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Diffstat (limited to 'drivers/net/chelsio/mac.c')
-rw-r--r--drivers/net/chelsio/mac.c368
1 files changed, 368 insertions, 0 deletions
diff --git a/drivers/net/chelsio/mac.c b/drivers/net/chelsio/mac.c
new file mode 100644
index 000000000000..6af39dc70459
--- /dev/null
+++ b/drivers/net/chelsio/mac.c
@@ -0,0 +1,368 @@
+/* $Date: 2005/10/22 00:42:59 $ $RCSfile: mac.c,v $ $Revision: 1.32 $ */
+#include "gmac.h"
+#include "regs.h"
+#include "fpga_defs.h"
+
+#define MAC_CSR_INTERFACE_GMII 0x0
+#define MAC_CSR_INTERFACE_TBI 0x1
+#define MAC_CSR_INTERFACE_MII 0x2
+#define MAC_CSR_INTERFACE_RMII 0x3
+
+/* Chelsio's MAC statistics. */
+struct mac_statistics {
+
+ /* Transmit */
+ u32 TxFramesTransmittedOK;
+ u32 TxReserved1;
+ u32 TxReserved2;
+ u32 TxOctetsTransmittedOK;
+ u32 TxFramesWithDeferredXmissions;
+ u32 TxLateCollisions;
+ u32 TxFramesAbortedDueToXSCollisions;
+ u32 TxFramesLostDueToIntMACXmitError;
+ u32 TxReserved3;
+ u32 TxMulticastFrameXmittedOK;
+ u32 TxBroadcastFramesXmittedOK;
+ u32 TxFramesWithExcessiveDeferral;
+ u32 TxPAUSEMACCtrlFramesTransmitted;
+
+ /* Receive */
+ u32 RxFramesReceivedOK;
+ u32 RxFrameCheckSequenceErrors;
+ u32 RxAlignmentErrors;
+ u32 RxOctetsReceivedOK;
+ u32 RxFramesLostDueToIntMACRcvError;
+ u32 RxMulticastFramesReceivedOK;
+ u32 RxBroadcastFramesReceivedOK;
+ u32 RxInRangeLengthErrors;
+ u32 RxTxOutOfRangeLengthField;
+ u32 RxFrameTooLongErrors;
+ u32 RxPAUSEMACCtrlFramesReceived;
+};
+
+static int static_aPorts[] = {
+ FPGA_GMAC_INTERRUPT_PORT0,
+ FPGA_GMAC_INTERRUPT_PORT1,
+ FPGA_GMAC_INTERRUPT_PORT2,
+ FPGA_GMAC_INTERRUPT_PORT3
+};
+
+struct _cmac_instance {
+ u32 index;
+};
+
+static int mac_intr_enable(struct cmac *mac)
+{
+ u32 mac_intr;
+
+ if (t1_is_asic(mac->adapter)) {
+ /* ASIC */
+
+ /* We don't use the on chip MAC for ASIC products. */
+ } else {
+ /* FPGA */
+
+ /* Set parent gmac interrupt. */
+ mac_intr = readl(mac->adapter->regs + A_PL_ENABLE);
+ mac_intr |= FPGA_PCIX_INTERRUPT_GMAC;
+ writel(mac_intr, mac->adapter->regs + A_PL_ENABLE);
+
+ mac_intr = readl(mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_ENABLE);
+ mac_intr |= static_aPorts[mac->instance->index];
+ writel(mac_intr,
+ mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_ENABLE);
+ }
+
+ return 0;
+}
+
+static int mac_intr_disable(struct cmac *mac)
+{
+ u32 mac_intr;
+
+ if (t1_is_asic(mac->adapter)) {
+ /* ASIC */
+
+ /* We don't use the on chip MAC for ASIC products. */
+ } else {
+ /* FPGA */
+
+ /* Set parent gmac interrupt. */
+ mac_intr = readl(mac->adapter->regs + A_PL_ENABLE);
+ mac_intr &= ~FPGA_PCIX_INTERRUPT_GMAC;
+ writel(mac_intr, mac->adapter->regs + A_PL_ENABLE);
+
+ mac_intr = readl(mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_ENABLE);
+ mac_intr &= ~(static_aPorts[mac->instance->index]);
+ writel(mac_intr,
+ mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_ENABLE);
+ }
+
+ return 0;
+}
+
+static int mac_intr_clear(struct cmac *mac)
+{
+ u32 mac_intr;
+
+ if (t1_is_asic(mac->adapter)) {
+ /* ASIC */
+
+ /* We don't use the on chip MAC for ASIC products. */
+ } else {
+ /* FPGA */
+
+ /* Set parent gmac interrupt. */
+ writel(FPGA_PCIX_INTERRUPT_GMAC,
+ mac->adapter->regs + A_PL_CAUSE);
+ mac_intr = readl(mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_CAUSE);
+ mac_intr |= (static_aPorts[mac->instance->index]);
+ writel(mac_intr,
+ mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_CAUSE);
+ }
+
+ return 0;
+}
+
+static int mac_get_address(struct cmac *mac, u8 addr[6])
+{
+ u32 data32_lo, data32_hi;
+
+ data32_lo = readl(mac->adapter->regs
+ + MAC_REG_IDLO(mac->instance->index));
+ data32_hi = readl(mac->adapter->regs
+ + MAC_REG_IDHI(mac->instance->index));
+
+ addr[0] = (u8) ((data32_hi >> 8) & 0xFF);
+ addr[1] = (u8) ((data32_hi) & 0xFF);
+ addr[2] = (u8) ((data32_lo >> 24) & 0xFF);
+ addr[3] = (u8) ((data32_lo >> 16) & 0xFF);
+ addr[4] = (u8) ((data32_lo >> 8) & 0xFF);
+ addr[5] = (u8) ((data32_lo) & 0xFF);
+ return 0;
+}
+
+static int mac_reset(struct cmac *mac)
+{
+ u32 data32;
+ int mac_in_reset, time_out = 100;
+ int idx = mac->instance->index;
+
+ data32 = readl(mac->adapter->regs + MAC_REG_CSR(idx));
+ writel(data32 | F_MAC_RESET,
+ mac->adapter->regs + MAC_REG_CSR(idx));
+
+ do {
+ data32 = readl(mac->adapter->regs + MAC_REG_CSR(idx));
+
+ mac_in_reset = data32 & F_MAC_RESET;
+ if (mac_in_reset)
+ udelay(1);
+ } while (mac_in_reset && --time_out);
+
+ if (mac_in_reset) {
+ CH_ERR("%s: MAC %d reset timed out\n",
+ mac->adapter->name, idx);
+ return 2;
+ }
+
+ return 0;
+}
+
+static int mac_set_rx_mode(struct cmac *mac, struct t1_rx_mode *rm)
+{
+ u32 val;
+
+ val = readl(mac->adapter->regs
+ + MAC_REG_CSR(mac->instance->index));
+ val &= ~(F_MAC_PROMISC | F_MAC_MC_ENABLE);
+ val |= V_MAC_PROMISC(t1_rx_mode_promisc(rm) != 0);
+ val |= V_MAC_MC_ENABLE(t1_rx_mode_allmulti(rm) != 0);
+ writel(val,
+ mac->adapter->regs + MAC_REG_CSR(mac->instance->index));
+
+ return 0;
+}
+
+static int mac_set_speed_duplex_fc(struct cmac *mac, int speed, int duplex,
+ int fc)
+{
+ u32 data32;
+
+ data32 = readl(mac->adapter->regs
+ + MAC_REG_CSR(mac->instance->index));
+ data32 &= ~(F_MAC_HALF_DUPLEX | V_MAC_SPEED(M_MAC_SPEED) |
+ V_INTERFACE(M_INTERFACE) | F_MAC_TX_PAUSE_ENABLE |
+ F_MAC_RX_PAUSE_ENABLE);
+
+ switch (speed) {
+ case SPEED_10:
+ case SPEED_100:
+ data32 |= V_INTERFACE(MAC_CSR_INTERFACE_MII);
+ data32 |= V_MAC_SPEED(speed == SPEED_10 ? 0 : 1);
+ break;
+ case SPEED_1000:
+ data32 |= V_INTERFACE(MAC_CSR_INTERFACE_GMII);
+ data32 |= V_MAC_SPEED(2);
+ break;
+ }
+
+ if (duplex >= 0)
+ data32 |= V_MAC_HALF_DUPLEX(duplex == DUPLEX_HALF);
+
+ if (fc >= 0) {
+ data32 |= V_MAC_RX_PAUSE_ENABLE((fc & PAUSE_RX) != 0);
+ data32 |= V_MAC_TX_PAUSE_ENABLE((fc & PAUSE_TX) != 0);
+ }
+
+ writel(data32,
+ mac->adapter->regs + MAC_REG_CSR(mac->instance->index));
+ return 0;
+}
+
+static int mac_enable(struct cmac *mac, int which)
+{
+ u32 val;
+
+ val = readl(mac->adapter->regs
+ + MAC_REG_CSR(mac->instance->index));
+ if (which & MAC_DIRECTION_RX)
+ val |= F_MAC_RX_ENABLE;
+ if (which & MAC_DIRECTION_TX)
+ val |= F_MAC_TX_ENABLE;
+ writel(val,
+ mac->adapter->regs + MAC_REG_CSR(mac->instance->index));
+ return 0;
+}
+
+static int mac_disable(struct cmac *mac, int which)
+{
+ u32 val;
+
+ val = readl(mac->adapter->regs
+ + MAC_REG_CSR(mac->instance->index));
+ if (which & MAC_DIRECTION_RX)
+ val &= ~F_MAC_RX_ENABLE;
+ if (which & MAC_DIRECTION_TX)
+ val &= ~F_MAC_TX_ENABLE;
+ writel(val,
+ mac->adapter->regs + MAC_REG_CSR(mac->instance->index));
+ return 0;
+}
+
+#if 0
+static int mac_set_ifs(struct cmac *mac, u32 mode)
+{
+ t1_write_reg_4(mac->adapter,
+ MAC_REG_IFS(mac->instance->index),
+ mode);
+ return 0;
+}
+
+static int mac_enable_isl(struct cmac *mac)
+{
+ u32 data32 = readl(mac->adapter->regs
+ + MAC_REG_CSR(mac->instance->index));
+ data32 |= F_MAC_RX_ENABLE | F_MAC_TX_ENABLE;
+ t1_write_reg_4(mac->adapter,
+ MAC_REG_CSR(mac->instance->index),
+ data32);
+ return 0;
+}
+#endif
+
+static int mac_set_mtu(struct cmac *mac, int mtu)
+{
+ if (mtu > 9600)
+ return -EINVAL;
+ writel(mtu + ETH_HLEN + VLAN_HLEN,
+ mac->adapter->regs + MAC_REG_LARGEFRAMELENGTH(mac->instance->index));
+
+ return 0;
+}
+
+static const struct cmac_statistics *mac_update_statistics(struct cmac *mac,
+ int flag)
+{
+ struct mac_statistics st;
+ u32 *p = (u32 *) & st, i;
+
+ writel(0,
+ mac->adapter->regs + MAC_REG_RMCNT(mac->instance->index));
+
+ for (i = 0; i < sizeof(st) / sizeof(u32); i++)
+ *p++ = readl(mac->adapter->regs
+ + MAC_REG_RMDATA(mac->instance->index));
+
+ /* XXX convert stats */
+ return &mac->stats;
+}
+
+static void mac_destroy(struct cmac *mac)
+{
+ kfree(mac);
+}
+
+static struct cmac_ops chelsio_mac_ops = {
+ .destroy = mac_destroy,
+ .reset = mac_reset,
+ .interrupt_enable = mac_intr_enable,
+ .interrupt_disable = mac_intr_disable,
+ .interrupt_clear = mac_intr_clear,
+ .enable = mac_enable,
+ .disable = mac_disable,
+ .set_mtu = mac_set_mtu,
+ .set_rx_mode = mac_set_rx_mode,
+ .set_speed_duplex_fc = mac_set_speed_duplex_fc,
+ .macaddress_get = mac_get_address,
+ .statistics_update = mac_update_statistics,
+};
+
+static struct cmac *mac_create(adapter_t *adapter, int index)
+{
+ struct cmac *mac;
+ u32 data32;
+
+ if (index >= 4)
+ return NULL;
+
+ mac = kzalloc(sizeof(*mac) + sizeof(cmac_instance), GFP_KERNEL);
+ if (!mac)
+ return NULL;
+
+ mac->ops = &chelsio_mac_ops;
+ mac->instance = (cmac_instance *) (mac + 1);
+
+ mac->instance->index = index;
+ mac->adapter = adapter;
+
+ data32 = readl(adapter->regs + MAC_REG_CSR(mac->instance->index));
+ data32 &= ~(F_MAC_RESET | F_MAC_PROMISC | F_MAC_PROMISC |
+ F_MAC_LB_ENABLE | F_MAC_RX_ENABLE | F_MAC_TX_ENABLE);
+ data32 |= F_MAC_JUMBO_ENABLE;
+ writel(data32, adapter->regs + MAC_REG_CSR(mac->instance->index));
+
+ /* Initialize the random backoff seed. */
+ data32 = 0x55aa + (3 * index);
+ writel(data32,
+ adapter->regs + MAC_REG_GMRANDBACKOFFSEED(mac->instance->index));
+
+ /* Check to see if the mac address needs to be set manually. */
+ data32 = readl(adapter->regs + MAC_REG_IDLO(mac->instance->index));
+ if (data32 == 0 || data32 == 0xffffffff) {
+ /*
+ * Add a default MAC address if we can't read one.
+ */
+ writel(0x43FFFFFF - index,
+ adapter->regs + MAC_REG_IDLO(mac->instance->index));
+ writel(0x0007,
+ adapter->regs + MAC_REG_IDHI(mac->instance->index));
+ }
+
+ (void) mac_set_mtu(mac, 1500);
+ return mac;
+}
+
+struct gmac t1_chelsio_mac_ops = {
+ .create = mac_create
+};
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.