* [PATCH net-next v10 3/4] netdev: octeon-ethernet: Add Cavium Octeon III support.
2018-05-07 17:22 [PATCH net-next v10 0/4] netdev: octeon-ethernet: Add Cavium Octeon III support Steven J. Hill
2018-05-07 17:22 ` [PATCH net-next v10 1/4] staging: octeon: Remove USE_ASYNC_IOBDMA macro Steven J. Hill
2018-05-07 17:22 ` [PATCH net-next v10 2/4] dt-bindings: Add Cavium Octeon Common Ethernet Interface Steven J. Hill
@ 2018-05-07 17:22 ` Steven J. Hill
2018-05-09 2:28 ` David Miller
2018-05-07 17:22 ` [PATCH net-next v10 4/4] MAINTAINERS: Add entry for drivers/net/ethernet/cavium/octeon/octeon3-* Steven J. Hill
3 siblings, 1 reply; 7+ messages in thread
From: Steven J. Hill @ 2018-05-07 17:22 UTC (permalink / raw)
To: netdev; +Cc: Carlos Munoz, Steven J. Hill, David Daney
From: Carlos Munoz <cmunoz@cavium.com>
The Cavium OCTEON cn78xx and cn73xx SoCs have network packet I/O
hardware that is significantly different from previous generations of
the family.
Add a new driver for this hardware. The Ethernet MAC is called BGX on
these devices. Common code for the MAC is in octeon3-bgx-port.c.
Four of these BGX MACs are grouped together and managed as a group by
octeon3-bgx-nexus.c. Ingress packet classification is done by the PKI
unit initialized in octeon3-pki.c. Queue management is done in the
SSO, initialized by octeon3-sso.c. Egress is handled by the PKO,
initialized in octeon3-pko.c.
Hardware memory buffer management is done in octeon3-fpa.c
Signed-off-by: Carlos Munoz <cmunoz@cavium.com>
Signed-off-by: Steven J. Hill <Steven.Hill@cavium.com>
Signed-off-by: David Daney <david.daney@cavium.com>
---
drivers/net/ethernet/cavium/Kconfig | 59 +-
drivers/net/ethernet/cavium/octeon/Makefile | 7 +
.../net/ethernet/cavium/octeon/octeon3-bgx-nexus.c | 417 ++++
.../net/ethernet/cavium/octeon/octeon3-bgx-port.c | 2003 +++++++++++++++++++
drivers/net/ethernet/cavium/octeon/octeon3-core.c | 2079 ++++++++++++++++++++
drivers/net/ethernet/cavium/octeon/octeon3-fpa.c | 358 ++++
drivers/net/ethernet/cavium/octeon/octeon3-pki.c | 823 ++++++++
drivers/net/ethernet/cavium/octeon/octeon3-pko.c | 1688 ++++++++++++++++
drivers/net/ethernet/cavium/octeon/octeon3-sso.c | 301 +++
drivers/net/ethernet/cavium/octeon/octeon3.h | 430 ++++
10 files changed, 8155 insertions(+), 10 deletions(-)
create mode 100644 drivers/net/ethernet/cavium/octeon/octeon3-bgx-nexus.c
create mode 100644 drivers/net/ethernet/cavium/octeon/octeon3-bgx-port.c
create mode 100644 drivers/net/ethernet/cavium/octeon/octeon3-core.c
create mode 100644 drivers/net/ethernet/cavium/octeon/octeon3-fpa.c
create mode 100644 drivers/net/ethernet/cavium/octeon/octeon3-pki.c
create mode 100644 drivers/net/ethernet/cavium/octeon/octeon3-pko.c
create mode 100644 drivers/net/ethernet/cavium/octeon/octeon3-sso.c
create mode 100644 drivers/net/ethernet/cavium/octeon/octeon3.h
diff --git a/drivers/net/ethernet/cavium/Kconfig b/drivers/net/ethernet/cavium/Kconfig
index 043e3c1..3ec4384 100644
--- a/drivers/net/ethernet/cavium/Kconfig
+++ b/drivers/net/ethernet/cavium/Kconfig
@@ -4,7 +4,7 @@
config NET_VENDOR_CAVIUM
bool "Cavium ethernet drivers"
- depends on PCI
+ depends on PCI || CAVIUM_OCTEON_SOC
default y
---help---
Select this option if you want enable Cavium network support.
@@ -13,6 +13,12 @@ config NET_VENDOR_CAVIUM
if NET_VENDOR_CAVIUM
+#
+# The Thunder* and LiquidIO drivers require PCI.
+#
+
+if PCI
+
config THUNDER_NIC_PF
tristate "Thunder Physical function driver"
depends on 64BIT
@@ -77,6 +83,20 @@ config LIQUIDIO
To compile this driver as a module, choose M here: the module
will be called liquidio. This is recommended.
+config LIQUIDIO_VF
+ tristate "Cavium LiquidIO VF support"
+ depends on 64BIT && PCI_MSI
+ imply PTP_1588_CLOCK
+ ---help---
+ This driver supports Cavium LiquidIO Intelligent Server Adapter
+ based on CN23XX chips.
+
+ To compile this driver as a module, choose M here: The module
+ will be called liquidio_vf. MSI-X interrupt support is required
+ for this driver to work correctly
+
+endif # PCI
+
config OCTEON_MGMT_ETHERNET
tristate "Octeon Management port ethernet driver (CN5XXX, CN6XXX)"
depends on CAVIUM_OCTEON_SOC
@@ -88,16 +108,35 @@ config OCTEON_MGMT_ETHERNET
port on Cavium Networks' Octeon CN57XX, CN56XX, CN55XX,
CN54XX, CN52XX, and CN6XXX chips.
-config LIQUIDIO_VF
- tristate "Cavium LiquidIO VF support"
- depends on 64BIT && PCI_MSI
- imply PTP_1588_CLOCK
+config OCTEON_FPA3
+ tristate
+ depends on CAVIUM_OCTEON_SOC
+
+config OCTEON3_BGX_NEXUS
+ tristate
+ depends on CAVIUM_OCTEON_SOC
+
+config OCTEON3_BGX_PORT
+ tristate "Cavium OCTEON-III BGX port support"
+ depends on CAVIUM_OCTEON_SOC
+ select OCTEON3_BGX_NEXUS
---help---
- This driver supports Cavium LiquidIO Intelligent Server Adapter
- based on CN23XX chips.
+ Enable the driver for Cavium Octeon III BGX ports. BGX ports
+ support sgmii, rgmii, xaui, rxaui, xlaui, xfi, 10KR and 40KR modes.
- To compile this driver as a module, choose M here: The module
- will be called liquidio_vf. MSI-X interrupt support is required
- for this driver to work correctly
+ Say Y for support of any Octeon III SoC Ethernet port.
+
+config OCTEON3_ETHERNET
+ tristate "Cavium OCTEON-III PKI/PKO Ethernet support"
+ depends on CAVIUM_OCTEON_SOC
+ select OCTEON_BGX_PORT
+ select OCTEON_FPA3
+ select FW_LOADER
+ ---help---
+ Enable the driver for Cavium Octeon III Ethernet via PKI/PKO
+ units. No support for cn70xx chips (use OCTEON_ETHERNET for
+ cn70xx).
+
+ Say Y for support of any Octeon III SoC Ethernet port.
endif # NET_VENDOR_CAVIUM
diff --git a/drivers/net/ethernet/cavium/octeon/Makefile b/drivers/net/ethernet/cavium/octeon/Makefile
index efa41c1..13efb90 100644
--- a/drivers/net/ethernet/cavium/octeon/Makefile
+++ b/drivers/net/ethernet/cavium/octeon/Makefile
@@ -3,3 +3,10 @@
#
obj-$(CONFIG_OCTEON_MGMT_ETHERNET) += octeon_mgmt.o
+obj-$(CONFIG_OCTEON3_BGX_PORT) += octeon3-bgx-port.o
+obj-$(CONFIG_OCTEON3_BGX_NEXUS) += octeon3-bgx-nexus.o
+obj-$(CONFIG_OCTEON_FPA3) += octeon3-fpa.o
+obj-$(CONFIG_OCTEON3_ETHERNET) += octeon3-ethernet.o
+
+octeon3-ethernet-objs += octeon3-core.o octeon3-pki.o octeon3-sso.o \
+ octeon3-pko.o
diff --git a/drivers/net/ethernet/cavium/octeon/octeon3-bgx-nexus.c b/drivers/net/ethernet/cavium/octeon/octeon3-bgx-nexus.c
new file mode 100644
index 0000000..2d82a68
--- /dev/null
+++ b/drivers/net/ethernet/cavium/octeon/octeon3-bgx-nexus.c
@@ -0,0 +1,417 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* The BGX nexus consists of a group of up to four Ethernet MACs (the
+ * LMACs). This driver manages the LMACs and creates a child device
+ * for each of the configured LMACs.
+ *
+ * Copyright (c) 2017 Cavium, Inc.
+ */
+#include <linux/platform_device.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/list.h>
+
+#include "octeon3.h"
+
+static atomic_t request_mgmt_once;
+static atomic_t load_driver_once;
+static atomic_t pki_id;
+
+#define MAX_MIX_PER_NODE 2
+
+#define MAX_MIX (MAX_NODES * MAX_MIX_PER_NODE)
+
+/**
+ * struct mix_port_lmac - Describes a lmac that connects to a mix
+ * port. The lmac must be on the same node as
+ * the mix.
+ * @node: Node of the lmac.
+ * @bgx: Bgx of the lmac.
+ * @lmac: Lmac index.
+ */
+struct mix_port_lmac {
+ int node;
+ int bgx;
+ int lmac;
+};
+
+/* mix_ports_lmacs contains all the lmacs connected to mix ports */
+static struct mix_port_lmac mix_port_lmacs[MAX_MIX];
+
+/* pki_ports keeps track of the lmacs connected to the pki */
+static bool pki_ports[MAX_NODES][MAX_BGX_PER_NODE][MAX_LMAC_PER_BGX];
+
+/* Created platform devices get added to this list */
+static struct list_head pdev_list;
+static struct mutex pdev_list_lock;
+
+/* Created platform device use this structure to add themselves to the list */
+struct pdev_list_item {
+ struct list_head list;
+ struct platform_device *pdev;
+};
+
+/**
+ * is_lmac_to_mix() - Search the list of lmacs connected to mix'es for a match.
+ * @node: Numa node of lmac to search for.
+ * @bgx: Bgx of lmac to search for.
+ * @lmac: Lmac index to search for.
+ *
+ * Return: true if the lmac is connected to a mix.
+ * false if the lmac is not connected to a mix.
+ */
+static bool is_lmac_to_mix(int node, int bgx, int lmac)
+{
+ int i;
+
+ for (i = 0; i < MAX_MIX; i++) {
+ if (mix_port_lmacs[i].node == node &&
+ mix_port_lmacs[i].bgx == bgx &&
+ mix_port_lmacs[i].lmac == lmac)
+ return true;
+ }
+
+ return false;
+}
+
+/**
+ * is_lmac_to_pki() - Search the list of lmacs connected to the pki for a match.
+ * @node: Numa node of lmac to search for.
+ * @bgx: Bgx of lmac to search for.
+ * @lmac: Lmac index to search for.
+ *
+ * Return: true if the lmac is connected to the pki.
+ * false if the lmac is not connected to the pki.
+ */
+static bool is_lmac_to_pki(int node, int bgx, int lmac)
+{
+ return pki_ports[node][bgx][lmac];
+}
+
+/**
+ * is_lmac_to_xcv() - Check if this lmac is connected to the xcv block (rgmii).
+ * @of_node: Device node to check.
+ *
+ * Return: true if the lmac is connected to the xcv port.
+ * false if the lmac is not connected to the xcv port.
+ */
+static bool is_lmac_to_xcv(struct device_node *of_node)
+{
+ return of_device_is_compatible(of_node, "cavium,octeon-7360-xcv");
+}
+
+static int bgx_probe(struct platform_device *pdev)
+{
+ struct mac_platform_data platform_data;
+ struct platform_device *new_dev;
+ struct platform_device *pki_dev;
+ struct device_node *child;
+ const __be32 *reg;
+ int interface;
+ int numa_node;
+ char id[64];
+ int r = 0;
+ u64 addr;
+ u32 port;
+ u64 data;
+ int i;
+
+ reg = of_get_property(pdev->dev.of_node, "reg", NULL);
+ addr = of_translate_address(pdev->dev.of_node, reg);
+ interface = bgx_addr_to_interface(addr);
+ numa_node = bgx_node_to_numa_node(pdev->dev.of_node);
+
+ /* Assign 8 CAM entries per LMAC */
+ for (i = 0; i < 32; i++) {
+ data = i >> 3;
+ oct_csr_write(data, BGX_CMR_RX_ADRX_CAM(numa_node, interface, i));
+ }
+
+ for_each_available_child_of_node(pdev->dev.of_node, child) {
+ struct pdev_list_item *pdev_item;
+ bool is_mix = false;
+ bool is_pki = false;
+ bool is_xcv = false;
+
+ if (!of_device_is_compatible(child, "cavium,octeon-7890-bgx-port") &&
+ !of_device_is_compatible(child, "cavium,octeon-7360-xcv"))
+ continue;
+ r = of_property_read_u32(child, "reg", &port);
+ if (r)
+ return -ENODEV;
+
+ is_mix = is_lmac_to_mix(numa_node, interface, port);
+ is_pki = is_lmac_to_pki(numa_node, interface, port);
+ is_xcv = is_lmac_to_xcv(child);
+
+ /* Check if this port should be configured */
+ if (!is_mix && !is_pki)
+ continue;
+
+ /* Connect to PKI/PKO */
+ data = oct_csr_read(BGX_CMR_CONFIG(numa_node, interface, port));
+ if (is_mix)
+ data |= BIT(11);
+ else
+ data &= ~BIT(11);
+ oct_csr_write(data, BGX_CMR_CONFIG(numa_node, interface, port));
+
+ /* Unreset the mix bgx interface or it will interfare with the
+ * other ports.
+ */
+ if (is_mix) {
+ data = oct_csr_read(BGX_CMR_GLOBAL_CONFIG(numa_node, interface));
+ if (!port)
+ data &= ~BIT(3);
+ else if (port == 1)
+ data &= ~BIT(4);
+ oct_csr_write(data, BGX_CMR_GLOBAL_CONFIG(numa_node, interface));
+ }
+
+ snprintf(id, sizeof(id), "%llx.%u.ethernet-mac",
+ (unsigned long long)addr, port);
+ new_dev = of_platform_device_create(child, id, &pdev->dev);
+ if (!new_dev) {
+ dev_err(&pdev->dev, "Error creating %s\n", id);
+ continue;
+ }
+ platform_data.mac_type = BGX_MAC;
+ platform_data.numa_node = numa_node;
+ platform_data.interface = interface;
+ platform_data.port = port;
+ if (is_xcv)
+ platform_data.src_type = XCV;
+ else
+ platform_data.src_type = QLM;
+
+ /* Add device to the list of created devices so we can
+ * remove it on exit.
+ */
+ pdev_item = kmalloc(sizeof(*pdev_item), GFP_KERNEL);
+ pdev_item->pdev = new_dev;
+ mutex_lock(&pdev_list_lock);
+ list_add(&pdev_item->list, &pdev_list);
+ mutex_unlock(&pdev_list_lock);
+
+ i = atomic_inc_return(&pki_id);
+ pki_dev = platform_device_register_data(&new_dev->dev,
+ is_mix ? "octeon_mgmt" : "ethernet-mac-pki",
+ i, &platform_data,
+ sizeof(platform_data));
+ dev_info(&pdev->dev, "Created %s %u\n",
+ is_mix ? "MIX" : "PKI", pki_dev->id);
+
+ /* Add device to the list of created devices so we can
+ * remove it on exit.
+ */
+ pdev_item = kmalloc(sizeof(*pdev_item), GFP_KERNEL);
+ pdev_item->pdev = pki_dev;
+ mutex_lock(&pdev_list_lock);
+ list_add(&pdev_item->list, &pdev_list);
+ mutex_unlock(&pdev_list_lock);
+
+#ifdef CONFIG_NUMA
+ new_dev->dev.numa_node = pdev->dev.numa_node;
+ pki_dev->dev.numa_node = pdev->dev.numa_node;
+#endif
+ /* One time request driver module */
+ if (is_mix) {
+ if (atomic_cmpxchg(&request_mgmt_once, 0, 1) == 0)
+ request_module_nowait("octeon_mgmt");
+ }
+ if (is_pki) {
+ if (atomic_cmpxchg(&load_driver_once, 0, 1) == 0)
+ request_module_nowait("octeon3-ethernet");
+ }
+ }
+
+ dev_info(&pdev->dev, "Probed\n");
+ return 0;
+}
+
+/**
+ * bgx_mix_init_from_fdt() - Initialize the list of lmacs that connect to mix
+ * ports from information in the device tree.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+static int bgx_mix_init_from_fdt(void)
+{
+ struct device_node *parent = NULL;
+ struct device_node *node;
+ int mix = 0;
+
+ for_each_compatible_node(node, NULL, "cavium,octeon-7890-mix") {
+ struct device_node *lmac_fdt_node;
+ const __be32 *reg;
+ u64 addr;
+ u32 t;
+
+ /* Get the fdt node of the lmac connected to this mix */
+ lmac_fdt_node = of_parse_phandle(node, "cavium,mac-handle", 0);
+ if (!lmac_fdt_node)
+ goto err;
+
+ /* Get the numa node and bgx of the lmac */
+ parent = of_get_parent(lmac_fdt_node);
+ if (!parent)
+ goto err;
+ reg = of_get_property(parent, "reg", NULL);
+ if (!reg)
+ goto err;
+ addr = of_translate_address(parent, reg);
+ of_node_put(parent);
+ parent = NULL;
+
+ mix_port_lmacs[mix].node = bgx_node_to_numa_node(parent);
+ mix_port_lmacs[mix].bgx = bgx_addr_to_interface(addr);
+
+ /* Get the lmac index */
+ if (!of_property_read_u32(lmac_fdt_node, "reg", &t))
+ goto err;
+
+ mix_port_lmacs[mix].lmac = t;
+
+ mix++;
+ if (mix >= MAX_MIX)
+ break;
+ }
+
+ return 0;
+ err:
+ pr_warn("Invalid device tree mix port information\n");
+ for (mix = 0; mix < MAX_MIX; mix++) {
+ mix_port_lmacs[mix].node = -1;
+ mix_port_lmacs[mix].bgx = -1;
+ mix_port_lmacs[mix].lmac = -1;
+ }
+ if (parent)
+ of_node_put(parent);
+
+ return -EINVAL;
+}
+
+/**
+ * bgx_mix_port_lmacs_init() - Initialize the mix_port_lmacs variable with the
+ * lmacs that connect to mix ports.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+static int bgx_mix_port_lmacs_init(void)
+{
+ int mix;
+
+ /* Start with no mix ports configured */
+ for (mix = 0; mix < MAX_MIX; mix++) {
+ mix_port_lmacs[mix].node = -1;
+ mix_port_lmacs[mix].bgx = -1;
+ mix_port_lmacs[mix].lmac = -1;
+ }
+
+ /* Configure the mix ports using information from the device tree if no
+ * parameter was passed. Otherwise, use the information in the module
+ * parameter.
+ */
+ bgx_mix_init_from_fdt();
+
+ return 0;
+}
+
+/**
+ * bgx_pki_ports_init() - Initialize the pki_ports variable with the lmacs that
+ * connect to the pki.
+ *
+ * Returns 0 if successful.
+ * Returns < 0 for error codes.
+ */
+static int bgx_pki_ports_init(void)
+{
+ int i;
+ int j;
+ int k;
+
+ for (i = 0; i < MAX_NODES; i++) {
+ for (j = 0; j < MAX_BGX_PER_NODE; j++) {
+ for (k = 0; k < MAX_LMAC_PER_BGX; k++)
+ pki_ports[i][j][k] = true;
+ }
+ }
+
+ return 0;
+}
+
+static int bgx_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static void bgx_shutdown(struct platform_device *pdev)
+{
+}
+
+static const struct of_device_id bgx_match[] = {
+ {
+ .compatible = "cavium,octeon-7890-bgx",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, bgx_match);
+
+static struct platform_driver bgx_driver = {
+ .probe = bgx_probe,
+ .remove = bgx_remove,
+ .shutdown = bgx_shutdown,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = KBUILD_MODNAME,
+ .of_match_table = bgx_match,
+ },
+};
+
+/* Allow bgx_port driver to force this driver to load */
+void bgx_nexus_load(void)
+{
+}
+EXPORT_SYMBOL(bgx_nexus_load);
+
+static int __init bgx_driver_init(void)
+{
+ int r;
+
+ INIT_LIST_HEAD(&pdev_list);
+ mutex_init(&pdev_list_lock);
+
+ bgx_mix_port_lmacs_init();
+ bgx_pki_ports_init();
+
+ r = platform_driver_register(&bgx_driver);
+
+ return r;
+}
+
+static void __exit bgx_driver_exit(void)
+{
+ struct pdev_list_item *pdev_item;
+
+ mutex_lock(&pdev_list_lock);
+ while (!list_empty(&pdev_list)) {
+ pdev_item = list_first_entry(&pdev_list,
+ struct pdev_list_item, list);
+ list_del(&pdev_item->list);
+ platform_device_unregister(pdev_item->pdev);
+ kfree(pdev_item);
+ }
+ mutex_unlock(&pdev_list_lock);
+
+ platform_driver_unregister(&bgx_driver);
+}
+
+module_init(bgx_driver_init);
+module_exit(bgx_driver_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Cavium, Inc. <support@caviumnetworks.com>");
+MODULE_DESCRIPTION("Cavium, Inc. BGX MAC Nexus driver.");
diff --git a/drivers/net/ethernet/cavium/octeon/octeon3-bgx-port.c b/drivers/net/ethernet/cavium/octeon/octeon3-bgx-port.c
new file mode 100644
index 0000000..260c9e9
--- /dev/null
+++ b/drivers/net/ethernet/cavium/octeon/octeon3-bgx-port.c
@@ -0,0 +1,2003 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2017 Cavium, Inc.
+ *
+ * The BGX port (LMAC) is a single Ethernet MAC that may be assigned
+ * to either the octeon3-ethernet packet processor or the octeon_mgmt
+ * packet processor.
+ */
+#include <linux/platform_device.h>
+#include <linux/etherdevice.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+#include <linux/netdevice.h>
+#include <linux/of_mdio.h>
+#include <linux/of_net.h>
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+
+#include <asm/octeon/octeon.h>
+
+#include "octeon3.h"
+
+struct bgx_port_priv {
+ int node;
+ int bgx;
+ int index; /* Port index on BGX block*/
+ enum port_mode mode;
+ int pknd;
+ int qlm;
+ const u8 *mac_addr;
+ struct phy_device *phydev;
+ struct device_node *phy_np;
+ int phy_mode;
+ bool mode_1000basex;
+ bool bgx_as_phy;
+ struct net_device *netdev;
+ struct port_status (*get_link)(struct bgx_port_priv *priv);
+ int (*set_link)(struct bgx_port_priv *priv, struct port_status status);
+ struct port_status last_status;
+ struct delayed_work dwork;
+};
+
+/* lmac_pknd keeps track of the port kinds assigned to the lmacs */
+static int lmac_pknd[MAX_NODES][MAX_BGX_PER_NODE][MAX_LMAC_PER_BGX];
+
+static struct workqueue_struct *check_state_wq;
+static DEFINE_MUTEX(check_state_wq_mutex);
+
+int bgx_port_get_qlm(int node, int bgx, int index)
+{
+ int qlm = -1;
+ u64 data;
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
+ if (bgx < 2) {
+ data = oct_csr_read(BGX_CMR_GLOBAL_CONFIG(node, bgx));
+ if (data & 1)
+ qlm = bgx + 2;
+ else
+ qlm = bgx;
+ } else {
+ qlm = bgx + 2;
+ }
+ } else if (OCTEON_IS_MODEL(OCTEON_CN73XX)) {
+ if (bgx < 2) {
+ qlm = bgx + 2;
+ } else {
+ /* Ports on bgx2 can be connected to qlm5 or qlm6 */
+ if (index < 2)
+ qlm = 5;
+ else
+ qlm = 6;
+ }
+ } else if (OCTEON_IS_MODEL(OCTEON_CNF75XX)) {
+ /* Ports on bgx0 can be connected to qlm4 or qlm5 */
+ if (index < 2)
+ qlm = 4;
+ else
+ qlm = 5;
+ }
+
+ return qlm;
+}
+EXPORT_SYMBOL(bgx_port_get_qlm);
+
+/* Returns the mode of the bgx port */
+enum port_mode bgx_port_get_mode(int node, int bgx, int index)
+{
+ enum port_mode mode;
+ u64 data;
+
+ data = oct_csr_read(BGX_CMR_CONFIG(node, bgx, index));
+
+ switch ((data >> 8) & 7) {
+ case 0:
+ mode = PORT_MODE_SGMII;
+ break;
+ case 1:
+ mode = PORT_MODE_XAUI;
+ break;
+ case 2:
+ mode = PORT_MODE_RXAUI;
+ break;
+ case 3:
+ data = oct_csr_read(BGX_SPU_BR_PMD_CONTROL(node, bgx, index));
+ /* The use of training differentiates 10G_KR from xfi */
+ if (data & BIT(1))
+ mode = PORT_MODE_10G_KR;
+ else
+ mode = PORT_MODE_XFI;
+ break;
+ case 4:
+ data = oct_csr_read(BGX_SPU_BR_PMD_CONTROL(node, bgx, index));
+ /* The use of training differentiates 40G_KR4 from xlaui */
+ if (data & BIT(1))
+ mode = PORT_MODE_40G_KR4;
+ else
+ mode = PORT_MODE_XLAUI;
+ break;
+ case 5:
+ mode = PORT_MODE_RGMII;
+ break;
+ default:
+ mode = PORT_MODE_DISABLED;
+ break;
+ }
+
+ return mode;
+}
+EXPORT_SYMBOL(bgx_port_get_mode);
+
+int bgx_port_allocate_pknd(int node)
+{
+ struct global_resource_tag tag;
+ char buf[16];
+ int pknd;
+
+ strncpy((char *)&tag.lo, "cvm_pknd", 8);
+ snprintf(buf, 16, "_%d......", node);
+ memcpy(&tag.hi, buf, 8);
+
+ res_mgr_create_resource(tag, 64);
+ pknd = res_mgr_alloc(tag, -1, false);
+ if (pknd < 0) {
+ pr_err("bgx-port: Failed to allocate pknd\n");
+ return -ENODEV;
+ }
+
+ return pknd;
+}
+EXPORT_SYMBOL(bgx_port_allocate_pknd);
+
+int bgx_port_get_pknd(int node, int bgx, int index)
+{
+ return lmac_pknd[node][bgx][index];
+}
+EXPORT_SYMBOL(bgx_port_get_pknd);
+
+/* GSER-20075 */
+static void bgx_port_gser_20075(struct bgx_port_priv *priv, int qlm, int lane)
+{
+ u64 addr;
+ u64 data;
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) &&
+ (lane == -1 || lane == 3)) {
+ /* Enable software control */
+ addr = GSER_BR_RX_CTL(priv->node, qlm, 3);
+ data = oct_csr_read(addr);
+ data |= BIT(2);
+ oct_csr_write(data, addr);
+
+ /* Clear the completion flag */
+ addr = GSER_BR_RX_EER(priv->node, qlm, 3);
+ data = oct_csr_read(addr);
+ data &= ~BIT(14);
+ oct_csr_write(data, addr);
+
+ /* Initiate a new request on lane 2 */
+ if (lane == 3) {
+ addr = GSER_BR_RX_EER(priv->node, qlm, 2);
+ data = oct_csr_read(addr);
+ data |= BIT(15);
+ oct_csr_write(data, addr);
+ }
+ }
+}
+
+static void bgx_common_init_pknd(struct bgx_port_priv *priv)
+{
+ int num_ports;
+ u64 data;
+
+ /* Setup pkind */
+ priv->pknd = bgx_port_allocate_pknd(priv->node);
+ lmac_pknd[priv->node][priv->bgx][priv->index] = priv->pknd;
+ data = oct_csr_read(BGX_CMR_RX_ID_MAP(priv->node, priv->bgx, priv->index));
+ data &= ~GENMASK_ULL(7, 0);
+ data |= priv->pknd;
+ if (OCTEON_IS_MODEL(OCTEON_CN73XX)) {
+ /* Change the default reassembly id (max allowed is 14) */
+ data &= ~GENMASK_ULL(14, 8);
+ data |= ((4 * priv->bgx) + 2 + priv->index) << 8;
+ }
+ oct_csr_write(data, BGX_CMR_RX_ID_MAP(priv->node, priv->bgx, priv->index));
+
+ /* Set backpressure channel mask AND/OR registers */
+ data = oct_csr_read(BGX_CMR_CHAN_MSK_AND(priv->node, priv->bgx));
+ data |= 0xffff << (16 * priv->index);
+ oct_csr_write(data, BGX_CMR_CHAN_MSK_AND(priv->node, priv->bgx));
+
+ data = oct_csr_read(BGX_CMR_CHAN_MSK_OR(priv->node, priv->bgx));
+ data |= 0xffff << (16 * priv->index);
+ oct_csr_write(data, BGX_CMR_CHAN_MSK_OR(priv->node, priv->bgx));
+
+ /* Rx back pressure watermark:
+ * Set to 1/4 of the available lmacs buffer (in multiple of 16 bytes)
+ */
+ data = oct_csr_read(BGX_CMR_TX_LMACS(priv->node, priv->bgx));
+ num_ports = data & 7;
+ data = BGX_RX_FIFO_SIZE / (num_ports * 4 * 16);
+ oct_csr_write(data, BGX_CMR_RX_BP_ON(priv->node, priv->bgx, priv->index));
+}
+
+static int bgx_xgmii_hardware_init(struct bgx_port_priv *priv)
+{
+ u64 clock_mhz;
+ u64 data;
+ u64 ctl;
+
+ /* Set TX Threshold */
+ data = 0x20;
+ oct_csr_write(data, BGX_GMP_GMI_TX_THRESH(priv->node, priv->bgx, priv->index));
+
+ data = oct_csr_read(BGX_GMP_PCS_MISC_CTL(priv->node, priv->bgx, priv->index));
+ data &= ~(BIT(8) | BIT(9));
+ if (priv->mode_1000basex)
+ data |= BIT(8);
+ if (priv->bgx_as_phy)
+ data |= BIT(9);
+ oct_csr_write(data, BGX_GMP_PCS_MISC_CTL(priv->node, priv->bgx, priv->index));
+
+ data = oct_csr_read(BGX_GMP_PCS_LINK_TIMER(priv->node, priv->bgx, priv->index));
+ clock_mhz = octeon_get_io_clock_rate() / 1000000;
+ if (priv->mode_1000basex)
+ data = (10000ull * clock_mhz) >> 10;
+ else
+ data = (1600ull * clock_mhz) >> 10;
+ oct_csr_write(data, BGX_GMP_PCS_LINK_TIMER(priv->node, priv->bgx, priv->index));
+
+ if (priv->mode_1000basex) {
+ data = oct_csr_read(BGX_GMP_PCS_AN_ADV(priv->node, priv->bgx, priv->index));
+ data &= ~(GENMASK_ULL(13, 12) | GENMASK_ULL(8, 7));
+ data |= 3 << 7;
+ data |= BIT(6) | BIT(5);
+ oct_csr_write(data, BGX_GMP_PCS_AN_ADV(priv->node, priv->bgx, priv->index));
+ } else if (priv->bgx_as_phy) {
+ data = oct_csr_read(BGX_GMP_PCS_SGM_AN_ADV(priv->node, priv->bgx, priv->index));
+ data |= BIT(12);
+ data &= ~(GENMASK_ULL(11, 10));
+ data |= 2 << 10;
+ oct_csr_write(data, BGX_GMP_PCS_SGM_AN_ADV(priv->node, priv->bgx, priv->index));
+ }
+
+ data = oct_csr_read(BGX_GMP_GMI_TX_APPEND(priv->node, priv->bgx, priv->index));
+ ctl = oct_csr_read(BGX_GMP_GMI_TX_SGMII_CTL(priv->node, priv->bgx, priv->index));
+ ctl &= ~BIT(0);
+ ctl |= (data & BIT(0)) ? 0 : 1;
+ oct_csr_write(ctl, BGX_GMP_GMI_TX_SGMII_CTL(priv->node, priv->bgx, priv->index));
+
+ if (priv->mode == PORT_MODE_RGMII) {
+ /* Disable XCV interface when initialized */
+ data = oct_csr_read(XCV_RESET(priv->node));
+ data &= ~(BIT(63) | BIT(3) | BIT(1));
+ oct_csr_write(data, XCV_RESET(priv->node));
+ }
+
+ return 0;
+}
+
+int bgx_get_tx_fifo_size(struct bgx_port_priv *priv)
+{
+ u64 data;
+ int num_ports;
+
+ data = oct_csr_read(BGX_CMR_TX_LMACS(priv->node, priv->bgx));
+ num_ports = data & 7;
+
+ switch (num_ports) {
+ case 1:
+ return BGX_TX_FIFO_SIZE;
+ case 2:
+ return BGX_TX_FIFO_SIZE / 2;
+ case 3:
+ case 4:
+ return BGX_TX_FIFO_SIZE / 4;
+ default:
+ return 0;
+ }
+}
+
+static int bgx_xaui_hardware_init(struct bgx_port_priv *priv)
+{
+ u64 tx_fifo_size;
+ u64 clock_mhz;
+ u64 data;
+
+ if (octeon_is_simulation()) {
+ /* Enable the port */
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ data |= BIT(15);
+ oct_csr_write(data, BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ } else {
+ /* Reset the port */
+ data = oct_csr_read(BGX_SPU_CONTROL1(priv->node, priv->bgx, priv->index));
+ data |= BIT(15);
+ oct_csr_write(data, BGX_SPU_CONTROL1(priv->node, priv->bgx, priv->index));
+
+ /* Wait for reset to complete */
+ udelay(1);
+ data = oct_csr_read(BGX_SPU_CONTROL1(priv->node, priv->bgx, priv->index));
+ if (data & BIT(15)) {
+ netdev_err(priv->netdev,
+ "BGX%d:%d: SPU stuck in reset\n", priv->bgx, priv->node);
+ return -1;
+ }
+
+ /* Reset the SerDes lanes */
+ data = oct_csr_read(BGX_SPU_CONTROL1(priv->node, priv->bgx, priv->index));
+ data |= BIT(11);
+ oct_csr_write(data, BGX_SPU_CONTROL1(priv->node, priv->bgx, priv->index));
+
+ /* Disable packet reception */
+ data = oct_csr_read(BGX_SPU_MISC_CONTROL(priv->node, priv->bgx, priv->index));
+ data |= BIT(12);
+ oct_csr_write(data, BGX_SPU_MISC_CONTROL(priv->node, priv->bgx, priv->index));
+
+ /* Clear/disable interrupts */
+ data = oct_csr_read(BGX_SMU_RX_INT(priv->node, priv->bgx, priv->index));
+ oct_csr_write(data, BGX_SMU_RX_INT(priv->node, priv->bgx, priv->index));
+ data = oct_csr_read(BGX_SMU_TX_INT(priv->node, priv->bgx, priv->index));
+ oct_csr_write(data, BGX_SMU_TX_INT(priv->node, priv->bgx, priv->index));
+ data = oct_csr_read(BGX_SPU_INT(priv->node, priv->bgx, priv->index));
+ oct_csr_write(data, BGX_SPU_INT(priv->node, priv->bgx, priv->index));
+
+ if ((priv->mode == PORT_MODE_10G_KR ||
+ priv->mode == PORT_MODE_40G_KR4) &&
+ !OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X)) {
+ oct_csr_write(0, BGX_SPU_BR_PMD_LP_CUP(priv->node, priv->bgx, priv->index));
+ oct_csr_write(0, BGX_SPU_BR_PMD_LD_CUP(priv->node, priv->bgx, priv->index));
+ oct_csr_write(0, BGX_SPU_BR_PMD_LD_REP(priv->node, priv->bgx, priv->index));
+ data = oct_csr_read(BGX_SPU_BR_PMD_CONTROL(priv->node, priv->bgx, priv->index));
+ data |= BIT(1);
+ oct_csr_write(data, BGX_SPU_BR_PMD_CONTROL(priv->node, priv->bgx, priv->index));
+ }
+ }
+
+ data = oct_csr_read(BGX_SMU_TX_APPEND(priv->node, priv->bgx, priv->index));
+ data |= BIT(3);
+ oct_csr_write(data, BGX_SMU_TX_APPEND(priv->node, priv->bgx, priv->index));
+
+ if (!octeon_is_simulation()) {
+ /* Disable fec */
+ data = oct_csr_read(BGX_SPU_FEC_CONTROL(priv->node, priv->bgx, priv->index));
+ data &= ~BIT(0);
+ oct_csr_write(data, BGX_SPU_FEC_CONTROL(priv->node, priv->bgx, priv->index));
+
+ /* Disable/configure auto negotiation */
+ data = oct_csr_read(BGX_SPU_AN_CONTROL(priv->node, priv->bgx, priv->index));
+ data &= ~(BIT(13) | BIT(12));
+ oct_csr_write(data, BGX_SPU_AN_CONTROL(priv->node, priv->bgx, priv->index));
+
+ data = oct_csr_read(BGX_SPU_AN_ADV(priv->node, priv->bgx, priv->index));
+ data &= ~(BIT(47) | BIT(26) | BIT(25) | BIT(22) | BIT(21) |
+ BIT(13) | BIT(12));
+ data |= BIT(46);
+ if (priv->mode == PORT_MODE_40G_KR4)
+ data |= BIT(24);
+ else
+ data &= ~BIT(24);
+ if (priv->mode == PORT_MODE_10G_KR)
+ data |= BIT(23);
+ else
+ data &= ~BIT(23);
+ oct_csr_write(data, BGX_SPU_AN_ADV(priv->node, priv->bgx, priv->index));
+
+ data = oct_csr_read(BGX_SPU_DBG_CONTROL(priv->node, priv->bgx));
+ data |= BIT(29);
+ if (priv->mode == PORT_MODE_10G_KR ||
+ priv->mode == PORT_MODE_40G_KR4)
+ data |= BIT(18);
+ else
+ data &= ~BIT(18);
+ oct_csr_write(data, BGX_SPU_DBG_CONTROL(priv->node, priv->bgx));
+
+ /* Enable the port */
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ data |= BIT(15);
+ oct_csr_write(data, BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) && priv->index) {
+ /* BGX-22429 */
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, 0));
+ data |= BIT(15);
+ oct_csr_write(data, BGX_CMR_CONFIG(priv->node, priv->bgx, 0));
+ }
+ }
+
+ data = oct_csr_read(BGX_SPU_CONTROL1(priv->node, priv->bgx, priv->index));
+ data &= ~BIT(11);
+ oct_csr_write(data, BGX_SPU_CONTROL1(priv->node, priv->bgx, priv->index));
+
+ data = oct_csr_read(BGX_SMU_TX_CTL(priv->node, priv->bgx, priv->index));
+ data |= BIT(0);
+ data &= ~BIT(1);
+ oct_csr_write(data, BGX_SMU_TX_CTL(priv->node, priv->bgx, priv->index));
+
+ clock_mhz = octeon_get_io_clock_rate() / 1000000;
+ data = oct_csr_read(BGX_SPU_DBG_CONTROL(priv->node, priv->bgx));
+ data &= ~GENMASK_ULL(43, 32);
+ data |= (clock_mhz - 1) << 32;
+ oct_csr_write(data, BGX_SPU_DBG_CONTROL(priv->node, priv->bgx));
+
+ /* Fifo in 16-byte words */
+ tx_fifo_size = bgx_get_tx_fifo_size(priv);
+ tx_fifo_size >>= 4;
+ oct_csr_write(tx_fifo_size - 10, BGX_SMU_TX_THRESH(priv->node, priv->bgx, priv->index));
+
+ if (priv->mode == PORT_MODE_RXAUI && priv->phy_np) {
+ data = oct_csr_read(BGX_SPU_MISC_CONTROL(priv->node, priv->bgx, priv->index));
+ data |= BIT(10);
+ oct_csr_write(data, BGX_SPU_MISC_CONTROL(priv->node, priv->bgx, priv->index));
+ }
+
+ /* Some PHYs take up to 250ms to stabilize */
+ if (!octeon_is_simulation())
+ usleep_range(250000, 300000);
+
+ return 0;
+}
+
+/* Configure/initialize a bgx port. */
+static int bgx_port_init(struct bgx_port_priv *priv)
+{
+ int rc = 0;
+ u64 data;
+
+ /* GSER-20956 */
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) &&
+ (priv->mode == PORT_MODE_10G_KR ||
+ priv->mode == PORT_MODE_XFI ||
+ priv->mode == PORT_MODE_40G_KR4 ||
+ priv->mode == PORT_MODE_XLAUI)) {
+ /* Disable link training */
+ data = oct_csr_read(BGX_SPU_BR_PMD_CONTROL(priv->node, priv->bgx, priv->index));
+ data &= ~(1 << 1);
+ oct_csr_write(data, BGX_SPU_BR_PMD_CONTROL(priv->node, priv->bgx, priv->index));
+ }
+
+ bgx_common_init_pknd(priv);
+
+ if (priv->mode == PORT_MODE_SGMII ||
+ priv->mode == PORT_MODE_RGMII)
+ rc = bgx_xgmii_hardware_init(priv);
+ else
+ rc = bgx_xaui_hardware_init(priv);
+
+ return rc;
+}
+
+static int bgx_port_get_qlm_speed(struct bgx_port_priv *priv, int qlm)
+{
+ enum lane_mode lmode;
+ u64 data;
+
+ data = oct_csr_read(GSER_LANE_MODE(priv->node, qlm));
+ lmode = data & 0xf;
+
+ switch (lmode) {
+ case R_25G_REFCLK100:
+ return 2500;
+ case R_5G_REFCLK100:
+ return 5000;
+ case R_8G_REFCLK100:
+ return 8000;
+ case R_125G_REFCLK15625_KX:
+ return 1250;
+ case R_3125G_REFCLK15625_XAUI:
+ return 3125;
+ case R_103125G_REFCLK15625_KR:
+ return 10312;
+ case R_125G_REFCLK15625_SGMII:
+ return 1250;
+ case R_5G_REFCLK15625_QSGMII:
+ return 5000;
+ case R_625G_REFCLK15625_RXAUI:
+ return 6250;
+ case R_25G_REFCLK125:
+ return 2500;
+ case R_5G_REFCLK125:
+ return 5000;
+ case R_8G_REFCLK125:
+ return 8000;
+ default:
+ return 0;
+ }
+}
+
+static struct port_status bgx_port_get_sgmii_link(struct bgx_port_priv *priv)
+{
+ struct port_status status;
+ int speed;
+
+ /* The simulator always uses a 1Gbps full duplex port */
+ if (octeon_is_simulation()) {
+ status.link = 1;
+ status.duplex = DUPLEX_FULL;
+ status.speed = 1000;
+ } else {
+ /* Use the qlm speed */
+ speed = bgx_port_get_qlm_speed(priv, priv->qlm);
+ status.link = 1;
+ status.duplex = DUPLEX_FULL;
+ status.speed = speed * 8 / 10;
+ }
+
+ return status;
+}
+
+static int bgx_port_xgmii_set_link_up(struct bgx_port_priv *priv)
+{
+ u64 data;
+ int timeout;
+
+ if (!octeon_is_simulation()) {
+ /* PCS reset sequence */
+ data = oct_csr_read(BGX_GMP_PCS_MR_CONTROL(priv->node, priv->bgx, priv->index));
+ data |= BIT(15);
+ oct_csr_write(data, BGX_GMP_PCS_MR_CONTROL(priv->node, priv->bgx, priv->index));
+
+ /* Wait for reset to complete */
+ udelay(1);
+ data = oct_csr_read(BGX_GMP_PCS_MR_CONTROL(priv->node, priv->bgx, priv->index));
+ if (data & BIT(15)) {
+ netdev_err(priv->netdev,
+ "BGX%d:%d: PCS stuck in reset\n", priv->bgx, priv->node);
+ return -1;
+ }
+ }
+
+ /* Autonegotiation */
+ if (priv->phy_np) {
+ data = oct_csr_read(BGX_GMP_PCS_MR_CONTROL(priv->node, priv->bgx, priv->index));
+ data |= BIT(9);
+ if (priv->mode != PORT_MODE_RGMII)
+ data |= BIT(12);
+ else
+ data &= ~BIT(12);
+ data &= ~BIT(11);
+ oct_csr_write(data, BGX_GMP_PCS_MR_CONTROL(priv->node, priv->bgx, priv->index));
+ } else {
+ data = oct_csr_read(BGX_GMP_PCS_MR_CONTROL(priv->node, priv->bgx, priv->index));
+ data |= BIT(6);
+ data &= ~(BIT(13) | BIT(12) | BIT(11));
+ oct_csr_write(data, BGX_GMP_PCS_MR_CONTROL(priv->node, priv->bgx, priv->index));
+ }
+
+ data = oct_csr_read(BGX_GMP_PCS_MISC_CTL(priv->node, priv->bgx, priv->index));
+ data &= ~(BIT(9) | BIT(8));
+ if (priv->mode_1000basex)
+ data |= BIT(8);
+ if (priv->bgx_as_phy)
+ data |= BIT(9);
+ oct_csr_write(data, BGX_GMP_PCS_MISC_CTL(priv->node, priv->bgx, priv->index));
+
+ /* Wait for autonegotiation to complete */
+ if (!octeon_is_simulation() && !priv->bgx_as_phy &&
+ priv->mode != PORT_MODE_RGMII) {
+ timeout = 10000;
+ do {
+ data = oct_csr_read(BGX_GMP_PCS_MR_STATUS(priv->node, priv->bgx, priv->index));
+ if (data & BIT(5))
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout) {
+ netdev_err(priv->netdev, "BGX%d:%d: AN timeout\n", priv->bgx, priv->node);
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static void bgx_port_rgmii_set_link_down(struct bgx_port_priv *priv)
+{
+ int rx_fifo_len;
+ u64 data;
+
+ data = oct_csr_read(XCV_RESET(priv->node));
+ data &= ~BIT(1);
+ oct_csr_write(data, XCV_RESET(priv->node));
+ /* Is this read really needed? TODO */
+ data = oct_csr_read(XCV_RESET(priv->node));
+
+ /* Wait for 2 MTUs */
+ mdelay(10);
+
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ data &= ~BIT(14);
+ oct_csr_write(data, BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+
+ /* Wait for the rx and tx fifos to drain */
+ do {
+ data = oct_csr_read(BGX_CMR_RX_FIFO_LEN(priv->node, priv->bgx, priv->index));
+ rx_fifo_len = data & 0x1fff;
+ data = oct_csr_read(BGX_CMR_TX_FIFO_LEN(priv->node, priv->bgx, priv->index));
+ } while (rx_fifo_len > 0 || !(data & BIT(13)));
+
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ data &= ~BIT(13);
+ oct_csr_write(data, BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+
+ data = oct_csr_read(XCV_RESET(priv->node));
+ data &= ~BIT(3);
+ oct_csr_write(data, XCV_RESET(priv->node));
+
+ data = oct_csr_read(BGX_GMP_PCS_MR_CONTROL(priv->node, priv->bgx, priv->index));
+ data |= BIT(11);
+ oct_csr_write(data, BGX_GMP_PCS_MR_CONTROL(priv->node, priv->bgx, priv->index));
+}
+
+static void bgx_port_sgmii_set_link_down(struct bgx_port_priv *priv)
+{
+ u64 data;
+
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ data &= ~(BIT(14) | BIT(13));
+ oct_csr_write(data, BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+
+ data = oct_csr_read(BGX_GMP_PCS_MR_CONTROL(priv->node, priv->bgx, priv->index));
+ data &= ~BIT(12);
+ oct_csr_write(data, BGX_GMP_PCS_MR_CONTROL(priv->node, priv->bgx, priv->index));
+
+ data = oct_csr_read(BGX_GMP_PCS_MISC_CTL(priv->node, priv->bgx, priv->index));
+ data |= BIT(11);
+ oct_csr_write(data, BGX_GMP_PCS_MISC_CTL(priv->node, priv->bgx, priv->index));
+ data = oct_csr_read(BGX_GMP_PCS_MISC_CTL(priv->node, priv->bgx, priv->index));
+}
+
+static int bgx_port_sgmii_set_link_speed(struct bgx_port_priv *priv,
+ struct port_status status)
+{
+ int timeout;
+ u64 miscx;
+ u64 data;
+ u64 prtx;
+
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ data &= ~(BIT(14) | BIT(13));
+ oct_csr_write(data, BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+
+ timeout = 10000;
+ do {
+ prtx = oct_csr_read(BGX_GMP_GMI_PRT_CFG(priv->node, priv->bgx, priv->index));
+ if (prtx & BIT(13) && prtx & BIT(12))
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout) {
+ netdev_err(priv->netdev, "BGX%d:%d: GMP idle timeout\n",
+ priv->bgx, priv->node);
+ return -1;
+ }
+
+ prtx = oct_csr_read(BGX_GMP_GMI_PRT_CFG(priv->node, priv->bgx, priv->index));
+ miscx = oct_csr_read(BGX_GMP_PCS_MISC_CTL(priv->node, priv->bgx, priv->index));
+ if (status.link) {
+ miscx &= ~BIT(11);
+ if (status.duplex == DUPLEX_FULL)
+ prtx |= BIT(2);
+ else
+ prtx &= ~BIT(2);
+ } else {
+ miscx |= BIT(11);
+ }
+
+ switch (status.speed) {
+ case 10:
+ prtx &= ~(BIT(3) | BIT(1));
+ prtx |= BIT(8);
+ miscx &= ~GENMASK_ULL(6, 0);
+ miscx |= 25;
+ oct_csr_write(64, BGX_GMP_GMI_TX_SLOT(priv->node, priv->bgx, priv->index));
+ oct_csr_write(0, BGX_GMP_GMI_TX_BURST(priv->node, priv->bgx, priv->index));
+ break;
+ case 100:
+ prtx &= ~(BIT(8) | BIT(3) | BIT(1));
+ miscx &= ~GENMASK_ULL(6, 0);
+ miscx |= 5;
+ oct_csr_write(64, BGX_GMP_GMI_TX_SLOT(priv->node, priv->bgx, priv->index));
+ oct_csr_write(0, BGX_GMP_GMI_TX_BURST(priv->node, priv->bgx, priv->index));
+ break;
+ case 1000:
+ prtx |= (BIT(3) | BIT(1));
+ prtx &= ~BIT(8);
+ miscx &= ~GENMASK_ULL(6, 0);
+ miscx |= 1;
+ oct_csr_write(512, BGX_GMP_GMI_TX_SLOT(priv->node, priv->bgx, priv->index));
+ if (status.duplex == DUPLEX_FULL)
+ oct_csr_write(0, BGX_GMP_GMI_TX_BURST(priv->node, priv->bgx, priv->index));
+ else
+ oct_csr_write(8192, BGX_GMP_GMI_TX_BURST(priv->node, priv->bgx, priv->index));
+ break;
+ default:
+ break;
+ }
+
+ oct_csr_write(miscx, BGX_GMP_PCS_MISC_CTL(priv->node, priv->bgx, priv->index));
+ oct_csr_write(prtx, BGX_GMP_GMI_PRT_CFG(priv->node, priv->bgx, priv->index));
+ /* This read verifies the write completed */
+ prtx = oct_csr_read(BGX_GMP_GMI_PRT_CFG(priv->node, priv->bgx, priv->index));
+
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ data |= (BIT(14) | BIT(13));
+ oct_csr_write(data, BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+
+ return 0;
+}
+
+static int bgx_port_rgmii_set_link_speed(struct bgx_port_priv *priv,
+ struct port_status status)
+{
+ bool speed_changed = false;
+ bool int_lpbk = false;
+ bool do_credits;
+ int speed;
+ u64 data;
+
+ switch (status.speed) {
+ case 10:
+ speed = 0;
+ break;
+ case 100:
+ speed = 1;
+ break;
+ case 1000:
+ default:
+ speed = 2;
+ break;
+ }
+
+ /* Do credits if link came up */
+ data = oct_csr_read(XCV_RESET(priv->node));
+ do_credits = status.link && !(data & BIT(63));
+
+ /* Was there a speed change */
+ data = oct_csr_read(XCV_CTL(priv->node));
+ if ((data & GENMASK_ULL(1, 0)) != speed)
+ speed_changed = true;
+
+ /* Clear clkrst when in internal loopback */
+ if (data & BIT(2)) {
+ int_lpbk = true;
+ data = oct_csr_read(XCV_RESET(priv->node));
+ data &= ~BIT(15);
+ oct_csr_write(data, XCV_RESET(priv->node));
+ }
+
+ /* Link came up or there was a speed change */
+ data = oct_csr_read(XCV_RESET(priv->node));
+ if (status.link && (!(data & BIT(63)) || speed_changed)) {
+ data |= BIT(63);
+ oct_csr_write(data, XCV_RESET(priv->node));
+
+ data = oct_csr_read(XCV_CTL(priv->node));
+ data &= ~GENMASK_ULL(1, 0);
+ data |= speed;
+ oct_csr_write(data, XCV_CTL(priv->node));
+
+ data = oct_csr_read(XCV_DLL_CTL(priv->node));
+ data |= BIT(23);
+ data &= ~GENMASK_ULL(22, 16);
+ data &= ~BIT(15);
+ oct_csr_write(data, XCV_DLL_CTL(priv->node));
+
+ data = oct_csr_read(XCV_DLL_CTL(priv->node));
+ data &= ~GENMASK_ULL(1, 0);
+ oct_csr_write(data, XCV_DLL_CTL(priv->node));
+
+ data = oct_csr_read(XCV_RESET(priv->node));
+ data &= ~BIT(11);
+ oct_csr_write(data, XCV_RESET(priv->node));
+
+ usleep_range(10, 100);
+
+ data = oct_csr_read(XCV_COMP_CTL(priv->node));
+ data &= ~BIT(63);
+ oct_csr_write(data, XCV_COMP_CTL(priv->node));
+
+ data = oct_csr_read(XCV_RESET(priv->node));
+ data |= BIT(7);
+ oct_csr_write(data, XCV_RESET(priv->node));
+
+ data = oct_csr_read(XCV_RESET(priv->node));
+ if (int_lpbk)
+ data &= ~BIT(15);
+ else
+ data |= BIT(15);
+ oct_csr_write(data, XCV_RESET(priv->node));
+
+ data = oct_csr_read(XCV_RESET(priv->node));
+ data |= BIT(2) | BIT(0);
+ oct_csr_write(data, XCV_RESET(priv->node));
+ }
+
+ data = oct_csr_read(XCV_RESET(priv->node));
+ if (status.link)
+ data |= BIT(3) | BIT(1);
+ else
+ data &= ~(BIT(3) | BIT(1));
+ oct_csr_write(data, XCV_RESET(priv->node));
+
+ if (!status.link) {
+ mdelay(10);
+ oct_csr_write(0, XCV_RESET(priv->node));
+ }
+
+ /* Grant pko tx credits */
+ if (do_credits) {
+ data = oct_csr_read(XCV_BATCH_CRD_RET(priv->node));
+ data |= BIT(0);
+ oct_csr_write(data, XCV_BATCH_CRD_RET(priv->node));
+ }
+
+ return 0;
+}
+
+static int bgx_port_set_xgmii_link(struct bgx_port_priv *priv,
+ struct port_status status)
+{
+ int rc = 0;
+ u64 data;
+
+ if (status.link) {
+ /* Link up */
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ data |= BIT(15);
+ oct_csr_write(data, BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+
+ /* BGX-22429 */
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) && priv->index) {
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, 0));
+ data |= BIT(15);
+ oct_csr_write(data, BGX_CMR_CONFIG(priv->node, priv->bgx, 0));
+ }
+
+ rc = bgx_port_xgmii_set_link_up(priv);
+ if (rc)
+ return rc;
+ rc = bgx_port_sgmii_set_link_speed(priv, status);
+ if (rc)
+ return rc;
+ if (priv->mode == PORT_MODE_RGMII)
+ rc = bgx_port_rgmii_set_link_speed(priv, status);
+ } else {
+ /* Link down */
+ if (priv->mode == PORT_MODE_RGMII) {
+ bgx_port_rgmii_set_link_down(priv);
+ rc = bgx_port_sgmii_set_link_speed(priv, status);
+ if (rc)
+ return rc;
+ rc = bgx_port_rgmii_set_link_speed(priv, status);
+ } else {
+ bgx_port_sgmii_set_link_down(priv);
+ }
+ }
+
+ return rc;
+}
+
+static struct port_status bgx_port_get_xaui_link(struct bgx_port_priv *priv)
+{
+ struct port_status status;
+ int lanes;
+ int speed;
+ u64 data;
+
+ status.link = 0;
+ status.duplex = DUPLEX_HALF;
+ status.speed = 0;
+
+ /* Get the link state */
+ data = oct_csr_read(BGX_SMU_TX_CTL(priv->node, priv->bgx, priv->index));
+ data &= GENMASK_ULL(5, 4);
+ if (!data) {
+ data = oct_csr_read(BGX_SMU_RX_CTL(priv->node, priv->bgx, priv->index));
+ data &= GENMASK_ULL(1, 0);
+ if (!data) {
+ data = oct_csr_read(BGX_SPU_STATUS1(priv->node, priv->bgx, priv->index));
+ if (data & BIT(2))
+ status.link = 1;
+ }
+ }
+
+ if (status.link) {
+ /* Always full duplex */
+ status.duplex = DUPLEX_FULL;
+
+ /* Speed */
+ speed = bgx_port_get_qlm_speed(priv, priv->qlm);
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ switch ((data >> 8) & 7) {
+ default:
+ case 1:
+ speed = (speed * 8 + 5) / 10;
+ lanes = 4;
+ break;
+ case 2:
+ speed = (speed * 8 + 5) / 10;
+ lanes = 2;
+ break;
+ case 3:
+ speed = (speed * 64 + 33) / 66;
+ lanes = 1;
+ break;
+ case 4:
+ if (speed == 6250)
+ speed = 6445;
+ speed = (speed * 64 + 33) / 66;
+ lanes = 4;
+ break;
+ }
+
+ speed *= lanes;
+ status.speed = speed;
+ }
+
+ return status;
+}
+
+static int bgx_port_init_xaui_an(struct bgx_port_priv *priv)
+{
+ u64 data;
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X)) {
+ data = oct_csr_read(BGX_SPU_INT(priv->node, priv->bgx, priv->index));
+ /* If autonegotiation is no good */
+ if (!(data & BIT(11))) {
+ data = BIT(12) | BIT(11) | BIT(10);
+ oct_csr_write(data, BGX_SPU_INT(priv->node, priv->bgx, priv->index));
+
+ data = oct_csr_read(BGX_SPU_AN_CONTROL(priv->node, priv->bgx, priv->index));
+ data |= BIT(9);
+ oct_csr_write(data, BGX_SPU_AN_CONTROL(priv->node, priv->bgx, priv->index));
+ return -1;
+ }
+ } else {
+ data = oct_csr_read(BGX_SPU_AN_STATUS(priv->node, priv->bgx, priv->index));
+ /* If autonegotiation hasn't completed */
+ if (!(data & BIT(5))) {
+ data = oct_csr_read(BGX_SPU_AN_CONTROL(priv->node, priv->bgx, priv->index));
+ data |= BIT(9);
+ oct_csr_write(data, BGX_SPU_AN_CONTROL(priv->node, priv->bgx, priv->index));
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static void bgx_port_xaui_start_training(struct bgx_port_priv *priv)
+{
+ u64 data;
+
+ data = BIT(14) | BIT(13);
+ oct_csr_write(data, BGX_SPU_INT(priv->node, priv->bgx, priv->index));
+
+ /* BGX-20968 */
+ oct_csr_write(0, BGX_SPU_BR_PMD_LP_CUP(priv->node, priv->bgx, priv->index));
+ oct_csr_write(0, BGX_SPU_BR_PMD_LD_CUP(priv->node, priv->bgx, priv->index));
+ oct_csr_write(0, BGX_SPU_BR_PMD_LD_REP(priv->node, priv->bgx, priv->index));
+ data = oct_csr_read(BGX_SPU_AN_CONTROL(priv->node, priv->bgx, priv->index));
+ data &= ~BIT(12);
+ oct_csr_write(data, BGX_SPU_AN_CONTROL(priv->node, priv->bgx, priv->index));
+ udelay(1);
+
+ data = oct_csr_read(BGX_SPU_BR_PMD_CONTROL(priv->node, priv->bgx, priv->index));
+ data |= BIT(1);
+ oct_csr_write(data, BGX_SPU_BR_PMD_CONTROL(priv->node, priv->bgx, priv->index));
+ udelay(1);
+
+ data = oct_csr_read(BGX_SPU_BR_PMD_CONTROL(priv->node, priv->bgx, priv->index));
+ data |= BIT(0);
+ oct_csr_write(data, BGX_SPU_BR_PMD_CONTROL(priv->node, priv->bgx, priv->index));
+}
+
+static int bgx_port_gser_27882(struct bgx_port_priv *priv)
+{
+ int timeout;
+ u64 addr;
+ u64 data;
+
+ timeout = 200;
+ do {
+ data = oct_csr_read(GSER_RX_EIE_DETSTS(priv->node, priv->qlm));
+ if (data & (1 << (priv->index + 8)))
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout)
+ return -1;
+
+ addr = GSER_LANE_PCS_CTLIFC_0(priv->node, priv->qlm, priv->index);
+ data = oct_csr_read(addr);
+ data |= BIT(12);
+ oct_csr_write(data, addr);
+
+ addr = GSER_LANE_PCS_CTLIFC_2(priv->node, priv->qlm, priv->index);
+ data = oct_csr_read(addr);
+ data |= BIT(7);
+ oct_csr_write(data, addr);
+
+ data = oct_csr_read(addr);
+ data |= BIT(15);
+ oct_csr_write(data, addr);
+
+ data = oct_csr_read(addr);
+ data &= ~BIT(7);
+ oct_csr_write(data, addr);
+
+ data = oct_csr_read(addr);
+ data |= BIT(15);
+ oct_csr_write(data, addr);
+
+ return 0;
+}
+
+static void bgx_port_xaui_restart_training(struct bgx_port_priv *priv)
+{
+ u64 data;
+
+ data = BIT(14) | BIT(13);
+ oct_csr_write(data, BGX_SPU_INT(priv->node, priv->bgx, priv->index));
+ usleep_range(1700, 2000);
+
+ /* BGX-20968 */
+ oct_csr_write(0, BGX_SPU_BR_PMD_LP_CUP(priv->node, priv->bgx, priv->index));
+ oct_csr_write(0, BGX_SPU_BR_PMD_LD_CUP(priv->node, priv->bgx, priv->index));
+ oct_csr_write(0, BGX_SPU_BR_PMD_LD_REP(priv->node, priv->bgx, priv->index));
+
+ /* Restart training */
+ data = oct_csr_read(BGX_SPU_BR_PMD_CONTROL(priv->node, priv->bgx, priv->index));
+ data |= BIT(0);
+ oct_csr_write(data, BGX_SPU_BR_PMD_CONTROL(priv->node, priv->bgx, priv->index));
+}
+
+static int bgx_port_get_max_qlm_lanes(int qlm)
+{
+ if (OCTEON_IS_MODEL(OCTEON_CN73XX))
+ return (qlm < 4) ? 4 : 2;
+ else if (OCTEON_IS_MODEL(OCTEON_CNF75XX))
+ return 2;
+ return 4;
+}
+
+static int bgx_port_qlm_rx_equalization(struct bgx_port_priv *priv,
+ int qlm, int lane)
+{
+ int max_lanes = bgx_port_get_max_qlm_lanes(qlm);
+ int lane_mask;
+ int timeout;
+ int rc = 0;
+ u64 lmode;
+ u64 addr;
+ u64 data;
+ int i;
+
+ lane_mask = lane == -1 ? ((1 << max_lanes) - 1) : (1 << lane);
+
+ /* Nothing to do for qlms in reset */
+ data = oct_csr_read(GSER_PHY_CTL(priv->node, qlm));
+ if (data & (BIT(0) | BIT(1)))
+ return -1;
+
+ for (i = 0; i < max_lanes; i++) {
+ if (!(i & lane_mask))
+ continue;
+
+ addr = GSER_LANE_LBERT_CFG(priv->node, qlm, i);
+ data = oct_csr_read(addr);
+ /* Rx equalization can't be completed while pattern matcher is
+ * enabled because it causes errors.
+ */
+ if (data & BIT(6))
+ return -1;
+ }
+
+ lmode = oct_csr_read(GSER_LANE_MODE(priv->node, qlm));
+ lmode &= 0xf;
+ addr = GSER_LANE_P_MODE_1(priv->node, qlm, lmode);
+ data = oct_csr_read(addr);
+ /* Don't complete rx equalization if in VMA manual mode */
+ if (data & BIT(14))
+ return 0;
+
+ /* Apply rx equalization for speed > 6250 */
+ if (bgx_port_get_qlm_speed(priv, qlm) < 6250)
+ return 0;
+
+ /* Wait until rx data is valid (CDRLOCK) */
+ timeout = 500;
+ addr = GSER_RX_EIE_DETSTS(priv->node, qlm);
+ do {
+ data = oct_csr_read(addr);
+ data >>= 8;
+ data &= lane_mask;
+ if (data == lane_mask)
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout) {
+ pr_debug("QLM%d:%d: CDRLOCK timeout\n", qlm, priv->node);
+ return -1;
+ }
+
+ bgx_port_gser_20075(priv, qlm, lane);
+
+ for (i = 0; i < max_lanes; i++) {
+ if (!(i & lane_mask))
+ continue;
+ /* Skip lane 3 on 78p1.x due to gser-20075. Handled above */
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) && i == 3)
+ continue;
+
+ /* Enable software control */
+ addr = GSER_BR_RX_CTL(priv->node, qlm, i);
+ data = oct_csr_read(addr);
+ data |= BIT(2);
+ oct_csr_write(data, addr);
+
+ /* Clear the completion flag */
+ addr = GSER_BR_RX_EER(priv->node, qlm, i);
+ data = oct_csr_read(addr);
+ data &= ~BIT(14);
+ data |= BIT(15);
+ oct_csr_write(data, addr);
+ }
+
+ /* Wait for rx equalization to complete */
+ for (i = 0; i < max_lanes; i++) {
+ if (!(i & lane_mask))
+ continue;
+
+ timeout = 250000;
+ addr = GSER_BR_RX_EER(priv->node, qlm, i);
+ do {
+ data = oct_csr_read(addr);
+ if (data & BIT(14))
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout) {
+ pr_debug("QLM%d:%d: RXT_ESV timeout\n",
+ qlm, priv->node);
+ rc = -1;
+ }
+
+ /* Switch back to hardware control */
+ addr = GSER_BR_RX_CTL(priv->node, qlm, i);
+ data = oct_csr_read(addr);
+ data &= ~BIT(2);
+ oct_csr_write(data, addr);
+ }
+
+ return rc;
+}
+
+static int bgx_port_xaui_equalization(struct bgx_port_priv *priv)
+{
+ u64 data;
+ int lane;
+
+ /* Nothing to do for loopback mode */
+ data = oct_csr_read(BGX_SPU_CONTROL1(priv->node, priv->bgx,
+ priv->index));
+ if (data & BIT(14))
+ return 0;
+
+ if (priv->mode == PORT_MODE_XAUI || priv->mode == PORT_MODE_XLAUI) {
+ if (bgx_port_qlm_rx_equalization(priv, priv->qlm, -1))
+ return -1;
+
+ /* BGX2 of 73xx uses 2 dlms */
+ if (OCTEON_IS_MODEL(OCTEON_CN73XX) && priv->bgx == 2) {
+ if (bgx_port_qlm_rx_equalization(priv, priv->qlm + 1, -1))
+ return -1;
+ }
+ } else if (priv->mode == PORT_MODE_RXAUI) {
+ /* Rxaui always uses 2 lanes */
+ if (bgx_port_qlm_rx_equalization(priv, priv->qlm, -1))
+ return -1;
+ } else if (priv->mode == PORT_MODE_XFI) {
+ lane = priv->index;
+ if ((OCTEON_IS_MODEL(OCTEON_CN73XX) && priv->qlm == 6) ||
+ (OCTEON_IS_MODEL(OCTEON_CNF75XX) && priv->qlm == 5))
+ lane -= 2;
+
+ if (bgx_port_qlm_rx_equalization(priv, priv->qlm, lane))
+ return -1;
+ }
+
+ return 0;
+}
+
+static int bgx_port_init_xaui_link(struct bgx_port_priv *priv)
+{
+ int use_training = 0;
+ int use_ber = 0;
+ int timeout;
+ int rc = 0;
+ u64 data;
+
+ if (priv->mode == PORT_MODE_10G_KR || priv->mode == PORT_MODE_40G_KR4)
+ use_training = 1;
+
+ if (!octeon_is_simulation() &&
+ (priv->mode == PORT_MODE_XFI || priv->mode == PORT_MODE_XLAUI ||
+ priv->mode == PORT_MODE_10G_KR || priv->mode == PORT_MODE_40G_KR4))
+ use_ber = 1;
+
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ data &= ~(BIT(14) | BIT(13));
+ oct_csr_write(data, BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+
+ data = oct_csr_read(BGX_SPU_MISC_CONTROL(priv->node, priv->bgx, priv->index));
+ data |= BIT(12);
+ oct_csr_write(data, BGX_SPU_MISC_CONTROL(priv->node, priv->bgx, priv->index));
+
+ if (!octeon_is_simulation()) {
+ data = oct_csr_read(BGX_SPU_AN_CONTROL(priv->node, priv->bgx, priv->index));
+ /* Restart autonegotiation */
+ if (data & BIT(12)) {
+ rc = bgx_port_init_xaui_an(priv);
+ if (rc)
+ return rc;
+ }
+
+ if (use_training) {
+ data = oct_csr_read(BGX_SPU_BR_PMD_CONTROL(priv->node, priv->bgx, priv->index));
+ /* Check if training is enabled */
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) &&
+ !(data & BIT(1))) {
+ bgx_port_xaui_start_training(priv);
+ return -1;
+ }
+
+ if (OCTEON_IS_MODEL(OCTEON_CN73XX) ||
+ OCTEON_IS_MODEL(OCTEON_CNF75XX) ||
+ OCTEON_IS_MODEL(OCTEON_CN78XX))
+ bgx_port_gser_27882(priv);
+
+ data = oct_csr_read(BGX_SPU_INT(priv->node, priv->bgx, priv->index));
+
+ /* Restart training if it failed */
+ if ((data & BIT(14)) &&
+ !OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X)) {
+ bgx_port_xaui_restart_training(priv);
+ return -1;
+ }
+
+ if (!(data & BIT(13))) {
+ pr_debug("Waiting for link training\n");
+ return -1;
+ }
+ } else {
+ bgx_port_xaui_equalization(priv);
+ }
+
+ /* Wait until the reset is complete */
+ timeout = 10000;
+ do {
+ data = oct_csr_read(BGX_SPU_CONTROL1(priv->node, priv->bgx, priv->index));
+ if (!(data & BIT(15)))
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout) {
+ pr_debug("BGX%d:%d:%d: Reset timeout\n", priv->bgx,
+ priv->index, priv->node);
+ return -1;
+ }
+
+ if (use_ber) {
+ timeout = 10000;
+ do {
+ data =
+ oct_csr_read(BGX_SPU_BR_STATUS1(priv->node, priv->bgx, priv->index));
+ if (data & BIT(0))
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout) {
+ pr_debug("BGX%d:%d:%d: BLK_LOCK timeout\n",
+ priv->bgx, priv->index, priv->node);
+ return -1;
+ }
+ } else {
+ timeout = 10000;
+ do {
+ data =
+ oct_csr_read(BGX_SPU_BX_STATUS(priv->node, priv->bgx, priv->index));
+ if (data & BIT(12))
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout) {
+ pr_debug("BGX%d:%d:%d: Lanes align timeout\n",
+ priv->bgx, priv->index, priv->node);
+ return -1;
+ }
+ }
+
+ if (use_ber) {
+ data = oct_csr_read(BGX_SPU_BR_STATUS2(priv->node, priv->bgx, priv->index));
+ data |= BIT(15);
+ oct_csr_write(data, BGX_SPU_BR_STATUS2(priv->node, priv->bgx, priv->index));
+ }
+
+ data = oct_csr_read(BGX_SPU_STATUS2(priv->node, priv->bgx, priv->index));
+ data |= BIT(10);
+ oct_csr_write(data, BGX_SPU_STATUS2(priv->node, priv->bgx, priv->index));
+
+ data = oct_csr_read(BGX_SPU_STATUS2(priv->node, priv->bgx, priv->index));
+ if (data & BIT(10)) {
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) &&
+ use_training)
+ bgx_port_xaui_restart_training(priv);
+ return -1;
+ }
+
+ /* Wait for mac rx to be ready */
+ timeout = 10000;
+ do {
+ data = oct_csr_read(BGX_SMU_RX_CTL(priv->node, priv->bgx, priv->index));
+ data &= GENMASK_ULL(1, 0);
+ if (!data)
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout) {
+ pr_debug("BGX%d:%d:%d: mac ready timeout\n",
+ priv->bgx, priv->index, priv->node);
+ return -1;
+ }
+
+ /* Wait for bgx rx to be idle */
+ timeout = 10000;
+ do {
+ data = oct_csr_read(BGX_SMU_CTRL(priv->node, priv->bgx, priv->index));
+ if (data & BIT(0))
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout) {
+ pr_debug("BGX%d:%d:%d: rx idle timeout\n",
+ priv->bgx, priv->index, priv->node);
+ return -1;
+ }
+
+ /* Wait for gmx tx to be idle */
+ timeout = 10000;
+ do {
+ data = oct_csr_read(BGX_SMU_CTRL(priv->node, priv->bgx, priv->index));
+ if (data & BIT(1))
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout) {
+ pr_debug("BGX%d:%d:%d: tx idle timeout\n",
+ priv->bgx, priv->index, priv->node);
+ return -1;
+ }
+
+ /* Check rcvflt is still be 0 */
+ data = oct_csr_read(BGX_SPU_STATUS2(priv->node, priv->bgx, priv->index));
+ if (data & BIT(10)) {
+ pr_debug("BGX%d:%d:%d: receive fault\n",
+ priv->bgx, priv->index, priv->node);
+ return -1;
+ }
+
+ /* Receive link is latching low. Force it high and verify it */
+ data = oct_csr_read(BGX_SPU_STATUS1(priv->node, priv->bgx, priv->index));
+ data |= BIT(2);
+ oct_csr_write(data, BGX_SPU_STATUS1(priv->node, priv->bgx, priv->index));
+ timeout = 10000;
+ do {
+ data = oct_csr_read(BGX_SPU_STATUS1(priv->node, priv->bgx, priv->index));
+ if (data & BIT(2))
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout) {
+ pr_debug("BGX%d:%d:%d: rx link down\n",
+ priv->bgx, priv->index, priv->node);
+ return -1;
+ }
+ }
+
+ if (use_ber) {
+ /* Read error counters to clear */
+ data = oct_csr_read(BGX_SPU_BR_BIP_ERR_CNT(priv->node, priv->bgx, priv->index));
+ data = oct_csr_read(BGX_SPU_BR_STATUS2(priv->node, priv->bgx, priv->index));
+
+ /* Verify latch lock is set */
+ if (!(data & BIT(15))) {
+ pr_debug("BGX%d:%d:%d: latch lock lost\n",
+ priv->bgx, priv->index, priv->node);
+ return -1;
+ }
+
+ /* LATCHED_BER is cleared by writing 1 to it */
+ if (data & BIT(14))
+ oct_csr_write(data, BGX_SPU_BR_STATUS2(priv->node, priv->bgx, priv->index));
+
+ usleep_range(1500, 2000);
+ data = oct_csr_read(BGX_SPU_BR_STATUS2(priv->node, priv->bgx, priv->index));
+ if (data & BIT(14)) {
+ pr_debug("BGX%d:%d:%d: BER test failed\n",
+ priv->bgx, priv->index, priv->node);
+ return -1;
+ }
+ }
+
+ /* Enable packet transmit and receive */
+ data = oct_csr_read(BGX_SPU_MISC_CONTROL(priv->node, priv->bgx, priv->index));
+ data &= ~BIT(12);
+ oct_csr_write(data, BGX_SPU_MISC_CONTROL(priv->node, priv->bgx, priv->index));
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ data |= BIT(14) | BIT(13);
+ oct_csr_write(data, BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+
+ return 0;
+}
+
+static int bgx_port_set_xaui_link(struct bgx_port_priv *priv,
+ struct port_status status)
+{
+ bool spu_link_ok = false;
+ bool smu_rx_ok = false;
+ bool smu_tx_ok = false;
+ int rc = 0;
+ u64 data;
+
+ /* Initialize hardware if link is up but hardware is not happy */
+ if (status.link) {
+ data = oct_csr_read(BGX_SMU_TX_CTL(priv->node, priv->bgx, priv->index));
+ data &= GENMASK_ULL(5, 4);
+ smu_tx_ok = data == 0;
+
+ data = oct_csr_read(BGX_SMU_RX_CTL(priv->node, priv->bgx, priv->index));
+ data &= GENMASK_ULL(1, 0);
+ smu_rx_ok = data == 0;
+
+ data = oct_csr_read(BGX_SPU_STATUS1(priv->node, priv->bgx, priv->index));
+ data &= BIT(2);
+ spu_link_ok = data == BIT(2);
+
+ if (!smu_tx_ok || !smu_rx_ok || !spu_link_ok)
+ rc = bgx_port_init_xaui_link(priv);
+ }
+
+ return rc;
+}
+
+static struct bgx_port_priv *bgx_port_netdev2priv(struct net_device *netdev)
+{
+ struct bgx_port_netdev_priv *nd_priv = netdev_priv(netdev);
+
+ return nd_priv->bgx_priv;
+}
+
+void bgx_port_set_netdev(struct device *dev, struct net_device *netdev)
+{
+ struct bgx_port_priv *priv = dev_get_drvdata(dev);
+
+ if (netdev) {
+ struct bgx_port_netdev_priv *nd_priv = netdev_priv(netdev);
+
+ nd_priv->bgx_priv = priv;
+ }
+
+ priv->netdev = netdev;
+}
+EXPORT_SYMBOL(bgx_port_set_netdev);
+
+int bgx_port_ethtool_get_link_ksettings(struct net_device *netdev,
+ struct ethtool_link_ksettings *cmd)
+{
+ struct bgx_port_priv *priv = bgx_port_netdev2priv(netdev);
+
+ if (priv->phydev) {
+ phy_ethtool_ksettings_get(priv->phydev, cmd);
+ return 0;
+ }
+ return -EINVAL;
+}
+EXPORT_SYMBOL(bgx_port_ethtool_get_link_ksettings);
+
+int bgx_port_ethtool_set_settings(struct net_device *netdev,
+ struct ethtool_cmd *cmd)
+{
+ struct bgx_port_priv *p = bgx_port_netdev2priv(netdev);
+
+ if (p->phydev)
+ return phy_ethtool_sset(p->phydev, cmd);
+
+ return -EOPNOTSUPP;
+}
+EXPORT_SYMBOL(bgx_port_ethtool_set_settings);
+
+int bgx_port_ethtool_nway_reset(struct net_device *netdev)
+{
+ struct bgx_port_priv *p = bgx_port_netdev2priv(netdev);
+
+ if (p->phydev)
+ return phy_start_aneg(p->phydev);
+
+ return -EOPNOTSUPP;
+}
+EXPORT_SYMBOL(bgx_port_ethtool_nway_reset);
+
+const u8 *bgx_port_get_mac(struct net_device *netdev)
+{
+ struct bgx_port_priv *priv = bgx_port_netdev2priv(netdev);
+
+ return priv->mac_addr;
+}
+EXPORT_SYMBOL(bgx_port_get_mac);
+
+int bgx_port_do_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+ struct bgx_port_priv *p = bgx_port_netdev2priv(netdev);
+
+ if (p->phydev)
+ return phy_mii_ioctl(p->phydev, ifr, cmd);
+ return -EOPNOTSUPP;
+}
+EXPORT_SYMBOL(bgx_port_do_ioctl);
+
+static void bgx_port_write_cam(struct bgx_port_priv *priv, int cam,
+ const u8 *mac)
+{
+ u64 m = 0;
+ int i;
+
+ if (mac) {
+ for (i = 0; i < 6; i++)
+ m |= (((u64)mac[i]) << ((5 - i) * 8));
+ m |= BIT(48);
+ }
+
+ m |= (u64)priv->index << 52;
+ oct_csr_write(m, BGX_CMR_RX_ADRX_CAM(priv->node, priv->bgx, priv->index * 8 + cam));
+}
+
+/* Set MAC address for the net_device that is attached. */
+void bgx_port_set_rx_filtering(struct net_device *netdev)
+{
+ struct bgx_port_priv *priv = bgx_port_netdev2priv(netdev);
+ struct netdev_hw_addr *ha;
+ int available_cam_entries;
+ int current_cam_entry;
+ u64 data;
+
+ available_cam_entries = 8;
+ data = 0;
+ data |= BIT(0); /* Accept all Broadcast*/
+
+ if ((netdev->flags & IFF_PROMISC) || netdev->uc.count > 7) {
+ data &= ~BIT(3); /* Reject CAM match */
+ available_cam_entries = 0;
+ } else {
+ /* One CAM entry for the primary address, leaves seven
+ * for the secondary addresses.
+ */
+ data |= BIT(3); /* Accept CAM match */
+ available_cam_entries = 7 - netdev->uc.count;
+ }
+
+ if (netdev->flags & IFF_PROMISC) {
+ data |= 1 << 1; /* Accept all Multicast */
+ } else {
+ if (netdev->flags & IFF_MULTICAST) {
+ if ((netdev->flags & IFF_ALLMULTI) ||
+ netdev_mc_count(netdev) > available_cam_entries)
+ data |= 1 << 1; /* Accept all Multicast */
+ else
+ data |= 2 << 1; /* Accept all Mcast via CAM */
+ }
+ }
+ current_cam_entry = 0;
+ if (data & BIT(3)) {
+ bgx_port_write_cam(priv, current_cam_entry, netdev->dev_addr);
+ current_cam_entry++;
+ netdev_for_each_uc_addr(ha, netdev) {
+ bgx_port_write_cam(priv, current_cam_entry, ha->addr);
+ current_cam_entry++;
+ }
+ }
+ if (((data & GENMASK_ULL(2, 1)) >> 1) == 2) {
+ /* Accept all Multicast via CAM */
+ netdev_for_each_mc_addr(ha, netdev) {
+ bgx_port_write_cam(priv, current_cam_entry, ha->addr);
+ current_cam_entry++;
+ }
+ }
+ while (current_cam_entry < 8) {
+ bgx_port_write_cam(priv, current_cam_entry, NULL);
+ current_cam_entry++;
+ }
+ oct_csr_write(data, BGX_CMR_RX_ADR_CTL(priv->node, priv->bgx,
+ priv->index));
+}
+EXPORT_SYMBOL(bgx_port_set_rx_filtering);
+
+static void bgx_port_adjust_link(struct net_device *netdev)
+{
+ struct bgx_port_priv *priv = bgx_port_netdev2priv(netdev);
+ bool link_changed = false;
+ unsigned int duplex;
+ unsigned int speed;
+ unsigned int link;
+
+ /* Called under the phydev->lock, no additional locking needed. */
+ if (!priv->phydev->link && priv->last_status.link)
+ link_changed = true;
+
+ if (priv->phydev->link &&
+ (priv->last_status.link != priv->phydev->link ||
+ priv->last_status.duplex != priv->phydev->duplex ||
+ priv->last_status.speed != priv->phydev->speed))
+ link_changed = true;
+
+ link = priv->phydev->link;
+ priv->last_status.link = priv->phydev->link;
+
+ speed = priv->phydev->speed;
+ priv->last_status.speed = priv->phydev->speed;
+
+ duplex = priv->phydev->duplex;
+ priv->last_status.duplex = priv->phydev->duplex;
+
+ if (link_changed) {
+ struct port_status status;
+
+ phy_print_status(priv->phydev);
+
+ status.link = link ? 1 : 0;
+ status.duplex = duplex;
+ status.speed = speed;
+ if (!link)
+ /* Let TX drain. FIXME check that it is drained. */
+ mdelay(50);
+ priv->set_link(priv, status);
+ }
+}
+
+static void bgx_port_check_state(struct work_struct *work)
+{
+ struct bgx_port_priv *priv;
+ struct port_status status;
+
+ priv = container_of(work, struct bgx_port_priv, dwork.work);
+
+ status = priv->get_link(priv);
+
+ if (!status.link &&
+ priv->mode != PORT_MODE_SGMII && priv->mode != PORT_MODE_RGMII)
+ bgx_port_init_xaui_link(priv);
+
+ /* Only used when there is no phy device, so we cannot use
+ * phy_print_status() here.
+ */
+ if (priv->last_status.link != status.link) {
+ priv->last_status.link = status.link;
+ if (status.link)
+ netdev_info(priv->netdev, "Link is up - %d/%s\n",
+ status.speed,
+ status.duplex == DUPLEX_FULL ? "Full" : "Half");
+ else
+ netdev_info(priv->netdev, "Link is down\n");
+ }
+
+ queue_delayed_work(check_state_wq, &priv->dwork, HZ);
+}
+
+int bgx_port_enable(struct net_device *netdev)
+{
+ struct bgx_port_priv *priv = bgx_port_netdev2priv(netdev);
+ struct port_status status;
+ bool dont_use_phy;
+ u64 data;
+
+ if (priv->mode == PORT_MODE_SGMII || priv->mode == PORT_MODE_RGMII) {
+ /* 1G */
+ data = oct_csr_read(BGX_GMP_GMI_TX_APPEND(priv->node, priv->bgx, priv->index));
+ data |= BIT(2) | BIT(1);
+ oct_csr_write(data, BGX_GMP_GMI_TX_APPEND(priv->node, priv->bgx, priv->index));
+
+ /* Packets are padded (without FCS) to MIN_SIZE + 1 in SGMII */
+ data = 60 - 1;
+ oct_csr_write(data, BGX_GMP_GMI_TX_MIN_PKT(priv->node, priv->bgx, priv->index));
+ } else {
+ /* 10G or higher */
+ data = oct_csr_read(BGX_SMU_TX_APPEND(priv->node, priv->bgx, priv->index));
+ data |= BIT(2) | BIT(1);
+ oct_csr_write(data, BGX_SMU_TX_APPEND(priv->node, priv->bgx, priv->index));
+
+ /* Packets are padded(with FCS) to MIN_SIZE in non-SGMII */
+ data = 60 + 4;
+ oct_csr_write(data, BGX_SMU_TX_MIN_PKT(priv->node, priv->bgx, priv->index));
+ }
+
+ switch (priv->mode) {
+ case PORT_MODE_XLAUI:
+ case PORT_MODE_XFI:
+ case PORT_MODE_10G_KR:
+ case PORT_MODE_40G_KR4:
+ dont_use_phy = true;
+ break;
+ default:
+ dont_use_phy = false;
+ break;
+ }
+
+ INIT_DELAYED_WORK(&priv->dwork, bgx_port_check_state);
+
+ if (!priv->phy_np || dont_use_phy) {
+ status = priv->get_link(priv);
+ priv->set_link(priv, status);
+ netif_carrier_on(netdev);
+
+ mutex_lock(&check_state_wq_mutex);
+ if (!check_state_wq) {
+ check_state_wq =
+ alloc_workqueue("check_state_wq", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
+ }
+ mutex_unlock(&check_state_wq_mutex);
+ if (!check_state_wq)
+ return -ENOMEM;
+
+ queue_delayed_work(check_state_wq, &priv->dwork, 0);
+
+ netdev_info(priv->netdev, "Link is not ready\n");
+
+ } else {
+ priv->phydev = of_phy_connect(netdev, priv->phy_np,
+ bgx_port_adjust_link, 0, priv->phy_mode);
+ if (!priv->phydev)
+ return -ENODEV;
+
+ netif_carrier_off(netdev);
+ phy_start_aneg(priv->phydev);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(bgx_port_enable);
+
+int bgx_port_disable(struct net_device *netdev)
+{
+ struct bgx_port_priv *priv = bgx_port_netdev2priv(netdev);
+ struct port_status status;
+
+ if (priv->phydev) {
+ phy_stop(priv->phydev);
+ phy_disconnect(priv->phydev);
+ }
+ priv->phydev = NULL;
+
+ netif_carrier_off(netdev);
+ memset(&status, 0, sizeof(status));
+ priv->last_status.link = 0;
+ priv->set_link(priv, status);
+ /* May have never been scheduled anywhere, unconditionally
+ * cancel in case it was. */
+ cancel_delayed_work_sync(&priv->dwork);
+
+ return 0;
+}
+EXPORT_SYMBOL(bgx_port_disable);
+
+int bgx_port_change_mtu(struct net_device *netdev, int new_mtu)
+{
+ struct bgx_port_priv *priv = bgx_port_netdev2priv(netdev);
+ int max_frame;
+
+ netdev->mtu = new_mtu;
+
+ max_frame = round_up(new_mtu + ETH_HLEN + ETH_FCS_LEN, 8);
+
+ if (priv->mode == PORT_MODE_SGMII || priv->mode == PORT_MODE_RGMII) {
+ /* 1G */
+ oct_csr_write(max_frame, BGX_GMP_GMI_RX_JABBER(priv->node, priv->bgx, priv->index));
+ } else {
+ /* 10G or higher */
+ oct_csr_write(max_frame, BGX_SMU_RX_JABBER(priv->node, priv->bgx, priv->index));
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(bgx_port_change_mtu);
+
+void bgx_port_mix_assert_reset(struct net_device *netdev, int mix, bool v)
+{
+ struct bgx_port_priv *priv = bgx_port_netdev2priv(netdev);
+ u64 mask = 1ull << (3 + (mix & 1));
+ u64 data;
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) && v) {
+ /* Need to disable the mix before resetting the bgx-mix
+ * interface as not doing so confuses the other already up
+ * lmacs.
+ */
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ data &= ~BIT(11);
+ oct_csr_write(data, BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ }
+
+ data = oct_csr_read(BGX_CMR_GLOBAL_CONFIG(priv->node, priv->bgx));
+ if (v)
+ data |= mask;
+ else
+ data &= ~mask;
+ oct_csr_write(data, BGX_CMR_GLOBAL_CONFIG(priv->node, priv->bgx));
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X) && !v) {
+ data = oct_csr_read(BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ data |= BIT(11);
+ oct_csr_write(data, BGX_CMR_CONFIG(priv->node, priv->bgx, priv->index));
+ }
+}
+EXPORT_SYMBOL(bgx_port_mix_assert_reset);
+
+static int bgx_port_probe(struct platform_device *pdev)
+{
+ struct bgx_port_priv *priv;
+ const __be32 *reg;
+ const u8 *mac;
+ int numa_node;
+ u32 index;
+ u64 addr;
+ int rc;
+
+ reg = of_get_property(pdev->dev.parent->of_node, "reg", NULL);
+ addr = of_translate_address(pdev->dev.parent->of_node, reg);
+ mac = of_get_mac_address(pdev->dev.of_node);
+
+ numa_node = bgx_node_to_numa_node(pdev->dev.parent->of_node);
+
+ rc = of_property_read_u32(pdev->dev.of_node, "reg", &index);
+ if (rc)
+ return -ENODEV;
+ priv = kzalloc_node(sizeof(*priv), GFP_KERNEL, numa_node);
+ if (!priv)
+ return -ENOMEM;
+ priv->phy_np = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
+ priv->phy_mode = of_get_phy_mode(pdev->dev.of_node);
+ /* If phy-mode absent, default to SGMII. */
+ if (priv->phy_mode < 0)
+ priv->phy_mode = PHY_INTERFACE_MODE_SGMII;
+
+ if (priv->phy_mode == PHY_INTERFACE_MODE_1000BASEX)
+ priv->mode_1000basex = true;
+
+ if (of_phy_is_fixed_link(pdev->dev.of_node))
+ priv->bgx_as_phy = true;
+
+ priv->node = numa_node;
+ priv->bgx = bgx_addr_to_interface(addr);
+ priv->index = index;
+ if (mac)
+ priv->mac_addr = mac;
+
+ priv->qlm = bgx_port_get_qlm(priv->node, priv->bgx, priv->index);
+ priv->mode = bgx_port_get_mode(priv->node, priv->bgx, priv->index);
+
+ switch (priv->mode) {
+ case PORT_MODE_SGMII:
+ if (priv->phy_np &&
+ priv->phy_mode != PHY_INTERFACE_MODE_SGMII)
+ dev_warn(&pdev->dev, "SGMII phy mode mismatch.\n");
+ goto set_link_functions;
+ case PORT_MODE_RGMII:
+ if (priv->phy_np && phy_interface_mode_is_rgmii(priv->phy_mode))
+ dev_warn(&pdev->dev, "RGMII phy mode mismatch.\n");
+set_link_functions:
+ priv->get_link = bgx_port_get_sgmii_link;
+ priv->set_link = bgx_port_set_xgmii_link;
+ break;
+ case PORT_MODE_XAUI:
+ case PORT_MODE_RXAUI:
+ case PORT_MODE_XLAUI:
+ case PORT_MODE_XFI:
+ case PORT_MODE_10G_KR:
+ case PORT_MODE_40G_KR4:
+ priv->get_link = bgx_port_get_xaui_link;
+ priv->set_link = bgx_port_set_xaui_link;
+ break;
+ default:
+ goto err;
+ }
+
+ dev_set_drvdata(&pdev->dev, priv);
+
+ bgx_port_init(priv);
+
+ dev_info(&pdev->dev, "Probed\n");
+ return 0;
+ err:
+ kfree(priv);
+ return rc;
+}
+
+static int bgx_port_remove(struct platform_device *pdev)
+{
+ struct bgx_port_priv *priv = dev_get_drvdata(&pdev->dev);
+
+ kfree(priv);
+ return 0;
+}
+
+static void bgx_port_shutdown(struct platform_device *pdev)
+{
+}
+
+static const struct of_device_id bgx_port_match[] = {
+ {
+ .compatible = "cavium,octeon-7890-bgx-port",
+ },
+ {
+ .compatible = "cavium,octeon-7360-xcv",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, bgx_port_match);
+
+static struct platform_driver bgx_port_driver = {
+ .probe = bgx_port_probe,
+ .remove = bgx_port_remove,
+ .shutdown = bgx_port_shutdown,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = KBUILD_MODNAME,
+ .of_match_table = bgx_port_match,
+ },
+};
+
+static int __init bgx_port_driver_init(void)
+{
+ int r;
+ int i;
+ int j;
+ int k;
+
+ for (i = 0; i < MAX_NODES; i++) {
+ for (j = 0; j < MAX_BGX_PER_NODE; j++) {
+ for (k = 0; k < MAX_LMAC_PER_BGX; k++)
+ lmac_pknd[i][j][k] = -1;
+ }
+ }
+
+ bgx_nexus_load();
+ r = platform_driver_register(&bgx_port_driver);
+ return r;
+}
+module_init(bgx_port_driver_init);
+
+static void __exit bgx_port_driver_exit(void)
+{
+ platform_driver_unregister(&bgx_port_driver);
+ if (check_state_wq)
+ destroy_workqueue(check_state_wq);
+}
+module_exit(bgx_port_driver_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Cavium, Inc. <support@caviumnetworks.com>");
+MODULE_DESCRIPTION("Cavium, Inc. BGX Ethernet MAC driver.");
diff --git a/drivers/net/ethernet/cavium/octeon/octeon3-core.c b/drivers/net/ethernet/cavium/octeon/octeon3-core.c
new file mode 100644
index 0000000..c0f6909
--- /dev/null
+++ b/drivers/net/ethernet/cavium/octeon/octeon3-core.c
@@ -0,0 +1,2079 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2017 Cavium, Inc.
+ *
+ * Core packet processing and initialization for the octeon3_ethernet
+ * packet processor. The packets are received, classified and initial
+ * input checks done by the PKI unit. Input queuing is done by the
+ * SSO. All output processing and hardware queuing is done in the
+ * PKO.
+ */
+#include <linux/ptp_clock_kernel.h>
+#include <linux/platform_device.h>
+#include <linux/etherdevice.h>
+#include <linux/timecounter.h>
+#include <linux/net_tstamp.h>
+#include <linux/interrupt.h>
+#include <linux/netdevice.h>
+#include <linux/if_vlan.h>
+#include <linux/kthread.h>
+#include <linux/rculist.h>
+#include <linux/rio_drv.h>
+#include <linux/rio_ids.h>
+#include <linux/atomic.h>
+#include <linux/module.h>
+#include <linux/wait.h>
+#include <linux/ipv6.h>
+#include <linux/ip.h>
+
+#include <asm/octeon/octeon.h>
+
+#include "octeon3.h"
+
+/* First buffer:
+ *
+ * +---SKB---------+
+ * | |
+ * | |
+ * +--+--*data |
+ * | | |
+ * | | |
+ * | +---------------+
+ * | /|\
+ * | |
+ * | |
+ * \|/ |
+ * WQE - 128 -+-----> +-------------+-------+ -+-
+ * | | *skb ----+ | |
+ * | | | |
+ * | | | |
+ * WQE_SKIP = 128 | | |
+ * | | | |
+ * | | | |
+ * | | | |
+ * | | | First Skip
+ * WQE -----+-----> +---------------------+ |
+ * | word 0 | |
+ * | word 1 | |
+ * | word 2 | |
+ * | word 3 | |
+ * | word 4 | |
+ * +---------------------+ -+-
+ * +----+- packet link |
+ * | | packet data |
+ * | | |
+ * | | |
+ * | | . |
+ * | | . |
+ * | | . |
+ * | +---------------------+
+ * |
+ * |
+ * Later buffers:|
+ * |
+ * |
+ * |
+ * |
+ * |
+ * | +---SKB---------+
+ * | | |
+ * | | |
+ * | +--+--*data |
+ * | | | |
+ * | | | |
+ * | | +---------------+
+ * | | /|\
+ * | | |
+ * | | |
+ * | \|/ |
+ * WQE - 128 ----+--> +-------------+-------+ -+-
+ * | | *skb ----+ | |
+ * | | | |
+ * | | | |
+ * | | | |
+ * | | | LATER_SKIP = 128
+ * | | | |
+ * | | | |
+ * | | | |
+ * | +---------------------+ -+-
+ * | | packet link |
+ * +--> | packet data |
+ * | |
+ * | |
+ * | . |
+ * | . |
+ * | . |
+ * +---------------------+
+ */
+
+#define MAX_TX_QUEUE_DEPTH 512
+#define SSO_INTSN_EXE 0x61
+#define MAX_RX_QUEUES 32
+
+#define SKB_PTR_OFFSET 0
+
+#define MAX_CORES 48
+#define FPA3_NUM_AURAS 1024
+
+#define USE_ASYNC_IOBDMA 1
+#define SCR_SCRATCH 0ull
+#define SSO_NO_WAIT 0ull
+#define DID_TAG_SWTAG 0x60ull
+#define IOBDMA_SENDSINGLE 0xffffffffffffa200ull
+
+/* Values for the value of wqe word2 [ERRLEV] */
+#define PKI_ERRLEV_LA 0x01
+
+/* Values for the value of wqe word2 [OPCODE] */
+#define PKI_OPCODE_NONE 0x00
+#define PKI_OPCODE_JABBER 0x02
+#define PKI_OPCODE_FCS 0x07
+
+/* Values for the layer type in the wqe */
+#define PKI_LTYPE_IP4 0x08
+#define PKI_LTYPE_IP6 0x0a
+#define PKI_LTYPE_TCP 0x10
+#define PKI_LTYPE_UDP 0x11
+#define PKI_LTYPE_SCTP 0x12
+
+/* Registers are accessed via xkphys */
+#define SSO_BASE 0x1670000000000ull
+#define SSO_ADDR(node) (SET_XKPHYS + NODE_OFFSET(node) + \
+ SSO_BASE)
+#define GRP_OFFSET(grp) ((grp) << 16)
+#define GRP_ADDR(n, g) (SSO_ADDR(n) + GRP_OFFSET(g))
+#define SSO_GRP_AQ_CNT(n, g) (GRP_ADDR(n, g) + 0x20000700)
+
+#define MIO_PTP_BASE 0x1070000000000ull
+#define MIO_PTP_ADDR(node) (SET_XKPHYS + NODE_OFFSET(node) + \
+ MIO_PTP_BASE)
+#define MIO_PTP_CLOCK_CFG(node) (MIO_PTP_ADDR(node) + 0xf00)
+#define MIO_PTP_CLOCK_HI(node) (MIO_PTP_ADDR(node) + 0xf10)
+#define MIO_PTP_CLOCK_COMP(node) (MIO_PTP_ADDR(node) + 0xf18)
+
+struct octeon3_ethernet;
+
+struct octeon3_rx {
+ struct napi_struct napi;
+ struct octeon3_ethernet *parent;
+ int rx_grp;
+ int rx_irq;
+ cpumask_t rx_affinity_hint;
+} ____cacheline_aligned_in_smp;
+
+struct octeon3_ethernet {
+ struct bgx_port_netdev_priv bgx_priv; /* Must be first element. */
+ struct list_head list;
+ struct net_device *netdev;
+ enum octeon3_mac_type mac_type;
+ struct octeon3_rx rx_cxt[MAX_RX_QUEUES];
+ struct ptp_clock_info ptp_info;
+ struct ptp_clock *ptp_clock;
+ struct cyclecounter cc;
+ struct timecounter tc;
+ spinlock_t ptp_lock; /* Serialize ptp clock adjustments */
+ int num_rx_cxt;
+ int pki_aura;
+ int pknd;
+ int pko_queue;
+ int node;
+ int interface;
+ int index;
+ int rx_buf_count;
+ int tx_complete_grp;
+ unsigned int rx_timestamp_hw:1;
+ unsigned int tx_timestamp_hw:1;
+ struct delayed_work stat_work;
+ spinlock_t stat_lock; /* Protects stats counters */
+ u64 last_packets;
+ u64 last_octets;
+ u64 last_dropped;
+ atomic64_t rx_packets;
+ atomic64_t rx_octets;
+ atomic64_t rx_dropped;
+ atomic64_t rx_errors;
+ atomic64_t rx_length_errors;
+ atomic64_t rx_crc_errors;
+ atomic64_t tx_packets;
+ atomic64_t tx_octets;
+ atomic64_t tx_dropped;
+ /* The following two fields need to be on a different cache line as
+ * they are updated by pko which invalidates the cache every time it
+ * updates them. The idea is to prevent other fields from being
+ * invalidated unnecessarily.
+ */
+ char cacheline_pad1[CVMX_CACHE_LINE_SIZE];
+ atomic64_t buffers_needed;
+ atomic64_t tx_backlog;
+ char cacheline_pad2[CVMX_CACHE_LINE_SIZE];
+};
+
+static DEFINE_MUTEX(octeon3_eth_init_mutex);
+
+struct octeon3_ethernet_node;
+
+struct octeon3_ethernet_worker {
+ wait_queue_head_t queue;
+ struct task_struct *task;
+ struct octeon3_ethernet_node *oen;
+ atomic_t kick;
+ int order;
+};
+
+struct octeon3_ethernet_node {
+ bool init_done;
+ int next_cpu_irq_affinity;
+ int node;
+ int pki_packet_pool;
+ int sso_pool;
+ int pko_pool;
+ void *sso_pool_stack;
+ void *pko_pool_stack;
+ void *pki_packet_pool_stack;
+ int sso_aura;
+ int pko_aura;
+ int tx_complete_grp;
+ int tx_irq;
+ cpumask_t tx_affinity_hint;
+ struct octeon3_ethernet_worker workers[8];
+ struct mutex device_list_lock; /* Protects the device list */
+ struct list_head device_list;
+ spinlock_t napi_alloc_lock; /* Protects napi allocations */
+};
+
+static int num_packet_buffers = 768;
+
+int ilk0_lanes = 1;
+int ilk1_lanes = 1;
+
+static int rx_queues = 1;
+static int packet_buffer_size = 2048;
+
+static struct octeon3_ethernet_node octeon3_eth_node[MAX_NODES];
+static struct kmem_cache *octeon3_eth_sso_pko_cache;
+
+/**
+ * scratch_read64() - Read a 64 bit value from the processor local
+ * scratchpad memory.
+ *
+ * @offset: Byte offset into scratch pad to read.
+ *
+ * Return: The value read.
+ */
+static inline u64 scratch_read64(u64 offset)
+{
+ /* Barriers never needed for this CPU-local memory. */
+ return *(u64 *)((long)SCRATCH_BASE + offset);
+}
+
+/**
+ * scratch_write64() - Write a 64 bit value to the processor local
+ * scratchpad memory.
+ *
+ * @offset: Byte offset into scratch pad to write
+ * @value: Value to write
+ */
+static inline void scratch_write64(u64 offset, u64 value)
+{
+ /* Barriers never needed for this CPU-local memory. */
+ *(u64 *)((long)SCRATCH_BASE + offset) = value;
+}
+
+static int get_pki_chan(int node, int interface, int index)
+{
+ int pki_chan;
+
+ pki_chan = node << 12;
+
+ if (OCTEON_IS_MODEL(OCTEON_CNF75XX) &&
+ (interface == 1 || interface == 2)) {
+ /* SRIO */
+ pki_chan |= 0x240 + (2 * (interface - 1)) + index;
+ } else {
+ /* BGX */
+ pki_chan |= 0x800 + (0x100 * interface) + (0x10 * index);
+ }
+
+ return pki_chan;
+}
+
+static int octeon3_eth_lgrp_to_ggrp(int node, int grp)
+{
+ return (node << 8) | grp;
+}
+
+static void octeon3_eth_gen_affinity(int node, cpumask_t *mask)
+{
+ int cpu;
+
+ do {
+ cpu = cpumask_next(octeon3_eth_node[node].next_cpu_irq_affinity, cpu_online_mask);
+ octeon3_eth_node[node].next_cpu_irq_affinity++;
+ if (cpu >= nr_cpu_ids) {
+ octeon3_eth_node[node].next_cpu_irq_affinity = -1;
+ continue;
+ }
+ } while (false);
+ cpumask_clear(mask);
+ cpumask_set_cpu(cpu, mask);
+}
+
+struct wr_ret {
+ void *work;
+ u16 grp;
+};
+
+static inline struct wr_ret octeon3_core_get_work_sync(int grp)
+{
+ u64 node = cvmx_get_node_num();
+ struct wr_ret r;
+ u64 response;
+ u64 addr;
+
+ /* See SSO_GET_WORK_LD_S for the address to read */
+ addr = 1ull << 63;
+ addr |= BIT(48);
+ addr |= DID_TAG_SWTAG << 40;
+ addr |= node << 36;
+ addr |= BIT(30);
+ addr |= BIT(29);
+ addr |= octeon3_eth_lgrp_to_ggrp(node, grp) << 4;
+ addr |= SSO_NO_WAIT << 3;
+ response = __raw_readq((void __iomem *)addr);
+
+ /* See SSO_GET_WORK_RTN_S for the format of the response */
+ r.grp = (response & GENMASK_ULL(57, 48)) >> 48;
+ if (response & BIT(63))
+ r.work = NULL;
+ else
+ r.work = phys_to_virt(response & GENMASK_ULL(41, 0));
+
+ return r;
+}
+
+/**
+ * octeon3_core_get_work_async() - Request work via a iobdma command.
+ * Doesn't wait for the response.
+ *
+ * @grp: Group to request work for.
+ */
+static inline void octeon3_core_get_work_async(unsigned int grp)
+{
+ u64 node = cvmx_get_node_num();
+ u64 data;
+
+ /* See SSO_GET_WORK_DMA_S for the command structure */
+ data = SCR_SCRATCH << 56;
+ data |= 1ull << 48;
+ data |= DID_TAG_SWTAG << 40;
+ data |= node << 36;
+ data |= 1ull << 30;
+ data |= 1ull << 29;
+ data |= octeon3_eth_lgrp_to_ggrp(node, grp) << 4;
+ data |= SSO_NO_WAIT << 3;
+
+ __raw_writeq(data, (void __iomem *)IOBDMA_SENDSINGLE);
+}
+
+/**
+ * octeon3_core_get_response_async() - Read the request work response. Must be
+ * called after calling
+ * octeon3_core_get_work_async().
+ *
+ * Return: Work queue entry.
+ */
+static inline struct wr_ret octeon3_core_get_response_async(void)
+{
+ struct wr_ret r;
+ u64 response;
+
+ CVMX_SYNCIOBDMA;
+ response = scratch_read64(SCR_SCRATCH);
+
+ /* See SSO_GET_WORK_RTN_S for the format of the response */
+ r.grp = (response & GENMASK_ULL(57, 48)) >> 48;
+ if (response & BIT(63))
+ r.work = NULL;
+ else
+ r.work = phys_to_virt(response & GENMASK_ULL(41, 0));
+
+ return r;
+}
+
+static void octeon3_eth_replenish_rx(struct octeon3_ethernet *priv, int count)
+{
+ struct sk_buff *skb;
+ int i;
+
+ for (i = 0; i < count; i++) {
+ void **buf;
+
+ skb = __alloc_skb(packet_buffer_size, GFP_ATOMIC, 0, priv->node);
+ if (!skb)
+ break;
+ buf = (void **)PTR_ALIGN(skb->head, 128);
+ buf[SKB_PTR_OFFSET] = skb;
+ octeon_fpa3_free(priv->node, priv->pki_aura, buf);
+ }
+}
+
+static bool octeon3_eth_tx_complete_runnable(struct octeon3_ethernet_worker *worker)
+{
+ return atomic_read(&worker->kick) != 0 || kthread_should_stop();
+}
+
+static int octeon3_eth_replenish_all(struct octeon3_ethernet_node *oen)
+{
+ struct octeon3_ethernet *priv;
+ int batch_size = 32;
+ int pending = 0;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(priv, &oen->device_list, list) {
+ int amount = atomic64_sub_if_positive(batch_size, &priv->buffers_needed);
+
+ if (amount >= 0) {
+ octeon3_eth_replenish_rx(priv, batch_size);
+ pending += amount;
+ }
+ }
+ rcu_read_unlock();
+ return pending;
+}
+
+static int octeon3_eth_tx_complete_hwtstamp(struct octeon3_ethernet *priv,
+ struct sk_buff *skb)
+{
+ struct skb_shared_hwtstamps shts;
+ u64 hwts;
+ u64 ns;
+
+ hwts = *((u64 *)(skb->cb) + 1);
+ ns = timecounter_cyc2time(&priv->tc, hwts);
+ memset(&shts, 0, sizeof(shts));
+ shts.hwtstamp = ns_to_ktime(ns);
+ skb_tstamp_tx(skb, &shts);
+
+ return 0;
+}
+
+static int octeon3_eth_tx_complete_worker(void *data)
+{
+ struct octeon3_ethernet_worker *worker = data;
+ struct octeon3_ethernet_node *oen;
+ int tx_complete_stop_thresh;
+ int backlog_stop_thresh;
+ int backlog;
+ u64 aq_cnt;
+ int order;
+ int i;
+
+ oen = worker->oen;
+ order = worker->order;
+ tx_complete_stop_thresh = order * 100;
+ backlog_stop_thresh = order == 0 ? 31 : order * 80;
+
+ while (!kthread_should_stop()) {
+ wait_event_interruptible(worker->queue, octeon3_eth_tx_complete_runnable(worker));
+ atomic_dec_if_positive(&worker->kick); /* clear the flag */
+
+ do {
+ backlog = octeon3_eth_replenish_all(oen);
+ for (i = 0; i < 100; i++) {
+ struct octeon3_ethernet *tx_priv;
+ struct net_device *tx_netdev;
+ struct sk_buff *skb;
+ struct wr_ret r;
+ void **work;
+
+ r = octeon3_core_get_work_sync(oen->tx_complete_grp);
+ work = r.work;
+ if (!work)
+ break;
+ tx_netdev = work[0];
+ tx_priv = netdev_priv(tx_netdev);
+ if (unlikely(netif_queue_stopped(tx_netdev)) &&
+ atomic64_read(&tx_priv->tx_backlog) < MAX_TX_QUEUE_DEPTH)
+ netif_wake_queue(tx_netdev);
+ skb = container_of((void *)work, struct sk_buff, cb);
+ if (unlikely(tx_priv->tx_timestamp_hw) &&
+ unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS))
+ octeon3_eth_tx_complete_hwtstamp(tx_priv, skb);
+ consume_skb(skb);
+ }
+
+ aq_cnt = oct_csr_read(SSO_GRP_AQ_CNT(oen->node, oen->tx_complete_grp));
+ aq_cnt &= GENMASK_ULL(32, 0);
+ if ((backlog > backlog_stop_thresh || aq_cnt > tx_complete_stop_thresh) &&
+ order < ARRAY_SIZE(oen->workers) - 1) {
+ atomic_set(&oen->workers[order + 1].kick, 1);
+ wake_up(&oen->workers[order + 1].queue);
+ }
+ } while (!need_resched() && (backlog > backlog_stop_thresh ||
+ aq_cnt > tx_complete_stop_thresh));
+
+ cond_resched();
+
+ if (!octeon3_eth_tx_complete_runnable(worker))
+ octeon3_sso_irq_set(oen->node, oen->tx_complete_grp, true);
+ }
+
+ return 0;
+}
+
+static irqreturn_t octeon3_eth_tx_handler(int irq, void *info)
+{
+ struct octeon3_ethernet_node *oen = info;
+ /* Disarm the irq. */
+ octeon3_sso_irq_set(oen->node, oen->tx_complete_grp, false);
+ atomic_set(&oen->workers[0].kick, 1);
+ wake_up(&oen->workers[0].queue);
+ return IRQ_HANDLED;
+}
+
+static int octeon3_eth_global_init(unsigned int node,
+ struct platform_device *pdev)
+{
+ struct octeon3_ethernet_node *oen;
+ unsigned int sso_intsn;
+ int rv = 0;
+ int i;
+
+ mutex_lock(&octeon3_eth_init_mutex);
+
+ oen = octeon3_eth_node + node;
+
+ if (oen->init_done)
+ goto done;
+
+ /* CN78XX-P1.0 cannot un-initialize PKO, so get a module
+ * reference to prevent it from being unloaded.
+ */
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_0))
+ if (!try_module_get(THIS_MODULE))
+ dev_err(&pdev->dev,
+ "ERROR: Could not obtain module reference for CN78XX-P1.0\n");
+
+ INIT_LIST_HEAD(&oen->device_list);
+ mutex_init(&oen->device_list_lock);
+ spin_lock_init(&oen->napi_alloc_lock);
+
+ oen->node = node;
+
+ octeon_fpa3_init(node);
+ rv = octeon_fpa3_pool_init(node, -1, &oen->sso_pool,
+ &oen->sso_pool_stack, 40960);
+ if (rv)
+ goto done;
+
+ rv = octeon_fpa3_pool_init(node, -1, &oen->pko_pool,
+ &oen->pko_pool_stack, 40960);
+ if (rv)
+ goto done;
+
+ rv = octeon_fpa3_pool_init(node, -1, &oen->pki_packet_pool,
+ &oen->pki_packet_pool_stack, 64 * num_packet_buffers);
+ if (rv)
+ goto done;
+
+ rv = octeon_fpa3_aura_init(node, oen->sso_pool, -1,
+ &oen->sso_aura, num_packet_buffers, 20480);
+ if (rv)
+ goto done;
+
+ rv = octeon_fpa3_aura_init(node, oen->pko_pool, -1,
+ &oen->pko_aura, num_packet_buffers, 20480);
+ if (rv)
+ goto done;
+
+ dev_info(&pdev->dev, "SSO:%d:%d, PKO:%d:%d\n", oen->sso_pool,
+ oen->sso_aura, oen->pko_pool, oen->pko_aura);
+
+ if (!octeon3_eth_sso_pko_cache) {
+ octeon3_eth_sso_pko_cache = kmem_cache_create("sso_pko", 4096, 128, 0, NULL);
+ if (!octeon3_eth_sso_pko_cache) {
+ rv = -ENOMEM;
+ goto done;
+ }
+ }
+
+ rv = octeon_fpa3_mem_fill(node, octeon3_eth_sso_pko_cache,
+ oen->sso_aura, 1024);
+ if (rv)
+ goto done;
+
+ rv = octeon_fpa3_mem_fill(node, octeon3_eth_sso_pko_cache,
+ oen->pko_aura, 1024);
+ if (rv)
+ goto done;
+
+ rv = octeon3_sso_init(node, oen->sso_aura);
+ if (rv)
+ goto done;
+
+ oen->tx_complete_grp = octeon3_sso_alloc_grp(node, -1);
+ if (oen->tx_complete_grp < 0)
+ goto done;
+
+ sso_intsn = SSO_INTSN_EXE << 12 | oen->tx_complete_grp;
+ oen->tx_irq = irq_create_mapping(NULL, sso_intsn);
+ if (!oen->tx_irq) {
+ rv = -ENODEV;
+ goto done;
+ }
+
+ rv = octeon3_pko_init_global(node, oen->pko_aura);
+ if (rv) {
+ rv = -ENODEV;
+ goto done;
+ }
+
+ octeon3_pki_vlan_init(node);
+ octeon3_pki_cluster_init(node, pdev);
+ octeon3_pki_ltype_init(node);
+ octeon3_pki_enable(node);
+
+ for (i = 0; i < ARRAY_SIZE(oen->workers); i++) {
+ oen->workers[i].oen = oen;
+ init_waitqueue_head(&oen->workers[i].queue);
+ oen->workers[i].order = i;
+ }
+ for (i = 0; i < ARRAY_SIZE(oen->workers); i++) {
+ oen->workers[i].task = kthread_create_on_node(octeon3_eth_tx_complete_worker,
+ oen->workers + i, node,
+ "oct3_eth/%d:%d", node, i);
+ if (IS_ERR(oen->workers[i].task)) {
+ rv = PTR_ERR(oen->workers[i].task);
+ goto done;
+ } else {
+#ifdef CONFIG_NUMA
+ set_cpus_allowed_ptr(oen->workers[i].task, cpumask_of_node(node));
+#endif
+ wake_up_process(oen->workers[i].task);
+ }
+ }
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X))
+ octeon3_sso_pass1_limit(node, oen->tx_complete_grp);
+
+ rv = request_irq(oen->tx_irq, octeon3_eth_tx_handler,
+ IRQ_TYPE_EDGE_RISING, "oct3_eth_tx_done", oen);
+ if (rv)
+ goto done;
+ octeon3_eth_gen_affinity(node, &oen->tx_affinity_hint);
+ irq_set_affinity_hint(oen->tx_irq, &oen->tx_affinity_hint);
+
+ octeon3_sso_irq_set(node, oen->tx_complete_grp, true);
+
+ oen->init_done = true;
+done:
+ mutex_unlock(&octeon3_eth_init_mutex);
+ return rv;
+}
+
+static struct sk_buff *octeon3_eth_work_to_skb(void *w)
+{
+ struct sk_buff *skb;
+ void **f = w;
+
+ skb = f[-16];
+ return skb;
+}
+
+/* Receive one packet.
+ * returns the number of RX buffers consumed.
+ */
+static int octeon3_eth_rx_one(struct octeon3_rx *rx,
+ bool is_async, bool req_next)
+{
+ struct octeon3_ethernet *priv = rx->parent;
+ union buf_ptr packet_ptr;
+ unsigned int packet_len;
+ struct sk_buff *skb;
+ int len_remaining;
+ struct wqe *work;
+ struct wr_ret r;
+ int segments;
+ u8 *data;
+ int ret;
+
+ if (is_async)
+ r = octeon3_core_get_response_async();
+ else
+ r = octeon3_core_get_work_sync(rx->rx_grp);
+ work = r.work;
+ if (!work)
+ return 0;
+
+ /* Request the next work so it'll be ready when we need it */
+ if (is_async && req_next)
+ octeon3_core_get_work_async(rx->rx_grp);
+
+ skb = octeon3_eth_work_to_skb(work);
+
+ segments = work->word0.bufs;
+ ret = segments;
+ packet_ptr = work->packet_ptr;
+ if (unlikely(work->word2.err_level <= PKI_ERRLEV_LA &&
+ work->word2.err_code != PKI_OPCODE_NONE)) {
+ atomic64_inc(&priv->rx_errors);
+ switch (work->word2.err_code) {
+ case PKI_OPCODE_JABBER:
+ atomic64_inc(&priv->rx_length_errors);
+ break;
+ case PKI_OPCODE_FCS:
+ atomic64_inc(&priv->rx_crc_errors);
+ break;
+ }
+ data = phys_to_virt(packet_ptr.addr);
+ for (;;) {
+ dev_kfree_skb_any(skb);
+ segments--;
+ if (segments <= 0)
+ break;
+ packet_ptr.u64 = *(u64 *)(data - 8);
+#ifndef __LITTLE_ENDIAN
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X)) {
+ /* PKI_BUFLINK_S's are endian-swapped */
+ packet_ptr.u64 = swab64(packet_ptr.u64);
+ }
+#endif
+ data = phys_to_virt(packet_ptr.addr);
+ skb = octeon3_eth_work_to_skb((void *)round_down((unsigned long)data, 128ull));
+ }
+ goto out;
+ }
+
+ packet_len = work->word1.len;
+ data = phys_to_virt(packet_ptr.addr);
+ skb->data = data;
+ skb->len = packet_len;
+ len_remaining = packet_len;
+ if (segments == 1) {
+ /* Strip the ethernet fcs */
+ skb->len -= 4;
+ skb_set_tail_pointer(skb, skb->len);
+ } else {
+ struct sk_buff *current_skb = skb;
+ struct sk_buff *next_skb = NULL;
+ unsigned int segment_size;
+ bool first_frag = true;
+
+ skb_frag_list_init(skb);
+ for (;;) {
+ segment_size = (segments == 1) ? len_remaining : packet_ptr.size;
+ len_remaining -= segment_size;
+ if (!first_frag) {
+ current_skb->len = segment_size;
+ skb->data_len += segment_size;
+ skb->truesize += current_skb->truesize;
+ }
+ skb_set_tail_pointer(current_skb, segment_size);
+ segments--;
+ if (segments == 0)
+ break;
+ packet_ptr.u64 = *(u64 *)(data - 8);
+#ifndef __LITTLE_ENDIAN
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X)) {
+ /* PKI_BUFLINK_S's are endian-swapped */
+ packet_ptr.u64 = swab64(packet_ptr.u64);
+ }
+#endif
+ data = phys_to_virt(packet_ptr.addr);
+ next_skb = octeon3_eth_work_to_skb((void *)round_down((unsigned long)data, 128ull));
+ if (first_frag) {
+ next_skb->next = skb_shinfo(current_skb)->frag_list;
+ skb_shinfo(current_skb)->frag_list = next_skb;
+ } else {
+ current_skb->next = next_skb;
+ next_skb->next = NULL;
+ }
+ current_skb = next_skb;
+ first_frag = false;
+ current_skb->data = data;
+ }
+
+ /* Strip the ethernet fcs */
+ pskb_trim(skb, skb->len - 4);
+ }
+
+ skb_checksum_none_assert(skb);
+ if (unlikely(priv->rx_timestamp_hw)) {
+ /* The first 8 bytes are the timestamp */
+ u64 hwts = *(u64 *)skb->data;
+ u64 ns;
+ struct skb_shared_hwtstamps *shts;
+
+ ns = timecounter_cyc2time(&priv->tc, hwts);
+ shts = skb_hwtstamps(skb);
+ memset(shts, 0, sizeof(*shts));
+ shts->hwtstamp = ns_to_ktime(ns);
+ __skb_pull(skb, 8);
+ }
+
+ skb->protocol = eth_type_trans(skb, priv->netdev);
+ skb->dev = priv->netdev;
+ if (priv->netdev->features & NETIF_F_RXCSUM) {
+ if ((work->word2.lc_hdr_type == PKI_LTYPE_IP4 ||
+ work->word2.lc_hdr_type == PKI_LTYPE_IP6) &&
+ (work->word2.lf_hdr_type == PKI_LTYPE_TCP ||
+ work->word2.lf_hdr_type == PKI_LTYPE_UDP ||
+ work->word2.lf_hdr_type == PKI_LTYPE_SCTP))
+ if (work->word2.err_code == 0)
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ }
+
+ napi_gro_receive(&rx->napi, skb);
+out:
+ return ret;
+}
+
+static int octeon3_eth_napi(struct napi_struct *napi, int budget)
+{
+ struct octeon3_ethernet *priv;
+ struct octeon3_rx *cxt;
+ int rx_count = 0;
+ u64 old_scratch;
+ int n_bufs = 0;
+ u64 aq_cnt;
+ int n = 0;
+
+ cxt = container_of(napi, struct octeon3_rx, napi);
+ priv = cxt->parent;
+
+ /* Get the amount of work pending */
+ aq_cnt = oct_csr_read(SSO_GRP_AQ_CNT(priv->node, cxt->rx_grp));
+ aq_cnt &= GENMASK_ULL(32, 0);
+
+ if (likely(USE_ASYNC_IOBDMA)) {
+ /* Save scratch in case userspace is using it */
+ CVMX_SYNCIOBDMA;
+ old_scratch = scratch_read64(SCR_SCRATCH);
+
+ octeon3_core_get_work_async(cxt->rx_grp);
+ }
+
+ while (rx_count < budget) {
+ n = 0;
+
+ if (likely(USE_ASYNC_IOBDMA)) {
+ bool req_next = rx_count < (budget - 1) ? true : false;
+
+ n = octeon3_eth_rx_one(cxt, true, req_next);
+ } else {
+ n = octeon3_eth_rx_one(cxt, false, false);
+ }
+
+ if (n == 0)
+ break;
+
+ n_bufs += n;
+ rx_count++;
+ }
+
+ /* Wake up worker threads */
+ n_bufs = atomic64_add_return(n_bufs, &priv->buffers_needed);
+ if (n_bufs >= 32) {
+ struct octeon3_ethernet_node *oen;
+
+ oen = octeon3_eth_node + priv->node;
+ atomic_set(&oen->workers[0].kick, 1);
+ wake_up(&oen->workers[0].queue);
+ }
+
+ /* Stop the thread when no work is pending */
+ if (rx_count < budget) {
+ napi_complete(napi);
+ octeon3_sso_irq_set(cxt->parent->node, cxt->rx_grp, true);
+ }
+
+ if (likely(USE_ASYNC_IOBDMA)) {
+ /* Restore the scratch area */
+ scratch_write64(SCR_SCRATCH, old_scratch);
+ }
+
+ return rx_count;
+}
+
+#undef BROKEN_SIMULATOR_CSUM
+
+static void ethtool_get_drvinfo(struct net_device *netdev,
+ struct ethtool_drvinfo *info)
+{
+ strlcpy(info->driver, "octeon3-ethernet", sizeof(info->driver));
+ strlcpy(info->version, "1.0", sizeof(info->version));
+ strlcpy(info->bus_info,
+ dev_name(netdev->dev.parent), sizeof(info->bus_info));
+}
+
+static int ethtool_get_ts_info(struct net_device *ndev,
+ struct ethtool_ts_info *info)
+{
+ struct octeon3_ethernet *priv = netdev_priv(ndev);
+
+ info->so_timestamping =
+ SOF_TIMESTAMPING_TX_HARDWARE |
+ SOF_TIMESTAMPING_RX_HARDWARE |
+ SOF_TIMESTAMPING_RAW_HARDWARE;
+
+ if (priv->ptp_clock)
+ info->phc_index = ptp_clock_index(priv->ptp_clock);
+ else
+ info->phc_index = -1;
+
+ info->tx_types = (1 << HWTSTAMP_TX_OFF) | (1 << HWTSTAMP_TX_ON);
+
+ info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) | (1 << HWTSTAMP_FILTER_ALL);
+
+ return 0;
+}
+
+static const struct ethtool_ops octeon3_ethtool_ops = {
+ .get_drvinfo = ethtool_get_drvinfo,
+ .get_link_ksettings = bgx_port_ethtool_get_link_ksettings,
+ .set_settings = bgx_port_ethtool_set_settings,
+ .nway_reset = bgx_port_ethtool_nway_reset,
+ .get_link = ethtool_op_get_link,
+ .get_ts_info = ethtool_get_ts_info,
+};
+
+static int octeon3_eth_common_ndo_init(struct net_device *netdev,
+ int extra_skip)
+{
+ struct octeon3_ethernet_node *oen;
+ int base_rx_grp[MAX_RX_QUEUES];
+ struct octeon3_ethernet *priv;
+ int pki_chan;
+ int aura;
+ int dq;
+ int i;
+ int r;
+
+ priv = netdev_priv(netdev);
+ oen = octeon3_eth_node + priv->node;
+
+ netif_carrier_off(netdev);
+
+ netdev->features |=
+#ifndef BROKEN_SIMULATOR_CSUM
+ NETIF_F_IP_CSUM |
+ NETIF_F_IPV6_CSUM |
+#endif
+ NETIF_F_SG |
+ NETIF_F_FRAGLIST |
+ NETIF_F_RXCSUM |
+ NETIF_F_LLTX;
+
+ if (!OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X))
+ netdev->features |= NETIF_F_SCTP_CRC;
+
+ netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
+
+ /* Set user changeable settings */
+ netdev->hw_features = netdev->features;
+
+ priv->rx_buf_count = num_packet_buffers;
+
+ pki_chan = get_pki_chan(priv->node, priv->interface, priv->index);
+
+ dq = octeon3_pko_interface_init(priv->node, priv->interface,
+ priv->index, priv->mac_type, pki_chan);
+ if (dq < 0) {
+ dev_err(netdev->dev.parent, "Failed to initialize pko\n");
+ return -ENODEV;
+ }
+
+ r = octeon3_pko_activate_dq(priv->node, dq, 1);
+ if (r < 0) {
+ dev_err(netdev->dev.parent, "Failed to activate dq\n");
+ return -ENODEV;
+ }
+
+ priv->pko_queue = dq;
+ octeon_fpa3_aura_init(priv->node, oen->pki_packet_pool, -1, &aura,
+ num_packet_buffers, num_packet_buffers * 2);
+ priv->pki_aura = aura;
+
+ r = octeon3_sso_alloc_grp_range(priv->node,
+ -1, rx_queues, false, base_rx_grp);
+ if (r) {
+ dev_err(netdev->dev.parent, "Failed to allocated SSO group\n");
+ return -ENODEV;
+ }
+ for (i = 0; i < rx_queues; i++) {
+ priv->rx_cxt[i].rx_grp = base_rx_grp[i];
+ priv->rx_cxt[i].parent = priv;
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X))
+ octeon3_sso_pass1_limit(priv->node, priv->rx_cxt[i].rx_grp);
+ }
+ priv->num_rx_cxt = rx_queues;
+
+ priv->tx_complete_grp = oen->tx_complete_grp;
+ dev_info(netdev->dev.parent,
+ "rx sso grp:%d..%d aura:%d pknd:%d pko_queue:%d\n",
+ *base_rx_grp, *(base_rx_grp + priv->num_rx_cxt - 1),
+ priv->pki_aura, priv->pknd, priv->pko_queue);
+
+ octeon3_pki_port_init(priv->node, priv->pki_aura, *base_rx_grp,
+ extra_skip, (packet_buffer_size - 128),
+ priv->pknd, priv->num_rx_cxt);
+
+ priv->last_packets = 0;
+ priv->last_octets = 0;
+ priv->last_dropped = 0;
+
+ /* Register ethtool methods */
+ netdev->ethtool_ops = &octeon3_ethtool_ops;
+
+ return 0;
+}
+
+static int octeon3_eth_bgx_ndo_init(struct net_device *netdev)
+{
+ struct octeon3_ethernet *priv = netdev_priv(netdev);
+ const u8 *mac;
+ int r;
+
+ priv->pknd = bgx_port_get_pknd(priv->node, priv->interface, priv->index);
+ octeon3_eth_common_ndo_init(netdev, 0);
+
+ /* Padding and FCS are done in BGX */
+ r = octeon3_pko_set_mac_options(priv->node, priv->interface, priv->index,
+ priv->mac_type, false, false, 0);
+ if (r)
+ return r;
+
+ mac = bgx_port_get_mac(netdev);
+ if (mac && is_valid_ether_addr(mac)) {
+ memcpy(netdev->dev_addr, mac, ETH_ALEN);
+ netdev->addr_assign_type &= ~NET_ADDR_RANDOM;
+ } else {
+ eth_hw_addr_random(netdev);
+ }
+
+ bgx_port_set_rx_filtering(netdev);
+ bgx_port_change_mtu(netdev, netdev->mtu);
+
+ return 0;
+}
+
+static void octeon3_eth_ndo_uninit(struct net_device *netdev)
+{
+ struct octeon3_ethernet *priv = netdev_priv(netdev);
+ int grp[MAX_RX_QUEUES];
+ int i;
+
+ /* Shutdwon pki for this interface */
+ octeon3_pki_port_shutdown(priv->node, priv->pknd);
+ octeon_fpa3_release_aura(priv->node, priv->pki_aura);
+
+ /* Shutdown pko for this interface */
+ octeon3_pko_interface_uninit(priv->node, &priv->pko_queue, 1);
+
+ /* Free the receive contexts sso groups */
+ for (i = 0; i < rx_queues; i++)
+ grp[i] = priv->rx_cxt[i].rx_grp;
+ octeon3_sso_free_grp_range(priv->node, grp, rx_queues);
+}
+
+static void octeon3_eth_ndo_get_stats64(struct net_device *netdev,
+ struct rtnl_link_stats64 *s)
+{
+ struct octeon3_ethernet *priv = netdev_priv(netdev);
+ u64 delta_packets;
+ u64 delta_dropped;
+ u64 delta_octets;
+ u64 dropped;
+ u64 packets;
+ u64 octets;
+
+ /* The 48 bits counters may wrap around. We need to call this
+ * function periodically, to catch any wrap. Locking is
+ * needed to ensure consistency of the RMW operation on the
+ * last_{packets, octets, dropped} variables if two or more
+ * threads enter here at the same time.
+ */
+ spin_lock(&priv->stat_lock);
+
+ octeon3_pki_get_stats(priv->node, priv->pknd, &packets, &octets, &dropped);
+
+ delta_packets = (packets - priv->last_packets) & ((1ull << 48) - 1);
+ delta_octets = (octets - priv->last_octets) & ((1ull << 48) - 1);
+ delta_dropped = (dropped - priv->last_dropped) & ((1ull << 48) - 1);
+
+ priv->last_packets = packets;
+ priv->last_octets = octets;
+ priv->last_dropped = dropped;
+
+ spin_unlock(&priv->stat_lock);
+
+ s->rx_packets = atomic64_add_return_relaxed(delta_packets, &priv->rx_packets);
+ s->rx_bytes = atomic64_add_return_relaxed(delta_octets, &priv->rx_octets);
+ s->rx_dropped = atomic64_add_return_relaxed(delta_dropped, &priv->rx_dropped);
+
+ s->rx_errors = atomic64_read(&priv->rx_errors);
+ s->rx_length_errors = atomic64_read(&priv->rx_length_errors);
+ s->rx_crc_errors = atomic64_read(&priv->rx_crc_errors);
+
+ s->tx_packets = atomic64_read(&priv->tx_packets);
+ s->tx_bytes = atomic64_read(&priv->tx_octets);
+ s->tx_dropped = atomic64_read(&priv->tx_dropped);
+}
+
+static void octeon3_eth_stat_poll(struct work_struct *work)
+{
+ struct octeon3_ethernet *priv;
+ struct rtnl_link_stats64 s;
+
+ priv = container_of(work, struct octeon3_ethernet, stat_work.work);
+ octeon3_eth_ndo_get_stats64(priv->netdev, &s);
+
+ /* Poll every 60s */
+ mod_delayed_work(system_unbound_wq,
+ &priv->stat_work, msecs_to_jiffies(60000));
+}
+
+static irqreturn_t octeon3_eth_rx_handler(int irq, void *info)
+{
+ struct octeon3_rx *rx = info;
+
+ /* Disarm the irq. */
+ octeon3_sso_irq_set(rx->parent->node, rx->rx_grp, false);
+
+ napi_schedule(&rx->napi);
+ return IRQ_HANDLED;
+}
+
+static int octeon3_eth_common_ndo_open(struct net_device *netdev)
+{
+ struct octeon3_ethernet *priv = netdev_priv(netdev);
+ struct octeon3_rx *rx;
+ int i;
+ int r;
+
+ for (i = 0; i < priv->num_rx_cxt; i++) {
+ unsigned int sso_intsn;
+
+ rx = priv->rx_cxt + i;
+ sso_intsn = SSO_INTSN_EXE << 12 | rx->rx_grp;
+
+ rx->rx_irq = irq_create_mapping(NULL, sso_intsn);
+ if (!rx->rx_irq) {
+ netdev_err(netdev,
+ "ERROR: Couldn't map hwirq: %x\n", sso_intsn);
+ r = -EINVAL;
+ goto err1;
+ }
+ r = request_irq(rx->rx_irq, octeon3_eth_rx_handler,
+ IRQ_TYPE_EDGE_RISING, netdev_name(netdev), rx);
+ if (r) {
+ netdev_err(netdev, "ERROR: Couldn't request irq: %d\n",
+ rx->rx_irq);
+ r = -ENOMEM;
+ goto err2;
+ }
+
+ octeon3_eth_gen_affinity(priv->node, &rx->rx_affinity_hint);
+ irq_set_affinity_hint(rx->rx_irq, &rx->rx_affinity_hint);
+
+ netif_napi_add(priv->netdev, &rx->napi,
+ octeon3_eth_napi, NAPI_POLL_WEIGHT);
+ napi_enable(&rx->napi);
+
+ /* Arm the irq. */
+ octeon3_sso_irq_set(priv->node, rx->rx_grp, true);
+ }
+ octeon3_eth_replenish_rx(priv, priv->rx_buf_count);
+
+ /* Start stat polling */
+ octeon3_eth_stat_poll(&priv->stat_work.work);
+
+ return 0;
+
+err2:
+ irq_dispose_mapping(rx->rx_irq);
+err1:
+ for (i--; i >= 0; i--) {
+ rx = priv->rx_cxt + i;
+ free_irq(rx->rx_irq, rx);
+ irq_dispose_mapping(rx->rx_irq);
+ napi_disable(&rx->napi);
+ netif_napi_del(&rx->napi);
+ }
+
+ return r;
+}
+
+static int octeon3_eth_bgx_ndo_open(struct net_device *netdev)
+{
+ int rc;
+
+ rc = octeon3_eth_common_ndo_open(netdev);
+ if (rc == 0)
+ rc = bgx_port_enable(netdev);
+
+ return rc;
+}
+
+static int octeon3_eth_common_ndo_stop(struct net_device *netdev)
+{
+ struct octeon3_ethernet *priv = netdev_priv(netdev);
+ struct octeon3_rx *rx;
+ struct sk_buff *skb;
+ void **w;
+ int i;
+
+ cancel_delayed_work_sync(&priv->stat_work);
+
+ /* Allow enough time for ingress in transit packets to be drained */
+ msleep(20);
+
+ /* Wait until sso has no more work for this interface */
+ for (i = 0; i < priv->num_rx_cxt; i++) {
+ rx = priv->rx_cxt + i;
+ while (oct_csr_read(SSO_GRP_AQ_CNT(priv->node, rx->rx_grp)))
+ msleep(20);
+ }
+
+ /* Free the irq and napi context for each rx context */
+ for (i = 0; i < priv->num_rx_cxt; i++) {
+ rx = priv->rx_cxt + i;
+ octeon3_sso_irq_set(priv->node, rx->rx_grp, false);
+ irq_set_affinity_hint(rx->rx_irq, NULL);
+ free_irq(rx->rx_irq, rx);
+ irq_dispose_mapping(rx->rx_irq);
+ rx->rx_irq = 0;
+ napi_disable(&rx->napi);
+ netif_napi_del(&rx->napi);
+ }
+
+ /* Free the packet buffers */
+ for (;;) {
+ w = octeon_fpa3_alloc(priv->node, priv->pki_aura);
+ if (!w)
+ break;
+ skb = w[0];
+ dev_kfree_skb(skb);
+ }
+
+ return 0;
+}
+
+static int octeon3_eth_bgx_ndo_stop(struct net_device *netdev)
+{
+ int r;
+
+ r = bgx_port_disable(netdev);
+ if (r)
+ return r;
+
+ return octeon3_eth_common_ndo_stop(netdev);
+}
+
+static inline u64 build_pko_send_hdr_desc(struct sk_buff *skb)
+{
+ u64 checksum_alg;
+ u64 send_hdr = 0;
+ u8 l4_hdr = 0;
+
+ /* See PKO_SEND_HDR_S in the HRM for the send header descriptor
+ * format.
+ */
+#ifdef __LITTLE_ENDIAN
+ send_hdr |= BIT(43);
+#endif
+
+ if (!OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X)) {
+ /* Don't allocate to L2 */
+ send_hdr |= BIT(42);
+ }
+
+ /* Don't automatically free to FPA */
+ send_hdr |= BIT(40);
+
+ send_hdr |= skb->len;
+
+ if (skb->ip_summed != CHECKSUM_NONE &&
+ skb->ip_summed != CHECKSUM_UNNECESSARY) {
+#ifndef BROKEN_SIMULATOR_CSUM
+ switch (skb->protocol) {
+ case htons(ETH_P_IP):
+ send_hdr |= ETH_HLEN << 16;
+ send_hdr |= BIT(45);
+ l4_hdr = ip_hdr(skb)->protocol;
+ send_hdr |= (ETH_HLEN + (4 * ip_hdr(skb)->ihl)) << 24;
+ break;
+
+ case htons(ETH_P_IPV6):
+ l4_hdr = ipv6_hdr(skb)->nexthdr;
+ send_hdr |= ETH_HLEN << 16;
+ break;
+
+ default:
+ break;
+ }
+#endif
+
+ checksum_alg = 1; /* UDP == 1 */
+ switch (l4_hdr) {
+ case IPPROTO_SCTP:
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X))
+ break;
+ checksum_alg++; /* SCTP == 3 */
+ /* Fall through */
+ case IPPROTO_TCP: /* TCP == 2 */
+ checksum_alg++;
+ /* Fall through */
+ case IPPROTO_UDP:
+ if (skb_transport_header_was_set(skb)) {
+ int l4ptr = skb_transport_header(skb) -
+ skb->data;
+ send_hdr &= ~GENMASK_ULL(31, 24);
+ send_hdr |= l4ptr << 24;
+ send_hdr |= checksum_alg << 46;
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ return send_hdr;
+}
+
+static inline u64 build_pko_send_ext_desc(struct sk_buff *skb)
+{
+ u64 send_ext;
+
+ /* See PKO_SEND_EXT_S in the HRM for the send extended descriptor
+ * format.
+ */
+ skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+ send_ext = (u64)PKO_SENDSUBDC_EXT << 44;
+ send_ext |= 1ull << 40;
+ send_ext |= BIT(39);
+ send_ext |= ETH_HLEN << 16;
+
+ return send_ext;
+}
+
+static inline u64 build_pko_send_tso(struct sk_buff *skb, uint mtu)
+{
+ u64 send_tso;
+
+ /* See PKO_SEND_TSO_S in the HRM for the send tso descriptor format */
+ send_tso = 12ull << 56;
+ send_tso |= (u64)PKO_SENDSUBDC_TSO << 44;
+ send_tso |= (skb_transport_offset(skb) + tcp_hdrlen(skb)) << 24;
+ send_tso |= (mtu + ETH_HLEN) << 8;
+
+ return send_tso;
+}
+
+static inline u64 build_pko_send_mem_sub(u64 addr)
+{
+ u64 send_mem;
+
+ /* See PKO_SEND_MEM_S in the HRM for the send mem descriptor format */
+ send_mem = (u64)PKO_SENDSUBDC_MEM << 44;
+ send_mem |= (u64)MEMDSZ_B64 << 60;
+ send_mem |= (u64)MEMALG_SUB << 56;
+ send_mem |= BIT_ULL(48);
+ send_mem |= addr;
+
+ return send_mem;
+}
+
+static inline u64 build_pko_send_mem_ts(u64 addr)
+{
+ u64 send_mem;
+
+ /* See PKO_SEND_MEM_S in the HRM for the send mem descriptor format */
+ send_mem = 1ull << 62;
+ send_mem |= (u64)PKO_SENDSUBDC_MEM << 44;
+ send_mem |= (u64)MEMDSZ_B64 << 60;
+ send_mem |= (u64)MEMALG_SETTSTMP << 56;
+ send_mem |= addr;
+
+ return send_mem;
+}
+
+static inline u64 build_pko_send_free(u64 addr)
+{
+ u64 send_free;
+
+ /* See PKO_SEND_FREE_S in the HRM for the send free descriptor format */
+ send_free = (u64)PKO_SENDSUBDC_FREE << 44;
+ send_free |= addr;
+
+ return send_free;
+}
+
+static inline u64 build_pko_send_work(int grp, u64 addr)
+{
+ u64 send_work;
+
+ /* See PKO_SEND_WORK_S in the HRM for the send work descriptor format */
+ send_work = (u64)PKO_SENDSUBDC_WORK << 44;
+ send_work |= (u64)grp << 52;
+ send_work |= 2ull << 50;
+ send_work |= addr;
+
+ return send_work;
+}
+
+static int octeon3_eth_ndo_start_xmit(struct sk_buff *skb,
+ struct net_device *netdev)
+{
+ struct octeon3_ethernet *priv = netdev_priv(netdev);
+ struct octeon3_ethernet_node *oen;
+ u64 scr_off = LMTDMA_SCR_OFFSET;
+ struct sk_buff *skb_tmp;
+ u64 pko_send_desc;
+ u64 *lmtdma_addr;
+ unsigned int mss;
+ u64 lmtdma_data;
+ u64 aq_cnt = 0;
+ int frag_count;
+ long backlog;
+ u64 head_len;
+ void **work;
+ int grp;
+ int i;
+
+ frag_count = 0;
+ if (skb_has_frag_list(skb))
+ skb_walk_frags(skb, skb_tmp)
+ frag_count++;
+
+ /* Stop the queue if pko or sso are not keeping up */
+ oen = octeon3_eth_node + priv->node;
+ aq_cnt = oct_csr_read(SSO_GRP_AQ_CNT(oen->node, oen->tx_complete_grp));
+ aq_cnt &= GENMASK_ULL(32, 0);
+ backlog = atomic64_inc_return(&priv->tx_backlog);
+ if (unlikely(backlog > MAX_TX_QUEUE_DEPTH || aq_cnt > 100000))
+ netif_stop_queue(netdev);
+
+ /* We have space for 11 segment pointers, If there will be
+ * more than that, we must linearize. The count is: 1 (base
+ * SKB) + frag_count + nr_frags.
+ */
+ if (unlikely(skb_shinfo(skb)->nr_frags + frag_count > 10)) {
+ if (unlikely(__skb_linearize(skb)))
+ goto skip_xmit;
+ frag_count = 0;
+ }
+
+ work = (void **)skb->cb;
+ work[0] = netdev;
+ work[1] = NULL;
+
+ /* Adjust the port statistics. */
+ atomic64_inc(&priv->tx_packets);
+ atomic64_add(skb->len, &priv->tx_octets);
+
+ /* Make sure packet data writes are committed before
+ * submitting the command below
+ */
+ wmb();
+
+ /* Build the pko command */
+ pko_send_desc = build_pko_send_hdr_desc(skb);
+ /* We don't save/restore state of CPU local memory for kernel
+ * space access, so we must disable preemption while we build
+ * and transmit the PKO command.
+ */
+ preempt_disable();
+ scratch_write64(scr_off, pko_send_desc);
+ scr_off += sizeof(pko_send_desc);
+
+ /* Request packet to be ptp timestamped */
+ if ((unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) &&
+ unlikely(priv->tx_timestamp_hw)) {
+ pko_send_desc = build_pko_send_ext_desc(skb);
+ scratch_write64(scr_off, pko_send_desc);
+ scr_off += sizeof(pko_send_desc);
+ }
+
+ /* Add the tso descriptor if needed */
+ mss = skb_shinfo(skb)->gso_size;
+ if (unlikely(mss)) {
+ pko_send_desc = build_pko_send_tso(skb, netdev->mtu);
+ scratch_write64(scr_off, pko_send_desc);
+ scr_off += sizeof(pko_send_desc);
+ }
+
+ /* Add a gather descriptor for each segment. See PKO_SEND_GATHER_S for
+ * the send gather descriptor format.
+ */
+ pko_send_desc = (u64)PKO_SENDSUBDC_GATHER << 45;
+ head_len = skb_headlen(skb);
+ if (head_len > 0) {
+ pko_send_desc |= head_len << 48;
+ pko_send_desc |= virt_to_phys(skb->data);
+ scratch_write64(scr_off, pko_send_desc);
+ scr_off += sizeof(pko_send_desc);
+ }
+ for (i = 1; i <= skb_shinfo(skb)->nr_frags; i++) {
+ struct skb_frag_struct *fs = skb_shinfo(skb)->frags + i - 1;
+
+ pko_send_desc &= ~(GENMASK_ULL(63, 48) | GENMASK_ULL(41, 0));
+ pko_send_desc |= (u64)fs->size << 48;
+ pko_send_desc |= virt_to_phys((u8 *)page_address(fs->page.p) + fs->page_offset);
+ scratch_write64(scr_off, pko_send_desc);
+ scr_off += sizeof(pko_send_desc);
+ }
+ skb_walk_frags(skb, skb_tmp) {
+ pko_send_desc &= ~(GENMASK_ULL(63, 48) | GENMASK_ULL(41, 0));
+ pko_send_desc |= (u64)skb_tmp->len << 48;
+ pko_send_desc |= virt_to_phys(skb_tmp->data);
+ scratch_write64(scr_off, pko_send_desc);
+ scr_off += sizeof(pko_send_desc);
+ }
+
+ /* Subtract 1 from the tx_backlog. */
+ pko_send_desc = build_pko_send_mem_sub(virt_to_phys(&priv->tx_backlog));
+ scratch_write64(scr_off, pko_send_desc);
+ scr_off += sizeof(pko_send_desc);
+
+ /* Write the ptp timestamp in the skb itself */
+ if ((unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) &&
+ unlikely(priv->tx_timestamp_hw)) {
+ pko_send_desc = build_pko_send_mem_ts(virt_to_phys(&work[1]));
+ scratch_write64(scr_off, pko_send_desc);
+ scr_off += sizeof(pko_send_desc);
+ }
+
+ /* Send work when finished with the packet. */
+ grp = octeon3_eth_lgrp_to_ggrp(priv->node, priv->tx_complete_grp);
+ pko_send_desc = build_pko_send_work(grp, virt_to_phys(work));
+ scratch_write64(scr_off, pko_send_desc);
+ scr_off += sizeof(pko_send_desc);
+
+ /* See PKO_SEND_DMA_S in the HRM for the lmtdam data format */
+ lmtdma_data = 0;
+ lmtdma_data |= (u64)(LMTDMA_SCR_OFFSET >> 3) << 56;
+ lmtdma_data |= 0x51ull << 40;
+ lmtdma_data |= (u64)priv->node << 36;
+ lmtdma_data |= priv->pko_queue << 16;
+
+ lmtdma_addr = (u64 *)(LMTDMA_ORDERED_IO_ADDR | ((scr_off & 0x78) - 8));
+ *lmtdma_addr = lmtdma_data;
+
+ preempt_enable();
+
+ return NETDEV_TX_OK;
+skip_xmit:
+ atomic64_inc(&priv->tx_dropped);
+ dev_consume_skb_any(skb);
+ return NETDEV_TX_OK;
+}
+
+static int octeon3_eth_set_mac_address(struct net_device *netdev, void *addr)
+{
+ int r = eth_mac_addr(netdev, addr);
+
+ if (r)
+ return r;
+
+ bgx_port_set_rx_filtering(netdev);
+
+ return 0;
+}
+
+static u64 octeon3_cyclecounter_read(const struct cyclecounter *cc)
+{
+ struct octeon3_ethernet *priv;
+ u64 count;
+
+ priv = container_of(cc, struct octeon3_ethernet, cc);
+ count = oct_csr_read(MIO_PTP_CLOCK_HI(priv->node));
+ return count;
+}
+
+static int octeon3_bgx_hwtstamp(struct net_device *netdev, int en)
+{
+ struct octeon3_ethernet *priv = netdev_priv(netdev);
+ u64 data;
+
+ switch (bgx_port_get_mode(priv->node, priv->interface, priv->index)) {
+ case PORT_MODE_RGMII:
+ case PORT_MODE_SGMII:
+ data = oct_csr_read(BGX_GMP_GMI_RX_FRM_CTL(priv->node, priv->interface, priv->index));
+ if (en)
+ data |= BIT(12);
+ else
+ data &= ~BIT(12);
+ oct_csr_write(data, BGX_GMP_GMI_RX_FRM_CTL(priv->node, priv->interface, priv->index));
+ break;
+
+ case PORT_MODE_XAUI:
+ case PORT_MODE_RXAUI:
+ case PORT_MODE_10G_KR:
+ case PORT_MODE_XLAUI:
+ case PORT_MODE_40G_KR4:
+ case PORT_MODE_XFI:
+ data = oct_csr_read(BGX_SMU_RX_FRM_CTL(priv->node, priv->interface, priv->index));
+ if (en)
+ data |= BIT(12);
+ else
+ data &= ~BIT(12);
+ oct_csr_write(data, BGX_SMU_RX_FRM_CTL(priv->node, priv->interface, priv->index));
+ break;
+
+ default:
+ /* No timestamp support*/
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static int octeon3_pki_hwtstamp(struct net_device *netdev, int en)
+{
+ struct octeon3_ethernet *priv = netdev_priv(netdev);
+ int skip = en ? 8 : 0;
+
+ octeon3_pki_set_ptp_skip(priv->node, priv->pknd, skip);
+
+ return 0;
+}
+
+static int octeon3_ioctl_hwtstamp(struct net_device *netdev,
+ struct ifreq *rq, int cmd)
+{
+ struct octeon3_ethernet *priv = netdev_priv(netdev);
+ struct hwtstamp_config config;
+ u64 data;
+ int en;
+
+ /* The PTP block should be enabled */
+ data = oct_csr_read(MIO_PTP_CLOCK_CFG(priv->node));
+ if (!(data & BIT(0))) {
+ netdev_err(netdev, "Error: PTP clock not enabled\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (copy_from_user(&config, rq->ifr_data, sizeof(config)))
+ return -EFAULT;
+
+ if (config.flags) /* reserved for future extensions */
+ return -EINVAL;
+
+ switch (config.tx_type) {
+ case HWTSTAMP_TX_OFF:
+ priv->tx_timestamp_hw = 0;
+ break;
+ case HWTSTAMP_TX_ON:
+ priv->tx_timestamp_hw = 1;
+ break;
+ default:
+ return -ERANGE;
+ }
+
+ switch (config.rx_filter) {
+ case HWTSTAMP_FILTER_NONE:
+ priv->rx_timestamp_hw = 0;
+ en = 0;
+ break;
+ case HWTSTAMP_FILTER_ALL:
+ case HWTSTAMP_FILTER_SOME:
+ case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
+ case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
+ case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
+ case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
+ case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
+ case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
+ case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
+ case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
+ case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
+ case HWTSTAMP_FILTER_PTP_V2_EVENT:
+ case HWTSTAMP_FILTER_PTP_V2_SYNC:
+ case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
+ priv->rx_timestamp_hw = 1;
+ en = 1;
+ break;
+ default:
+ return -ERANGE;
+ }
+
+ octeon3_bgx_hwtstamp(netdev, en);
+ octeon3_pki_hwtstamp(netdev, en);
+
+ priv->cc.read = octeon3_cyclecounter_read;
+ priv->cc.mask = CYCLECOUNTER_MASK(64);
+ /* Ptp counter is always in nsec */
+ priv->cc.mult = 1;
+ priv->cc.shift = 0;
+ timecounter_init(&priv->tc, &priv->cc, ktime_to_ns(ktime_get_real()));
+
+ return 0;
+}
+
+static int octeon3_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
+{
+ struct octeon3_ethernet *priv;
+ int neg_ppb = 0;
+ u64 comp;
+ u64 diff;
+
+ priv = container_of(ptp, struct octeon3_ethernet, ptp_info);
+
+ if (ppb < 0) {
+ ppb = -ppb;
+ neg_ppb = 1;
+ }
+
+ /* The part per billion (ppb) is a delta from the base frequency */
+ comp = (NSEC_PER_SEC << 32) / octeon_get_io_clock_rate();
+
+ diff = comp;
+ diff *= ppb;
+ diff = div_u64(diff, 1000000000ULL);
+
+ comp = neg_ppb ? comp - diff : comp + diff;
+
+ oct_csr_write(comp, MIO_PTP_CLOCK_COMP(priv->node));
+
+ return 0;
+}
+
+static int octeon3_adjtime(struct ptp_clock_info *ptp, s64 delta)
+{
+ struct octeon3_ethernet *priv;
+ unsigned long flags;
+ s64 now;
+
+ priv = container_of(ptp, struct octeon3_ethernet, ptp_info);
+
+ spin_lock_irqsave(&priv->ptp_lock, flags);
+ now = timecounter_read(&priv->tc);
+ now += delta;
+ timecounter_init(&priv->tc, &priv->cc, now);
+ spin_unlock_irqrestore(&priv->ptp_lock, flags);
+
+ return 0;
+}
+
+static int octeon3_gettime(struct ptp_clock_info *ptp, struct timespec *ts)
+{
+ struct octeon3_ethernet *priv;
+ unsigned long flags;
+ u32 remainder;
+ u64 ns;
+
+ priv = container_of(ptp, struct octeon3_ethernet, ptp_info);
+
+ spin_lock_irqsave(&priv->ptp_lock, flags);
+ ns = timecounter_read(&priv->tc);
+ spin_unlock_irqrestore(&priv->ptp_lock, flags);
+ ts->tv_sec = div_u64_rem(ns, 1000000000ULL, &remainder);
+ ts->tv_nsec = remainder;
+
+ return 0;
+}
+
+static int octeon3_settime(struct ptp_clock_info *ptp,
+ const struct timespec *ts)
+{
+ struct octeon3_ethernet *priv;
+ unsigned long flags;
+ u64 ns;
+
+ priv = container_of(ptp, struct octeon3_ethernet, ptp_info);
+ ns = timespec_to_ns(ts);
+
+ spin_lock_irqsave(&priv->ptp_lock, flags);
+ timecounter_init(&priv->tc, &priv->cc, ns);
+ spin_unlock_irqrestore(&priv->ptp_lock, flags);
+
+ return 0;
+}
+
+static int octeon3_enable(struct ptp_clock_info *ptp,
+ struct ptp_clock_request *rq, int on)
+{
+ return -EOPNOTSUPP;
+}
+
+static int octeon3_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+ int rc;
+
+ switch (cmd) {
+ case SIOCSHWTSTAMP:
+ rc = octeon3_ioctl_hwtstamp(netdev, ifr, cmd);
+ break;
+
+ default:
+ rc = bgx_port_do_ioctl(netdev, ifr, cmd);
+ break;
+ }
+
+ return rc;
+}
+
+static const struct net_device_ops octeon3_eth_netdev_ops = {
+ .ndo_init = octeon3_eth_bgx_ndo_init,
+ .ndo_uninit = octeon3_eth_ndo_uninit,
+ .ndo_open = octeon3_eth_bgx_ndo_open,
+ .ndo_stop = octeon3_eth_bgx_ndo_stop,
+ .ndo_start_xmit = octeon3_eth_ndo_start_xmit,
+ .ndo_get_stats64 = octeon3_eth_ndo_get_stats64,
+ .ndo_set_rx_mode = bgx_port_set_rx_filtering,
+ .ndo_set_mac_address = octeon3_eth_set_mac_address,
+ .ndo_change_mtu = bgx_port_change_mtu,
+ .ndo_do_ioctl = octeon3_ioctl,
+};
+
+static int octeon3_eth_probe(struct platform_device *pdev)
+{
+ struct octeon3_ethernet *priv;
+ struct net_device *netdev;
+ int r;
+
+ struct mac_platform_data *pd = dev_get_platdata(&pdev->dev);
+
+ r = octeon3_eth_global_init(pd->numa_node, pdev);
+ if (r)
+ return r;
+
+ dev_info(&pdev->dev, "Probing %d-%d:%d\n",
+ pd->numa_node, pd->interface, pd->port);
+ netdev = alloc_etherdev(sizeof(struct octeon3_ethernet));
+ if (!netdev) {
+ dev_err(&pdev->dev, "Failed to allocated ethernet device\n");
+ return -ENOMEM;
+ }
+
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+ dev_set_drvdata(&pdev->dev, netdev);
+
+ if (pd->mac_type == BGX_MAC)
+ bgx_port_set_netdev(pdev->dev.parent, netdev);
+ priv = netdev_priv(netdev);
+ priv->netdev = netdev;
+ priv->mac_type = pd->mac_type;
+ INIT_LIST_HEAD(&priv->list);
+ priv->node = pd->numa_node;
+
+ mutex_lock(&octeon3_eth_node[priv->node].device_list_lock);
+ list_add_tail_rcu(&priv->list, &octeon3_eth_node[priv->node].device_list);
+ mutex_unlock(&octeon3_eth_node[priv->node].device_list_lock);
+
+ priv->index = pd->port;
+ priv->interface = pd->interface;
+ spin_lock_init(&priv->stat_lock);
+ INIT_DEFERRABLE_WORK(&priv->stat_work, octeon3_eth_stat_poll);
+
+ if (pd->src_type == XCV)
+ snprintf(netdev->name, IFNAMSIZ, "rgmii%d", pd->port);
+
+ if (priv->mac_type == BGX_MAC)
+ netdev->netdev_ops = &octeon3_eth_netdev_ops;
+
+ netdev->min_mtu = 60;
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X)) {
+ int fifo_size;
+ int max_mtu = 1500;
+
+ /* On 78XX-Pass1 the mtu must be limited. The PKO may
+ * to lock up when calculating the L4 checksum for
+ * large packets. How large the packets can be depends
+ * on the amount of pko fifo assigned to the port.
+ *
+ * FIFO size Max frame size
+ * 2.5 KB 1920
+ * 5.0 KB 4480
+ * 10.0 KB 9600
+ *
+ * The maximum mtu is set to the largest frame size minus the
+ * l2 header.
+ */
+ fifo_size = octeon3_pko_get_fifo_size(priv->node, priv->interface,
+ priv->index, priv->mac_type);
+
+ switch (fifo_size) {
+ case 2560:
+ max_mtu = 1920 - ETH_HLEN - ETH_FCS_LEN - (2 * VLAN_HLEN);
+ break;
+
+ case 5120:
+ max_mtu = 4480 - ETH_HLEN - ETH_FCS_LEN - (2 * VLAN_HLEN);
+ break;
+
+ case 10240:
+ max_mtu = 9600 - ETH_HLEN - ETH_FCS_LEN - (2 * VLAN_HLEN);
+ break;
+
+ default:
+ break;
+ }
+ netdev->max_mtu = max_mtu;
+ } else {
+ netdev->max_mtu = 65392;
+ }
+
+ if (register_netdev(netdev) < 0) {
+ dev_err(&pdev->dev, "Failed to register ethernet device\n");
+ list_del(&priv->list);
+ free_netdev(netdev);
+ }
+
+ spin_lock_init(&priv->ptp_lock);
+ priv->ptp_info.owner = THIS_MODULE;
+ snprintf(priv->ptp_info.name, 16, "octeon3 ptp");
+ priv->ptp_info.max_adj = 250000000;
+ priv->ptp_info.n_alarm = 0;
+ priv->ptp_info.n_ext_ts = 0;
+ priv->ptp_info.n_per_out = 0;
+ priv->ptp_info.pps = 0;
+ priv->ptp_info.adjfreq = octeon3_adjfreq;
+ priv->ptp_info.adjtime = octeon3_adjtime;
+ priv->ptp_info.gettime64 = octeon3_gettime;
+ priv->ptp_info.settime64 = octeon3_settime;
+ priv->ptp_info.enable = octeon3_enable;
+ priv->ptp_clock = ptp_clock_register(&priv->ptp_info, &pdev->dev);
+
+ netdev_info(netdev, "%d rx queues\n", rx_queues);
+ return 0;
+}
+
+/**
+ * octeon3_eth_global_exit() - Free all the used resources and restore the
+ * hardware to the default state.
+ * @node: Node to free/reset.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+static int octeon3_eth_global_exit(int node)
+{
+ struct octeon3_ethernet_node *oen = octeon3_eth_node + node;
+ int i;
+
+ /* Free the tx_complete irq */
+ octeon3_sso_irq_set(node, oen->tx_complete_grp, false);
+ irq_set_affinity_hint(oen->tx_irq, NULL);
+ free_irq(oen->tx_irq, oen);
+ irq_dispose_mapping(oen->tx_irq);
+ oen->tx_irq = 0;
+
+ /* Stop the worker threads */
+ for (i = 0; i < ARRAY_SIZE(oen->workers); i++)
+ kthread_stop(oen->workers[i].task);
+
+ /* Shutdown pki */
+ octeon3_pki_shutdown(node);
+ octeon_fpa3_release_pool(node, oen->pki_packet_pool);
+ kfree(oen->pki_packet_pool_stack);
+
+ /* Shutdown pko */
+ octeon3_pko_exit_global(node);
+ for (;;) {
+ void **w;
+
+ w = octeon_fpa3_alloc(node, oen->pko_aura);
+ if (!w)
+ break;
+ kmem_cache_free(octeon3_eth_sso_pko_cache, w);
+ }
+ octeon_fpa3_release_aura(node, oen->pko_aura);
+ octeon_fpa3_release_pool(node, oen->pko_pool);
+ kfree(oen->pko_pool_stack);
+
+ /* Shutdown sso */
+ octeon3_sso_shutdown(node, oen->sso_aura);
+ octeon3_sso_free_grp(node, oen->tx_complete_grp);
+ for (;;) {
+ void **w;
+
+ w = octeon_fpa3_alloc(node, oen->sso_aura);
+ if (!w)
+ break;
+ kmem_cache_free(octeon3_eth_sso_pko_cache, w);
+ }
+ octeon_fpa3_release_aura(node, oen->sso_aura);
+ octeon_fpa3_release_pool(node, oen->sso_pool);
+ kfree(oen->sso_pool_stack);
+
+ return 0;
+}
+
+static int octeon3_eth_remove(struct platform_device *pdev)
+{
+ struct net_device *netdev = dev_get_drvdata(&pdev->dev);
+ struct octeon3_ethernet *priv = netdev_priv(netdev);
+ struct octeon3_ethernet_node *oen;
+ struct mac_platform_data *pd;
+ int node;
+
+ node = priv->node;
+ oen = octeon3_eth_node + node;
+ pd = dev_get_platdata(&pdev->dev);
+
+ ptp_clock_unregister(priv->ptp_clock);
+ unregister_netdev(netdev);
+ if (pd->mac_type == BGX_MAC)
+ bgx_port_set_netdev(pdev->dev.parent, NULL);
+ dev_set_drvdata(&pdev->dev, NULL);
+
+ /* Free all resources when there are no more devices */
+ mutex_lock(&octeon3_eth_init_mutex);
+ mutex_lock(&oen->device_list_lock);
+ list_del_rcu(&priv->list);
+ if (oen->init_done && list_empty(&oen->device_list)) {
+ oen->init_done = false;
+ octeon3_eth_global_exit(node);
+ }
+
+ mutex_unlock(&oen->device_list_lock);
+ mutex_unlock(&octeon3_eth_init_mutex);
+ free_netdev(netdev);
+
+ return 0;
+}
+
+static void octeon3_eth_shutdown(struct platform_device *pdev)
+{
+ octeon3_eth_remove(pdev);
+}
+
+static struct platform_driver octeon3_eth_driver = {
+ .probe = octeon3_eth_probe,
+ .remove = octeon3_eth_remove,
+ .shutdown = octeon3_eth_shutdown,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "ethernet-mac-pki",
+ },
+};
+
+static int __init octeon3_eth_init(void)
+{
+ int nr = num_online_cpus();
+
+ if (nr >= 4)
+ rx_queues = 4;
+ else if (nr >= 2)
+ rx_queues = 2;
+ else
+ rx_queues = 1;
+
+ return platform_driver_register(&octeon3_eth_driver);
+}
+module_init(octeon3_eth_init);
+
+static void __exit octeon3_eth_exit(void)
+{
+ platform_driver_unregister(&octeon3_eth_driver);
+
+ /* Destroy the memory cache used by sso and pko */
+ kmem_cache_destroy(octeon3_eth_sso_pko_cache);
+}
+module_exit(octeon3_eth_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Cavium, Inc. <support@caviumnetworks.com>");
+MODULE_DESCRIPTION("Cavium, Inc. PKI/PKO Ethernet driver.");
diff --git a/drivers/net/ethernet/cavium/octeon/octeon3-fpa.c b/drivers/net/ethernet/cavium/octeon/octeon3-fpa.c
new file mode 100644
index 0000000..f302c32
--- /dev/null
+++ b/drivers/net/ethernet/cavium/octeon/octeon3-fpa.c
@@ -0,0 +1,358 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Driver for the Octeon III Free Pool Unit (fpa).
+ *
+ * Copyright (C) 2015-2017 Cavium, Inc.
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#include <asm/octeon/octeon.h>
+
+#include "octeon3.h"
+
+/* Registers are accessed via xkphys */
+#define FPA_BASE(node) (SET_XKPHYS + NODE_OFFSET(node) + 0x1280000000000ull)
+
+#define FPA_GEN_CFG(n) (FPA_BASE(n) + 0x00000050)
+
+#define FPA_POOLX_CFG(n, p) (FPA_BASE(n) + ((p) << 3) + 0x10000000)
+#define FPA_POOLX_START_ADDR(n, p) (FPA_BASE(n) + ((p) << 3) + 0x10500000)
+#define FPA_POOLX_END_ADDR(n, p) (FPA_BASE(n) + ((p) << 3) + 0x10600000)
+#define FPA_POOLX_STACK_BASE(n, p) (FPA_BASE(n) + ((p) << 3) + 0x10700000)
+#define FPA_POOLX_STACK_END(n, p) (FPA_BASE(n) + ((p) << 3) + 0x10800000)
+#define FPA_POOLX_STACK_ADDR(n, p) (FPA_BASE(n) + ((p) << 3) + 0x10900000)
+
+#define FPA_AURAX_POOL(n, a) (FPA_BASE(n) + ((a) << 3) + 0x20000000)
+#define FPA_AURAX_CFG(n, a) (FPA_BASE(n) + ((a) << 3) + 0x20100000)
+#define FPA_AURAX_CNT(n, a) (FPA_BASE(n) + ((a) << 3) + 0x20200000)
+#define FPA_AURAX_CNT_LIMIT(n, a) (FPA_BASE(n) + ((a) << 3) + 0x20400000)
+#define FPA_AURAX_CNT_THRESHOLD(n, a) (FPA_BASE(n) + ((a) << 3) + 0x20500000)
+#define FPA_AURAX_POOL_LEVELS(n, a) (FPA_BASE(n) + ((a) << 3) + 0x20700000)
+#define FPA_AURAX_CNT_LEVELS(n, a) (FPA_BASE(n) + ((a) << 3) + 0x20800000)
+
+static DEFINE_MUTEX(octeon_fpa3_lock);
+
+static int get_num_pools(void)
+{
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX))
+ return 64;
+ if (OCTEON_IS_MODEL(OCTEON_CNF75XX) || OCTEON_IS_MODEL(OCTEON_CN73XX))
+ return 32;
+ return 0;
+}
+
+static int get_num_auras(void)
+{
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX))
+ return 1024;
+ if (OCTEON_IS_MODEL(OCTEON_CNF75XX) || OCTEON_IS_MODEL(OCTEON_CN73XX))
+ return 512;
+ return 0;
+}
+
+/**
+ * octeon_fpa3_init() - Initialize the fpa to default values.
+ * @node: Node of fpa to initialize.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+int octeon_fpa3_init(int node)
+{
+ static bool init_done[2];
+ int aura_cnt;
+ u64 data;
+ int i;
+
+ mutex_lock(&octeon_fpa3_lock);
+
+ if (init_done[node])
+ goto done;
+
+ aura_cnt = get_num_auras();
+ for (i = 0; i < aura_cnt; i++) {
+ oct_csr_write(0x100000000ull, FPA_AURAX_CNT(node, i));
+ oct_csr_write(0xfffffffffull, FPA_AURAX_CNT_LIMIT(node, i));
+ oct_csr_write(0xffffffffeull, FPA_AURAX_CNT_THRESHOLD(node, i));
+ }
+
+ data = oct_csr_read(FPA_GEN_CFG(node));
+ data &= ~GENMASK_ULL(9, 4);
+ data |= 3 << 4;
+ oct_csr_write(data, FPA_GEN_CFG(node));
+
+ init_done[node] = 1;
+ done:
+ mutex_unlock(&octeon_fpa3_lock);
+ return 0;
+}
+EXPORT_SYMBOL(octeon_fpa3_init);
+
+/**
+ * octeon_fpa3_pool_init() - Initialize a pool.
+ * @node: Node to initialize pool on.
+ * @pool_num: Requested pool number (-1 for don't care).
+ * @pool: Updated with the initialized pool number.
+ * @pool_stack: Updated with the base of the memory allocated for the pool
+ * stack.
+ * @num_ptrs: Number of pointers to allocated on the stack.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+int octeon_fpa3_pool_init(int node, int pool_num, int *pool,
+ void **pool_stack, int num_ptrs)
+{
+ struct global_resource_tag tag;
+ u64 pool_stack_start;
+ u64 pool_stack_end;
+ int stack_size;
+ char buf[16];
+ int rc = 0;
+ u64 data;
+
+ mutex_lock(&octeon_fpa3_lock);
+
+ strncpy((char *)&tag.lo, "cvm_pool", 8);
+ snprintf(buf, 16, "_%d......", node);
+ memcpy(&tag.hi, buf, 8);
+
+ res_mgr_create_resource(tag, get_num_pools());
+ *pool = res_mgr_alloc(tag, pool_num, true);
+ if (*pool < 0) {
+ rc = -ENODEV;
+ goto error;
+ }
+
+ oct_csr_write(0, FPA_POOLX_CFG(node, *pool));
+ oct_csr_write(128, FPA_POOLX_START_ADDR(node, *pool));
+ oct_csr_write(GENMASK_ULL(41, 7), FPA_POOLX_END_ADDR(node, *pool));
+
+ stack_size = (DIV_ROUND_UP(num_ptrs, 29) + 1) * 128;
+ *pool_stack = kmalloc_node(stack_size, GFP_KERNEL, node);
+ if (!*pool_stack) {
+ pr_err("Failed to allocate pool stack memory pool=%d\n",
+ pool_num);
+ rc = -ENOMEM;
+ goto error_stack;
+ }
+
+ pool_stack_start = virt_to_phys(*pool_stack);
+ pool_stack_end = round_down(pool_stack_start + stack_size, 128);
+ pool_stack_start = round_up(pool_stack_start, 128);
+ oct_csr_write(pool_stack_start, FPA_POOLX_STACK_BASE(node, *pool));
+ oct_csr_write(pool_stack_start, FPA_POOLX_STACK_ADDR(node, *pool));
+ oct_csr_write(pool_stack_end, FPA_POOLX_STACK_END(node, *pool));
+
+ data = (2 << 3) | BIT(0);
+ oct_csr_write(data, FPA_POOLX_CFG(node, *pool));
+
+ mutex_unlock(&octeon_fpa3_lock);
+ return 0;
+
+error_stack:
+ res_mgr_free(tag, *pool);
+error:
+ mutex_unlock(&octeon_fpa3_lock);
+ return rc;
+}
+EXPORT_SYMBOL(octeon_fpa3_pool_init);
+
+/**
+ * octeon_fpa3_release_pool() - Release a pool.
+ * @node: Node pool is on.
+ * @pool: Pool to release.
+ */
+void octeon_fpa3_release_pool(int node, int pool)
+{
+ struct global_resource_tag tag;
+ char buf[16];
+
+ mutex_lock(&octeon_fpa3_lock);
+
+ strncpy((char *)&tag.lo, "cvm_pool", 8);
+ snprintf(buf, 16, "_%d......", node);
+ memcpy(&tag.hi, buf, 8);
+
+ res_mgr_free(tag, pool);
+
+ mutex_unlock(&octeon_fpa3_lock);
+}
+EXPORT_SYMBOL(octeon_fpa3_release_pool);
+
+/**
+ * octeon_fpa3_aura_init() - Initialize an aura.
+ * @node: Node to initialize aura on.
+ * @pool: Pool the aura belongs to.
+ * @aura_num: Requested aura number (-1 for don't care).
+ * @aura: Updated with the initialized aura number.
+ * @num_bufs: Number of buffers in the aura.
+ * @limit: Limit for the aura.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+int octeon_fpa3_aura_init(int node, int pool, int aura_num,
+ int *aura, int num_bufs, unsigned int limit)
+{
+ struct global_resource_tag tag;
+ unsigned int drop;
+ unsigned int pass;
+ char buf[16];
+ int rc = 0;
+ u64 shift;
+ u64 data;
+
+ mutex_lock(&octeon_fpa3_lock);
+
+ strncpy((char *)&tag.lo, "cvm_aura", 8);
+ snprintf(buf, 16, "_%d......", node);
+ memcpy(&tag.hi, buf, 8);
+
+ res_mgr_create_resource(tag, get_num_auras());
+ *aura = res_mgr_alloc(tag, aura_num, true);
+ if (*aura < 0) {
+ rc = -ENODEV;
+ goto error;
+ }
+
+ oct_csr_write(0, FPA_AURAX_CFG(node, *aura));
+
+ /* Allow twice the limit before saturation at zero */
+ limit *= 2;
+ data = limit;
+ oct_csr_write(data, FPA_AURAX_CNT_LIMIT(node, *aura));
+ oct_csr_write(data, FPA_AURAX_CNT(node, *aura));
+
+ oct_csr_write(pool, FPA_AURAX_POOL(node, *aura));
+
+ /* No per-pool RED/Drop */
+ oct_csr_write(0, FPA_AURAX_POOL_LEVELS(node, *aura));
+
+ shift = 0;
+ while ((limit >> shift) > 255)
+ shift++;
+
+ drop = (limit - num_bufs / 20) >> shift; /* 95% */
+ pass = (limit - (num_bufs * 3) / 20) >> shift; /* 85% */
+
+ /* Enable per aura RED/drop */
+ data = BIT(38) | (shift << 32) | (drop << 16) | (pass << 8);
+ oct_csr_write(data, FPA_AURAX_CNT_LEVELS(node, *aura));
+
+error:
+ mutex_unlock(&octeon_fpa3_lock);
+ return rc;
+}
+EXPORT_SYMBOL(octeon_fpa3_aura_init);
+
+/**
+ * octeon_fpa3_release_aura() - Release an aura.
+ * @node: Node to aura is on.
+ * @aura: Aura to release.
+ */
+void octeon_fpa3_release_aura(int node, int aura)
+{
+ struct global_resource_tag tag;
+ char buf[16];
+
+ mutex_lock(&octeon_fpa3_lock);
+
+ strncpy((char *)&tag.lo, "cvm_aura", 8);
+ snprintf(buf, 16, "_%d......", node);
+ memcpy(&tag.hi, buf, 8);
+
+ res_mgr_free(tag, aura);
+
+ mutex_unlock(&octeon_fpa3_lock);
+}
+EXPORT_SYMBOL(octeon_fpa3_release_aura);
+
+/**
+ * octeon_fpa3_alloc() - Get a buffer from a aura's pool.
+ * @node: Node to free memory to.
+ * @aura: Aura to free memory to.
+ *
+ * Return: Allocated buffer pointer if successful, NULL on error.
+ */
+void *octeon_fpa3_alloc(int node, int aura)
+{
+ void *buf = NULL;
+ u64 buf_phys;
+ u64 addr;
+
+ /* Buffer pointers are obtained using load operations */
+ addr = BIT(63) | BIT(48) | (0x29ull << 40) | ((u64)node << 36) |
+ (aura << 16);
+ buf_phys = READ_ONCE(*(u64 *)addr);
+
+ if (buf_phys)
+ buf = phys_to_virt(buf_phys);
+
+ return buf;
+}
+EXPORT_SYMBOL(octeon_fpa3_alloc);
+
+/**
+ * octeon_fpa3_free() - Add a buffer back to the aura's pool.
+ * @node: Node to free memory to.
+ * @aura: Aura to free memory to.
+ * @buf: Address of buffer to free to the aura's pool.
+ */
+void octeon_fpa3_free(int node, int aura, const void *buf)
+{
+ u64 buf_phys;
+ u64 addr;
+
+ buf_phys = virt_to_phys(buf);
+
+ /* Make sure that any previous writes to memory go out before we free
+ * this buffer. This also serves as a barrier to prevent GCC from
+ * reordering operations to after the free.
+ */
+ wmb();
+
+ /* Buffers are added to fpa pools using store operations */
+ addr = BIT(63) | BIT(48) | (0x29ull << 40) | ((u64)node << 36);
+ addr |= (aura << 16);
+ WRITE_ONCE(*(u64 *)addr, buf_phys);
+}
+EXPORT_SYMBOL(octeon_fpa3_free);
+
+/**
+ * octeon_fpa3_mem_fill() - Add buffers to an aura.
+ * @node: Node to get memory from.
+ * @cache: Memory cache to allocate from.
+ * @aura: Aura to add buffers to.
+ * @num_bufs: Number of buffers to add to the aura.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+int octeon_fpa3_mem_fill(int node, struct kmem_cache *cache,
+ int aura, int num_bufs)
+{
+ void *mem;
+ int rc = 0;
+ int i;
+
+ mutex_lock(&octeon_fpa3_lock);
+
+ for (i = 0; i < num_bufs; i++) {
+ mem = kmem_cache_alloc_node(cache, GFP_KERNEL, node);
+ if (!mem) {
+ pr_err("Failed to allocate memory for aura=%d\n", aura);
+ rc = -ENOMEM;
+ break;
+ }
+ octeon_fpa3_free(node, aura, mem);
+ }
+
+ mutex_unlock(&octeon_fpa3_lock);
+ return rc;
+}
+EXPORT_SYMBOL(octeon_fpa3_mem_fill);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Cavium, Inc. Octeon III FPA manager.");
diff --git a/drivers/net/ethernet/cavium/octeon/octeon3-pki.c b/drivers/net/ethernet/cavium/octeon/octeon3-pki.c
new file mode 100644
index 0000000..f2fa085
--- /dev/null
+++ b/drivers/net/ethernet/cavium/octeon/octeon3-pki.c
@@ -0,0 +1,823 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2017 Cavium, Inc.
+ *
+ * Configuration and management of the PacKet Input (PKI) block.
+ */
+#include <linux/firmware.h>
+#include <linux/module.h>
+
+#include <asm/octeon/octeon.h>
+
+#include "octeon3.h"
+
+#define PKI_CLUSTER_FIRMWARE "cavium/pki-cluster.bin"
+#define VERSION_LEN 8
+
+#define MAX_CLUSTERS 4
+#define MAX_BANKS 2
+#define MAX_BANK_ENTRIES 192
+#define PKI_NUM_QPG_ENTRY 2048
+#define PKI_NUM_STYLE 256
+#define PKI_NUM_FINAL_STYLE 64
+#define MAX_PKNDS 64
+
+/* Registers are accessed via xkphys */
+#define PKI_BASE 0x1180044000000ull
+#define PKI_ADDR(node) (SET_XKPHYS + NODE_OFFSET(node) + \
+ PKI_BASE)
+
+#define PKI_SFT_RST(n) (PKI_ADDR(n) + 0x000010)
+#define PKI_BUF_CTL(n) (PKI_ADDR(n) + 0x000100)
+#define PKI_STAT_CTL(n) (PKI_ADDR(n) + 0x000110)
+#define PKI_ICG_CFG(n) (PKI_ADDR(n) + 0x00a000)
+
+#define CLUSTER_OFFSET(c) ((c) << 16)
+#define CL_ADDR(n, c) (PKI_ADDR(n) + CLUSTER_OFFSET(c))
+#define PKI_CL_ECC_CTL(n, c) (CL_ADDR(n, c) + 0x00c020)
+
+#define PKI_STYLE_BUF(n, s) (PKI_ADDR(n) + ((s) << 3) + 0x024000)
+
+#define PKI_LTYPE_MAP(n, l) (PKI_ADDR(n) + ((l) << 3) + 0x005000)
+#define PKI_IMEM(n, i) (PKI_ADDR(n) + ((i) << 3) + 0x100000)
+
+#define PKI_CL_PKIND_CFG(n, c, p) (CL_ADDR(n, c) + ((p) << 8) + 0x300040)
+#define PKI_CL_PKIND_STYLE(n, c, p) (CL_ADDR(n, c) + ((p) << 8) + 0x300048)
+#define PKI_CL_PKIND_SKIP(n, c, p) (CL_ADDR(n, c) + ((p) << 8) + 0x300050)
+#define PKI_CL_PKIND_L2_CUSTOM(n, c, p) (CL_ADDR(n, c) + ((p) << 8) + 0x300058)
+#define PKI_CL_PKIND_LG_CUSTOM(n, c, p) (CL_ADDR(n, c) + ((p) << 8) + 0x300060)
+
+#define STYLE_OFFSET(s) ((s) << 3)
+#define STYLE_ADDR(n, c, s) (PKI_ADDR(n) + CLUSTER_OFFSET(c) + \
+ STYLE_OFFSET(s))
+#define PKI_CL_STYLE_CFG(n, c, s) (STYLE_ADDR(n, c, s) + 0x500000)
+#define PKI_CL_STYLE_CFG2(n, c, s) (STYLE_ADDR(n, c, s) + 0x500800)
+#define PKI_CLX_STYLEX_ALG(n, c, s) (STYLE_ADDR(n, c, s) + 0x501000)
+
+#define PCAM_OFFSET(bank) ((bank) << 12)
+#define PCAM_ENTRY_OFFSET(entry) ((entry) << 3)
+#define PCAM_ADDR(n, c, b, e) (PKI_ADDR(n) + CLUSTER_OFFSET(c) + \
+ PCAM_OFFSET(b) + PCAM_ENTRY_OFFSET(e))
+#define PKI_CL_PCAM_TERM(n, c, b, e) (PCAM_ADDR(n, c, b, e) + 0x700000)
+#define PKI_CL_PCAM_MATCH(n, c, b, e) (PCAM_ADDR(n, c, b, e) + 0x704000)
+#define PKI_CL_PCAM_ACTION(n, c, b, e) (PCAM_ADDR(n, c, b, e) + 0x708000)
+
+#define PKI_QPG_TBLX(n, i) (PKI_ADDR(n) + ((i) << 3) + 0x800000)
+#define PKI_AURAX_CFG(n, a) (PKI_ADDR(n) + ((a) << 3) + 0x900000)
+#define PKI_STATX_STAT0(n, p) (PKI_ADDR(n) + ((p) << 8) + 0xe00038)
+#define PKI_STATX_STAT1(n, p) (PKI_ADDR(n) + ((p) << 8) + 0xe00040)
+#define PKI_STATX_STAT3(n, p) (PKI_ADDR(n) + ((p) << 8) + 0xe00050)
+
+enum pcam_term {
+ NONE = 0x0,
+ L2_CUSTOM = 0x2,
+ HIGIGD = 0x4,
+ HIGIG = 0x5,
+ SMACH = 0x8,
+ SMACL = 0x9,
+ DMACH = 0xa,
+ DMACL = 0xb,
+ GLORT = 0x12,
+ DSA = 0x13,
+ ETHTYPE0 = 0x18,
+ ETHTYPE1 = 0x19,
+ ETHTYPE2 = 0x1a,
+ ETHTYPE3 = 0x1b,
+ MPLS0 = 0x1e,
+ L3_SIPHH = 0x1f,
+ L3_SIPMH = 0x20,
+ L3_SIPML = 0x21,
+ L3_SIPLL = 0x22,
+ L3_FLAGS = 0x23,
+ L3_DIPHH = 0x24,
+ L3_DIPMH = 0x25,
+ L3_DIPML = 0x26,
+ L3_DIPLL = 0x27,
+ LD_VNI = 0x28,
+ IL3_FLAGS = 0x2b,
+ LF_SPI = 0x2e,
+ L4_SPORT = 0x2f,
+ L4_PORT = 0x30,
+ LG_CUSTOM = 0x39
+};
+
+enum pki_ltype {
+ LTYPE_NONE = 0x00,
+ LTYPE_ENET = 0x01,
+ LTYPE_VLAN = 0x02,
+ LTYPE_SNAP_PAYLD = 0x05,
+ LTYPE_ARP = 0x06,
+ LTYPE_RARP = 0x07,
+ LTYPE_IP4 = 0x08,
+ LTYPE_IP4_OPT = 0x09,
+ LTYPE_IP6 = 0x0a,
+ LTYPE_IP6_OPT = 0x0b,
+ LTYPE_IPSEC_ESP = 0x0c,
+ LTYPE_IPFRAG = 0x0d,
+ LTYPE_IPCOMP = 0x0e,
+ LTYPE_TCP = 0x10,
+ LTYPE_UDP = 0x11,
+ LTYPE_SCTP = 0x12,
+ LTYPE_UDP_VXLAN = 0x13,
+ LTYPE_GRE = 0x14,
+ LTYPE_NVGRE = 0x15,
+ LTYPE_GTP = 0x16,
+ LTYPE_UDP_GENEVE = 0x17,
+ LTYPE_SW28 = 0x1c,
+ LTYPE_SW29 = 0x1d,
+ LTYPE_SW30 = 0x1e,
+ LTYPE_SW31 = 0x1f
+};
+
+enum pki_beltype {
+ BELTYPE_NONE = 0x00,
+ BELTYPE_MISC = 0x01,
+ BELTYPE_IP4 = 0x02,
+ BELTYPE_IP6 = 0x03,
+ BELTYPE_TCP = 0x04,
+ BELTYPE_UDP = 0x05,
+ BELTYPE_SCTP = 0x06,
+ BELTYPE_SNAP = 0x07
+};
+
+struct ltype_beltype {
+ enum pki_ltype ltype;
+ enum pki_beltype beltype;
+};
+
+/**
+ * struct pcam_term_info - Describes a term to configure in the pcam.
+ * @term: Identifies the term to configure.
+ * @term_mask: Specifies don't cares in the term.
+ * @style: Style to compare.
+ * @style_mask: Specifies don't cares in the style.
+ * @data: Data to compare.
+ * @data_mask: Specifies don't cares in the data.
+ */
+struct pcam_term_info {
+ u8 term;
+ u8 term_mask;
+ u8 style;
+ u8 style_mask;
+ u32 data;
+ u32 data_mask;
+};
+
+/**
+ * struct fw_hdr - Describes the firmware.
+ * @version: Firmware version.
+ * @size: Size of the data in bytes.
+ * @data: Actual firmware data.
+ */
+struct fw_hdr {
+ char version[VERSION_LEN];
+ u64 size;
+ u64 data[];
+};
+
+static struct ltype_beltype dflt_ltype_config[] = {
+ { LTYPE_NONE, BELTYPE_NONE },
+ { LTYPE_ENET, BELTYPE_MISC },
+ { LTYPE_VLAN, BELTYPE_MISC },
+ { LTYPE_SNAP_PAYLD, BELTYPE_MISC },
+ { LTYPE_ARP, BELTYPE_MISC },
+ { LTYPE_RARP, BELTYPE_MISC },
+ { LTYPE_IP4, BELTYPE_IP4 },
+ { LTYPE_IP4_OPT, BELTYPE_IP4 },
+ { LTYPE_IP6, BELTYPE_IP6 },
+ { LTYPE_IP6_OPT, BELTYPE_IP6 },
+ { LTYPE_IPSEC_ESP, BELTYPE_MISC },
+ { LTYPE_IPFRAG, BELTYPE_MISC },
+ { LTYPE_IPCOMP, BELTYPE_MISC },
+ { LTYPE_TCP, BELTYPE_TCP },
+ { LTYPE_UDP, BELTYPE_UDP },
+ { LTYPE_SCTP, BELTYPE_SCTP },
+ { LTYPE_UDP_VXLAN, BELTYPE_UDP },
+ { LTYPE_GRE, BELTYPE_MISC },
+ { LTYPE_NVGRE, BELTYPE_MISC },
+ { LTYPE_GTP, BELTYPE_MISC },
+ { LTYPE_UDP_GENEVE, BELTYPE_UDP },
+ { LTYPE_SW28, BELTYPE_MISC },
+ { LTYPE_SW29, BELTYPE_MISC },
+ { LTYPE_SW30, BELTYPE_MISC },
+ { LTYPE_SW31, BELTYPE_MISC }
+};
+
+static int get_num_clusters(void)
+{
+ if (OCTEON_IS_MODEL(OCTEON_CN73XX) || OCTEON_IS_MODEL(OCTEON_CNF75XX))
+ return 2;
+ return 4;
+}
+
+static int octeon3_pki_pcam_alloc_entry(int node, int entry, int bank)
+{
+ struct global_resource_tag tag;
+ char buf[16];
+ int num_clusters;
+ int rc;
+ int i;
+
+ /* Allocate a pcam entry for cluster0*/
+ strncpy((char *)&tag.lo, "cvm_pcam", 8);
+ snprintf(buf, 16, "_%d%d%d....", node, 0, bank);
+ memcpy(&tag.hi, buf, 8);
+
+ res_mgr_create_resource(tag, MAX_BANK_ENTRIES);
+ rc = res_mgr_alloc(tag, entry, false);
+ if (rc < 0)
+ return rc;
+
+ entry = rc;
+
+ /* Need to allocate entries for all clusters as se code needs it */
+ num_clusters = get_num_clusters();
+ for (i = 1; i < num_clusters; i++) {
+ strncpy((char *)&tag.lo, "cvm_pcam", 8);
+ snprintf(buf, 16, "_%d%d%d....", node, i, bank);
+ memcpy(&tag.hi, buf, 8);
+
+ res_mgr_create_resource(tag, MAX_BANK_ENTRIES);
+ rc = res_mgr_alloc(tag, entry, false);
+ if (rc < 0) {
+ int j;
+
+ pr_err("octeon3-pki: Failed to allocate pcam entry\n");
+ /* Undo whatever we've did */
+ for (j = 0; i < i; j++) {
+ strncpy((char *)&tag.lo, "cvm_pcam", 8);
+ snprintf(buf, 16, "_%d%d%d....", node, j, bank);
+ memcpy(&tag.hi, buf, 8);
+ res_mgr_free(tag, entry);
+ }
+
+ return -1;
+ }
+ }
+
+ return entry;
+}
+
+static int octeon3_pki_pcam_write_entry(int node,
+ struct pcam_term_info *term_info)
+{
+ int num_clusters;
+ u64 action;
+ int entry;
+ u64 match;
+ int bank;
+ u64 term;
+ int i;
+
+ /* Bit 0 of the pcam term determines the bank to use */
+ bank = term_info->term & 1;
+
+ /* Allocate a pcam entry */
+ entry = octeon3_pki_pcam_alloc_entry(node, -1, bank);
+ if (entry < 0)
+ return entry;
+
+ term = 1ull << 63;
+ term |= (u64)(term_info->term & term_info->term_mask) << 40;
+ term |= (~term_info->term & term_info->term_mask) << 8;
+ term |= (u64)(term_info->style & term_info->style_mask) << 32;
+ term |= ~term_info->style & term_info->style_mask;
+
+ match = (u64)(term_info->data & term_info->data_mask) << 32;
+ match |= ~term_info->data & term_info->data_mask;
+
+ action = 0;
+ if (term_info->term >= ETHTYPE0 && term_info->term <= ETHTYPE3) {
+ action |= 2 << 8;
+ action |= 4;
+ }
+
+ /* Must write the term to all clusters */
+ num_clusters = get_num_clusters();
+ for (i = 0; i < num_clusters; i++) {
+ oct_csr_write(0, PKI_CL_PCAM_TERM(node, i, bank, entry));
+ oct_csr_write(match, PKI_CL_PCAM_MATCH(node, i, bank, entry));
+ oct_csr_write(action, PKI_CL_PCAM_ACTION(node, i, bank, entry));
+ oct_csr_write(term, PKI_CL_PCAM_TERM(node, i, bank, entry));
+ }
+
+ return 0;
+}
+
+static int octeon3_pki_alloc_qpg_entry(int node)
+{
+ struct global_resource_tag tag;
+ char buf[16];
+ int entry;
+
+ /* Allocate a qpg entry */
+ strncpy((char *)&tag.lo, "cvm_qpge", 8);
+ snprintf(buf, 16, "t_%d.....", node);
+ memcpy(&tag.hi, buf, 8);
+
+ res_mgr_create_resource(tag, PKI_NUM_QPG_ENTRY);
+ entry = res_mgr_alloc(tag, -1, false);
+ if (entry < 0)
+ pr_err("octeon3-pki: Failed to allocate qpg entry");
+
+ return entry;
+}
+
+static int octeon3_pki_alloc_style(int node)
+{
+ struct global_resource_tag tag;
+ char buf[16];
+ int entry;
+
+ /* Allocate a style entry */
+ strncpy((char *)&tag.lo, "cvm_styl", 8);
+ snprintf(buf, 16, "e_%d.....", node);
+ memcpy(&tag.hi, buf, 8);
+
+ res_mgr_create_resource(tag, PKI_NUM_STYLE);
+ entry = res_mgr_alloc(tag, -1, false);
+ if (entry < 0)
+ pr_err("octeon3-pki: Failed to allocate style");
+
+ return entry;
+}
+
+int octeon3_pki_set_ptp_skip(int node, int pknd, int skip)
+{
+ int num_clusters;
+ u64 data;
+ u64 i;
+
+ num_clusters = get_num_clusters();
+ for (i = 0; i < num_clusters; i++) {
+ data = oct_csr_read(PKI_CL_PKIND_SKIP(node, i, pknd));
+ data &= ~(GENMASK_ULL(15, 8) | GENMASK_ULL(7, 0));
+ data |= (skip << 8) | skip;
+ oct_csr_write(data, PKI_CL_PKIND_SKIP(node, i, pknd));
+
+ data = oct_csr_read(PKI_CL_PKIND_L2_CUSTOM(node, i, pknd));
+ data &= ~GENMASK_ULL(7, 0);
+ data |= skip;
+ oct_csr_write(data, PKI_CL_PKIND_L2_CUSTOM(node, i, pknd));
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(octeon3_pki_set_ptp_skip);
+
+/**
+ * octeon3_pki_get_stats() - Get the statistics for a given pknd (port).
+ * @node: Node to get statistics for.
+ * @pknd: Pknd to get statistis for.
+ * @packets: Updated with the number of packets received.
+ * @octets: Updated with the number of octets received.
+ * @dropped: Updated with the number of dropped packets.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+int octeon3_pki_get_stats(int node, int pknd,
+ u64 *packets, u64 *octets, u64 *dropped)
+{
+ /* PKI-20775, must read until not all ones. */
+ do {
+ *packets = oct_csr_read(PKI_STATX_STAT0(node, pknd));
+ } while (*packets == 0xffffffffffffffffull);
+
+ do {
+ *octets = oct_csr_read(PKI_STATX_STAT1(node, pknd));
+ } while (*octets == 0xffffffffffffffffull);
+
+ do {
+ *dropped = oct_csr_read(PKI_STATX_STAT3(node, pknd));
+ } while (*dropped == 0xffffffffffffffffull);
+
+ return 0;
+}
+EXPORT_SYMBOL(octeon3_pki_get_stats);
+
+/**
+ * octeon3_pki_port_init() - Initialize a port.
+ * @node: Node port is using.
+ * @aura: Aura to use for packet buffers.
+ * @grp: SSO group packets will be queued up for.
+ * @skip: Extra bytes to skip before packet data.
+ * @mb_size: Size of packet buffers.
+ * @pknd: Port kind assigned to the port.
+ * @num_rx_cxt: Number of sso groups used by the port.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+int octeon3_pki_port_init(int node, int aura, int grp, int skip,
+ int mb_size, int pknd, int num_rx_cxt)
+{
+ int num_clusters;
+ int qpg_entry;
+ int style;
+ u64 data;
+ u64 i;
+
+ /* Allocate and configure a qpg table entry for the port's group */
+ i = 0;
+ while ((num_rx_cxt & (1 << i)) == 0)
+ i++;
+ qpg_entry = octeon3_pki_alloc_qpg_entry(node);
+ data = i << 45; /* GRPTAG_OK */
+ data |= ((u64)((node << 8) | grp) << 32); /* GRP_OK */
+ data |= i << 29; /* GRPTAG_BAD*/
+ data |= ((u64)((node << 8) | grp) << 16); /* GRP_BAD */
+ data |= aura; /* LAURA */
+ oct_csr_write(data, PKI_QPG_TBLX(node, qpg_entry));
+
+ /* Allocate a style for the port */
+ style = octeon3_pki_alloc_style(node);
+
+ /* Map the qpg table entry to the style */
+ num_clusters = get_num_clusters();
+ for (i = 0; i < num_clusters; i++) {
+ data = BIT(29) | BIT(22) | qpg_entry;
+ oct_csr_write(data, PKI_CL_STYLE_CFG(node, i, style));
+
+ /* Specify the tag generation rules and checksum to use */
+ oct_csr_write(0xfff49f, PKI_CL_STYLE_CFG2(node, i, style));
+
+ data = BIT(31);
+ oct_csr_write(data, PKI_CLX_STYLEX_ALG(node, i, style));
+ }
+
+ /* Set the style's buffer size and skips:
+ * Every buffer has 128 bytes reserved for Linux.
+ * The first buffer must also skip the wqe (40 bytes).
+ * Srio also requires skipping its header (skip)
+ */
+ data = 1ull << 28; /* WQE_SKIP */
+#ifdef __LITTLE_ENDIAN
+ data |= BIT(32); /* PKT_LEND */
+#endif
+ data |= ((128 + 40 + skip) / 8) << 22; /* FIRST_SKIP */
+ data |= (128 / 8) << 16; /* LATER_SKIP */
+ data |= (mb_size & ~0xf) / 8; /* MB_SIZE */
+ oct_csr_write(data, PKI_STYLE_BUF(node, style));
+
+ /* Assign the initial style to the port via the pknd */
+ for (i = 0; i < num_clusters; i++) {
+ data = oct_csr_read(PKI_CL_PKIND_STYLE(node, i, pknd));
+ data &= ~GENMASK_ULL(7, 0);
+ data |= style;
+ oct_csr_write(data, PKI_CL_PKIND_STYLE(node, i, pknd));
+ }
+
+ /* Enable red */
+ data = BIT(18);
+ oct_csr_write(data, PKI_AURAX_CFG(node, aura));
+
+ /* Clear statistic counters */
+ oct_csr_write(0, PKI_STATX_STAT0(node, pknd));
+ oct_csr_write(0, PKI_STATX_STAT1(node, pknd));
+ oct_csr_write(0, PKI_STATX_STAT3(node, pknd));
+
+ return 0;
+}
+EXPORT_SYMBOL(octeon3_pki_port_init);
+
+/**
+ * octeon3_pki_port_shutdown() - Release all the resources used by a port.
+ * @node: Node port is on.
+ * @pknd: Pknd assigned to the port.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+int octeon3_pki_port_shutdown(int node, int pknd)
+{
+ /* Nothing at the moment */
+ return 0;
+}
+EXPORT_SYMBOL(octeon3_pki_port_shutdown);
+
+/**
+ * octeon3_pki_cluster_init() - Loads the cluster firmware into the
+ * pki clusters.
+ * @node: Node to configure.
+ * @pdev: Device requesting the firmware.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+int octeon3_pki_cluster_init(int node, struct platform_device *pdev)
+{
+ const struct firmware *pki_fw;
+ const struct fw_hdr *hdr;
+ const u64 *data;
+ int rc;
+ int i;
+
+ rc = request_firmware(&pki_fw, PKI_CLUSTER_FIRMWARE, &pdev->dev);
+ if (rc) {
+ dev_err(&pdev->dev, "octeon3-pki: Failed to load %s error=%d\n",
+ PKI_CLUSTER_FIRMWARE, rc);
+ return rc;
+ }
+
+ /* Verify the firmware is valid */
+ hdr = (const struct fw_hdr *)pki_fw->data;
+ if ((pki_fw->size - sizeof(const struct fw_hdr) != hdr->size) ||
+ hdr->size % 8) {
+ dev_err(&pdev->dev, ("octeon3-pki: Corrupted PKI firmware\n"));
+ goto err;
+ }
+
+ dev_info(&pdev->dev, "octeon3-pki: Loading PKI firmware %s\n",
+ hdr->version);
+ data = hdr->data;
+ for (i = 0; i < hdr->size / 8; i++) {
+ oct_csr_write(cpu_to_be64(*data), PKI_IMEM(node, i));
+ data++;
+ }
+err:
+ release_firmware(pki_fw);
+
+ return 0;
+}
+EXPORT_SYMBOL(octeon3_pki_cluster_init);
+
+/**
+ * octeon3_pki_vlan_init() - Configures the pcam to recognize the vlan ethtypes.
+ *
+ * @node: Node to configure.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+int octeon3_pki_vlan_init(int node)
+{
+ u64 data;
+ int rc;
+ int i;
+
+ /* PKI-20858 */
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X)) {
+ for (i = 0; i < 4; i++) {
+ data = oct_csr_read(PKI_CL_ECC_CTL(node, i));
+ data &= ~BIT(63);
+ data |= BIT(4) | BIT(3);
+ oct_csr_write(data, PKI_CL_ECC_CTL(node, i));
+ }
+ }
+
+ /* Configure the pcam ethtype0 and ethtype1 terms */
+ for (i = ETHTYPE0; i <= ETHTYPE1; i++) {
+ struct pcam_term_info term_info;
+
+ /* Term for 0x8100 ethtype */
+ term_info.term = i;
+ term_info.term_mask = 0xfd;
+ term_info.style = 0;
+ term_info.style_mask = 0;
+ term_info.data = 0x81000000;
+ term_info.data_mask = 0xffff0000;
+ rc = octeon3_pki_pcam_write_entry(node, &term_info);
+ if (rc)
+ return rc;
+
+ /* Term for 0x88a8 ethtype */
+ term_info.data = 0x88a80000;
+ rc = octeon3_pki_pcam_write_entry(node, &term_info);
+ if (rc)
+ return rc;
+
+ /* Term for 0x9200 ethtype */
+ term_info.data = 0x92000000;
+ rc = octeon3_pki_pcam_write_entry(node, &term_info);
+ if (rc)
+ return rc;
+
+ /* Term for 0x9100 ethtype */
+ term_info.data = 0x91000000;
+ rc = octeon3_pki_pcam_write_entry(node, &term_info);
+ if (rc)
+ return rc;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(octeon3_pki_vlan_init);
+
+/**
+ * octeon3_pki_ltype_init() - Configures the pki layer types.
+ *
+ * @node: Node to configure.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+int octeon3_pki_ltype_init(int node)
+{
+ enum pki_ltype ltype;
+ u64 data;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(dflt_ltype_config); i++) {
+ ltype = dflt_ltype_config[i].ltype;
+ data = oct_csr_read(PKI_LTYPE_MAP(node, ltype));
+ data &= ~GENMASK_ULL(2, 0);
+ data |= dflt_ltype_config[i].beltype;
+ oct_csr_write(data, PKI_LTYPE_MAP(node, ltype));
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(octeon3_pki_ltype_init);
+
+int octeon3_pki_srio_init(int node, int pknd)
+{
+ int num_clusters;
+ int style;
+ u64 data;
+ int i;
+
+ num_clusters = get_num_clusters();
+ for (i = 0; i < num_clusters; i++) {
+ data = oct_csr_read(PKI_CL_PKIND_STYLE(node, i, pknd));
+ style = data & GENMASK_ULL(7, 0);
+ data &= ~GENMASK_ULL(14, 8);
+ oct_csr_write(data, PKI_CL_PKIND_STYLE(node, i, pknd));
+
+ /* Disable packet length errors and fcs */
+ data = oct_csr_read(PKI_CL_STYLE_CFG(node, i, style));
+ data &= ~(BIT(29) | BIT(26) | BIT(25) | BIT(23) | BIT(22));
+ oct_csr_write(data, PKI_CL_STYLE_CFG(node, i, style));
+
+ /* Packets have no fcs */
+ data = oct_csr_read(PKI_CL_PKIND_CFG(node, i, pknd));
+ data &= ~BIT(7);
+ oct_csr_write(data, PKI_CL_PKIND_CFG(node, i, pknd));
+
+ /* Skip the srio header and the INST_HDR_S data */
+ data = oct_csr_read(PKI_CL_PKIND_SKIP(node, i, pknd));
+ data &= ~(GENMASK_ULL(15, 8) | GENMASK_ULL(7, 0));
+ data |= (16 << 8) | 16;
+ oct_csr_write(data, PKI_CL_PKIND_SKIP(node, i, pknd));
+
+ /* Exclude port number from qpg */
+ data = oct_csr_read(PKI_CLX_STYLEX_ALG(node, i, style));
+ data &= ~GENMASK_ULL(20, 17);
+ oct_csr_write(data, PKI_CLX_STYLEX_ALG(node, i, style));
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(octeon3_pki_srio_init);
+
+/**
+ * octeon3_pki_enable() - Enable the pki.
+ *
+ * @node: Node to configure.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+int octeon3_pki_enable(int node)
+{
+ int timeout;
+ u64 data;
+
+ /* Enable backpressure */
+ data = oct_csr_read(PKI_BUF_CTL(node));
+ data |= BIT(2);
+ oct_csr_write(data, PKI_BUF_CTL(node));
+
+ /* Enable cluster parsing */
+ data = oct_csr_read(PKI_ICG_CFG(node));
+ data |= BIT(24);
+ oct_csr_write(data, PKI_ICG_CFG(node));
+
+ /* Wait until the pki is out of reset */
+ timeout = 10000;
+ do {
+ data = oct_csr_read(PKI_SFT_RST(node));
+ if (!(data & BIT(63)))
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout) {
+ pr_err("octeon3-pki: timeout waiting for reset\n");
+ return -1;
+ }
+
+ /* Enable the pki */
+ data = oct_csr_read(PKI_BUF_CTL(node));
+ data |= BIT(0);
+ oct_csr_write(data, PKI_BUF_CTL(node));
+
+ /* Statistics are kept per pkind */
+ oct_csr_write(0, PKI_STAT_CTL(node));
+
+ return 0;
+}
+EXPORT_SYMBOL(octeon3_pki_enable);
+
+void octeon3_pki_shutdown(int node)
+{
+ struct global_resource_tag tag;
+ char buf[16];
+ int timeout;
+ u64 data;
+ int i;
+ int j;
+ int k;
+
+ /* Disable the pki */
+ data = oct_csr_read(PKI_BUF_CTL(node));
+ if (data & BIT(0)) {
+ data &= ~BIT(0);
+ oct_csr_write(data, PKI_BUF_CTL(node));
+
+ /* Wait until the pki has finished processing packets */
+ timeout = 10000;
+ do {
+ data = oct_csr_read(PKI_SFT_RST(node));
+ if (data & BIT(32))
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout)
+ pr_warn("octeon3_pki: disable timeout\n");
+ }
+
+ /* Free all prefetched fpa buffers back to the fpa */
+ data = oct_csr_read(PKI_BUF_CTL(node));
+ data |= BIT(5) | BIT(9);
+ oct_csr_write(data, PKI_BUF_CTL(node));
+ /* Dummy read to get the register write to take effect */
+ data = oct_csr_read(PKI_BUF_CTL(node));
+
+ /* Now we can reset the pki */
+ data = oct_csr_read(PKI_SFT_RST(node));
+ data |= BIT(0);
+ oct_csr_write(data, PKI_SFT_RST(node));
+ timeout = 10000;
+ do {
+ data = oct_csr_read(PKI_SFT_RST(node));
+ if ((data & BIT(63)) == 0)
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout)
+ pr_warn("octeon3_pki: reset timeout\n");
+
+ /* Free all the allocated resources. We should only free the
+ * resources allocated by us (TODO).
+ */
+ for (i = 0; i < PKI_NUM_STYLE; i++) {
+ strncpy((char *)&tag.lo, "cvm_styl", 8);
+ snprintf(buf, 16, "e_%d.....", node);
+ memcpy(&tag.hi, buf, 8);
+ res_mgr_free(tag, i);
+ }
+ for (i = 0; i < PKI_NUM_QPG_ENTRY; i++) {
+ strncpy((char *)&tag.lo, "cvm_qpge", 8);
+ snprintf(buf, 16, "t_%d.....", node);
+ memcpy(&tag.hi, buf, 8);
+ res_mgr_free(tag, i);
+ }
+ for (i = 0; i < get_num_clusters(); i++) {
+ for (j = 0; j < MAX_BANKS; j++) {
+ strncpy((char *)&tag.lo, "cvm_pcam", 8);
+ snprintf(buf, 16, "_%d%d%d....", node, i, j);
+ memcpy(&tag.hi, buf, 8);
+ for (k = 0; k < MAX_BANK_ENTRIES; k++)
+ res_mgr_free(tag, k);
+ }
+ }
+
+ /* Restore the registers back to their reset state. We should
+ * only reset the registers used by us (TODO).
+ */
+ for (i = 0; i < get_num_clusters(); i++) {
+ for (j = 0; j < MAX_PKNDS; j++) {
+ oct_csr_write(0, PKI_CL_PKIND_CFG(node, i, j));
+ oct_csr_write(0, PKI_CL_PKIND_STYLE(node, i, j));
+ oct_csr_write(0, PKI_CL_PKIND_SKIP(node, i, j));
+ oct_csr_write(0, PKI_CL_PKIND_L2_CUSTOM(node, i, j));
+ oct_csr_write(0, PKI_CL_PKIND_LG_CUSTOM(node, i, j));
+ }
+
+ for (j = 0; j < PKI_NUM_FINAL_STYLE; j++) {
+ oct_csr_write(0, PKI_CL_STYLE_CFG(node, i, j));
+ oct_csr_write(0, PKI_CL_STYLE_CFG2(node, i, j));
+ oct_csr_write(0, PKI_CLX_STYLEX_ALG(node, i, j));
+ }
+ }
+ for (i = 0; i < PKI_NUM_FINAL_STYLE; i++)
+ oct_csr_write((0x5 << 22) | 0x20, PKI_STYLE_BUF(node, i));
+}
+EXPORT_SYMBOL(octeon3_pki_shutdown);
+
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE(PKI_CLUSTER_FIRMWARE);
+MODULE_AUTHOR("Carlos Munoz <cmunoz@cavium.com>");
+MODULE_DESCRIPTION("Cavium, Inc. PKI management.");
diff --git a/drivers/net/ethernet/cavium/octeon/octeon3-pko.c b/drivers/net/ethernet/cavium/octeon/octeon3-pko.c
new file mode 100644
index 0000000..9207d0b
--- /dev/null
+++ b/drivers/net/ethernet/cavium/octeon/octeon3-pko.c
@@ -0,0 +1,1688 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2017 Cavium, Inc.
+ *
+ * Configuration and management of the PacKet Output (PKO) block.
+ */
+#include <linux/module.h>
+
+#include <asm/octeon/octeon.h>
+
+#include "octeon3.h"
+
+#define MAX_OUTPUT_MAC 28
+#define MAX_FIFO_GRP 8
+
+#define FIFO_SIZE 2560
+
+/* Registers are accessed via xkphys */
+#define PKO_BASE 0x1540000000000ull
+#define PKO_ADDR(node) (SET_XKPHYS + NODE_OFFSET(node) + \
+ PKO_BASE)
+
+#define PKO_L1_SQ_SHAPE(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x000010)
+#define PKO_L1_SQ_LINK(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x000038)
+#define PKO_DQ_WM_CTL(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x000040)
+#define PKO_L1_SQ_TOPOLOGY(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x080000)
+#define PKO_L2_SQ_SCHEDULE(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x080008)
+#define PKO_L3_L2_SQ_CHANNEL(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x080038)
+#define PKO_CHANNEL_LEVEL(n) (PKO_ADDR(n) + 0x0800f0)
+#define PKO_SHAPER_CFG(n) (PKO_ADDR(n) + 0x0800f8)
+#define PKO_L2_SQ_TOPOLOGY(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x100000)
+#define PKO_L3_SQ_SCHEDULE(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x100008)
+#define PKO_L3_SQ_TOPOLOGY(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x180000)
+#define PKO_L4_SQ_SCHEDULE(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x180008)
+#define PKO_L4_SQ_TOPOLOGY(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x200000)
+#define PKO_L5_SQ_SCHEDULE(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x200008)
+#define PKO_L5_SQ_TOPOLOGY(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x280000)
+#define PKO_DQ_SCHEDULE(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x280008)
+#define PKO_DQ_SW_XOFF(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x2800e0)
+#define PKO_DQ_TOPOLOGY(n, q) (PKO_ADDR(n) + ((q) << 9) + 0x300000)
+#define PKO_PDM_CFG(n) (PKO_ADDR(n) + 0x800000)
+#define PKO_PDM_DQ_MINPAD(n, q) (PKO_ADDR(n) + ((q) << 3) + 0x8f0000)
+#define PKO_MAC_CFG(n, m) (PKO_ADDR(n) + ((m) << 3) + 0x900000)
+#define PKO_PTF_STATUS(n, f) (PKO_ADDR(n) + ((f) << 3) + 0x900100)
+#define PKO_PTGF_CFG(n, g) (PKO_ADDR(n) + ((g) << 3) + 0x900200)
+#define PKO_PTF_IOBP_CFG(n) (PKO_ADDR(n) + 0x900300)
+#define PKO_MCI0_MAX_CRED(n, m) (PKO_ADDR(n) + ((m) << 3) + 0xa00000)
+#define PKO_MCI1_MAX_CRED(n, m) (PKO_ADDR(n) + ((m) << 3) + 0xa80000)
+#define PKO_LUT(n, c) (PKO_ADDR(n) + ((c) << 3) + 0xb00000)
+#define PKO_DPFI_STATUS(n) (PKO_ADDR(n) + 0xc00000)
+#define PKO_DPFI_FLUSH(n) (PKO_ADDR(n) + 0xc00008)
+#define PKO_DPFI_FPA_AURA(n) (PKO_ADDR(n) + 0xc00010)
+#define PKO_DPFI_ENA(n) (PKO_ADDR(n) + 0xc00018)
+#define PKO_STATUS(n) (PKO_ADDR(n) + 0xd00000)
+#define PKO_ENABLE(n) (PKO_ADDR(n) + 0xd00008)
+
+/* These levels mimic the pko internal linked queue structure */
+enum queue_level {
+ PQ = 1,
+ L2_SQ = 2,
+ L3_SQ = 3,
+ L4_SQ = 4,
+ L5_SQ = 5,
+ DQ = 6
+};
+
+enum pko_dqop_e {
+ DQOP_SEND,
+ DQOP_OPEN,
+ DQOP_CLOSE,
+ DQOP_QUERY
+};
+
+enum pko_dqstatus_e {
+ PASS = 0,
+ BADSTATE = 0x8,
+ NOFPABUF = 0x9,
+ NOPKOBUF = 0xa,
+ FAILRTNPTR = 0xb,
+ ALREADY = 0xc,
+ NOTCREATED = 0xd,
+ NOTEMPTY = 0xe,
+ SENDPKTDROP = 0xf
+};
+
+struct mac_info {
+ int fifo_cnt;
+ int prio;
+ int speed;
+ int fifo;
+ int num_lmacs;
+};
+
+struct fifo_grp_info {
+ int speed;
+ int size;
+};
+
+static const int lut_index_78xx[] = {
+ 0x200,
+ 0x240,
+ 0x280,
+ 0x2c0,
+ 0x300,
+ 0x340
+};
+
+static const int lut_index_73xx[] = {
+ 0x000,
+ 0x040,
+ 0x080
+};
+
+static enum queue_level max_sq_level(void)
+{
+ /* 73xx and 75xx only have 3 scheduler queue levels */
+ if (OCTEON_IS_MODEL(OCTEON_CN73XX) || OCTEON_IS_MODEL(OCTEON_CNF75XX))
+ return L3_SQ;
+
+ return L5_SQ;
+}
+
+static int get_num_fifos(void)
+{
+ if (OCTEON_IS_MODEL(OCTEON_CN73XX) || OCTEON_IS_MODEL(OCTEON_CNF75XX))
+ return 16;
+
+ return 28;
+}
+
+static int get_num_fifo_groups(void)
+{
+ if (OCTEON_IS_MODEL(OCTEON_CN73XX) || OCTEON_IS_MODEL(OCTEON_CNF75XX))
+ return 5;
+
+ return 8;
+}
+
+static int get_num_output_macs(void)
+{
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX))
+ return 28;
+ else if (OCTEON_IS_MODEL(OCTEON_CNF75XX))
+ return 10;
+ else if (OCTEON_IS_MODEL(OCTEON_CN73XX))
+ return 14;
+
+ return 0;
+}
+
+static int get_output_mac(int interface, int index,
+ enum octeon3_mac_type mac_type)
+{
+ int mac;
+
+ /* Output macs are hardcoded in the hardware. See PKO Output MACs
+ * section in the HRM.
+ */
+ if (OCTEON_IS_MODEL(OCTEON_CN73XX) || OCTEON_IS_MODEL(OCTEON_CNF75XX)) {
+ if (mac_type == SRIO_MAC)
+ mac = 4 + 2 * interface + index;
+ else
+ mac = 2 + 4 * interface + index;
+ } else {
+ mac = 4 + 4 * interface + index;
+ }
+
+ return mac;
+}
+
+static int get_num_port_queues(void)
+{
+ if (OCTEON_IS_MODEL(OCTEON_CN73XX) || OCTEON_IS_MODEL(OCTEON_CNF75XX))
+ return 16;
+
+ return 32;
+}
+
+static int allocate_queues(int node, enum queue_level level,
+ int num_queues, int *queues)
+{
+ struct global_resource_tag tag;
+ int max_queues = 0;
+ char buf[16];
+ int rc;
+
+ if (level == PQ) {
+ strncpy((char *)&tag.lo, "cvm_pkop", 8);
+ snprintf(buf, 16, "oq_%d....", node);
+ memcpy(&tag.hi, buf, 8);
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX))
+ max_queues = 32;
+ else
+ max_queues = 16;
+ } else if (level == L2_SQ) {
+ strncpy((char *)&tag.lo, "cvm_pkol", 8);
+ snprintf(buf, 16, "2q_%d....", node);
+ memcpy(&tag.hi, buf, 8);
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX))
+ max_queues = 512;
+ else
+ max_queues = 256;
+ } else if (level == L3_SQ) {
+ strncpy((char *)&tag.lo, "cvm_pkol", 8);
+ snprintf(buf, 16, "3q_%d....", node);
+ memcpy(&tag.hi, buf, 8);
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX))
+ max_queues = 512;
+ else
+ max_queues = 256;
+ } else if (level == L4_SQ) {
+ strncpy((char *)&tag.lo, "cvm_pkol", 8);
+ snprintf(buf, 16, "4q_%d....", node);
+ memcpy(&tag.hi, buf, 8);
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX))
+ max_queues = 1024;
+ else
+ max_queues = 0;
+ } else if (level == L5_SQ) {
+ strncpy((char *)&tag.lo, "cvm_pkol", 8);
+ snprintf(buf, 16, "5q_%d....", node);
+ memcpy(&tag.hi, buf, 8);
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX))
+ max_queues = 1024;
+ else
+ max_queues = 0;
+ } else if (level == DQ) {
+ strncpy((char *)&tag.lo, "cvm_pkod", 8);
+ snprintf(buf, 16, "eq_%d....", node);
+ memcpy(&tag.hi, buf, 8);
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX))
+ max_queues = 1024;
+ else
+ max_queues = 256;
+ }
+
+ res_mgr_create_resource(tag, max_queues);
+ rc = res_mgr_alloc_range(tag, -1, num_queues, false, queues);
+ if (rc < 0)
+ return rc;
+
+ return 0;
+}
+
+static void free_queues(int node, enum queue_level level,
+ int num_queues, const int *queues)
+{
+ struct global_resource_tag tag;
+ char buf[16];
+
+ if (level == PQ) {
+ strncpy((char *)&tag.lo, "cvm_pkop", 8);
+ snprintf(buf, 16, "oq_%d....", node);
+ memcpy(&tag.hi, buf, 8);
+ } else if (level == L2_SQ) {
+ strncpy((char *)&tag.lo, "cvm_pkol", 8);
+ snprintf(buf, 16, "2q_%d....", node);
+ memcpy(&tag.hi, buf, 8);
+ } else if (level == L3_SQ) {
+ strncpy((char *)&tag.lo, "cvm_pkol", 8);
+ snprintf(buf, 16, "3q_%d....", node);
+ memcpy(&tag.hi, buf, 8);
+ } else if (level == L4_SQ) {
+ strncpy((char *)&tag.lo, "cvm_pkol", 8);
+ snprintf(buf, 16, "4q_%d....", node);
+ memcpy(&tag.hi, buf, 8);
+ } else if (level == L5_SQ) {
+ strncpy((char *)&tag.lo, "cvm_pkol", 8);
+ snprintf(buf, 16, "5q_%d....", node);
+ memcpy(&tag.hi, buf, 8);
+ } else if (level == DQ) {
+ strncpy((char *)&tag.lo, "cvm_pkod", 8);
+ snprintf(buf, 16, "eq_%d....", node);
+ memcpy(&tag.hi, buf, 8);
+ }
+
+ res_mgr_free_range(tag, queues, num_queues);
+}
+
+static int port_queue_init(int node, int pq, int mac)
+{
+ u64 data;
+
+ data = mac << 16;
+ oct_csr_write(data, PKO_L1_SQ_TOPOLOGY(node, pq));
+
+ data = mac << 13;
+ oct_csr_write(data, PKO_L1_SQ_SHAPE(node, pq));
+
+ data = mac;
+ data <<= 44;
+ oct_csr_write(data, PKO_L1_SQ_LINK(node, pq));
+
+ return 0;
+}
+
+static int scheduler_queue_l2_init(int node, int queue, int parent_q)
+{
+ u64 data;
+
+ data = oct_csr_read(PKO_L1_SQ_TOPOLOGY(node, parent_q));
+ data &= ~(GENMASK_ULL(40, 32) | GENMASK_ULL(4, 1));
+ data |= (u64)queue << 32;
+ data |= 0xf << 1;
+ oct_csr_write(data, PKO_L1_SQ_TOPOLOGY(node, parent_q));
+
+ oct_csr_write(0, PKO_L2_SQ_SCHEDULE(node, queue));
+
+ data = parent_q << 16;
+ oct_csr_write(data, PKO_L2_SQ_TOPOLOGY(node, queue));
+
+ return 0;
+}
+
+static int scheduler_queue_l3_init(int node, int queue, int parent_q)
+{
+ u64 data;
+
+ data = oct_csr_read(PKO_L2_SQ_TOPOLOGY(node, parent_q));
+ data &= ~(GENMASK_ULL(40, 32) | GENMASK_ULL(4, 1));
+ data |= (u64)queue << 32;
+ data |= 0xf << 1;
+ oct_csr_write(data, PKO_L2_SQ_TOPOLOGY(node, parent_q));
+
+ oct_csr_write(0, PKO_L3_SQ_SCHEDULE(node, queue));
+
+ data = parent_q << 16;
+ oct_csr_write(data, PKO_L3_SQ_TOPOLOGY(node, queue));
+
+ return 0;
+}
+
+static int scheduler_queue_l4_init(int node, int queue, int parent_q)
+{
+ u64 data;
+
+ data = oct_csr_read(PKO_L3_SQ_TOPOLOGY(node, parent_q));
+ data &= ~(GENMASK_ULL(41, 32) | GENMASK_ULL(4, 1));
+ data |= (u64)queue << 32;
+ data |= 0xf << 1;
+ oct_csr_write(data, PKO_L3_SQ_TOPOLOGY(node, parent_q));
+
+ oct_csr_write(0, PKO_L4_SQ_SCHEDULE(node, queue));
+
+ data = parent_q << 16;
+ oct_csr_write(data, PKO_L4_SQ_TOPOLOGY(node, queue));
+
+ return 0;
+}
+
+static int scheduler_queue_l5_init(int node, int queue, int parent_q)
+{
+ u64 data;
+
+ data = oct_csr_read(PKO_L4_SQ_TOPOLOGY(node, parent_q));
+ data &= ~(GENMASK_ULL(41, 32) | GENMASK_ULL(4, 1));
+ data |= (u64)queue << 32;
+ data |= 0xf << 1;
+ oct_csr_write(data, PKO_L4_SQ_TOPOLOGY(node, parent_q));
+
+ oct_csr_write(0, PKO_L5_SQ_SCHEDULE(node, queue));
+
+ data = parent_q << 16;
+ oct_csr_write(data, PKO_L5_SQ_TOPOLOGY(node, queue));
+
+ return 0;
+}
+
+static int descriptor_queue_init(int node, const int *queue, int parent_q,
+ int num_dq)
+{
+ int rr_quantum;
+ int rr_prio;
+ u64 addr;
+ u64 data;
+ int prio;
+ int i;
+
+ /* Limit static priorities to the available prio field bits */
+ if (num_dq > 9) {
+ pr_err("octeon3-pko: Invalid number of dqs\n");
+ return -1;
+ }
+
+ prio = 0;
+
+ if (num_dq == 1) {
+ /* Single dq */
+ rr_prio = 0xf;
+ rr_quantum = 0x10;
+ } else {
+ /* Multiple dqs */
+ rr_prio = num_dq;
+ rr_quantum = 0;
+ }
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX))
+ addr = PKO_L5_SQ_TOPOLOGY(node, parent_q);
+ else
+ addr = PKO_L3_SQ_TOPOLOGY(node, parent_q);
+
+ data = oct_csr_read(addr);
+ data &= ~(GENMASK_ULL(41, 32) | GENMASK_ULL(4, 1));
+ data |= (u64)queue[0] << 32;
+ data |= rr_prio << 1;
+ oct_csr_write(data, addr);
+
+ for (i = 0; i < num_dq; i++) {
+ data = (prio << 24) | rr_quantum;
+ oct_csr_write(data, PKO_DQ_SCHEDULE(node, queue[i]));
+
+ data = parent_q << 16;
+ oct_csr_write(data, PKO_DQ_TOPOLOGY(node, queue[i]));
+
+ data = BIT(49);
+ oct_csr_write(data, PKO_DQ_WM_CTL(node, queue[i]));
+
+ if (prio << rr_prio)
+ prio++;
+ }
+
+ return 0;
+}
+
+static int map_channel(int node, int pq, int queue, int ipd_port)
+{
+ int lut_index = 0;
+ int table_index;
+ u64 data;
+
+ data = oct_csr_read(PKO_L3_L2_SQ_CHANNEL(node, queue));
+ data &= ~GENMASK_ULL(43, 32);
+ data |= (u64)ipd_port << 32;
+ oct_csr_write(data, PKO_L3_L2_SQ_CHANNEL(node, queue));
+
+ /* See PKO_LUT register description in the HRM for how to compose the
+ * lut_index.
+ */
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
+ table_index = ((ipd_port & 0xf00) - 0x800) >> 8;
+ lut_index = lut_index_78xx[table_index];
+ lut_index += ipd_port & 0xff;
+ } else if (OCTEON_IS_MODEL(OCTEON_CN73XX)) {
+ table_index = ((ipd_port & 0xf00) - 0x800) >> 8;
+ lut_index = lut_index_73xx[table_index];
+ lut_index += ipd_port & 0xff;
+ } else if (OCTEON_IS_MODEL(OCTEON_CNF75XX)) {
+ if ((ipd_port & 0xf00) != 0x800)
+ return -1;
+ lut_index = ipd_port & 0xff;
+ }
+
+ data = BIT(15);
+ data |= pq << 9;
+ data |= queue;
+ oct_csr_write(data, PKO_LUT(node, lut_index));
+
+ return 0;
+}
+
+static int open_dq(int node, int dq)
+{
+ enum pko_dqstatus_e status;
+ u64 *scratch_addr;
+ u64 *iobdma_addr;
+ u64 data;
+
+ /* Build the dq open query. See PKO_QUERY_DMA_S in the HRM for the
+ * query format.
+ */
+ data = (LMTDMA_SCR_OFFSET >> 3) << 56;
+ data |= 1ull << 48;
+ data |= 0x51ull << 40;
+ data |= (u64)node << 36;
+ data |= (u64)DQOP_OPEN << 32;
+ data |= dq << 16;
+
+ CVMX_SYNCWS;
+ preempt_disable();
+
+ /* Clear return location */
+ scratch_addr = (u64 *)(SCRATCH_BASE + LMTDMA_SCR_OFFSET);
+ *scratch_addr = ~0ull;
+
+ /* Issue pko lmtdma command */
+ iobdma_addr = (u64 *)(IOBDMA_ORDERED_IO_ADDR);
+ *iobdma_addr = data;
+
+ /* Wait for lmtdma command to complete and get response*/
+ CVMX_SYNCIOBDMA;
+ data = *scratch_addr;
+
+ preempt_enable();
+
+ /* See PKO_QUERY_RTN_S in the HRM for response format */
+ status = (data & GENMASK_ULL(63, 60)) >> 60;
+ if (status != PASS && status != ALREADY) {
+ pr_err("octeon3-pko: Failed to open dq\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static s64 query_dq(int node, int dq)
+{
+ enum pko_dqstatus_e status;
+ u64 *scratch_addr;
+ u64 *iobdma_addr;
+ s64 depth;
+ u64 data;
+
+ /* Build the dq open query. See PKO_QUERY_DMA_S in the HRM for the
+ * query format.
+ */
+ data = (LMTDMA_SCR_OFFSET >> 3) << 56;
+ data |= 1ull << 48;
+ data |= 0x51ull << 40;
+ data |= (u64)node << 36;
+ data |= (u64)DQOP_QUERY << 32;
+ data |= dq << 16;
+
+ CVMX_SYNCWS;
+ preempt_disable();
+
+ /* Clear return location */
+ scratch_addr = (u64 *)(SCRATCH_BASE + LMTDMA_SCR_OFFSET);
+ *scratch_addr = ~0ull;
+
+ /* Issue pko lmtdma command */
+ iobdma_addr = (u64 *)(IOBDMA_ORDERED_IO_ADDR);
+ *iobdma_addr = data;
+
+ /* Wait for lmtdma command to complete and get response*/
+ CVMX_SYNCIOBDMA;
+ data = *scratch_addr;
+
+ preempt_enable();
+
+ /* See PKO_QUERY_RTN_S in the HRM for response format */
+ status = (data & GENMASK_ULL(63, 60)) >> 60;
+ if (status != PASS) {
+ pr_err("octeon3-pko: Failed to query dq=%d\n", dq);
+ return -1;
+ }
+
+ depth = data & GENMASK_ULL(47, 0);
+
+ return depth;
+}
+
+static u64 close_dq(int node, int dq)
+{
+ enum pko_dqstatus_e status;
+ u64 *scratch_addr;
+ u64 *iobdma_addr;
+ u64 data;
+
+ /* Build the dq open query. See PKO_QUERY_DMA_S in the HRM for the
+ * query format.
+ */
+ data = (LMTDMA_SCR_OFFSET >> 3) << 56;
+ data |= 1ull << 48;
+ data |= 0x51ull << 40;
+ data |= (u64)node << 36;
+ data |= (u64)DQOP_CLOSE << 32;
+ data |= dq << 16;
+
+ CVMX_SYNCWS;
+ preempt_disable();
+
+ /* Clear return location */
+ scratch_addr = (u64 *)(SCRATCH_BASE + LMTDMA_SCR_OFFSET);
+ *scratch_addr = ~0ull;
+
+ /* Issue pko lmtdma command */
+ iobdma_addr = (u64 *)(IOBDMA_ORDERED_IO_ADDR);
+ *iobdma_addr = data;
+
+ /* Wait for lmtdma command to complete and get response*/
+ CVMX_SYNCIOBDMA;
+ data = *scratch_addr;
+
+ preempt_enable();
+
+ /* See PKO_QUERY_RTN_S in the HRM for response format */
+ status = (data & GENMASK_ULL(63, 60)) >> 60;
+ if (status != PASS) {
+ pr_err("octeon3-pko: Failed to close dq\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int get_78xx_fifos_required(int node, struct mac_info *macs)
+{
+ enum port_mode mode;
+ int fifo_cnt = 0;
+ int num_lmacs;
+ int index;
+ u64 data;
+ int prio;
+ int bgx;
+ int cnt;
+ int qlm;
+ int i;
+
+ /* The loopback mac gets 1 fifo by default */
+ macs[0].fifo_cnt = 1;
+ macs[0].speed = 1;
+ fifo_cnt += 1;
+
+ /* The dpi mac gets 1 fifo by default */
+ macs[1].fifo_cnt = 1;
+ macs[1].speed = 50;
+ fifo_cnt += 1;
+
+ /* The ilk macs get default number of fifos (module param) */
+ macs[2].fifo_cnt = ilk0_lanes <= 4 ? ilk0_lanes : 4;
+ macs[2].speed = 40;
+ fifo_cnt += macs[2].fifo_cnt;
+ macs[3].fifo_cnt = ilk1_lanes <= 4 ? ilk1_lanes : 4;
+ macs[3].speed = 40;
+ fifo_cnt += macs[3].fifo_cnt;
+
+ /* Assign fifos to the active bgx macs */
+ for (i = 4; i < get_num_output_macs(); i += 4) {
+ bgx = (i - 4) / 4;
+ qlm = bgx_port_get_qlm(node, bgx, 0);
+
+ data = oct_csr_read(GSER_CFG(node, qlm));
+ if (data & BIT(2)) {
+ data = oct_csr_read(BGX_CMR_TX_LMACS(node, bgx));
+ num_lmacs = data & 7;
+
+ for (index = 0; index < num_lmacs; index++) {
+ switch (num_lmacs) {
+ case 1:
+ macs[i + index].num_lmacs = 4;
+ break;
+ case 2:
+ macs[i + index].num_lmacs = 2;
+ break;
+ case 4:
+ default:
+ macs[i + index].num_lmacs = 1;
+ break;
+ }
+
+ mode = bgx_port_get_mode(node, bgx, 0);
+ switch (mode) {
+ case PORT_MODE_SGMII:
+ case PORT_MODE_RGMII:
+ macs[i + index].fifo_cnt = 1;
+ macs[i + index].prio = 1;
+ macs[i + index].speed = 1;
+ break;
+
+ case PORT_MODE_XAUI:
+ case PORT_MODE_RXAUI:
+ macs[i + index].fifo_cnt = 4;
+ macs[i + index].prio = 2;
+ macs[i + index].speed = 20;
+ break;
+
+ case PORT_MODE_10G_KR:
+ case PORT_MODE_XFI:
+ macs[i + index].fifo_cnt = 4;
+ macs[i + index].prio = 2;
+ macs[i + index].speed = 10;
+ break;
+
+ case PORT_MODE_40G_KR4:
+ case PORT_MODE_XLAUI:
+ macs[i + index].fifo_cnt = 4;
+ macs[i + index].prio = 3;
+ macs[i + index].speed = 40;
+ break;
+
+ default:
+ macs[i + index].fifo_cnt = 0;
+ macs[i + index].prio = 0;
+ macs[i + index].speed = 0;
+ macs[i + index].num_lmacs = 0;
+ break;
+ }
+
+ fifo_cnt += macs[i + index].fifo_cnt;
+ }
+ }
+ }
+
+ /* If more fifos than available were assigned, reduce the number of
+ * fifos until within limit. Start with the lowest priority macs with 4
+ * fifos.
+ */
+ prio = 1;
+ cnt = 4;
+ while (fifo_cnt > get_num_fifos()) {
+ for (i = 0; i < get_num_output_macs(); i++) {
+ if (macs[i].prio == prio && macs[i].fifo_cnt == cnt) {
+ macs[i].fifo_cnt >>= 1;
+ fifo_cnt -= macs[i].fifo_cnt;
+ }
+
+ if (fifo_cnt <= get_num_fifos())
+ break;
+ }
+
+ if (prio >= 3) {
+ prio = 1;
+ cnt >>= 1;
+ } else {
+ prio++;
+ }
+
+ if (cnt == 0)
+ break;
+ }
+
+ /* Assign left over fifos to dpi */
+ if (get_num_fifos() - fifo_cnt > 0) {
+ if (get_num_fifos() - fifo_cnt >= 3) {
+ macs[1].fifo_cnt += 3;
+ fifo_cnt -= 3;
+ } else {
+ macs[1].fifo_cnt += 1;
+ fifo_cnt -= 1;
+ }
+ }
+
+ return 0;
+}
+
+static int get_75xx_fifos_required(int node, struct mac_info *macs)
+{
+ enum port_mode mode;
+ int fifo_cnt = 0;
+ int index;
+ u64 data;
+ int prio;
+ int bgx;
+ int cnt;
+ int qlm;
+ int i;
+
+ /* The loopback mac gets 1 fifo by default */
+ macs[0].fifo_cnt = 1;
+ macs[0].speed = 1;
+ fifo_cnt += 1;
+
+ /* The dpi mac gets 1 fifo by default */
+ macs[1].fifo_cnt = 1;
+ macs[1].speed = 50;
+ fifo_cnt += 1;
+
+ /* Assign fifos to the active bgx macs */
+ bgx = 0;
+ for (i = 2; i < 6; i++) {
+ index = i - 2;
+ qlm = bgx_port_get_qlm(node, bgx, index);
+ data = oct_csr_read(GSER_CFG(node, qlm));
+ if (data & BIT(2)) {
+ macs[i].num_lmacs = 1;
+
+ mode = bgx_port_get_mode(node, bgx, index);
+ switch (mode) {
+ case PORT_MODE_SGMII:
+ case PORT_MODE_RGMII:
+ macs[i].fifo_cnt = 1;
+ macs[i].prio = 1;
+ macs[i].speed = 1;
+ break;
+
+ case PORT_MODE_10G_KR:
+ case PORT_MODE_XFI:
+ macs[i].fifo_cnt = 4;
+ macs[i].prio = 2;
+ macs[i].speed = 10;
+ break;
+
+ default:
+ macs[i].fifo_cnt = 0;
+ macs[i].prio = 0;
+ macs[i].speed = 0;
+ macs[i].num_lmacs = 0;
+ break;
+ }
+
+ fifo_cnt += macs[i].fifo_cnt;
+ }
+ }
+
+ /* If more fifos than available were assigned, reduce the number of
+ * fifos until within limit. Start with the lowest priority macs with 4
+ * fifos.
+ */
+ prio = 1;
+ cnt = 4;
+ while (fifo_cnt > get_num_fifos()) {
+ for (i = 0; i < get_num_output_macs(); i++) {
+ if (macs[i].prio == prio && macs[i].fifo_cnt == cnt) {
+ macs[i].fifo_cnt >>= 1;
+ fifo_cnt -= macs[i].fifo_cnt;
+ }
+
+ if (fifo_cnt <= get_num_fifos())
+ break;
+ }
+
+ if (prio >= 3) {
+ prio = 1;
+ cnt >>= 1;
+ } else {
+ prio++;
+ }
+
+ if (cnt == 0)
+ break;
+ }
+
+ /* Assign left over fifos to dpi */
+ if (get_num_fifos() - fifo_cnt > 0) {
+ if (get_num_fifos() - fifo_cnt >= 3) {
+ macs[1].fifo_cnt += 3;
+ fifo_cnt -= 3;
+ } else {
+ macs[1].fifo_cnt += 1;
+ fifo_cnt -= 1;
+ }
+ }
+
+ return 0;
+}
+
+static int get_73xx_fifos_required(int node, struct mac_info *macs)
+{
+ enum port_mode mode;
+ int fifo_cnt = 0;
+ int num_lmacs;
+ int index;
+ u64 data;
+ int prio;
+ int bgx;
+ int cnt;
+ int qlm;
+ int i;
+
+ /* The loopback mac gets 1 fifo by default */
+ macs[0].fifo_cnt = 1;
+ macs[0].speed = 1;
+ fifo_cnt += 1;
+
+ /* The dpi mac gets 1 fifo by default */
+ macs[1].fifo_cnt = 1;
+ macs[1].speed = 50;
+ fifo_cnt += 1;
+
+ /* Assign fifos to the active bgx macs */
+ for (i = 2; i < get_num_output_macs(); i += 4) {
+ bgx = (i - 2) / 4;
+ qlm = bgx_port_get_qlm(node, bgx, 0);
+ data = oct_csr_read(GSER_CFG(node, qlm));
+
+ /* Bgx2 can be connected to dlm 5, 6, or both */
+ if (bgx == 2) {
+ if (!(data & BIT(2))) {
+ qlm = bgx_port_get_qlm(node, bgx, 2);
+ data = oct_csr_read(GSER_CFG(node, qlm));
+ }
+ }
+
+ if (data & BIT(2)) {
+ data = oct_csr_read(BGX_CMR_TX_LMACS(node, bgx));
+ num_lmacs = data & 7;
+
+ for (index = 0; index < num_lmacs; index++) {
+ switch (num_lmacs) {
+ case 1:
+ macs[i + index].num_lmacs = 4;
+ break;
+ case 2:
+ macs[i + index].num_lmacs = 2;
+ break;
+ case 4:
+ default:
+ macs[i + index].num_lmacs = 1;
+ break;
+ }
+
+ mode = bgx_port_get_mode(node, bgx, index);
+ switch (mode) {
+ case PORT_MODE_SGMII:
+ case PORT_MODE_RGMII:
+ macs[i + index].fifo_cnt = 1;
+ macs[i + index].prio = 1;
+ macs[i + index].speed = 1;
+ break;
+
+ case PORT_MODE_XAUI:
+ case PORT_MODE_RXAUI:
+ macs[i + index].fifo_cnt = 4;
+ macs[i + index].prio = 2;
+ macs[i + index].speed = 20;
+ break;
+
+ case PORT_MODE_10G_KR:
+ case PORT_MODE_XFI:
+ macs[i + index].fifo_cnt = 4;
+ macs[i + index].prio = 2;
+ macs[i + index].speed = 10;
+ break;
+
+ case PORT_MODE_40G_KR4:
+ case PORT_MODE_XLAUI:
+ macs[i + index].fifo_cnt = 4;
+ macs[i + index].prio = 3;
+ macs[i + index].speed = 40;
+ break;
+
+ default:
+ macs[i + index].fifo_cnt = 0;
+ macs[i + index].prio = 0;
+ macs[i + index].speed = 0;
+ break;
+ }
+
+ fifo_cnt += macs[i + index].fifo_cnt;
+ }
+ }
+ }
+
+ /* If more fifos than available were assigned, reduce the number of
+ * fifos until within limit. Start with the lowest priority macs with 4
+ * fifos.
+ */
+ prio = 1;
+ cnt = 4;
+ while (fifo_cnt > get_num_fifos()) {
+ for (i = 0; i < get_num_output_macs(); i++) {
+ if (macs[i].prio == prio && macs[i].fifo_cnt == cnt) {
+ macs[i].fifo_cnt >>= 1;
+ fifo_cnt -= macs[i].fifo_cnt;
+ }
+
+ if (fifo_cnt <= get_num_fifos())
+ break;
+ }
+
+ if (prio >= 3) {
+ prio = 1;
+ cnt >>= 1;
+ } else {
+ prio++;
+ }
+
+ if (cnt == 0)
+ break;
+ }
+
+ /* Assign left over fifos to dpi */
+ if (get_num_fifos() - fifo_cnt > 0) {
+ if (get_num_fifos() - fifo_cnt >= 3) {
+ macs[1].fifo_cnt += 3;
+ fifo_cnt -= 3;
+ } else {
+ macs[1].fifo_cnt += 1;
+ fifo_cnt -= 1;
+ }
+ }
+
+ return 0;
+}
+
+static int setup_macs(int node)
+{
+ struct fifo_grp_info fifo_grp[MAX_FIFO_GRP];
+ struct mac_info macs[MAX_OUTPUT_MAC];
+ u64 data;
+ int fifo;
+ int size;
+ int cnt;
+ int grp;
+ int i;
+
+ memset(macs, 0, sizeof(macs));
+ memset(fifo_grp, 0, sizeof(fifo_grp));
+
+ /* Get the number of fifos required by each mac */
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
+ get_78xx_fifos_required(node, macs);
+ } else if (OCTEON_IS_MODEL(OCTEON_CNF75XX)) {
+ get_75xx_fifos_required(node, macs);
+ } else if (OCTEON_IS_MODEL(OCTEON_CN73XX)) {
+ get_73xx_fifos_required(node, macs);
+ } else {
+ pr_err("octeon3-pko: Unsupported board type\n");
+ return -1;
+ }
+
+ /* Assign fifos to each mac. Start with macs requiring 4 fifos */
+ fifo = 0;
+ for (cnt = 4; cnt > 0; cnt >>= 1) {
+ for (i = 0; i < get_num_output_macs(); i++) {
+ if (macs[i].fifo_cnt != cnt)
+ continue;
+
+ macs[i].fifo = fifo;
+ grp = fifo / 4;
+
+ fifo_grp[grp].speed += macs[i].speed;
+
+ if (cnt == 4) {
+ /* 10, 0, 0, 0 */
+ fifo_grp[grp].size = 4;
+ } else if (cnt == 2) {
+ /* 5, 0, 5, 0 */
+ fifo_grp[grp].size = 3;
+ } else if (cnt == 1) {
+ if ((fifo & 0x2) && fifo_grp[grp].size == 3) {
+ /* 5, 0, 2.5, 2.5 */
+ fifo_grp[grp].size = 1;
+ } else {
+ /* 2.5, 2.5, 2.5, 2.5 */
+ fifo_grp[grp].size = 0;
+ }
+ }
+
+ fifo += cnt;
+ }
+ }
+
+ /* Configure the fifo groups */
+ for (i = 0; i < get_num_fifo_groups(); i++) {
+ data = oct_csr_read(PKO_PTGF_CFG(node, i));
+ size = data & GENMASK_ULL(2, 0);
+ if (size != fifo_grp[i].size)
+ data |= BIT(6);
+ data &= ~GENMASK_ULL(2, 0);
+ data |= fifo_grp[i].size;
+
+ data &= ~GENMASK_ULL(5, 3);
+ if (fifo_grp[i].speed >= 40) {
+ if (fifo_grp[i].size >= 3) {
+ /* 50 Gbps */
+ data |= 0x3 << 3;
+ } else {
+ /* 25 Gbps */
+ data |= 0x2 << 3;
+ }
+ } else if (fifo_grp[i].speed >= 20) {
+ /* 25 Gbps */
+ data |= 0x2 << 3;
+ } else if (fifo_grp[i].speed >= 10) {
+ /* 12.5 Gbps */
+ data |= 0x1 << 3;
+ }
+ oct_csr_write(data, PKO_PTGF_CFG(node, i));
+ data &= ~BIT(6);
+ oct_csr_write(data, PKO_PTGF_CFG(node, i));
+ }
+
+ /* Configure the macs with their assigned fifo */
+ for (i = 0; i < get_num_output_macs(); i++) {
+ data = oct_csr_read(PKO_MAC_CFG(node, i));
+ data &= ~GENMASK_ULL(4, 0);
+ if (!macs[i].fifo_cnt)
+ data |= 0x1f;
+ else
+ data |= macs[i].fifo;
+ oct_csr_write(data, PKO_MAC_CFG(node, i));
+ }
+
+ /* Setup mci0/mci1/skid credits */
+ for (i = 0; i < get_num_output_macs(); i++) {
+ int fifo_credit;
+ int skid_credit;
+ int mac_credit;
+
+ if (!macs[i].fifo_cnt)
+ continue;
+
+ if (i == 0) {
+ /* Loopback */
+ mac_credit = 4 * 1024;
+ skid_credit = 0;
+ } else if (i == 1) {
+ /* Dpi */
+ mac_credit = 2 * 1024;
+ skid_credit = 0;
+ } else if (OCTEON_IS_MODEL(OCTEON_CN78XX) && ((i == 2 || i == 3))) {
+ /* ILK */
+ mac_credit = 4 * 1024;
+ skid_credit = 0;
+ } else if (OCTEON_IS_MODEL(OCTEON_CNF75XX) && ((i >= 6 && i <= 9))) {
+ /* Srio */
+ mac_credit = 1024 / 2;
+ skid_credit = 0;
+ } else {
+ /* Bgx */
+ mac_credit = macs[i].num_lmacs * 8 * 1024;
+ skid_credit = macs[i].num_lmacs * 256;
+ }
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X)) {
+ fifo_credit = macs[i].fifo_cnt * FIFO_SIZE;
+ data = (fifo_credit + mac_credit) / 16;
+ oct_csr_write(data, PKO_MCI0_MAX_CRED(node, i));
+ }
+
+ data = mac_credit / 16;
+ oct_csr_write(data, PKO_MCI1_MAX_CRED(node, i));
+
+ data = oct_csr_read(PKO_MAC_CFG(node, i));
+ data &= ~GENMASK_ULL(6, 5);
+ data |= ((skid_credit / 256) >> 1) << 5;
+ oct_csr_write(data, PKO_MAC_CFG(node, i));
+ }
+
+ return 0;
+}
+
+static int hw_init_global(int node, int aura)
+{
+ int timeout;
+ u64 data;
+
+ data = oct_csr_read(PKO_ENABLE(node));
+ if (data & BIT(0)) {
+ pr_info("octeon3-pko: Pko already enabled on node %d\n", node);
+ return 0;
+ }
+
+ /* Enable color awareness */
+ data = oct_csr_read(PKO_SHAPER_CFG(node));
+ data |= BIT(1);
+ oct_csr_write(data, PKO_SHAPER_CFG(node));
+
+ /* Clear flush command */
+ oct_csr_write(0, PKO_DPFI_FLUSH(node));
+
+ /* Set the aura number */
+ data = (node << 10) | aura;
+ oct_csr_write(data, PKO_DPFI_FPA_AURA(node));
+
+ data = BIT(0);
+ oct_csr_write(data, PKO_DPFI_ENA(node));
+
+ /* Wait until all pointers have been returned */
+ timeout = 100000;
+ do {
+ data = oct_csr_read(PKO_STATUS(node));
+ if (data & BIT(63))
+ break;
+ udelay(1);
+ timeout--;
+ } while (timeout);
+ if (!timeout) {
+ pr_err("octeon3-pko: Pko dfpi failed on node %d\n", node);
+ return -1;
+ }
+
+ /* Set max outstanding requests in IOBP for any FIFO.*/
+ data = oct_csr_read(PKO_PTF_IOBP_CFG(node));
+ data &= ~GENMASK_ULL(6, 0);
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX))
+ data |= 0x10;
+ else
+ data |= 3;
+ oct_csr_write(data, PKO_PTF_IOBP_CFG(node));
+
+ /* Set minimum packet size per Ethernet standard */
+ data = 0x3c << 3;
+ oct_csr_write(data, PKO_PDM_CFG(node));
+
+ /* Initialize macs and fifos */
+ setup_macs(node);
+
+ /* Enable pko */
+ data = BIT(0);
+ oct_csr_write(data, PKO_ENABLE(node));
+
+ /* Verify pko is ready */
+ data = oct_csr_read(PKO_STATUS(node));
+ if (!(data & BIT(63))) {
+ pr_err("octeon3_pko: pko is not ready\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int hw_exit_global(int node)
+{
+ int timeout;
+ u64 data;
+ int i;
+
+ /* Wait until there are no in-flight packets */
+ for (i = 0; i < get_num_fifos(); i++) {
+ data = oct_csr_read(PKO_PTF_STATUS(node, i));
+ if ((data & GENMASK_ULL(4, 0)) == 0x1f)
+ continue;
+
+ timeout = 10000;
+ do {
+ if (!(data & GENMASK_ULL(11, 5)))
+ break;
+ udelay(1);
+ timeout--;
+ data = oct_csr_read(PKO_PTF_STATUS(node, i));
+ } while (timeout);
+ if (!timeout) {
+ pr_err("octeon3-pko: Timeout in-flight fifo\n");
+ return -1;
+ }
+ }
+
+ /* Disable pko */
+ oct_csr_write(0, PKO_ENABLE(node));
+
+ /* Reset all port queues to the virtual mac */
+ for (i = 0; i < get_num_port_queues(); i++) {
+ data = get_num_output_macs() << 16;
+ oct_csr_write(data, PKO_L1_SQ_TOPOLOGY(node, i));
+
+ data = get_num_output_macs() << 13;
+ oct_csr_write(data, PKO_L1_SQ_SHAPE(node, i));
+
+ data = (u64)get_num_output_macs() << 48;
+ oct_csr_write(data, PKO_L1_SQ_LINK(node, i));
+ }
+
+ /* Reset all output macs */
+ for (i = 0; i < get_num_output_macs(); i++) {
+ data = 0x1f;
+ oct_csr_write(data, PKO_MAC_CFG(node, i));
+ }
+
+ /* Reset all fifo groups */
+ for (i = 0; i < get_num_fifo_groups(); i++) {
+ data = oct_csr_read(PKO_PTGF_CFG(node, i));
+ /* Simulator asserts if an unused group is reset */
+ if (data == 0)
+ continue;
+ data = BIT(6);
+ oct_csr_write(data, PKO_PTGF_CFG(node, i));
+ }
+
+ /* Return cache pointers to fpa */
+ data = BIT(0);
+ oct_csr_write(data, PKO_DPFI_FLUSH(node));
+ timeout = 10000;
+ do {
+ data = oct_csr_read(PKO_DPFI_STATUS(node));
+ if (data & BIT(0))
+ break;
+ udelay(1);
+ timeout--;
+ } while (timeout);
+ if (!timeout) {
+ pr_err("octeon3-pko: Timeout flushing cache\n");
+ return -1;
+ }
+ oct_csr_write(0, PKO_DPFI_ENA(node));
+ oct_csr_write(0, PKO_DPFI_FLUSH(node));
+
+ return 0;
+}
+
+static int virtual_mac_config(int node)
+{
+ enum queue_level level;
+ int parent_q;
+ int num_dq;
+ int dq[8];
+ int queue;
+ int vmac;
+ int pq;
+ int i;
+ int rc;
+
+ /* The virtual mac is after the last output mac. Note: for the 73xx it
+ * might be 2 after the last output mac (15).
+ */
+ vmac = get_num_output_macs();
+
+ /* Allocate a port queue */
+ rc = allocate_queues(node, PQ, 1, &pq);
+ if (rc < 0) {
+ pr_err("octeon3-pko: Failed to allocate port queue\n");
+ return rc;
+ }
+
+ /* Connect the port queue to the output mac */
+ port_queue_init(node, pq, vmac);
+
+ parent_q = pq;
+ for (level = L2_SQ; level <= max_sq_level(); level++) {
+ rc = allocate_queues(node, level, 1, &queue);
+ if (rc < 0) {
+ pr_err("octeon3-pko: Failed to allocate queue\n");
+ return rc;
+ }
+
+ switch (level) {
+ case L2_SQ:
+ scheduler_queue_l2_init(node, queue, parent_q);
+ break;
+ case L3_SQ:
+ scheduler_queue_l3_init(node, queue, parent_q);
+ break;
+ case L4_SQ:
+ scheduler_queue_l4_init(node, queue, parent_q);
+ break;
+ case L5_SQ:
+ scheduler_queue_l5_init(node, queue, parent_q);
+ break;
+ default:
+ break;
+ }
+
+ parent_q = queue;
+ }
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_0))
+ num_dq = 8;
+ else
+ num_dq = 1;
+
+ rc = allocate_queues(node, DQ, num_dq, dq);
+ if (rc < 0) {
+ pr_err("octeon3-pko: Failed to allocate description queues\n");
+ return rc;
+ }
+
+ /* By convention the dq must be zero */
+ if (dq[0] != 0) {
+ pr_err("octeon3-pko: Failed to reserve description queues\n");
+ return -1;
+ }
+ descriptor_queue_init(node, dq, parent_q, num_dq);
+
+ /* Open the dqs */
+ for (i = 0; i < num_dq; i++)
+ open_dq(node, dq[i]);
+
+ return 0;
+}
+
+static int drain_dq(int node, int dq)
+{
+ int timeout;
+ u64 data;
+ s64 rc;
+
+ data = BIT(2) | BIT(1);
+ oct_csr_write(data, PKO_DQ_SW_XOFF(node, dq));
+
+ usleep_range(1000, 2000);
+
+ data = 0;
+ oct_csr_write(data, PKO_DQ_SW_XOFF(node, dq));
+
+ /* Wait for the dq to drain */
+ timeout = 10000;
+ do {
+ rc = query_dq(node, dq);
+ if (!rc)
+ break;
+ else if (rc < 0)
+ return rc;
+ udelay(1);
+ timeout--;
+ } while (timeout);
+ if (!timeout) {
+ pr_err("octeon3-pko: Timeout waiting for dq to drain\n");
+ return -1;
+ }
+
+ /* Close the queue anf free internal buffers */
+ close_dq(node, dq);
+
+ return 0;
+}
+
+int octeon3_pko_exit_global(int node)
+{
+ int num_dq;
+ int dq[8];
+ int i;
+
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_0))
+ num_dq = 8;
+ else
+ num_dq = 1;
+
+ /* Shutdown the virtual/null interface */
+ for (i = 0; i < ARRAY_SIZE(dq); i++)
+ dq[i] = i;
+ octeon3_pko_interface_uninit(node, dq, num_dq);
+
+ /* Shutdown pko */
+ hw_exit_global(node);
+
+ return 0;
+}
+EXPORT_SYMBOL(octeon3_pko_exit_global);
+
+int octeon3_pko_init_global(int node, int aura)
+{
+ int rc;
+
+ rc = hw_init_global(node, aura);
+ if (rc)
+ return rc;
+
+ /* Channel credit level at level 2 */
+ oct_csr_write(0, PKO_CHANNEL_LEVEL(node));
+
+ /* Configure the null mac */
+ rc = virtual_mac_config(node);
+ if (rc)
+ return rc;
+
+ return 0;
+}
+EXPORT_SYMBOL(octeon3_pko_init_global);
+
+int octeon3_pko_set_mac_options(int node, int interface, int index,
+ enum octeon3_mac_type mac_type,
+ bool fcs_en, bool pad_en, int fcs_sop_off)
+{
+ int fifo_num;
+ u64 data;
+ int mac;
+
+ mac = get_output_mac(interface, index, mac_type);
+
+ data = oct_csr_read(PKO_MAC_CFG(node, mac));
+ fifo_num = data & GENMASK_ULL(4, 0);
+ if (fifo_num == 0x1f) {
+ pr_err("octeon3_pko: mac not configured %d:%d:%d\n",
+ node, interface, index);
+ return -ENODEV;
+ }
+
+ /* Some silicon requires fifo_num=0x1f to change padding, fcs */
+ data &= ~GENMASK_ULL(4, 0);
+ data |= 0x1f;
+
+ data &= ~(BIT(16) | BIT(15) | GENMASK_ULL(14, 7));
+ if (pad_en)
+ data |= BIT(16);
+ if (fcs_en)
+ data |= BIT(15);
+ if (fcs_sop_off)
+ data |= fcs_sop_off << 7;
+
+ oct_csr_write(data, PKO_MAC_CFG(node, mac));
+
+ data &= ~GENMASK_ULL(4, 0);
+ data |= fifo_num;
+ oct_csr_write(data, PKO_MAC_CFG(node, mac));
+
+ return 0;
+}
+EXPORT_SYMBOL(octeon3_pko_set_mac_options);
+
+int octeon3_pko_get_fifo_size(int node, int interface, int index,
+ enum octeon3_mac_type mac_type)
+{
+ int fifo_grp;
+ int fifo_off;
+ u64 data;
+ int size;
+ int mac;
+
+ /* Set fifo size to 2.4 KB */
+ size = FIFO_SIZE;
+
+ mac = get_output_mac(interface, index, mac_type);
+
+ data = oct_csr_read(PKO_MAC_CFG(node, mac));
+ if ((data & GENMASK_ULL(4, 0)) == 0x1f) {
+ pr_err("octeon3_pko: mac not configured %d:%d:%d\n",
+ node, interface, index);
+ return -ENODEV;
+ }
+ fifo_grp = (data & GENMASK_ULL(4, 0)) >> 2;
+ fifo_off = data & GENMASK_ULL(1, 0);
+
+ data = oct_csr_read(PKO_PTGF_CFG(node, fifo_grp));
+ data &= GENMASK_ULL(2, 0);
+ switch (data) {
+ case 0:
+ /* 2.5l, 2.5k, 2.5k, 2.5k */
+ break;
+ case 1:
+ /* 5.0k, 0.0k, 2.5k, 2.5k */
+ if (fifo_off == 0)
+ size *= 2;
+ if (fifo_off == 1)
+ size = 0;
+ break;
+ case 2:
+ /* 2.5k, 2.5k, 5.0k, 0.0k */
+ if (fifo_off == 2)
+ size *= 2;
+ if (fifo_off == 3)
+ size = 0;
+ break;
+ case 3:
+ /* 5k, 0, 5k, 0 */
+ if ((fifo_off & 1) != 0)
+ size = 0;
+ size *= 2;
+ break;
+ case 4:
+ /* 10k, 0, 0, 0 */
+ if (fifo_off != 0)
+ size = 0;
+ size *= 4;
+ break;
+ default:
+ size = -1;
+ }
+
+ return size;
+}
+EXPORT_SYMBOL(octeon3_pko_get_fifo_size);
+
+int octeon3_pko_activate_dq(int node, int dq, int cnt)
+{
+ int rc = 0;
+ u64 data;
+ int i;
+
+ for (i = 0; i < cnt; i++) {
+ rc = open_dq(node, dq + i);
+ if (rc)
+ break;
+
+ data = oct_csr_read(PKO_PDM_DQ_MINPAD(node, dq + i));
+ data &= ~BIT(0);
+ oct_csr_write(data, PKO_PDM_DQ_MINPAD(node, dq + i));
+ }
+
+ return rc;
+}
+EXPORT_SYMBOL(octeon3_pko_activate_dq);
+
+int octeon3_pko_interface_init(int node, int interface, int index,
+ enum octeon3_mac_type mac_type, int ipd_port)
+{
+ enum queue_level level;
+ int parent_q;
+ int queue;
+ int mac;
+ int pq;
+ int rc;
+
+ mac = get_output_mac(interface, index, mac_type);
+
+ /* Allocate a port queue for this interface */
+ rc = allocate_queues(node, PQ, 1, &pq);
+ if (rc < 0) {
+ pr_err("octeon3-pko: Failed to allocate port queue\n");
+ return rc;
+ }
+
+ /* Connect the port queue to the output mac */
+ port_queue_init(node, pq, mac);
+
+ /* Link scheduler queues to the port queue */
+ parent_q = pq;
+ for (level = L2_SQ; level <= max_sq_level(); level++) {
+ rc = allocate_queues(node, level, 1, &queue);
+ if (rc < 0) {
+ pr_err("octeon3-pko: Failed to allocate queue\n");
+ return rc;
+ }
+
+ switch (level) {
+ case L2_SQ:
+ scheduler_queue_l2_init(node, queue, parent_q);
+ map_channel(node, pq, queue, ipd_port);
+ break;
+ case L3_SQ:
+ scheduler_queue_l3_init(node, queue, parent_q);
+ break;
+ case L4_SQ:
+ scheduler_queue_l4_init(node, queue, parent_q);
+ break;
+ case L5_SQ:
+ scheduler_queue_l5_init(node, queue, parent_q);
+ break;
+ default:
+ break;
+ }
+
+ parent_q = queue;
+ }
+
+ /* Link the descriptor queue */
+ rc = allocate_queues(node, DQ, 1, &queue);
+ if (rc < 0) {
+ pr_err("octeon3-pko: Failed to allocate descriptor queue\n");
+ return rc;
+ }
+ descriptor_queue_init(node, &queue, parent_q, 1);
+
+ return queue;
+}
+EXPORT_SYMBOL(octeon3_pko_interface_init);
+
+int octeon3_pko_interface_uninit(int node, const int *dq, int num_dq)
+{
+ enum queue_level level;
+ int parent_q;
+ int queue;
+ u64 addr;
+ u64 data;
+ int rc;
+ int i;
+
+ /* Drain all dqs */
+ for (i = 0; i < num_dq; i++) {
+ rc = drain_dq(node, dq[i]);
+ if (rc)
+ return rc;
+
+ /* Free the dq */
+ data = oct_csr_read(PKO_DQ_TOPOLOGY(node, dq[i]));
+ parent_q = (data & GENMASK_ULL(25, 16)) >> 16;
+ free_queues(node, DQ, 1, &dq[i]);
+
+ /* Free all the scheduler queues */
+ queue = parent_q;
+ for (level = max_sq_level(); (signed int)level >= PQ; level--) {
+ switch (level) {
+ case L5_SQ:
+ addr = PKO_L5_SQ_TOPOLOGY(node, queue);
+ data = oct_csr_read(addr);
+ parent_q = (data & GENMASK_ULL(25, 16)) >> 16;
+ break;
+
+ case L4_SQ:
+ addr = PKO_L4_SQ_TOPOLOGY(node, queue);
+ data = oct_csr_read(addr);
+ parent_q = (data & GENMASK_ULL(24, 16)) >> 16;
+ break;
+
+ case L3_SQ:
+ addr = PKO_L3_SQ_TOPOLOGY(node, queue);
+ data = oct_csr_read(addr);
+ parent_q = (data & GENMASK_ULL(24, 16)) >> 16;
+ break;
+
+ case L2_SQ:
+ addr = PKO_L2_SQ_TOPOLOGY(node, queue);
+ data = oct_csr_read(addr);
+ parent_q = (data & GENMASK_ULL(20, 16)) >> 16;
+ break;
+
+ case PQ:
+ break;
+
+ default:
+ pr_err("octeon3-pko: Invalid level=%d\n",
+ level);
+ return -1;
+ }
+
+ free_queues(node, level, 1, &queue);
+ queue = parent_q;
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(octeon3_pko_interface_uninit);
diff --git a/drivers/net/ethernet/cavium/octeon/octeon3-sso.c b/drivers/net/ethernet/cavium/octeon/octeon3-sso.c
new file mode 100644
index 0000000..9335093
--- /dev/null
+++ b/drivers/net/ethernet/cavium/octeon/octeon3-sso.c
@@ -0,0 +1,301 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2017 Cavium, Inc.
+ *
+ * Configuration of Schedule/Synchronize/Order (SSO) block.
+ */
+#include <linux/module.h>
+
+#include <asm/octeon/octeon.h>
+
+#include "octeon3.h"
+
+/* Registers are accessed via xkphys */
+#define SSO_BASE 0x1670000000000ull
+#define SSO_ADDR(node) (SET_XKPHYS + NODE_OFFSET(node) + \
+ SSO_BASE)
+
+#define SSO_AW_STATUS(n) (SSO_ADDR(n) + 0x000010e0)
+#define SSO_AW_CFG(n) (SSO_ADDR(n) + 0x000010f0)
+#define SSO_ERR0(n) (SSO_ADDR(n) + 0x00001240)
+#define SSO_TAQ_ADD(n) (SSO_ADDR(n) + 0x000020e0)
+#define SSO_XAQ_AURA(n) (SSO_ADDR(n) + 0x00002100)
+
+#define AQ_OFFSET(g) ((g) << 3)
+#define AQ_ADDR(n, g) (SSO_ADDR(n) + AQ_OFFSET(g))
+#define SSO_XAQ_HEAD_PTR(n, g) (AQ_ADDR(n, g) + 0x00080000)
+#define SSO_XAQ_TAIL_PTR(n, g) (AQ_ADDR(n, g) + 0x00090000)
+#define SSO_XAQ_HEAD_NEXT(n, g) (AQ_ADDR(n, g) + 0x000a0000)
+#define SSO_XAQ_TAIL_NEXT(n, g) (AQ_ADDR(n, g) + 0x000b0000)
+
+#define GRP_OFFSET(grp) ((grp) << 16)
+#define GRP_ADDR(n, g) (SSO_ADDR(n) + GRP_OFFSET(g))
+#define SSO_GRP_TAQ_THR(n, g) (GRP_ADDR(n, g) + 0x20000100)
+#define SSO_GRP_PRI(n, g) (GRP_ADDR(n, g) + 0x20000200)
+#define SSO_GRP_INT(n, g) (GRP_ADDR(n, g) + 0x20000400)
+#define SSO_GRP_INT_THR(n, g) (GRP_ADDR(n, g) + 0x20000500)
+#define SSO_GRP_AQ_CNT(n, g) (GRP_ADDR(n, g) + 0x20000700)
+
+static int get_num_sso_grps(void)
+{
+ if (OCTEON_IS_MODEL(OCTEON_CN78XX))
+ return 256;
+ if (OCTEON_IS_MODEL(OCTEON_CNF75XX) || OCTEON_IS_MODEL(OCTEON_CN73XX))
+ return 64;
+ return 0;
+}
+
+void octeon3_sso_irq_set(int node, int grp, bool en)
+{
+ if (en)
+ oct_csr_write(1, SSO_GRP_INT_THR(node, grp));
+ else
+ oct_csr_write(0, SSO_GRP_INT_THR(node, grp));
+
+ oct_csr_write(BIT(1), SSO_GRP_INT(node, grp));
+}
+EXPORT_SYMBOL(octeon3_sso_irq_set);
+
+/**
+ * octeon3_sso_alloc_grp_range() - Allocate a range of sso groups.
+ * @node: Node where sso resides.
+ * @req_grp: Group number to start allocating sequentially from. -1 for don't
+ * care.
+ * @req_cnt: Number of groups to allocate.
+ * @use_last_avail: Set to request the last available groups.
+ * @grp: Updated with allocated groups.
+ *
+ * Return: 0 if successful.
+ * < 0 for error codes.
+ */
+int octeon3_sso_alloc_grp_range(int node, int req_grp, int req_cnt,
+ bool use_last_avail, int *grp)
+{
+ struct global_resource_tag tag;
+ char buf[16];
+
+ /* Allocate the request group range */
+ strncpy((char *)&tag.lo, "cvm_sso_", 8);
+ snprintf(buf, 16, "0%d......", node);
+ memcpy(&tag.hi, buf, 8);
+
+ res_mgr_create_resource(tag, get_num_sso_grps());
+ return res_mgr_alloc_range(tag, req_grp, req_cnt, false, grp);
+}
+EXPORT_SYMBOL(octeon3_sso_alloc_grp_range);
+
+/**
+ * octeon3_sso_alloc_grp() - Allocate a sso group.
+ * @node: Node where sso resides.
+ * @req_grp: Group number to allocate, -1 for don't care.
+ *
+ * Return: allocated group.
+ * < 0 for error codes.
+ */
+int octeon3_sso_alloc_grp(int node, int req_grp)
+{
+ int grp;
+ int rc;
+
+ rc = octeon3_sso_alloc_grp_range(node, req_grp, 1, false, &grp);
+ if (!rc)
+ rc = grp;
+
+ return rc;
+}
+EXPORT_SYMBOL(octeon3_sso_alloc_grp);
+
+/**
+ * octeon3_sso_free_grp_range() - Free a range of sso groups.
+ * @node: Node where sso resides.
+ * @grp: Array of groups to free.
+ * @req_cnt: Number of groups to free.
+ */
+void octeon3_sso_free_grp_range(int node, int *grp, int req_cnt)
+{
+ struct global_resource_tag tag;
+ char buf[16];
+
+ /* Allocate the request group range */
+ strncpy((char *)&tag.lo, "cvm_sso_", 8);
+ snprintf(buf, 16, "0%d......", node);
+ memcpy(&tag.hi, buf, 8);
+
+ res_mgr_free_range(tag, grp, req_cnt);
+}
+EXPORT_SYMBOL(octeon3_sso_free_grp_range);
+
+/**
+ * octeon3_sso_free_grp() - Free a sso group.
+ * @node: Node where sso resides.
+ * @grp: Group to free.
+ */
+void octeon3_sso_free_grp(int node, int grp)
+{
+ octeon3_sso_free_grp_range(node, &grp, 1);
+}
+EXPORT_SYMBOL(octeon3_sso_free_grp);
+
+/**
+ * octeon3_sso_pass1_limit() - Near full TAQ can cause hang. When the TAQ
+ * (Transitory Admission Queue) is near-full, it is
+ * possible for SSO to hang.
+ * Workaround: Ensure that the sum of
+ * SSO_GRP(0..255)_TAQ_THR[MAX_THR] of all used
+ * groups is <= 1264. This may reduce single-group
+ * performance when many groups are used.
+ *
+ * @node: Node to update.
+ * @grp: SSO group to update.
+ */
+void octeon3_sso_pass1_limit(int node, int grp)
+{
+ u64 rsvd_thr;
+ u64 max_thr;
+ u64 taq_add;
+ u64 taq_thr;
+
+ /* Ideally, we would like to divide the maximum number of TAQ buffers
+ * (1264) among the sso groups in use. However, since we don't know how
+ * many sso groups are used by code outside this driver we take the
+ * worst case approach and assume all 256 sso groups must be supported.
+ */
+ max_thr = 1264 / get_num_sso_grps();
+ if (max_thr < 4)
+ max_thr = 4;
+ rsvd_thr = max_thr - 1;
+
+ /* Changes to SSO_GRP_TAQ_THR[rsvd_thr] must also update
+ * SSO_TAQ_ADD[RSVD_FREE].
+ */
+ taq_thr = oct_csr_read(SSO_GRP_TAQ_THR(node, grp));
+ taq_add = (rsvd_thr - (taq_thr & GENMASK_ULL(10, 0))) << 16;
+
+ taq_thr &= ~(GENMASK_ULL(42, 32) | GENMASK_ULL(10, 0));
+ taq_thr |= max_thr << 32;
+ taq_thr |= rsvd_thr;
+
+ oct_csr_write(taq_thr, SSO_GRP_TAQ_THR(node, grp));
+ oct_csr_write(taq_add, SSO_TAQ_ADD(node));
+}
+EXPORT_SYMBOL(octeon3_sso_pass1_limit);
+
+/**
+ * octeon3_sso_shutdown() - Shutdown the sso. It undoes what octeon3_sso_init()
+ * did.
+ * @node: Node where sso to disable is.
+ * @aura: Aura used for the sso buffers.
+ */
+void octeon3_sso_shutdown(int node, int aura)
+{
+ int max_grps;
+ int timeout;
+ u64 data;
+ int i;
+
+ /* Disable sso */
+ data = oct_csr_read(SSO_AW_CFG(node));
+ data |= BIT(6) | BIT(4);
+ data &= ~BIT(0);
+ oct_csr_write(data, SSO_AW_CFG(node));
+
+ /* Extract the fpa buffers */
+ max_grps = get_num_sso_grps();
+ for (i = 0; i < max_grps; i++) {
+ void *ptr;
+ u64 head;
+ u64 tail;
+
+ head = oct_csr_read(SSO_XAQ_HEAD_PTR(node, i));
+ tail = oct_csr_read(SSO_XAQ_TAIL_PTR(node, i));
+ data = oct_csr_read(SSO_GRP_AQ_CNT(node, i));
+
+ /* Verify pointers */
+ head &= GENMASK_ULL(41, 7);
+ tail &= GENMASK_ULL(41, 7);
+ if (head != tail) {
+ pr_err("octeon3_sso: bad ptr\n");
+ continue;
+ }
+
+ /* This sso group should have no pending entries */
+ if (data & GENMASK_ULL(32, 0))
+ pr_err("octeon3_sso: not empty\n");
+
+ ptr = phys_to_virt(head);
+ octeon_fpa3_free(node, aura, ptr);
+
+ /* Clear pointers */
+ oct_csr_write(0, SSO_XAQ_HEAD_PTR(node, i));
+ oct_csr_write(0, SSO_XAQ_HEAD_NEXT(node, i));
+ oct_csr_write(0, SSO_XAQ_TAIL_PTR(node, i));
+ oct_csr_write(0, SSO_XAQ_TAIL_NEXT(node, i));
+ }
+
+ /* Make sure all buffers drained */
+ timeout = 10000;
+ do {
+ data = oct_csr_read(SSO_AW_STATUS(node));
+ if ((data & GENMASK_ULL(5, 0)) == 0)
+ break;
+ timeout--;
+ udelay(1);
+ } while (timeout);
+ if (!timeout)
+ pr_err("octeon3_sso: timeout\n");
+}
+EXPORT_SYMBOL(octeon3_sso_shutdown);
+
+/**
+ * octeon3_sso_init() - Initialize the sso.
+ * @node: Node where sso resides.
+ * @aura: Aura used for the sso buffers.
+ */
+int octeon3_sso_init(int node, int aura)
+{
+ int max_grps;
+ int rc = 0;
+ u64 data;
+ int i;
+
+ data = BIT(3) | BIT(2) | BIT(1);
+ oct_csr_write(data, SSO_AW_CFG(node));
+
+ data = (node << 10) | aura;
+ oct_csr_write(data, SSO_XAQ_AURA(node));
+
+ max_grps = get_num_sso_grps();
+ for (i = 0; i < max_grps; i++) {
+ void *mem;
+ u64 phys;
+
+ mem = octeon_fpa3_alloc(node, aura);
+ if (!mem) {
+ rc = -ENOMEM;
+ goto err;
+ }
+
+ phys = virt_to_phys(mem);
+ oct_csr_write(phys, SSO_XAQ_HEAD_PTR(node, i));
+ oct_csr_write(phys, SSO_XAQ_HEAD_NEXT(node, i));
+ oct_csr_write(phys, SSO_XAQ_TAIL_PTR(node, i));
+ oct_csr_write(phys, SSO_XAQ_TAIL_NEXT(node, i));
+
+ /* SSO-18678 */
+ data = 0x3f << 16;
+ oct_csr_write(data, SSO_GRP_PRI(node, i));
+ }
+
+ data = BIT(0);
+ oct_csr_write(data, SSO_ERR0(node));
+
+ data = BIT(3) | BIT(2) | BIT(1) | BIT(0);
+ oct_csr_write(data, SSO_AW_CFG(node));
+
+ err:
+ return rc;
+}
+EXPORT_SYMBOL(octeon3_sso_init);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Cavium, Inc. <support@cavium.com>");
+MODULE_DESCRIPTION("Cavium, Inc. SSO management.");
diff --git a/drivers/net/ethernet/cavium/octeon/octeon3.h b/drivers/net/ethernet/cavium/octeon/octeon3.h
new file mode 100644
index 0000000..9823a97
--- /dev/null
+++ b/drivers/net/ethernet/cavium/octeon/octeon3.h
@@ -0,0 +1,430 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2017 Cavium, Inc. */
+#ifndef _OCTEON3_H_
+#define _OCTEON3_H_
+
+#include <linux/platform_device.h>
+#include <linux/netdevice.h>
+
+#define MAX_NODES 2
+#define NODE_MASK (MAX_NODES - 1)
+#define MAX_BGX_PER_NODE 6
+#define MAX_LMAC_PER_BGX 4
+
+#define IOBDMA_ORDERED_IO_ADDR 0xffffffffffffa200ull
+#define LMTDMA_ORDERED_IO_ADDR 0xffffffffffffa400ull
+
+#define SCRATCH_BASE 0xffffffffffff8000ull
+#define PKO_LMTLINE 2ull
+#define LMTDMA_SCR_OFFSET (PKO_LMTLINE * CVMX_CACHE_LINE_SIZE)
+
+/* Pko sub-command three bit codes (SUBDC3) */
+#define PKO_SENDSUBDC_GATHER 0x1
+
+/* Pko sub-command four bit codes (SUBDC4) */
+#define PKO_SENDSUBDC_TSO 0x8
+#define PKO_SENDSUBDC_FREE 0x9
+#define PKO_SENDSUBDC_WORK 0xa
+#define PKO_SENDSUBDC_MEM 0xc
+#define PKO_SENDSUBDC_EXT 0xd
+
+#define BGX_RX_FIFO_SIZE (64 * 1024)
+#define BGX_TX_FIFO_SIZE (32 * 1024)
+
+/* Registers are accessed via xkphys */
+#define SET_XKPHYS BIT_ULL(63)
+#define NODE_OFFSET(node) ((node) * 0x1000000000ull)
+
+/* Bgx register definitions */
+#define BGX_BASE 0x11800e0000000ull
+#define BGX_OFFSET(bgx) (BGX_BASE + ((bgx) << 24))
+#define INDEX_OFFSET(index) ((index) << 20)
+#define INDEX_ADDR(n, b, i) (SET_XKPHYS + NODE_OFFSET(n) + \
+ BGX_OFFSET(b) + INDEX_OFFSET(i))
+#define CAM_OFFSET(mac) ((mac) << 3)
+#define CAM_ADDR(n, b, m) (INDEX_ADDR(n, b, 0) + CAM_OFFSET(m))
+
+#define BGX_CMR_CONFIG(n, b, i) (INDEX_ADDR(n, b, i) + 0x00000)
+#define BGX_CMR_GLOBAL_CONFIG(n, b) (INDEX_ADDR(n, b, 0) + 0x00008)
+#define BGX_CMR_RX_ID_MAP(n, b, i) (INDEX_ADDR(n, b, i) + 0x00028)
+#define BGX_CMR_RX_BP_ON(n, b, i) (INDEX_ADDR(n, b, i) + 0x00088)
+#define BGX_CMR_RX_ADR_CTL(n, b, i) (INDEX_ADDR(n, b, i) + 0x000a0)
+#define BGX_CMR_RX_FIFO_LEN(n, b, i) (INDEX_ADDR(n, b, i) + 0x000c0)
+#define BGX_CMR_RX_ADRX_CAM(n, b, m) (CAM_ADDR(n, b, m) + 0x00100)
+#define BGX_CMR_CHAN_MSK_AND(n, b) (INDEX_ADDR(n, b, 0) + 0x00200)
+#define BGX_CMR_CHAN_MSK_OR(n, b) (INDEX_ADDR(n, b, 0) + 0x00208)
+#define BGX_CMR_TX_FIFO_LEN(n, b, i) (INDEX_ADDR(n, b, i) + 0x00418)
+#define BGX_CMR_TX_LMACS(n, b) (INDEX_ADDR(n, b, 0) + 0x01000)
+
+#define BGX_SPU_CONTROL1(n, b, i) (INDEX_ADDR(n, b, i) + 0x10000)
+#define BGX_SPU_STATUS1(n, b, i) (INDEX_ADDR(n, b, i) + 0x10008)
+#define BGX_SPU_STATUS2(n, b, i) (INDEX_ADDR(n, b, i) + 0x10020)
+#define BGX_SPU_BX_STATUS(n, b, i) (INDEX_ADDR(n, b, i) + 0x10028)
+#define BGX_SPU_BR_STATUS1(n, b, i) (INDEX_ADDR(n, b, i) + 0x10030)
+#define BGX_SPU_BR_STATUS2(n, b, i) (INDEX_ADDR(n, b, i) + 0x10038)
+#define BGX_SPU_BR_BIP_ERR_CNT(n, b, i) (INDEX_ADDR(n, b, i) + 0x10058)
+#define BGX_SPU_BR_PMD_CONTROL(n, b, i) (INDEX_ADDR(n, b, i) + 0x10068)
+#define BGX_SPU_BR_PMD_LP_CUP(n, b, i) (INDEX_ADDR(n, b, i) + 0x10078)
+#define BGX_SPU_BR_PMD_LD_CUP(n, b, i) (INDEX_ADDR(n, b, i) + 0x10088)
+#define BGX_SPU_BR_PMD_LD_REP(n, b, i) (INDEX_ADDR(n, b, i) + 0x10090)
+#define BGX_SPU_FEC_CONTROL(n, b, i) (INDEX_ADDR(n, b, i) + 0x100a0)
+#define BGX_SPU_AN_CONTROL(n, b, i) (INDEX_ADDR(n, b, i) + 0x100c8)
+#define BGX_SPU_AN_STATUS(n, b, i) (INDEX_ADDR(n, b, i) + 0x100d0)
+#define BGX_SPU_AN_ADV(n, b, i) (INDEX_ADDR(n, b, i) + 0x100d8)
+#define BGX_SPU_MISC_CONTROL(n, b, i) (INDEX_ADDR(n, b, i) + 0x10218)
+#define BGX_SPU_INT(n, b, i) (INDEX_ADDR(n, b, i) + 0x10220)
+#define BGX_SPU_DBG_CONTROL(n, b) (INDEX_ADDR(n, b, 0) + 0x10300)
+
+#define BGX_SMU_RX_INT(n, b, i) (INDEX_ADDR(n, b, i) + 0x20000)
+#define BGX_SMU_RX_FRM_CTL(n, b, i) (INDEX_ADDR(n, b, i) + 0x20008)
+#define BGX_SMU_RX_JABBER(n, b, i) (INDEX_ADDR(n, b, i) + 0x20018)
+#define BGX_SMU_RX_CTL(n, b, i) (INDEX_ADDR(n, b, i) + 0x20030)
+#define BGX_SMU_TX_APPEND(n, b, i) (INDEX_ADDR(n, b, i) + 0x20100)
+#define BGX_SMU_TX_MIN_PKT(n, b, i) (INDEX_ADDR(n, b, i) + 0x20118)
+#define BGX_SMU_TX_INT(n, b, i) (INDEX_ADDR(n, b, i) + 0x20140)
+#define BGX_SMU_TX_CTL(n, b, i) (INDEX_ADDR(n, b, i) + 0x20160)
+#define BGX_SMU_TX_THRESH(n, b, i) (INDEX_ADDR(n, b, i) + 0x20168)
+#define BGX_SMU_CTRL(n, b, i) (INDEX_ADDR(n, b, i) + 0x20200)
+
+#define BGX_GMP_PCS_MR_CONTROL(n, b, i) (INDEX_ADDR(n, b, i) + 0x30000)
+#define BGX_GMP_PCS_MR_STATUS(n, b, i) (INDEX_ADDR(n, b, i) + 0x30008)
+#define BGX_GMP_PCS_AN_ADV(n, b, i) (INDEX_ADDR(n, b, i) + 0x30010)
+#define BGX_GMP_PCS_LINK_TIMER(n, b, i) (INDEX_ADDR(n, b, i) + 0x30040)
+#define BGX_GMP_PCS_SGM_AN_ADV(n, b, i) (INDEX_ADDR(n, b, i) + 0x30068)
+#define BGX_GMP_PCS_MISC_CTL(n, b, i) (INDEX_ADDR(n, b, i) + 0x30078)
+#define BGX_GMP_GMI_PRT_CFG(n, b, i) (INDEX_ADDR(n, b, i) + 0x38010)
+#define BGX_GMP_GMI_RX_FRM_CTL(n, b, i) (INDEX_ADDR(n, b, i) + 0x38018)
+#define BGX_GMP_GMI_RX_JABBER(n, b, i) (INDEX_ADDR(n, b, i) + 0x38038)
+#define BGX_GMP_GMI_TX_THRESH(n, b, i) (INDEX_ADDR(n, b, i) + 0x38210)
+#define BGX_GMP_GMI_TX_APPEND(n, b, i) (INDEX_ADDR(n, b, i) + 0x38218)
+#define BGX_GMP_GMI_TX_SLOT(n, b, i) (INDEX_ADDR(n, b, i) + 0x38220)
+#define BGX_GMP_GMI_TX_BURST(n, b, i) (INDEX_ADDR(n, b, i) + 0x38228)
+#define BGX_GMP_GMI_TX_MIN_PKT(n, b, i) (INDEX_ADDR(n, b, i) + 0x38240)
+#define BGX_GMP_GMI_TX_SGMII_CTL(n, b, i) (INDEX_ADDR(n, b, i) + 0x38300)
+
+/* XCV register definitions */
+#define XCV_BASE 0x11800db000000ull
+#define SET_XCV_BASE(node) (SET_XKPHYS + NODE_OFFSET(node) + \
+ XCV_BASE)
+#define XCV_RESET(node) (SET_XCV_BASE(node) + 0x0000)
+#define XCV_DLL_CTL(node) (SET_XCV_BASE(node) + 0x0010)
+#define XCV_COMP_CTL(node) (SET_XCV_BASE(node) + 0x0020)
+#define XCV_CTL(node) (SET_XCV_BASE(node) + 0x0030)
+#define XCV_INT(node) (SET_XCV_BASE(node) + 0x0040)
+#define XCV_INBND_STATUS(node) (SET_XCV_BASE(node) + 0x0080)
+#define XCV_BATCH_CRD_RET(node) (SET_XCV_BASE(node) + 0x0100)
+
+/* Gser register definitions */
+#define GSER_BASE 0x1180090000000ull
+#define GSER_OFFSET(gser) (GSER_BASE + ((gser) << 24))
+#define GSER_LANE_OFFSET(lane) ((lane) << 20)
+#define GSER_LANE_ADDR(n, g, l) (SET_XKPHYS + NODE_OFFSET(n) + \
+ GSER_OFFSET(g) + GSER_LANE_OFFSET(l))
+#define GSER_PHY_CTL(n, g) (GSER_LANE_ADDR(n, g, 0) + 0x000000)
+#define GSER_CFG(n, g) (GSER_LANE_ADDR(n, g, 0) + 0x000080)
+#define GSER_LANE_MODE(n, g) (GSER_LANE_ADDR(n, g, 0) + 0x000118)
+#define GSER_RX_EIE_DETSTS(n, g) (GSER_LANE_ADDR(n, g, 0) + 0x000150)
+#define GSER_LANE_LBERT_CFG(n, g, l) (GSER_LANE_ADDR(n, g, l) + 0x4c0020)
+#define GSER_LANE_PCS_CTLIFC_0(n, g, l) (GSER_LANE_ADDR(n, g, l) + 0x4c0060)
+#define GSER_LANE_PCS_CTLIFC_2(n, g, l) (GSER_LANE_ADDR(n, g, l) + 0x4c0070)
+
+/* Odd gser registers */
+#define GSER_LANE_OFFSET_1(lane) ((lane) << 7)
+#define GSER_LANE_ADDR_1(n, g, l) (SET_XKPHYS + NODE_OFFSET(n) + \
+ GSER_OFFSET(g) + GSER_LANE_OFFSET_1(l))
+
+#define GSER_BR_RX_CTL(n, g, l) (GSER_LANE_ADDR_1(n, g, l) + 0x000400)
+#define GSER_BR_RX_EER(n, g, l) (GSER_LANE_ADDR_1(n, g, l) + 0x000418)
+
+#define GSER_LANE_OFFSET_2(mode) ((mode) << 5)
+#define GSER_LANE_ADDR_2(n, g, m) (SET_XKPHYS + NODE_OFFSET(n) + \
+ GSER_OFFSET(g) + GSER_LANE_OFFSET_2(m))
+
+#define GSER_LANE_P_MODE_1(n, g, m) (GSER_LANE_ADDR_2(n, g, m) + 0x4e0048)
+
+#define DPI_BASE 0x1df0000000000ull
+#define DPI_ADDR(n) (SET_XKPHYS + NODE_OFFSET(n) + DPI_BASE)
+#define DPI_CTL(n) (DPI_ADDR(n) + 0x00040)
+
+enum octeon3_mac_type {
+ BGX_MAC,
+ SRIO_MAC
+};
+
+enum octeon3_src_type {
+ QLM,
+ XCV
+};
+
+struct mac_platform_data {
+ enum octeon3_mac_type mac_type;
+ int numa_node;
+ int interface;
+ int port;
+ enum octeon3_src_type src_type;
+};
+
+struct bgx_port_netdev_priv {
+ struct bgx_port_priv *bgx_priv;
+};
+
+/* Remove this define to use these enums after the last cvmx code
+ * references are gone.
+ */
+/* PKO_MEMDSZ_E */
+enum pko_memdsz_e {
+ MEMDSZ_B64 = 0,
+ MEMDSZ_B32 = 1,
+ MEMDSZ_B16 = 2,
+ MEMDSZ_B8 = 3
+};
+
+/* PKO_MEMALG_E */
+enum pko_memalg_e {
+ MEMALG_SET = 0,
+ MEMALG_SETTSTMP = 1,
+ MEMALG_SETRSLT = 2,
+ MEMALG_ADD = 8,
+ MEMALG_SUB = 9,
+ MEMALG_ADDLEN = 0xA,
+ MEMALG_SUBLEN = 0xB,
+ MEMALG_ADDMBUF = 0xC,
+ MEMALG_SUBMBUF = 0xD
+};
+
+/* PKO_QUERY_RTN_S[DQSTATUS] */
+enum pko_query_dqstatus {
+ PKO_DQSTATUS_PASS = 0,
+ PKO_DQSTATUS_BADSTATE = 0x8,
+ PKO_DQSTATUS_NOFPABUF = 0x9,
+ PKO_DQSTATUS_NOPKOBUF = 0xA,
+ PKO_DQSTATUS_FAILRTNPTR = 0xB,
+ PKO_DQSTATUS_ALREADY = 0xC,
+ PKO_DQSTATUS_NOTCREATED = 0xD,
+ PKO_DQSTATUS_NOTEMPTY = 0xE,
+ PKO_DQSTATUS_SENDPKTDROP = 0xF
+};
+
+union wqe_word0 {
+ u64 u64;
+ struct {
+ __BITFIELD_FIELD(u64 rsvd_0:4,
+ __BITFIELD_FIELD(u64 aura:12,
+ __BITFIELD_FIELD(u64 rsvd_1:1,
+ __BITFIELD_FIELD(u64 apad:3,
+ __BITFIELD_FIELD(u64 channel:12,
+ __BITFIELD_FIELD(u64 bufs:8,
+ __BITFIELD_FIELD(u64 style:8,
+ __BITFIELD_FIELD(u64 rsvd_2:10,
+ __BITFIELD_FIELD(u64 pknd:6,
+ ;)))))))))
+ };
+};
+
+union wqe_word1 {
+ u64 u64;
+ struct {
+ __BITFIELD_FIELD(u64 len:16,
+ __BITFIELD_FIELD(u64 rsvd_0:2,
+ __BITFIELD_FIELD(u64 rsvd_1:2,
+ __BITFIELD_FIELD(u64 grp:10,
+ __BITFIELD_FIELD(u64 tag_type:2,
+ __BITFIELD_FIELD(u64 tag:32,
+ ;))))))
+ };
+};
+
+union wqe_word2 {
+ u64 u64;
+ struct {
+ __BITFIELD_FIELD(u64 software:1,
+ __BITFIELD_FIELD(u64 lg_hdr_type:5,
+ __BITFIELD_FIELD(u64 lf_hdr_type:5,
+ __BITFIELD_FIELD(u64 le_hdr_type:5,
+ __BITFIELD_FIELD(u64 ld_hdr_type:5,
+ __BITFIELD_FIELD(u64 lc_hdr_type:5,
+ __BITFIELD_FIELD(u64 lb_hdr_type:5,
+ __BITFIELD_FIELD(u64 is_la_ether:1,
+ __BITFIELD_FIELD(u64 rsvd_0:8,
+ __BITFIELD_FIELD(u64 vlan_valid:1,
+ __BITFIELD_FIELD(u64 vlan_stacked:1,
+ __BITFIELD_FIELD(u64 stat_inc:1,
+ __BITFIELD_FIELD(u64 pcam_flag4:1,
+ __BITFIELD_FIELD(u64 pcam_flag3:1,
+ __BITFIELD_FIELD(u64 pcam_flag2:1,
+ __BITFIELD_FIELD(u64 pcam_flag1:1,
+ __BITFIELD_FIELD(u64 is_frag:1,
+ __BITFIELD_FIELD(u64 is_l3_bcast:1,
+ __BITFIELD_FIELD(u64 is_l3_mcast:1,
+ __BITFIELD_FIELD(u64 is_l2_bcast:1,
+ __BITFIELD_FIELD(u64 is_l2_mcast:1,
+ __BITFIELD_FIELD(u64 is_raw:1,
+ __BITFIELD_FIELD(u64 err_level:3,
+ __BITFIELD_FIELD(u64 err_code:8,
+ ;))))))))))))))))))))))))
+ };
+};
+
+union buf_ptr {
+ u64 u64;
+ struct {
+ __BITFIELD_FIELD(u64 size:16,
+ __BITFIELD_FIELD(u64 packet_outside_wqe:1,
+ __BITFIELD_FIELD(u64 rsvd0:5,
+ __BITFIELD_FIELD(u64 addr:42,
+ ;))))
+ };
+};
+
+union wqe_word4 {
+ u64 u64;
+ struct {
+ __BITFIELD_FIELD(u64 ptr_vlan:8,
+ __BITFIELD_FIELD(u64 ptr_layer_g:8,
+ __BITFIELD_FIELD(u64 ptr_layer_f:8,
+ __BITFIELD_FIELD(u64 ptr_layer_e:8,
+ __BITFIELD_FIELD(u64 ptr_layer_d:8,
+ __BITFIELD_FIELD(u64 ptr_layer_c:8,
+ __BITFIELD_FIELD(u64 ptr_layer_b:8,
+ __BITFIELD_FIELD(u64 ptr_layer_a:8,
+ ;))))))))
+ };
+};
+
+struct wqe {
+ union wqe_word0 word0;
+ union wqe_word1 word1;
+ union wqe_word2 word2;
+ union buf_ptr packet_ptr;
+ union wqe_word4 word4;
+ u64 wqe_data[11];
+};
+
+enum port_mode {
+ PORT_MODE_DISABLED,
+ PORT_MODE_SGMII,
+ PORT_MODE_RGMII,
+ PORT_MODE_XAUI,
+ PORT_MODE_RXAUI,
+ PORT_MODE_XLAUI,
+ PORT_MODE_XFI,
+ PORT_MODE_10G_KR,
+ PORT_MODE_40G_KR4
+};
+
+enum lane_mode {
+ R_25G_REFCLK100,
+ R_5G_REFCLK100,
+ R_8G_REFCLK100,
+ R_125G_REFCLK15625_KX,
+ R_3125G_REFCLK15625_XAUI,
+ R_103125G_REFCLK15625_KR,
+ R_125G_REFCLK15625_SGMII,
+ R_5G_REFCLK15625_QSGMII,
+ R_625G_REFCLK15625_RXAUI,
+ R_25G_REFCLK125,
+ R_5G_REFCLK125,
+ R_8G_REFCLK125
+};
+
+struct port_status {
+ int link;
+ int duplex;
+ int speed;
+};
+
+static inline u64 oct_csr_read(u64 addr)
+{
+ return __raw_readq((void __iomem *)addr);
+}
+
+static inline void oct_csr_write(u64 data, u64 addr)
+{
+ __raw_writeq(data, (void __iomem *)addr);
+}
+
+static inline int bgx_addr_to_interface(u64 addr)
+{
+ return (addr >> 24) & 0xf;
+}
+
+static inline int bgx_node_to_numa_node(struct device_node *np)
+{
+ int ret = of_node_to_nid(np);
+
+ return ret == NUMA_NO_NODE ? 0 : ret;
+}
+
+extern int ilk0_lanes;
+extern int ilk1_lanes;
+
+void bgx_nexus_load(void);
+
+int bgx_port_allocate_pknd(int node);
+int bgx_port_get_pknd(int node, int bgx, int index);
+enum port_mode bgx_port_get_mode(int node, int bgx, int index);
+int bgx_port_get_qlm(int node, int bgx, int index);
+void bgx_port_set_netdev(struct device *dev, struct net_device *netdev);
+int bgx_port_enable(struct net_device *netdev);
+int bgx_port_disable(struct net_device *netdev);
+const u8 *bgx_port_get_mac(struct net_device *netdev);
+void bgx_port_set_rx_filtering(struct net_device *netdev);
+int bgx_port_change_mtu(struct net_device *netdev, int new_mtu);
+int bgx_port_ethtool_get_link_ksettings(struct net_device *netdev,
+ struct ethtool_link_ksettings *cmd);
+int bgx_port_ethtool_get_settings(struct net_device *netdev,
+ struct ethtool_cmd *cmd);
+int bgx_port_ethtool_set_settings(struct net_device *netdev,
+ struct ethtool_cmd *cmd);
+int bgx_port_ethtool_nway_reset(struct net_device *netdev);
+int bgx_port_do_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
+
+void bgx_port_mix_assert_reset(struct net_device *netdev, int mix, bool v);
+
+int octeon3_pki_vlan_init(int node);
+int octeon3_pki_cluster_init(int node, struct platform_device *pdev);
+int octeon3_pki_ltype_init(int node);
+int octeon3_pki_enable(int node);
+int octeon3_pki_port_init(int node, int aura, int grp, int skip, int mb_size,
+ int pknd, int num_rx_cxt);
+int octeon3_pki_get_stats(int node, int pknd, u64 *packets, u64 *octets,
+ u64 *dropped);
+int octeon3_pki_set_ptp_skip(int node, int pknd, int skip);
+int octeon3_pki_port_shutdown(int node, int pknd);
+void octeon3_pki_shutdown(int node);
+
+void octeon3_sso_pass1_limit(int node, int grp);
+int octeon3_sso_init(int node, int aura);
+void octeon3_sso_shutdown(int node, int aura);
+int octeon3_sso_alloc_grp(int node, int grp);
+int octeon3_sso_alloc_grp_range(int node, int req_grp, int req_cnt,
+ bool use_last_avail, int *grp);
+void octeon3_sso_free_grp(int node, int grp);
+void octeon3_sso_free_grp_range(int node, int *grp, int req_cnt);
+void octeon3_sso_irq_set(int node, int grp, bool en);
+
+int octeon3_pko_interface_init(int node, int interface, int index,
+ enum octeon3_mac_type mac_type, int ipd_port);
+int octeon3_pko_activate_dq(int node, int dq, int cnt);
+int octeon3_pko_get_fifo_size(int node, int interface, int index,
+ enum octeon3_mac_type mac_type);
+int octeon3_pko_set_mac_options(int node, int interface, int index,
+ enum octeon3_mac_type mac_type, bool fcs_en,
+ bool pad_en, int fcs_sop_off);
+int octeon3_pko_init_global(int node, int aura);
+int octeon3_pko_interface_uninit(int node, const int *dq, int num_dq);
+int octeon3_pko_exit_global(int node);
+
+int octeon_fpa3_init(int node);
+int octeon_fpa3_pool_init(int node, int pool_num, int *pool, void **pool_stack,
+ int num_ptrs);
+int octeon_fpa3_aura_init(int node, int pool, int aura_num, int *aura,
+ int num_bufs, unsigned int limit);
+int octeon_fpa3_mem_fill(int node, struct kmem_cache *cache, int aura,
+ int num_bufs);
+void octeon_fpa3_free(int node, int aura, const void *buf);
+void *octeon_fpa3_alloc(int node, int aura);
+void octeon_fpa3_release_pool(int node, int pool);
+void octeon_fpa3_release_aura(int node, int aura);
+
+#endif /* _OCTEON3_H_ */
--
2.1.4
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