions implement shared behavior common to both E822 and
- * E810 devices, possibly calling a device specific implementation where
- * necessary.
+ * The following functions implement shared behavior common to all devices,
+ * possibly calling a device specific implementation where necessary.
*/
/**
@@ -5391,12 +5533,14 @@ void ice_ptp_init_hw(struct ice_hw *hw)
{
struct ice_ptp_hw *ptp = &hw->ptp;
- if (ice_is_e822(hw) || ice_is_e823(hw))
- ice_ptp_init_phy_e82x(ptp);
- else if (ice_is_e810(hw))
+ if (ice_is_e810(hw))
ice_ptp_init_phy_e810(ptp);
+ else if (ice_is_e822(hw) || ice_is_e823(hw))
+ ice_ptp_init_phy_e82x(ptp);
else if (ice_is_e825c(hw))
ice_ptp_init_phy_e825c(hw);
+ else if (ice_is_e830(hw))
+ ice_ptp_init_phy_e830(ptp);
else
ptp->phy_model = ICE_PHY_UNSUP;
}
@@ -5487,6 +5631,8 @@ static int ice_ptp_port_cmd(struct ice_hw *hw, enum ice_ptp_tmr_cmd cmd)
switch (ice_get_phy_model(hw)) {
case ICE_PHY_E810:
return ice_ptp_port_cmd_e810(hw, cmd);
+ case ICE_PHY_E830:
+ return ice_ptp_port_cmd_e830(hw, cmd);
default:
break;
}
@@ -5557,6 +5703,10 @@ int ice_ptp_init_time(struct ice_hw *hw, u64 time)
tmr_idx = hw->func_caps.ts_func_info.tmr_index_owned;
/* Source timers */
+ /* For E830 we don't need to use shadow registers, its automatic */
+ if (hw->ptp.phy_model == ICE_PHY_E830)
+ return ice_ptp_write_direct_phc_time_e830(hw, time);
+
wr32(hw, GLTSYN_SHTIME_L(tmr_idx), lower_32_bits(time));
wr32(hw, GLTSYN_SHTIME_H(tmr_idx), upper_32_bits(time));
wr32(hw, GLTSYN_SHTIME_0(tmr_idx), 0);
@@ -5605,6 +5755,10 @@ int ice_ptp_write_incval(struct ice_hw *hw, u64 incval)
tmr_idx = hw->func_caps.ts_func_info.tmr_index_owned;
+ /* For E830 we don't need to use shadow registers, its automatic */
+ if (hw->ptp.phy_model == ICE_PHY_E830)
+ return ice_ptp_write_direct_incval_e830(hw, incval);
+
/* Shadow Adjust */
wr32(hw, GLTSYN_SHADJ_L(tmr_idx), lower_32_bits(incval));
wr32(hw, GLTSYN_SHADJ_H(tmr_idx), upper_32_bits(incval));
@@ -5712,12 +5866,14 @@ int ice_ptp_adj_clock(struct ice_hw *hw, s32 adj)
int ice_read_phy_tstamp(struct ice_hw *hw, u8 block, u8 idx, u64 *tstamp)
{
switch (ice_get_phy_model(hw)) {
- case ICE_PHY_ETH56G:
- return ice_read_ptp_tstamp_eth56g(hw, block, idx, tstamp);
case ICE_PHY_E810:
return ice_read_phy_tstamp_e810(hw, block, idx, tstamp);
case ICE_PHY_E82X:
return ice_read_phy_tstamp_e82x(hw, block, idx, tstamp);
+ case ICE_PHY_E830:
+ return ice_read_phy_tstamp_e830(hw, block, idx, tstamp);
+ case ICE_PHY_ETH56G:
+ return ice_read_ptp_tstamp_eth56g(hw, block, idx, tstamp);
default:
return -EOPNOTSUPP;
}
@@ -5834,12 +5990,14 @@ int ice_ptp_init_phc(struct ice_hw *hw)
(void)rd32(hw, GLTSYN_STAT(src_idx));
switch (ice_get_phy_model(hw)) {
- case ICE_PHY_ETH56G:
- return ice_ptp_init_phc_eth56g(hw);
case ICE_PHY_E810:
return ice_ptp_init_phc_e810(hw);
case ICE_PHY_E82X:
return ice_ptp_init_phc_e82x(hw);
+ case ICE_PHY_E830:
+ return ice_ptp_init_phc_e830(hw);
+ case ICE_PHY_ETH56G:
+ return ice_ptp_init_phc_eth56g(hw);
default:
return -EOPNOTSUPP;
}
@@ -5859,15 +6017,18 @@ int ice_ptp_init_phc(struct ice_hw *hw)
int ice_get_phy_tx_tstamp_ready(struct ice_hw *hw, u8 block, u64 *tstamp_ready)
{
switch (ice_get_phy_model(hw)) {
- case ICE_PHY_ETH56G:
- return ice_get_phy_tx_tstamp_ready_eth56g(hw, block,
- tstamp_ready);
case ICE_PHY_E810:
return ice_get_phy_tx_tstamp_ready_e810(hw, block,
tstamp_ready);
case ICE_PHY_E82X:
return ice_get_phy_tx_tstamp_ready_e82x(hw, block,
tstamp_ready);
+ case ICE_PHY_E830:
+ return ice_get_phy_tx_tstamp_ready_e830(hw, block,
+ tstamp_ready);
+ case ICE_PHY_ETH56G:
+ return ice_get_phy_tx_tstamp_ready_eth56g(hw, block,
+ tstamp_ready);
break;
default:
return -EOPNOTSUPP;
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp_hw.h b/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
index 06500028c760..3a5dd65a9a80 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
+++ b/drivers/net/ethernet/intel/ice/ice_ptp_hw.h
@@ -327,6 +327,7 @@ extern const struct ice_vernier_info_e82x e822_vernier[NUM_ICE_PTP_LNK_SPD];
#define ICE_E810_PLL_FREQ 812500000
#define ICE_PTP_NOMINAL_INCVAL_E810 0x13b13b13bULL
#define ICE_E810_OUT_PROP_DELAY_NS 1
+#define ICE_E810_E830_SYNC_DELAY 0
#define ICE_E825C_OUT_PROP_DELAY_NS 11
/* Device agnostic functions */
@@ -673,18 +674,21 @@ static inline bool ice_is_primary(struct ice_hw *hw)
/* E810 timer command register */
#define E810_ETH_GLTSYN_CMD 0x03000344
+/* E830 timer command register */
+#define E830_ETH_GLTSYN_CMD 0x00088814
+
+/* E810 PHC time register */
+#define E830_GLTSYN_TIME_L(_tmr_idx) (0x0008A000 + 0x1000 * (_tmr_idx))
+
/* Source timer incval macros */
#define INCVAL_HIGH_M 0xFF
-/* Timestamp block macros */
+/* PHY 40b registers macros */
+#define PHY_EXT_40B_LOW_M GENMASK(31, 0)
+#define PHY_EXT_40B_HIGH_M GENMASK(39, 32)
+#define PHY_40B_LOW_M GENMASK(7, 0)
+#define PHY_40B_HIGH_M GENMASK(39, 8)
#define TS_VALID BIT(0)
-#define TS_LOW_M 0xFFFFFFFF
-#define TS_HIGH_M 0xFF
-#define TS_HIGH_S 32
-
-#define TS_PHY_LOW_M 0xFF
-#define TS_PHY_HIGH_M 0xFFFFFFFF
-#define TS_PHY_HIGH_S 8
#define BYTES_PER_IDX_ADDR_L_U 8
#define BYTES_PER_IDX_ADDR_L 4
@@ -708,6 +712,11 @@ static inline bool ice_is_primary(struct ice_hw *hw)
#define LOW_TX_MEMORY_BANK_START 0x03090000
#define HIGH_TX_MEMORY_BANK_START 0x03090004
+#define E830_LOW_TX_MEMORY_BANK(slot, port) \
+ (E830_PRTTSYN_TXTIME_L(slot) + 0x8 * (port))
+#define E830_HIGH_TX_MEMORY_BANK(slot, port) \
+ (E830_PRTTSYN_TXTIME_H(slot) + 0x8 * (port))
+
/* SMA controller pin control */
#define ICE_SMA1_DIR_EN BIT(4)
#define ICE_SMA1_TX_EN BIT(5)
diff --git a/drivers/net/ethernet/intel/ice/ice_type.h b/drivers/net/ethernet/intel/ice/ice_type.h
index b6bc2de53b0a..501994f057a7 100644
--- a/drivers/net/ethernet/intel/ice/ice_type.h
+++ b/drivers/net/ethernet/intel/ice/ice_type.h
@@ -866,6 +866,7 @@ enum ice_phy_model {
ICE_PHY_E810 = 1,
ICE_PHY_E82X,
ICE_PHY_ETH56G,
+ ICE_PHY_E830,
};
/* Global Link Topology */
--
2.45.2
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