sfc: Decouple NIC revision number from Falcon PCI revision number

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 31 insertions, 37 deletions

diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c
index b186fd2c9b6..7c9c9c93595 100644
--- a/drivers/net/sfc/falcon.c
+++ b/drivers/net/sfc/falcon.c
@@ -111,7 +111,7 @@ MODULE_PARM_DESC(rx_xon_thresh_bytes, "RX fifo XON threshold");
 #define FALCON_RX_FLUSH_COUNT 4
 
 #define FALCON_IS_DUAL_FUNC(efx)		\
-	(falcon_rev(efx) < FALCON_REV_B0)
+	(efx_nic_rev(efx) < EFX_REV_FALCON_B0)
 
 /**************************************************************************
  *
@@ -447,7 +447,7 @@ void falcon_init_tx(struct efx_tx_queue *tx_queue)
 			      FRF_AZ_TX_DESCQ_TYPE, 0,
 			      FRF_BZ_TX_NON_IP_DROP_DIS, 1);
 
-	if (falcon_rev(efx) >= FALCON_REV_B0) {
+	if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) {
 		int csum = tx_queue->queue == EFX_TX_QUEUE_OFFLOAD_CSUM;
 		EFX_SET_OWORD_FIELD(tx_desc_ptr, FRF_BZ_TX_IP_CHKSM_DIS, !csum);
 		EFX_SET_OWORD_FIELD(tx_desc_ptr, FRF_BZ_TX_TCP_CHKSM_DIS,
@@ -457,7 +457,7 @@ void falcon_init_tx(struct efx_tx_queue *tx_queue)
 	efx_writeo_table(efx, &tx_desc_ptr, efx->type->txd_ptr_tbl_base,
 			 tx_queue->queue);
 
-	if (falcon_rev(efx) < FALCON_REV_B0) {
+	if (efx_nic_rev(efx) < EFX_REV_FALCON_B0) {
 		efx_oword_t reg;
 
 		/* Only 128 bits in this register */
@@ -574,7 +574,7 @@ void falcon_init_rx(struct efx_rx_queue *rx_queue)
 {
 	efx_oword_t rx_desc_ptr;
 	struct efx_nic *efx = rx_queue->efx;
-	bool is_b0 = falcon_rev(efx) >= FALCON_REV_B0;
+	bool is_b0 = efx_nic_rev(efx) >= EFX_REV_FALCON_B0;
 	bool iscsi_digest_en = is_b0;
 
 	EFX_LOG(efx, "RX queue %d ring in special buffers %d-%d\n",
@@ -752,7 +752,7 @@ static void falcon_handle_rx_not_ok(struct efx_rx_queue *rx_queue,
 						   FSF_AZ_RX_EV_TCP_UDP_CHKSUM_ERR);
 	rx_ev_eth_crc_err = EFX_QWORD_FIELD(*event, FSF_AZ_RX_EV_ETH_CRC_ERR);
 	rx_ev_frm_trunc = EFX_QWORD_FIELD(*event, FSF_AZ_RX_EV_FRM_TRUNC);
-	rx_ev_drib_nib = ((falcon_rev(efx) >= FALCON_REV_B0) ?
+	rx_ev_drib_nib = ((efx_nic_rev(efx) >= EFX_REV_FALCON_B0) ?
 			  0 : EFX_QWORD_FIELD(*event, FSF_AA_RX_EV_DRIB_NIB));
 	rx_ev_pause_frm = EFX_QWORD_FIELD(*event, FSF_AZ_RX_EV_PAUSE_FRM_ERR);
 
@@ -897,13 +897,13 @@ static void falcon_handle_global_event(struct efx_channel *channel,
 		handled = true;
 	}
 
-	if ((falcon_rev(efx) >= FALCON_REV_B0) &&
+	if ((efx_nic_rev(efx) >= EFX_REV_FALCON_B0) &&
 	    EFX_QWORD_FIELD(*event, FSF_BB_GLB_EV_XG_MGT_INTR)) {
 		efx->xmac_poll_required = true;
 		handled = true;
 	}
 
-	if (falcon_rev(efx) <= FALCON_REV_A1 ?
+	if (efx_nic_rev(efx) <= EFX_REV_FALCON_A1 ?
 	    EFX_QWORD_FIELD(*event, FSF_AA_GLB_EV_RX_RECOVERY) :
 	    EFX_QWORD_FIELD(*event, FSF_BB_GLB_EV_RX_RECOVERY)) {
 		EFX_ERR(efx, "channel %d seen global RX_RESET "
@@ -1531,7 +1531,7 @@ static void falcon_setup_rss_indir_table(struct efx_nic *efx)
 	unsigned long offset;
 	efx_dword_t dword;
 
-	if (falcon_rev(efx) < FALCON_REV_B0)
+	if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
 		return;
 
 	for (offset = FR_BZ_RX_INDIRECTION_TBL;
@@ -1554,7 +1554,7 @@ int falcon_init_interrupt(struct efx_nic *efx)
 
 	if (!EFX_INT_MODE_USE_MSI(efx)) {
 		irq_handler_t handler;
-		if (falcon_rev(efx) >= FALCON_REV_B0)
+		if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0)
 			handler = falcon_legacy_interrupt_b0;
 		else
 			handler = falcon_legacy_interrupt_a1;
@@ -1601,7 +1601,7 @@ void falcon_fini_interrupt(struct efx_nic *efx)
 	}
 
 	/* ACK legacy interrupt */
-	if (falcon_rev(efx) >= FALCON_REV_B0)
+	if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0)
 		efx_reado(efx, &reg, FR_BZ_INT_ISR0);
 	else
 		falcon_irq_ack_a1(efx);
@@ -1841,7 +1841,7 @@ static int falcon_reset_macs(struct efx_nic *efx)
 	efx_oword_t reg;
 	int count;
 
-	if (falcon_rev(efx) < FALCON_REV_B0) {
+	if (efx_nic_rev(efx) < EFX_REV_FALCON_B0) {
 		/* It's not safe to use GLB_CTL_REG to reset the
 		 * macs, so instead use the internal MAC resets
 		 */
@@ -1917,7 +1917,7 @@ void falcon_drain_tx_fifo(struct efx_nic *efx)
 {
 	efx_oword_t reg;
 
-	if ((falcon_rev(efx) < FALCON_REV_B0) ||
+	if ((efx_nic_rev(efx) < EFX_REV_FALCON_B0) ||
 	    (efx->loopback_mode != LOOPBACK_NONE))
 		return;
 
@@ -1933,7 +1933,7 @@ void falcon_deconfigure_mac_wrapper(struct efx_nic *efx)
 {
 	efx_oword_t reg;
 
-	if (falcon_rev(efx) < FALCON_REV_B0)
+	if (efx_nic_rev(efx) < EFX_REV_FALCON_B0)
 		return;
 
 	/* Isolate the MAC -> RX */
@@ -1970,7 +1970,7 @@ void falcon_reconfigure_mac_wrapper(struct efx_nic *efx)
 			     FRF_AB_MAC_SPEED, link_speed);
 	/* On B0, MAC backpressure can be disabled and packets get
 	 * discarded. */
-	if (falcon_rev(efx) >= FALCON_REV_B0) {
+	if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) {
 		EFX_SET_OWORD_FIELD(reg, FRF_BB_TXFIFO_DRAIN_EN,
 				    !link_state->up);
 	}
@@ -1988,7 +1988,7 @@ void falcon_reconfigure_mac_wrapper(struct efx_nic *efx)
 	EFX_SET_OWORD_FIELD(reg, FRF_AZ_RX_XOFF_MAC_EN, tx_fc);
 
 	/* Unisolate the MAC -> RX */
-	if (falcon_rev(efx) >= FALCON_REV_B0)
+	if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0)
 		EFX_SET_OWORD_FIELD(reg, FRF_BZ_RX_INGR_EN, 1);
 	efx_writeo(efx, &reg, FR_AZ_RX_CFG);
 }
@@ -2207,7 +2207,7 @@ static void falcon_clock_mac(struct efx_nic *efx)
 	/* Configure the NIC generated MAC clock correctly */
 	efx_reado(efx, &nic_stat, FR_AB_NIC_STAT);
 	strap_val = EFX_IS10G(efx) ? 5 : 3;
-	if (falcon_rev(efx) >= FALCON_REV_B0) {
+	if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) {
 		EFX_SET_OWORD_FIELD(nic_stat, FRF_BB_EE_STRAP_EN, 1);
 		EFX_SET_OWORD_FIELD(nic_stat, FRF_BB_EE_STRAP, strap_val);
 		efx_writeo(efx, &nic_stat, FR_AB_NIC_STAT);
@@ -2296,7 +2296,7 @@ int falcon_probe_port(struct efx_nic *efx)
 	efx->link_state.fd = true;
 
 	/* Hardware flow ctrl. FalconA RX FIFO too small for pause generation */
-	if (falcon_rev(efx) >= FALCON_REV_B0)
+	if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0)
 		efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;
 	else
 		efx->wanted_fc = EFX_FC_RX;
@@ -2806,13 +2806,13 @@ static int falcon_probe_nic_variant(struct efx_nic *efx)
 
 	efx_reado(efx, &nic_stat, FR_AB_NIC_STAT);
 
-	switch (falcon_rev(efx)) {
-	case FALCON_REV_A0:
-	case 0xff:
-		EFX_ERR(efx, "Falcon rev A0 not supported\n");
-		return -ENODEV;
+	if (efx_nic_rev(efx) <= EFX_REV_FALCON_A1) {
+		u8 pci_rev = efx->pci_dev->revision;
 
-	case FALCON_REV_A1:
+		if ((pci_rev == 0xff) || (pci_rev == 0)) {
+			EFX_ERR(efx, "Falcon rev A0 not supported\n");
+			return -ENODEV;
+		}
 		if (EFX_OWORD_FIELD(nic_stat, FRF_AB_STRAP_10G) == 0) {
 			EFX_ERR(efx, "Falcon rev A1 1G not supported\n");
 			return -ENODEV;
@@ -2821,14 +2821,6 @@ static int falcon_probe_nic_variant(struct efx_nic *efx)
 			EFX_ERR(efx, "Falcon rev A1 PCI-X not supported\n");
 			return -ENODEV;
 		}
-		break;
-
-	case FALCON_REV_B0:
-		break;
-
-	default:
-		EFX_ERR(efx, "Unknown Falcon rev %d\n", falcon_rev(efx));
-		return -ENODEV;
 	}
 
 	return 0;
@@ -2991,7 +2983,7 @@ static void falcon_init_rx_cfg(struct efx_nic *efx)
 	efx_oword_t reg;
 
 	efx_reado(efx, &reg, FR_AZ_RX_CFG);
-	if (falcon_rev(efx) <= FALCON_REV_A1) {
+	if (efx_nic_rev(efx) <= EFX_REV_FALCON_A1) {
 		/* Data FIFO size is 5.5K */
 		if (data_xon_thr < 0)
 			data_xon_thr = 512 >> 8;
@@ -3037,7 +3029,7 @@ int falcon_init_nic(struct efx_nic *efx)
 	efx_writeo(efx, &temp, FR_AB_NIC_STAT);
 
 	/* Set the source of the GMAC clock */
-	if (falcon_rev(efx) == FALCON_REV_B0) {
+	if (efx_nic_rev(efx) == EFX_REV_FALCON_B0) {
 		efx_reado(efx, &temp, FR_AB_GPIO_CTL);
 		EFX_SET_OWORD_FIELD(temp, FRF_AB_USE_NIC_CLK, true);
 		efx_writeo(efx, &temp, FR_AB_GPIO_CTL);
@@ -3128,7 +3120,7 @@ int falcon_init_nic(struct efx_nic *efx)
 	/* Prefetch threshold 2 => fetch when descriptor cache half empty */
 	EFX_SET_OWORD_FIELD(temp, FRF_AZ_TX_PREF_THRESHOLD, 2);
 	/* Squash TX of packets of 16 bytes or less */
-	if (falcon_rev(efx) >= FALCON_REV_B0)
+	if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0)
 		EFX_SET_OWORD_FIELD(temp, FRF_BZ_TX_FLUSH_MIN_LEN_EN, 1);
 	efx_writeo(efx, &temp, FR_AZ_TX_RESERVED);
 
@@ -3142,7 +3134,7 @@ int falcon_init_nic(struct efx_nic *efx)
 	falcon_init_rx_cfg(efx);
 
 	/* Set destination of both TX and RX Flush events */
-	if (falcon_rev(efx) >= FALCON_REV_B0) {
+	if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) {
 		EFX_POPULATE_OWORD_1(temp, FRF_BZ_FLS_EVQ_ID, 0);
 		efx_writeo(efx, &temp, FR_BZ_DP_CTRL);
 	}
@@ -3242,9 +3234,10 @@ void falcon_stop_nic_stats(struct efx_nic *efx)
  **************************************************************************
  */
 
-struct efx_nic_type falcon_a_nic_type = {
+struct efx_nic_type falcon_a1_nic_type = {
 	.default_mac_ops = &falcon_xmac_operations,
 
+	.revision = EFX_REV_FALCON_A1,
 	.mem_map_size = 0x20000,
 	.txd_ptr_tbl_base = FR_AA_TX_DESC_PTR_TBL_KER,
 	.rxd_ptr_tbl_base = FR_AA_RX_DESC_PTR_TBL_KER,
@@ -3257,9 +3250,10 @@ struct efx_nic_type falcon_a_nic_type = {
 	.phys_addr_channels = 4,
 };
 
-struct efx_nic_type falcon_b_nic_type = {
+struct efx_nic_type falcon_b0_nic_type = {
 	.default_mac_ops = &falcon_xmac_operations,
 
+	.revision = EFX_REV_FALCON_B0,
 	/* Map everything up to and including the RSS indirection
 	 * table.  Don't map MSI-X table, MSI-X PBA since Linux
 	 * requires that they not be mapped.  */