1 files changed, 119 insertions, 84 deletions

diff --git a/drivers/net/chelsio/espi.c b/drivers/net/chelsio/espi.c
index 40af47b795e6..4192f0f5b3ee 100644
--- a/drivers/net/chelsio/espi.c
+++ b/drivers/net/chelsio/espi.c
@@ -81,46 +81,36 @@ static int tricn_write(adapter_t *adapter, int bundle_addr, int module_addr,
         return busy;
 }
 
-/* 1. Deassert rx_reset_core. */
-/* 2. Program TRICN_CNFG registers. */
-/* 3. Deassert rx_reset_link */
 static int tricn_init(adapter_t *adapter)
 {
-        int     i               = 0;
-        int     stat            = 0;
-        int     timeout         = 0;
-        int     is_ready        = 0;
+        int i, sme = 1;
 
-        /* 1 */
-        timeout=1000;
-        do {
-                stat = readl(adapter->regs + A_ESPI_RX_RESET);
-                is_ready = (stat & 0x4);
-                timeout--;
-                udelay(5);
-        } while (!is_ready || (timeout==0));
-        writel(0x2, adapter->regs + A_ESPI_RX_RESET);
-        if (timeout==0)
-        {
-                CH_ERR("ESPI : ERROR : Timeout tricn_init() \n");
-                t1_fatal_err(adapter);
+        if (!(readl(adapter->regs + A_ESPI_RX_RESET)  & F_RX_CLK_STATUS)) {
+                CH_ERR("%s: ESPI clock not ready\n", adapter->name);
+                return -1;
         }
 
-        /* 2 */
-        tricn_write(adapter, 0, 0, 0, TRICN_CNFG, 0x81);
-        tricn_write(adapter, 0, 1, 0, TRICN_CNFG, 0x81);
-        tricn_write(adapter, 0, 2, 0, TRICN_CNFG, 0x81);
-        for (i=1; i<= 8; i++) tricn_write(adapter, 0, 0, i, TRICN_CNFG, 0xf1);
-        for (i=1; i<= 2; i++) tricn_write(adapter, 0, 1, i, TRICN_CNFG, 0xf1);
-        for (i=1; i<= 3; i++) tricn_write(adapter, 0, 2, i, TRICN_CNFG, 0xe1);
-        for (i=4; i<= 4; i++) tricn_write(adapter, 0, 2, i, TRICN_CNFG, 0xf1);
-        for (i=5; i<= 5; i++) tricn_write(adapter, 0, 2, i, TRICN_CNFG, 0xe1);
-        for (i=6; i<= 6; i++) tricn_write(adapter, 0, 2, i, TRICN_CNFG, 0xf1);
-        for (i=7; i<= 7; i++) tricn_write(adapter, 0, 2, i, TRICN_CNFG, 0x80);
-        for (i=8; i<= 8; i++) tricn_write(adapter, 0, 2, i, TRICN_CNFG, 0xf1);
-
-        /* 3 */
-        writel(0x3, adapter->regs + A_ESPI_RX_RESET);
+        writel(F_ESPI_RX_CORE_RST, adapter->regs + A_ESPI_RX_RESET);
+
+        if (sme) {
+                tricn_write(adapter, 0, 0, 0, TRICN_CNFG, 0x81);
+                tricn_write(adapter, 0, 1, 0, TRICN_CNFG, 0x81);
+                tricn_write(adapter, 0, 2, 0, TRICN_CNFG, 0x81);
+        }
+        for (i = 1; i <= 8; i++)
+                tricn_write(adapter, 0, 0, i, TRICN_CNFG, 0xf1);
+        for (i = 1; i <= 2; i++)
+                tricn_write(adapter, 0, 1, i, TRICN_CNFG, 0xf1);
+        for (i = 1; i <= 3; i++)
+                tricn_write(adapter, 0, 2, i, TRICN_CNFG, 0xe1);
+        tricn_write(adapter, 0, 2, 4, TRICN_CNFG, 0xf1);
+        tricn_write(adapter, 0, 2, 5, TRICN_CNFG, 0xe1);
+        tricn_write(adapter, 0, 2, 6, TRICN_CNFG, 0xf1);
+        tricn_write(adapter, 0, 2, 7, TRICN_CNFG, 0x80);
+        tricn_write(adapter, 0, 2, 8, TRICN_CNFG, 0xf1);
+
+        writel(F_ESPI_RX_CORE_RST | F_ESPI_RX_LNK_RST,
+               adapter->regs + A_ESPI_RX_RESET);
 
         return 0;
 }
@@ -143,6 +133,7 @@ void t1_espi_intr_enable(struct peespi *espi)
 
 void t1_espi_intr_clear(struct peespi *espi)
 {
+        readl(espi->adapter->regs + A_ESPI_DIP2_ERR_COUNT);
         writel(0xffffffff, espi->adapter->regs + A_ESPI_INTR_STATUS);
         writel(F_PL_INTR_ESPI, espi->adapter->regs + A_PL_CAUSE);
 }
@@ -157,7 +148,6 @@ void t1_espi_intr_disable(struct peespi *espi)
 
 int t1_espi_intr_handler(struct peespi *espi)
 {
-        u32 cnt;
         u32 status = readl(espi->adapter->regs + A_ESPI_INTR_STATUS);
 
         if (status & F_DIP4ERR)
@@ -177,7 +167,7 @@ int t1_espi_intr_handler(struct peespi *espi)
                  * Must read the error count to clear the interrupt
                  * that it causes.
                  */
-                cnt = readl(espi->adapter->regs + A_ESPI_DIP2_ERR_COUNT);
+                readl(espi->adapter->regs + A_ESPI_DIP2_ERR_COUNT);
         }
 
         /*
@@ -210,17 +200,45 @@ static void espi_setup_for_pm3393(adapter_t *adapter)
         writel(V_RX_NPORTS(1) | V_TX_NPORTS(1), adapter->regs + A_PORT_CONFIG);
 }
 
-/* T2 Init part --  */
-/* 1. Set T_ESPI_MISCCTRL_ADDR */
-/* 2. Init ESPI registers. */
-/* 3. Init TriCN Hard Macro */
-int t1_espi_init(struct peespi *espi, int mac_type, int nports)
+static void espi_setup_for_vsc7321(adapter_t *adapter)
+{
+        writel(0x1f4, adapter->regs + A_ESPI_SCH_TOKEN0);
+        writel(0x1f401f4, adapter->regs + A_ESPI_SCH_TOKEN1);
+        writel(0x1f4, adapter->regs + A_ESPI_SCH_TOKEN2);
+        writel(0xa00, adapter->regs + A_ESPI_RX_FIFO_ALMOST_FULL_WATERMARK);
+        writel(0x1ff, adapter->regs + A_ESPI_RX_FIFO_ALMOST_EMPTY_WATERMARK);
+        writel(1, adapter->regs + A_ESPI_CALENDAR_LENGTH);
+        writel(V_RX_NPORTS(4) | V_TX_NPORTS(4), adapter->regs + A_PORT_CONFIG);
+
+        writel(0x08000008, adapter->regs + A_ESPI_TRAIN);
+}
+
+/*
+ * Note that T1B requires at least 2 ports for IXF1010 due to a HW bug.
+ */
+static void espi_setup_for_ixf1010(adapter_t *adapter, int nports)
 {
-        u32 cnt;
+        writel(1, adapter->regs + A_ESPI_CALENDAR_LENGTH);
+        if (nports == 4) {
+                if (is_T2(adapter)) {
+                        writel(0xf00, adapter->regs + A_ESPI_RX_FIFO_ALMOST_FULL_WATERMARK);
+                        writel(0x3c0, adapter->regs + A_ESPI_RX_FIFO_ALMOST_EMPTY_WATERMARK);
+                } else {
+                        writel(0x7ff, adapter->regs + A_ESPI_RX_FIFO_ALMOST_FULL_WATERMARK);
+                        writel(0x1ff, adapter->regs + A_ESPI_RX_FIFO_ALMOST_EMPTY_WATERMARK);
+                }
+        } else {
+                writel(0x1fff, adapter->regs + A_ESPI_RX_FIFO_ALMOST_FULL_WATERMARK);
+                writel(0x7ff, adapter->regs + A_ESPI_RX_FIFO_ALMOST_EMPTY_WATERMARK);
+        }
+        writel(V_RX_NPORTS(nports) | V_TX_NPORTS(nports), adapter->regs + A_PORT_CONFIG);
 
+}
+
+int t1_espi_init(struct peespi *espi, int mac_type, int nports)
+{
         u32 status_enable_extra = 0;
         adapter_t *adapter = espi->adapter;
-        u32 status, burstval = 0x800100;
 
         /* Disable ESPI training.  MACs that can handle it enable it below. */
         writel(0, adapter->regs + A_ESPI_TRAIN);
@@ -229,38 +247,20 @@ int t1_espi_init(struct peespi *espi, int mac_type, int nports)
                 writel(V_OUT_OF_SYNC_COUNT(4) |
                        V_DIP2_PARITY_ERR_THRES(3) |
                        V_DIP4_THRES(1), adapter->regs + A_ESPI_MISC_CONTROL);
-                if (nports == 4) {
-                        /* T204: maxburst1 = 0x40, maxburst2 = 0x20 */
-                        burstval = 0x200040;
-                }
-        }
-        writel(burstval, adapter->regs + A_ESPI_MAXBURST1_MAXBURST2);
+                writel(nports == 4 ? 0x200040 : 0x1000080,
+                       adapter->regs + A_ESPI_MAXBURST1_MAXBURST2);
+        } else
+                writel(0x800100, adapter->regs + A_ESPI_MAXBURST1_MAXBURST2);
 
-        switch (mac_type) {
-        case CHBT_MAC_PM3393:
+        if (mac_type == CHBT_MAC_PM3393)
                 espi_setup_for_pm3393(adapter);
-                break;
-        default:
+        else if (mac_type == CHBT_MAC_VSC7321)
+                espi_setup_for_vsc7321(adapter);
+        else if (mac_type == CHBT_MAC_IXF1010) {
+                status_enable_extra = F_INTEL1010MODE;
+                espi_setup_for_ixf1010(adapter, nports);
+        } else
                 return -1;
-        }
-
-        /*
-         * Make sure any pending interrupts from the SPI are
-         * Cleared before enabling the interrupt.
-         */
-        writel(ESPI_INTR_MASK, espi->adapter->regs + A_ESPI_INTR_ENABLE);
-        status = readl(espi->adapter->regs + A_ESPI_INTR_STATUS);
-        if (status & F_DIP2PARITYERR) {
-                cnt = readl(espi->adapter->regs + A_ESPI_DIP2_ERR_COUNT);
-        }
-
-        /*
-         * For T1B we need to write 1 to clear ESPI interrupts.  For T2+ we
-         * write the status as is.
-         */
-        if (status && t1_is_T1B(espi->adapter))
-                status = 1;
-        writel(status, espi->adapter->regs + A_ESPI_INTR_STATUS);
 
         writel(status_enable_extra | F_RXSTATUSENABLE,
                adapter->regs + A_ESPI_FIFO_STATUS_ENABLE);
@@ -271,9 +271,11 @@ int t1_espi_init(struct peespi *espi, int mac_type, int nports)
                  * Always position the control at the 1st port egress IN
                  * (sop,eop) counter to reduce PIOs for T/N210 workaround.
                  */
-                espi->misc_ctrl = (readl(adapter->regs + A_ESPI_MISC_CONTROL)
-                                   & ~MON_MASK) | (F_MONITORED_DIRECTION
-                                   | F_MONITORED_INTERFACE);
+                espi->misc_ctrl = readl(adapter->regs + A_ESPI_MISC_CONTROL);
+                espi->misc_ctrl &= ~MON_MASK;
+                espi->misc_ctrl |= F_MONITORED_DIRECTION;
+                if (adapter->params.nports == 1)
+                        espi->misc_ctrl |= F_MONITORED_INTERFACE;
                 writel(espi->misc_ctrl, adapter->regs + A_ESPI_MISC_CONTROL);
                 spin_lock_init(&espi->lock);
         }
@@ -299,8 +301,7 @@ void t1_espi_set_misc_ctrl(adapter_t *adapter, u32 val)
 {
         struct peespi *espi = adapter->espi;
 
-        if (!is_T2(adapter))
-                return;
+        if (!is_T2(adapter)) return;
         spin_lock(&espi->lock);
         espi->misc_ctrl = (val & ~MON_MASK) |
                           (espi->misc_ctrl & MON_MASK);
@@ -310,27 +311,61 @@ void t1_espi_set_misc_ctrl(adapter_t *adapter, u32 val)
 
 u32 t1_espi_get_mon(adapter_t *adapter, u32 addr, u8 wait)
 {
-        u32 sel;
-
         struct peespi *espi = adapter->espi;
+        u32 sel;
 
         if (!is_T2(adapter))
                 return 0;
+
         sel = V_MONITORED_PORT_NUM((addr & 0x3c) >> 2);
         if (!wait) {
                 if (!spin_trylock(&espi->lock))
                         return 0;
-        }
-        else
+        } else
                 spin_lock(&espi->lock);
+
         if ((sel != (espi->misc_ctrl & MON_MASK))) {
                 writel(((espi->misc_ctrl & ~MON_MASK) | sel),
                        adapter->regs + A_ESPI_MISC_CONTROL);
                 sel = readl(adapter->regs + A_ESPI_SCH_TOKEN3);
                 writel(espi->misc_ctrl, adapter->regs + A_ESPI_MISC_CONTROL);
-        }
-        else
+        } else
                 sel = readl(adapter->regs + A_ESPI_SCH_TOKEN3);
         spin_unlock(&espi->lock);
         return sel;
 }
+
+/*
+ * This function is for T204 only.
+ * compare with t1_espi_get_mon(), it reads espiInTxSop[0 ~ 3] in
+ * one shot, since there is no per port counter on the out side.
+ */
+int
+t1_espi_get_mon_t204(adapter_t *adapter, u32 *valp, u8 wait)
+{
+        struct peespi *espi = adapter->espi;
+        u8 i, nport = (u8)adapter->params.nports;
+
+        if (!wait) {
+                if (!spin_trylock(&espi->lock))
+                        return -1;
+        } else
+                spin_lock(&espi->lock);
+
+        if ( (espi->misc_ctrl & MON_MASK) != F_MONITORED_DIRECTION ) {
+                espi->misc_ctrl = (espi->misc_ctrl & ~MON_MASK) |
+                                        F_MONITORED_DIRECTION;
+                writel(espi->misc_ctrl, adapter->regs + A_ESPI_MISC_CONTROL);
+        }
+        for (i = 0 ; i < nport; i++, valp++) {
+                if (i) {
+                        writel(espi->misc_ctrl | V_MONITORED_PORT_NUM(i),
+                               adapter->regs + A_ESPI_MISC_CONTROL);
+                }
+                *valp = readl(adapter->regs + A_ESPI_SCH_TOKEN3);
+        }
+
+        writel(espi->misc_ctrl, adapter->regs + A_ESPI_MISC_CONTROL);
+        spin_unlock(&espi->lock);
+        return 0;
+}