New upstream version 18.08upstream/18.08

Change-Id: I32fdf5e5016556d9c0a6d88ddaf1fc468961790a
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>

1 files changed, 9 insertions, 163 deletions

diff --git a/drivers/net/sfc/base/hunt_nic.c b/drivers/net/sfc/base/hunt_nic.c
index d03cc138..16ea81d2 100644
--- a/drivers/net/sfc/base/hunt_nic.c
+++ b/drivers/net/sfc/base/hunt_nic.c
@@ -36,7 +36,7 @@ hunt_nic_get_required_pcie_bandwidth(
 		goto out;
 	}
 
-	if (port_modes & (1 << TLV_PORT_MODE_40G_40G)) {
+	if (port_modes & (1U << TLV_PORT_MODE_40G_40G)) {
 		/*
 		 * This needs the full PCIe bandwidth (and could use
 		 * more) - roughly 64 Gbit/s for 8 lanes of Gen3.
@@ -45,9 +45,9 @@ hunt_nic_get_required_pcie_bandwidth(
 			    EFX_PCIE_LINK_SPEED_GEN3, &bandwidth)) != 0)
 			goto fail1;
 	} else {
-		if (port_modes & (1 << TLV_PORT_MODE_40G)) {
+		if (port_modes & (1U << TLV_PORT_MODE_40G)) {
 			max_port_mode = TLV_PORT_MODE_40G;
-		} else if (port_modes & (1 << TLV_PORT_MODE_10G_10G_10G_10G)) {
+		} else if (port_modes & (1U << TLV_PORT_MODE_10G_10G_10G_10G)) {
 			max_port_mode = TLV_PORT_MODE_10G_10G_10G_10G;
 		} else {
 			/* Assume two 10G ports */
@@ -76,90 +76,13 @@ fail1:
 hunt_board_cfg(
 	__in		efx_nic_t *enp)
 {
-	efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
 	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
-	uint8_t mac_addr[6] = { 0 };
-	uint32_t board_type = 0;
-	ef10_link_state_t els;
 	efx_port_t *epp = &(enp->en_port);
-	uint32_t port;
-	uint32_t pf;
-	uint32_t vf;
-	uint32_t mask;
 	uint32_t flags;
 	uint32_t sysclk, dpcpu_clk;
-	uint32_t base, nvec;
 	uint32_t bandwidth;
 	efx_rc_t rc;
 
-	if ((rc = efx_mcdi_get_port_assignment(enp, &port)) != 0)
-		goto fail1;
-
-	/*
-	 * NOTE: The MCDI protocol numbers ports from zero.
-	 * The common code MCDI interface numbers ports from one.
-	 */
-	emip->emi_port = port + 1;
-
-	if ((rc = ef10_external_port_mapping(enp, port,
-		    &encp->enc_external_port)) != 0)
-		goto fail2;
-
-	/*
-	 * Get PCIe function number from firmware (used for
-	 * per-function privilege and dynamic config info).
-	 *  - PCIe PF: pf = PF number, vf = 0xffff.
-	 *  - PCIe VF: pf = parent PF, vf = VF number.
-	 */
-	if ((rc = efx_mcdi_get_function_info(enp, &pf, &vf)) != 0)
-		goto fail3;
-
-	encp->enc_pf = pf;
-	encp->enc_vf = vf;
-
-	/* MAC address for this function */
-	if (EFX_PCI_FUNCTION_IS_PF(encp)) {
-		rc = efx_mcdi_get_mac_address_pf(enp, mac_addr);
-		if ((rc == 0) && (mac_addr[0] & 0x02)) {
-			/*
-			 * If the static config does not include a global MAC
-			 * address pool then the board may return a locally
-			 * administered MAC address (this should only happen on
-			 * incorrectly programmed boards).
-			 */
-			rc = EINVAL;
-		}
-	} else {
-		rc = efx_mcdi_get_mac_address_vf(enp, mac_addr);
-	}
-	if (rc != 0)
-		goto fail4;
-
-	EFX_MAC_ADDR_COPY(encp->enc_mac_addr, mac_addr);
-
-	/* Board configuration */
-	rc = efx_mcdi_get_board_cfg(enp, &board_type, NULL, NULL);
-	if (rc != 0) {
-		/* Unprivileged functions may not be able to read board cfg */
-		if (rc == EACCES)
-			board_type = 0;
-		else
-			goto fail5;
-	}
-
-	encp->enc_board_type = board_type;
-	encp->enc_clk_mult = 1; /* not used for Huntington */
-
-	/* Fill out fields in enp->en_port and enp->en_nic_cfg from MCDI */
-	if ((rc = efx_mcdi_get_phy_cfg(enp)) != 0)
-		goto fail6;
-
-	/* Obtain the default PHY advertised capabilities */
-	if ((rc = ef10_phy_get_link(enp, &els)) != 0)
-		goto fail7;
-	epp->ep_default_adv_cap_mask = els.els_adv_cap_mask;
-	epp->ep_adv_cap_mask = els.els_adv_cap_mask;
-
 	/*
 	 * Enable firmware workarounds for hardware errata.
 	 * Expected responses are:
@@ -187,7 +110,7 @@ hunt_board_cfg(
 	else if ((rc == ENOTSUP) || (rc == ENOENT))
 		encp->enc_bug35388_workaround = B_FALSE;
 	else
-		goto fail8;
+		goto fail1;
 
 	/*
 	 * If the bug41750 workaround is enabled, then do not test interrupts,
@@ -206,7 +129,7 @@ hunt_board_cfg(
 	} else if ((rc == ENOTSUP) || (rc == ENOENT)) {
 		encp->enc_bug41750_workaround = B_FALSE;
 	} else {
-		goto fail9;
+		goto fail2;
 	}
 	if (EFX_PCI_FUNCTION_IS_VF(encp)) {
 		/* Interrupt testing does not work for VFs. See bug50084. */
@@ -244,12 +167,12 @@ hunt_board_cfg(
 	} else if ((rc == ENOTSUP) || (rc == ENOENT)) {
 		encp->enc_bug26807_workaround = B_FALSE;
 	} else {
-		goto fail10;
+		goto fail3;
 	}
 
 	/* Get clock frequencies (in MHz). */
 	if ((rc = efx_mcdi_get_clock(enp, &sysclk, &dpcpu_clk)) != 0)
-		goto fail11;
+		goto fail4;
 
 	/*
 	 * The Huntington timer quantum is 1536 sysclk cycles, documented for
@@ -266,80 +189,23 @@ hunt_board_cfg(
 
 	encp->enc_bug61265_workaround = B_FALSE; /* Medford only */
 
-	/* Check capabilities of running datapath firmware */
-	if ((rc = ef10_get_datapath_caps(enp)) != 0)
-		goto fail12;
-
 	/* Alignment for receive packet DMA buffers */
 	encp->enc_rx_buf_align_start = 1;
 	encp->enc_rx_buf_align_end = 64; /* RX DMA end padding */
 
-	/* Alignment for WPTR updates */
-	encp->enc_rx_push_align = EF10_RX_WPTR_ALIGN;
-
-	/*
-	 * Maximum number of exclusive RSS contexts which can be allocated. The
-	 * hardware supports 64, but 6 are reserved for shared contexts. They
-	 * are a global resource so not all may be available.
-	 */
-	encp->enc_rx_scale_max_exclusive_contexts = 58;
-
-	encp->enc_tx_dma_desc_size_max = EFX_MASK32(ESF_DZ_RX_KER_BYTE_CNT);
-	/* No boundary crossing limits */
-	encp->enc_tx_dma_desc_boundary = 0;
-
-	/*
-	 * Set resource limits for MC_CMD_ALLOC_VIS. Note that we cannot use
-	 * MC_CMD_GET_RESOURCE_LIMITS here as that reports the available
-	 * resources (allocated to this PCIe function), which is zero until
-	 * after we have allocated VIs.
-	 */
-	encp->enc_evq_limit = 1024;
-	encp->enc_rxq_limit = EFX_RXQ_LIMIT_TARGET;
-	encp->enc_txq_limit = EFX_TXQ_LIMIT_TARGET;
-
 	/*
 	 * The workaround for bug35388 uses the top bit of transmit queue
 	 * descriptor writes, preventing the use of 4096 descriptor TXQs.
 	 */
 	encp->enc_txq_max_ndescs = encp->enc_bug35388_workaround ? 2048 : 4096;
 
-	encp->enc_buftbl_limit = 0xFFFFFFFF;
-
+	EFX_STATIC_ASSERT(HUNT_PIOBUF_NBUFS <= EF10_MAX_PIOBUF_NBUFS);
 	encp->enc_piobuf_limit = HUNT_PIOBUF_NBUFS;
 	encp->enc_piobuf_size = HUNT_PIOBUF_SIZE;
 	encp->enc_piobuf_min_alloc_size = HUNT_MIN_PIO_ALLOC_SIZE;
 
-	/*
-	 * Get the current privilege mask. Note that this may be modified
-	 * dynamically, so this value is informational only. DO NOT use
-	 * the privilege mask to check for sufficient privileges, as that
-	 * can result in time-of-check/time-of-use bugs.
-	 */
-	if ((rc = ef10_get_privilege_mask(enp, &mask)) != 0)
-		goto fail13;
-	encp->enc_privilege_mask = mask;
-
-	/* Get interrupt vector limits */
-	if ((rc = efx_mcdi_get_vector_cfg(enp, &base, &nvec, NULL)) != 0) {
-		if (EFX_PCI_FUNCTION_IS_PF(encp))
-			goto fail14;
-
-		/* Ignore error (cannot query vector limits from a VF). */
-		base = 0;
-		nvec = 1024;
-	}
-	encp->enc_intr_vec_base = base;
-	encp->enc_intr_limit = nvec;
-
-	/*
-	 * Maximum number of bytes into the frame the TCP header can start for
-	 * firmware assisted TSO to work.
-	 */
-	encp->enc_tx_tso_tcp_header_offset_limit = EF10_TCP_HEADER_OFFSET_LIMIT;
-
 	if ((rc = hunt_nic_get_required_pcie_bandwidth(enp, &bandwidth)) != 0)
-		goto fail15;
+		goto fail5;
 	encp->enc_required_pcie_bandwidth_mbps = bandwidth;
 
 	/* All Huntington devices have a PCIe Gen3, 8 lane connector */
@@ -347,26 +213,6 @@ hunt_board_cfg(
 
 	return (0);
 
-fail15:
-	EFSYS_PROBE(fail15);
-fail14:
-	EFSYS_PROBE(fail14);
-fail13:
-	EFSYS_PROBE(fail13);
-fail12:
-	EFSYS_PROBE(fail12);
-fail11:
-	EFSYS_PROBE(fail11);
-fail10:
-	EFSYS_PROBE(fail10);
-fail9:
-	EFSYS_PROBE(fail9);
-fail8:
-	EFSYS_PROBE(fail8);
-fail7:
-	EFSYS_PROBE(fail7);
-fail6:
-	EFSYS_PROBE(fail6);
 fail5:
 	EFSYS_PROBE(fail5);
 fail4: