@@ -39,6 +39,14 @@ do { \
writel((val), &hw_addr[(reg)]); \
} while (0)
+/* Switch register write operations, index using DWORDS */
+#define fm10k_write_sw_reg(hw, reg, val) \
+do { \
+ u32 __iomem *sw_addr = ACCESS_ONCE((hw)->sw_addr); \
+ if (!FM10K_REMOVED(sw_addr)) \
+ writel((val), &sw_addr[(reg)]); \
+} while (0)
+
/* read ctrl register which has no clear on read fields as PCIe flush */
#define fm10k_write_flush(hw) fm10k_read_reg((hw), FM10K_CTRL)
s32 fm10k_get_bus_info_generic(struct fm10k_hw *hw);
@@ -1123,6 +1123,19 @@ static void fm10k_iov_update_stats_pf(struct fm10k_hw *hw,
fm10k_update_hw_stats_q(hw, q, idx, qpp);
}
+static s32 fm10k_iov_report_timestamp_pf(struct fm10k_hw *hw,
+ struct fm10k_vf_info *vf_info,
+ u64 timestamp)
+{
+ u32 msg[4];
+
+ /* generate port state response to notify VF it is not ready */
+ fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_1588);
+ fm10k_tlv_attr_put_u64(msg, FM10K_1588_MSG_TIMESTAMP, timestamp);
+
+ return vf_info->mbx.ops.enqueue_tx(hw, &vf_info->mbx, msg);
+}
+
/**
* fm10k_iov_msg_msix_pf - Message handler for MSI-X request from VF
* @hw: Pointer to hardware structure
@@ -1723,6 +1736,89 @@ s32 fm10k_msg_err_pf(struct fm10k_hw *hw, u32 **results,
return 0;
}
+const struct fm10k_tlv_attr fm10k_1588_timestamp_msg_attr[] = {
+ FM10K_TLV_ATTR_LE_STRUCT(FM10K_PF_ATTR_ID_1588_TIMESTAMP,
+ sizeof(struct fm10k_swapi_1588_timestamp)),
+ FM10K_TLV_ATTR_LAST
+};
+
+/* currently there is no shared 1588 timestamp handler */
+
+/**
+ * fm10k_adjust_systime_pf - Adjust systime frequency
+ * @hw: pointer to hardware structure
+ * @ppb: adjustment rate in parts per billion
+ *
+ * This function will adjust the SYSTIME_CFG register contained in BAR 4
+ * if this function is supported for BAR 4 access. The adjustment amount
+ * is based on the parts per billion value provided and adjusted to a
+ * value based on parts per 2^48 clock cycles.
+ *
+ * If adjustment is not supported or the requested value is too large
+ * we will return an error.
+ **/
+static s32 fm10k_adjust_systime_pf(struct fm10k_hw *hw, s32 ppb)
+{
+ u64 systime_adjust;
+
+ /* if sw_addr is not set we don't have switch register access */
+ if (!hw->sw_addr)
+ return ppb ? FM10K_ERR_PARAM : 0;
+
+ /* we must convert the value from parts per billion to parts per
+ * 2^48 cycles. In addition I have opted to only use the 30 most
+ * significant bits of the adjustment value as the 8 least
+ * significant bits are located in another register and represent
+ * a value significantly less than a part per billion, the result
+ * of dropping the 8 least significant bits is that the adjustment
+ * value is effectively multiplied by 2^8 when we write it.
+ *
+ * As a result of all this the math for this breaks down as follows:
+ * ppb / 10^9 == adjust * 2^8 / 2^48
+ * If we solve this for adjust, and simplify it comes out as:
+ * ppb * 2^31 / 5^9 == adjust
+ */
+ systime_adjust = (ppb < 0) ? -ppb : ppb;
+ systime_adjust <<= 31;
+ do_div(systime_adjust, 1953125);
+
+ /* verify the requested adjustment value is in range */
+ if (systime_adjust > FM10K_SW_SYSTIME_ADJUST_MASK)
+ return FM10K_ERR_PARAM;
+
+ if (ppb < 0)
+ systime_adjust |= FM10K_SW_SYSTIME_ADJUST_DIR_NEGATIVE;
+
+ fm10k_write_sw_reg(hw, FM10K_SW_SYSTIME_ADJUST, (u32)systime_adjust);
+
+ return 0;
+}
+
+/**
+ * fm10k_read_systime_pf - Reads value of systime registers
+ * @hw: pointer to the hardware structure
+ *
+ * Function reads the content of 2 registers, combined to represent a 64 bit
+ * value measured in nanosecods. In order to guarantee the value is accurate
+ * we check the 32 most significant bits both before and after reading the
+ * 32 least significant bits to verify they didn't change as we were reading
+ * the registers.
+ **/
+static u64 fm10k_read_systime_pf(struct fm10k_hw *hw)
+{
+ u32 systime_l, systime_h, systime_tmp;
+
+ systime_h = fm10k_read_reg(hw, FM10K_SYSTIME + 1);
+
+ do {
+ systime_tmp = systime_h;
+ systime_l = fm10k_read_reg(hw, FM10K_SYSTIME);
+ systime_h = fm10k_read_reg(hw, FM10K_SYSTIME + 1);
+ } while (systime_tmp != systime_h);
+
+ return ((u64)systime_h << 32) | systime_l;
+}
+
static const struct fm10k_msg_data fm10k_msg_data_pf[] = {
FM10K_PF_MSG_ERR_HANDLER(XCAST_MODES, fm10k_msg_err_pf),
FM10K_PF_MSG_ERR_HANDLER(UPDATE_MAC_FWD_RULE, fm10k_msg_err_pf),
@@ -1753,6 +1849,8 @@ static struct fm10k_mac_ops mac_ops_pf = {
.set_dma_mask = &fm10k_set_dma_mask_pf,
.get_fault = &fm10k_get_fault_pf,
.get_host_state = &fm10k_get_host_state_pf,
+ .adjust_systime = &fm10k_adjust_systime_pf,
+ .read_systime = &fm10k_read_systime_pf,
};
static struct fm10k_iov_ops iov_ops_pf = {
@@ -1764,6 +1862,7 @@ static struct fm10k_iov_ops iov_ops_pf = {
.set_lport = &fm10k_iov_set_lport_pf,
.reset_lport = &fm10k_iov_reset_lport_pf,
.update_stats = &fm10k_iov_update_stats_pf,
+ .report_timestamp = &fm10k_iov_report_timestamp_pf,
};
static s32 fm10k_get_invariants_pf(struct fm10k_hw *hw)
@@ -224,6 +224,11 @@ struct fm10k_hw;
#define FM10K_STATS_LOOPBACK_DROP 0x3806
#define FM10K_STATS_NODESC_DROP 0x3807
+/* Timesync registers */
+#define FM10K_SYSTIME 0x3814
+#define FM10K_SYSTIME_CFG 0x3818
+#define FM10K_SYSTIME_CFG_STEP_MASK 0x0000000F
+
/* PCIe state registers */
#define FM10K_PHYADDR 0x381C
@@ -358,6 +363,12 @@ struct fm10k_hw;
#define FM10K_VFSYSTIME 0x00040
#define FM10K_VFITR(_n) ((_n) + 0x00060)
+/* Registers contained in BAR 4 for Switch management */
+#define FM10K_SW_SYSTIME_ADJUST 0x0224D
+#define FM10K_SW_SYSTIME_ADJUST_MASK 0x3FFFFFFF
+#define FM10K_SW_SYSTIME_ADJUST_DIR_NEGATIVE 0x80000000
+#define FM10K_SW_SYSTIME_PULSE(_n) ((_n) + 0x02252)
+
enum fm10k_int_source {
fm10k_int_Mailbox = 0,
fm10k_int_PCIeFault = 1,
@@ -524,6 +535,7 @@ struct fm10k_mac_ops {
s32 (*get_fault)(struct fm10k_hw *, int, struct fm10k_fault *);
void (*request_lport_map)(struct fm10k_hw *);
s32 (*adjust_systime)(struct fm10k_hw *, s32 ppb);
+ u64 (*read_systime)(struct fm10k_hw *);
};
enum fm10k_mac_type {
@@ -614,6 +626,7 @@ struct fm10k_iov_ops {
s32 (*set_lport)(struct fm10k_hw *, struct fm10k_vf_info *, u16, u8);
void (*reset_lport)(struct fm10k_hw *, struct fm10k_vf_info *);
void (*update_stats)(struct fm10k_hw *, struct fm10k_hw_stats_q *, u16);
+ s32 (*report_timestamp)(struct fm10k_hw *, struct fm10k_vf_info *, u64);
};
struct fm10k_iov_info {
@@ -637,6 +650,7 @@ struct fm10k_info {
struct fm10k_hw {
u32 __iomem *hw_addr;
+ u32 __iomem *sw_addr;
void *back;
struct fm10k_mac_info mac;
struct fm10k_bus_info bus;
@@ -431,6 +431,13 @@ static s32 fm10k_update_xcast_mode_vf(struct fm10k_hw *hw, u16 glort, u8 mode)
return mbx->ops.enqueue_tx(hw, mbx, msg);
}
+const struct fm10k_tlv_attr fm10k_1588_msg_attr[] = {
+ FM10K_TLV_ATTR_U64(FM10K_1588_MSG_TIMESTAMP),
+ FM10K_TLV_ATTR_LAST
+};
+
+/* currently there is no shared 1588 timestamp handler */
+
/**
* fm10k_update_hw_stats_vf - Updates hardware related statistics of VF
* @hw: pointer to hardware structure
@@ -482,6 +489,52 @@ static s32 fm10k_configure_dglort_map_vf(struct fm10k_hw *hw,
return 0;
}
+/**
+ * fm10k_adjust_systime_vf - Adjust systime frequency
+ * @hw: pointer to hardware structure
+ * @ppb: adjustment rate in parts per billion
+ *
+ * This function takes an adjustment rate in parts per billion and will
+ * verify that this value is 0 as the VF cannot support adjusting the
+ * systime clock.
+ *
+ * If the ppb value is non-zero the return is ERR_PARAM else success
+ **/
+static s32 fm10k_adjust_systime_vf(struct fm10k_hw *hw, s32 ppb)
+{
+ /* The VF cannot adjust the clock frequency, however it should
+ * already have a syntonic clock with whichever host interface is
+ * running as the master for the host interface clock domain so
+ * there should be not frequency adjustment necessary.
+ */
+ return ppb ? FM10K_ERR_PARAM : 0;
+}
+
+/**
+ * fm10k_read_systime_vf - Reads value of systime registers
+ * @hw: pointer to the hardware structure
+ *
+ * Function reads the content of 2 registers, combined to represent a 64 bit
+ * value measured in nanosecods. In order to guarantee the value is accurate
+ * we check the 32 most significant bits both before and after reading the
+ * 32 least significant bits to verify they didn't change as we were reading
+ * the registers.
+ **/
+static u64 fm10k_read_systime_vf(struct fm10k_hw *hw)
+{
+ u32 systime_l, systime_h, systime_tmp;
+
+ systime_h = fm10k_read_reg(hw, FM10K_VFSYSTIME + 1);
+
+ do {
+ systime_tmp = systime_h;
+ systime_l = fm10k_read_reg(hw, FM10K_VFSYSTIME);
+ systime_h = fm10k_read_reg(hw, FM10K_VFSYSTIME + 1);
+ } while (systime_tmp != systime_h);
+
+ return ((u64)systime_h << 32) | systime_l;
+}
+
static const struct fm10k_msg_data fm10k_msg_data_vf[] = {
FM10K_TLV_MSG_TEST_HANDLER(fm10k_tlv_msg_test),
FM10K_VF_MSG_MAC_VLAN_HANDLER(fm10k_msg_mac_vlan_vf),
@@ -507,6 +560,8 @@ static struct fm10k_mac_ops mac_ops_vf = {
.rebind_hw_stats = &fm10k_rebind_hw_stats_vf,
.configure_dglort_map = &fm10k_configure_dglort_map_vf,
.get_host_state = &fm10k_get_host_state_generic,
+ .adjust_systime = &fm10k_adjust_systime_vf,
+ .read_systime = &fm10k_read_systime_vf,
};
static s32 fm10k_get_invariants_vf(struct fm10k_hw *hw)
@@ -29,6 +29,7 @@ enum fm10k_vf_tlv_msg_id {
FM10K_VF_MSG_ID_MSIX,
FM10K_VF_MSG_ID_MAC_VLAN,
FM10K_VF_MSG_ID_LPORT_STATE,
+ FM10K_VF_MSG_ID_1588,
FM10K_VF_MSG_ID_MAX,
};
@@ -48,6 +49,11 @@ enum fm10k_tlv_lport_state_attr_id {
FM10K_LPORT_STATE_MSG_MAX
};
+enum fm10k_tlv_1588_attr_id {
+ FM10K_1588_MSG_TIMESTAMP,
+ FM10K_1588_MSG_MAX
+};
+
#define FM10K_VF_MSG_MSIX_HANDLER(func) \
FM10K_MSG_HANDLER(FM10K_VF_MSG_ID_MSIX, NULL, func)
@@ -64,5 +70,9 @@ extern const struct fm10k_tlv_attr fm10k_lport_state_msg_attr[];
FM10K_MSG_HANDLER(FM10K_VF_MSG_ID_LPORT_STATE, \
fm10k_lport_state_msg_attr, func)
+extern const struct fm10k_tlv_attr fm10k_1588_msg_attr[];
+#define FM10K_VF_MSG_1588_HANDLER(func) \
+ FM10K_MSG_HANDLER(FM10K_VF_MSG_ID_1588, fm10k_1588_msg_attr, func)
+
extern struct fm10k_info fm10k_vf_info;
#endif /* _FM10K_VF_H */