diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/staging/octeon | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/staging/octeon')
-rw-r--r-- | drivers/staging/octeon/Kconfig | 15 | ||||
-rw-r--r-- | drivers/staging/octeon/Makefile | 19 | ||||
-rw-r--r-- | drivers/staging/octeon/TODO | 9 | ||||
-rw-r--r-- | drivers/staging/octeon/ethernet-defines.h | 40 | ||||
-rw-r--r-- | drivers/staging/octeon/ethernet-mdio.c | 171 | ||||
-rw-r--r-- | drivers/staging/octeon/ethernet-mdio.h | 26 | ||||
-rw-r--r-- | drivers/staging/octeon/ethernet-mem.c | 154 | ||||
-rw-r--r-- | drivers/staging/octeon/ethernet-mem.h | 9 | ||||
-rw-r--r-- | drivers/staging/octeon/ethernet-rgmii.c | 158 | ||||
-rw-r--r-- | drivers/staging/octeon/ethernet-rx.c | 542 | ||||
-rw-r--r-- | drivers/staging/octeon/ethernet-rx.h | 31 | ||||
-rw-r--r-- | drivers/staging/octeon/ethernet-sgmii.c | 30 | ||||
-rw-r--r-- | drivers/staging/octeon/ethernet-spi.c | 226 | ||||
-rw-r--r-- | drivers/staging/octeon/ethernet-tx.c | 716 | ||||
-rw-r--r-- | drivers/staging/octeon/ethernet-tx.h | 14 | ||||
-rw-r--r-- | drivers/staging/octeon/ethernet-util.h | 47 | ||||
-rw-r--r-- | drivers/staging/octeon/ethernet.c | 993 | ||||
-rw-r--r-- | drivers/staging/octeon/octeon-ethernet.h | 107 | ||||
-rw-r--r-- | drivers/staging/octeon/octeon-stubs.h | 1435 |
19 files changed, 4742 insertions, 0 deletions
diff --git a/drivers/staging/octeon/Kconfig b/drivers/staging/octeon/Kconfig new file mode 100644 index 000000000..5319909eb --- /dev/null +++ b/drivers/staging/octeon/Kconfig @@ -0,0 +1,15 @@ +# SPDX-License-Identifier: GPL-2.0 +config OCTEON_ETHERNET + tristate "Cavium Networks Octeon Ethernet support" + depends on CAVIUM_OCTEON_SOC || COMPILE_TEST + depends on NETDEVICES + select PHYLIB + select MDIO_OCTEON + help + This driver supports the builtin ethernet ports on Cavium + Networks' products in the Octeon family. This driver supports the + CN3XXX and CN5XXX Octeon processors. + + To compile this driver as a module, choose M here. The module + will be called octeon-ethernet. + diff --git a/drivers/staging/octeon/Makefile b/drivers/staging/octeon/Makefile new file mode 100644 index 000000000..3887cf5f1 --- /dev/null +++ b/drivers/staging/octeon/Makefile @@ -0,0 +1,19 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright (C) 2005-2009 Cavium Networks +# + +# +# Makefile for Cavium OCTEON on-board ethernet driver +# + +obj-${CONFIG_OCTEON_ETHERNET} := octeon-ethernet.o + +octeon-ethernet-y := ethernet.o +octeon-ethernet-y += ethernet-mdio.o +octeon-ethernet-y += ethernet-mem.o +octeon-ethernet-y += ethernet-rgmii.o +octeon-ethernet-y += ethernet-rx.o +octeon-ethernet-y += ethernet-sgmii.o +octeon-ethernet-y += ethernet-spi.o +octeon-ethernet-y += ethernet-tx.o diff --git a/drivers/staging/octeon/TODO b/drivers/staging/octeon/TODO new file mode 100644 index 000000000..67a0a1f6b --- /dev/null +++ b/drivers/staging/octeon/TODO @@ -0,0 +1,9 @@ +This driver is functional and supports Ethernet on OCTEON+/OCTEON2/OCTEON3 +chips at least up to CN7030. + +TODO: + - general code review and clean up + - make driver self-contained instead of being split between staging and + arch/mips/cavium-octeon. + +Contact: Aaro Koskinen <aaro.koskinen@iki.fi> diff --git a/drivers/staging/octeon/ethernet-defines.h b/drivers/staging/octeon/ethernet-defines.h new file mode 100644 index 000000000..c060374a3 --- /dev/null +++ b/drivers/staging/octeon/ethernet-defines.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2007 Cavium Networks + */ + +/* + * A few defines are used to control the operation of this driver: + * USE_ASYNC_IOBDMA + * Use asynchronous IO access to hardware. This uses Octeon's asynchronous + * IOBDMAs to issue IO accesses without stalling. Set this to zero + * to disable this. Note that IOBDMAs require CVMSEG. + * REUSE_SKBUFFS_WITHOUT_FREE + * Allows the TX path to free an skbuff into the FPA hardware pool. This + * can significantly improve performance for forwarding and bridging, but + * may be somewhat dangerous. Checks are made, but if any buffer is reused + * without the proper Linux cleanup, the networking stack may have very + * bizarre bugs. + */ +#ifndef __ETHERNET_DEFINES_H__ +#define __ETHERNET_DEFINES_H__ + +#ifdef CONFIG_NETFILTER +#define REUSE_SKBUFFS_WITHOUT_FREE 0 +#else +#define REUSE_SKBUFFS_WITHOUT_FREE 1 +#endif + +#define USE_ASYNC_IOBDMA (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0) + +/* Maximum number of SKBs to try to free per xmit packet. */ +#define MAX_OUT_QUEUE_DEPTH 1000 + +#define FAU_TOTAL_TX_TO_CLEAN (CVMX_FAU_REG_END - sizeof(u32)) +#define FAU_NUM_PACKET_BUFFERS_TO_FREE (FAU_TOTAL_TX_TO_CLEAN - sizeof(u32)) + +#define TOTAL_NUMBER_OF_PORTS (CVMX_PIP_NUM_INPUT_PORTS + 1) + +#endif /* __ETHERNET_DEFINES_H__ */ diff --git a/drivers/staging/octeon/ethernet-mdio.c b/drivers/staging/octeon/ethernet-mdio.c new file mode 100644 index 000000000..b3049108e --- /dev/null +++ b/drivers/staging/octeon/ethernet-mdio.c @@ -0,0 +1,171 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2007 Cavium Networks + */ + +#include <linux/kernel.h> +#include <linux/ethtool.h> +#include <linux/phy.h> +#include <linux/ratelimit.h> +#include <linux/of_mdio.h> +#include <generated/utsrelease.h> +#include <net/dst.h> + +#include "octeon-ethernet.h" +#include "ethernet-defines.h" +#include "ethernet-mdio.h" +#include "ethernet-util.h" + +static void cvm_oct_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + strscpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); + strscpy(info->version, UTS_RELEASE, sizeof(info->version)); + strscpy(info->bus_info, "Builtin", sizeof(info->bus_info)); +} + +static int cvm_oct_nway_reset(struct net_device *dev) +{ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + if (dev->phydev) + return phy_start_aneg(dev->phydev); + + return -EINVAL; +} + +const struct ethtool_ops cvm_oct_ethtool_ops = { + .get_drvinfo = cvm_oct_get_drvinfo, + .nway_reset = cvm_oct_nway_reset, + .get_link = ethtool_op_get_link, + .get_link_ksettings = phy_ethtool_get_link_ksettings, + .set_link_ksettings = phy_ethtool_set_link_ksettings, +}; + +/** + * cvm_oct_ioctl - IOCTL support for PHY control + * @dev: Device to change + * @rq: the request + * @cmd: the command + * + * Returns Zero on success + */ +int cvm_oct_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + if (!netif_running(dev)) + return -EINVAL; + + if (!dev->phydev) + return -EINVAL; + + return phy_mii_ioctl(dev->phydev, rq, cmd); +} + +void cvm_oct_note_carrier(struct octeon_ethernet *priv, + union cvmx_helper_link_info li) +{ + if (li.s.link_up) { + pr_notice_ratelimited("%s: %u Mbps %s duplex, port %d, queue %d\n", + netdev_name(priv->netdev), li.s.speed, + (li.s.full_duplex) ? "Full" : "Half", + priv->port, priv->queue); + } else { + pr_notice_ratelimited("%s: Link down\n", + netdev_name(priv->netdev)); + } +} + +void cvm_oct_adjust_link(struct net_device *dev) +{ + struct octeon_ethernet *priv = netdev_priv(dev); + union cvmx_helper_link_info link_info; + + link_info.u64 = 0; + link_info.s.link_up = dev->phydev->link ? 1 : 0; + link_info.s.full_duplex = dev->phydev->duplex ? 1 : 0; + link_info.s.speed = dev->phydev->speed; + priv->link_info = link_info.u64; + + /* + * The polling task need to know about link status changes. + */ + if (priv->poll) + priv->poll(dev); + + if (priv->last_link != dev->phydev->link) { + priv->last_link = dev->phydev->link; + cvmx_helper_link_set(priv->port, link_info); + cvm_oct_note_carrier(priv, link_info); + } +} + +int cvm_oct_common_stop(struct net_device *dev) +{ + struct octeon_ethernet *priv = netdev_priv(dev); + int interface = INTERFACE(priv->port); + union cvmx_helper_link_info link_info; + union cvmx_gmxx_prtx_cfg gmx_cfg; + int index = INDEX(priv->port); + + gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); + gmx_cfg.s.en = 0; + cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64); + + priv->poll = NULL; + + if (dev->phydev) + phy_disconnect(dev->phydev); + + if (priv->last_link) { + link_info.u64 = 0; + priv->last_link = 0; + + cvmx_helper_link_set(priv->port, link_info); + cvm_oct_note_carrier(priv, link_info); + } + return 0; +} + +/** + * cvm_oct_phy_setup_device - setup the PHY + * + * @dev: Device to setup + * + * Returns Zero on success, negative on failure + */ +int cvm_oct_phy_setup_device(struct net_device *dev) +{ + struct octeon_ethernet *priv = netdev_priv(dev); + struct device_node *phy_node; + struct phy_device *phydev = NULL; + + if (!priv->of_node) + goto no_phy; + + phy_node = of_parse_phandle(priv->of_node, "phy-handle", 0); + if (!phy_node && of_phy_is_fixed_link(priv->of_node)) + phy_node = of_node_get(priv->of_node); + if (!phy_node) + goto no_phy; + + phydev = of_phy_connect(dev, phy_node, cvm_oct_adjust_link, 0, + priv->phy_mode); + of_node_put(phy_node); + + if (!phydev) + return -EPROBE_DEFER; + + priv->last_link = 0; + phy_start(phydev); + + return 0; +no_phy: + /* If there is no phy, assume a direct MAC connection and that + * the link is up. + */ + netif_carrier_on(dev); + return 0; +} diff --git a/drivers/staging/octeon/ethernet-mdio.h b/drivers/staging/octeon/ethernet-mdio.h new file mode 100644 index 000000000..7f6716e3f --- /dev/null +++ b/drivers/staging/octeon/ethernet-mdio.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2007 Cavium Networks + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/ip.h> +#include <linux/string.h> +#include <linux/ethtool.h> +#include <linux/seq_file.h> +#include <linux/proc_fs.h> +#include <net/dst.h> +#ifdef CONFIG_XFRM +#include <linux/xfrm.h> +#include <net/xfrm.h> +#endif /* CONFIG_XFRM */ + +extern const struct ethtool_ops cvm_oct_ethtool_ops; + +int cvm_oct_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +int cvm_oct_phy_setup_device(struct net_device *dev); diff --git a/drivers/staging/octeon/ethernet-mem.c b/drivers/staging/octeon/ethernet-mem.c new file mode 100644 index 000000000..532594957 --- /dev/null +++ b/drivers/staging/octeon/ethernet-mem.c @@ -0,0 +1,154 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2010 Cavium Networks + */ + +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/slab.h> + +#include "octeon-ethernet.h" +#include "ethernet-mem.h" +#include "ethernet-defines.h" + +/** + * cvm_oct_fill_hw_skbuff - fill the supplied hardware pool with skbuffs + * @pool: Pool to allocate an skbuff for + * @size: Size of the buffer needed for the pool + * @elements: Number of buffers to allocate + * + * Returns the actual number of buffers allocated. + */ +static int cvm_oct_fill_hw_skbuff(int pool, int size, int elements) +{ + int freed = elements; + + while (freed) { + struct sk_buff *skb = dev_alloc_skb(size + 256); + + if (unlikely(!skb)) + break; + skb_reserve(skb, 256 - (((unsigned long)skb->data) & 0x7f)); + *(struct sk_buff **)(skb->data - sizeof(void *)) = skb; + cvmx_fpa_free(skb->data, pool, size / 128); + freed--; + } + return elements - freed; +} + +/** + * cvm_oct_free_hw_skbuff- free hardware pool skbuffs + * @pool: Pool to allocate an skbuff for + * @size: Size of the buffer needed for the pool + * @elements: Number of buffers to allocate + */ +static void cvm_oct_free_hw_skbuff(int pool, int size, int elements) +{ + char *memory; + + do { + memory = cvmx_fpa_alloc(pool); + if (memory) { + struct sk_buff *skb = + *(struct sk_buff **)(memory - sizeof(void *)); + elements--; + dev_kfree_skb(skb); + } + } while (memory); + + if (elements < 0) + pr_warn("Freeing of pool %u had too many skbuffs (%d)\n", + pool, elements); + else if (elements > 0) + pr_warn("Freeing of pool %u is missing %d skbuffs\n", + pool, elements); +} + +/** + * cvm_oct_fill_hw_memory - fill a hardware pool with memory. + * @pool: Pool to populate + * @size: Size of each buffer in the pool + * @elements: Number of buffers to allocate + * + * Returns the actual number of buffers allocated. + */ +static int cvm_oct_fill_hw_memory(int pool, int size, int elements) +{ + char *memory; + char *fpa; + int freed = elements; + + while (freed) { + /* + * FPA memory must be 128 byte aligned. Since we are + * aligning we need to save the original pointer so we + * can feed it to kfree when the memory is returned to + * the kernel. + * + * We allocate an extra 256 bytes to allow for + * alignment and space for the original pointer saved + * just before the block. + */ + memory = kmalloc(size + 256, GFP_ATOMIC); + if (unlikely(!memory)) { + pr_warn("Unable to allocate %u bytes for FPA pool %d\n", + elements * size, pool); + break; + } + fpa = (char *)(((unsigned long)memory + 256) & ~0x7fUL); + *((char **)fpa - 1) = memory; + cvmx_fpa_free(fpa, pool, 0); + freed--; + } + return elements - freed; +} + +/** + * cvm_oct_free_hw_memory - Free memory allocated by cvm_oct_fill_hw_memory + * @pool: FPA pool to free + * @size: Size of each buffer in the pool + * @elements: Number of buffers that should be in the pool + */ +static void cvm_oct_free_hw_memory(int pool, int size, int elements) +{ + char *memory; + char *fpa; + + do { + fpa = cvmx_fpa_alloc(pool); + if (fpa) { + elements--; + fpa = (char *)phys_to_virt(cvmx_ptr_to_phys(fpa)); + memory = *((char **)fpa - 1); + kfree(memory); + } + } while (fpa); + + if (elements < 0) + pr_warn("Freeing of pool %u had too many buffers (%d)\n", + pool, elements); + else if (elements > 0) + pr_warn("Warning: Freeing of pool %u is missing %d buffers\n", + pool, elements); +} + +int cvm_oct_mem_fill_fpa(int pool, int size, int elements) +{ + int freed; + + if (pool == CVMX_FPA_PACKET_POOL) + freed = cvm_oct_fill_hw_skbuff(pool, size, elements); + else + freed = cvm_oct_fill_hw_memory(pool, size, elements); + return freed; +} + +void cvm_oct_mem_empty_fpa(int pool, int size, int elements) +{ + if (pool == CVMX_FPA_PACKET_POOL) + cvm_oct_free_hw_skbuff(pool, size, elements); + else + cvm_oct_free_hw_memory(pool, size, elements); +} diff --git a/drivers/staging/octeon/ethernet-mem.h b/drivers/staging/octeon/ethernet-mem.h new file mode 100644 index 000000000..692dcdb71 --- /dev/null +++ b/drivers/staging/octeon/ethernet-mem.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2007 Cavium Networks + */ + +int cvm_oct_mem_fill_fpa(int pool, int size, int elements); +void cvm_oct_mem_empty_fpa(int pool, int size, int elements); diff --git a/drivers/staging/octeon/ethernet-rgmii.c b/drivers/staging/octeon/ethernet-rgmii.c new file mode 100644 index 000000000..0c4fac315 --- /dev/null +++ b/drivers/staging/octeon/ethernet-rgmii.c @@ -0,0 +1,158 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2007 Cavium Networks + */ + +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/interrupt.h> +#include <linux/phy.h> +#include <linux/ratelimit.h> +#include <net/dst.h> + +#include "octeon-ethernet.h" +#include "ethernet-defines.h" +#include "ethernet-util.h" +#include "ethernet-mdio.h" + +static DEFINE_SPINLOCK(global_register_lock); + +static void cvm_oct_set_hw_preamble(struct octeon_ethernet *priv, bool enable) +{ + union cvmx_gmxx_rxx_frm_ctl gmxx_rxx_frm_ctl; + union cvmx_ipd_sub_port_fcs ipd_sub_port_fcs; + union cvmx_gmxx_rxx_int_reg gmxx_rxx_int_reg; + int interface = INTERFACE(priv->port); + int index = INDEX(priv->port); + + /* Set preamble checking. */ + gmxx_rxx_frm_ctl.u64 = cvmx_read_csr(CVMX_GMXX_RXX_FRM_CTL(index, + interface)); + gmxx_rxx_frm_ctl.s.pre_chk = enable; + cvmx_write_csr(CVMX_GMXX_RXX_FRM_CTL(index, interface), + gmxx_rxx_frm_ctl.u64); + + /* Set FCS stripping. */ + ipd_sub_port_fcs.u64 = cvmx_read_csr(CVMX_IPD_SUB_PORT_FCS); + if (enable) + ipd_sub_port_fcs.s.port_bit |= 1ull << priv->port; + else + ipd_sub_port_fcs.s.port_bit &= + 0xffffffffull ^ (1ull << priv->port); + cvmx_write_csr(CVMX_IPD_SUB_PORT_FCS, ipd_sub_port_fcs.u64); + + /* Clear any error bits. */ + gmxx_rxx_int_reg.u64 = cvmx_read_csr(CVMX_GMXX_RXX_INT_REG(index, + interface)); + cvmx_write_csr(CVMX_GMXX_RXX_INT_REG(index, interface), + gmxx_rxx_int_reg.u64); +} + +static void cvm_oct_check_preamble_errors(struct net_device *dev) +{ + struct octeon_ethernet *priv = netdev_priv(dev); + union cvmx_helper_link_info link_info; + unsigned long flags; + + link_info.u64 = priv->link_info; + + /* + * Take the global register lock since we are going to + * touch registers that affect more than one port. + */ + spin_lock_irqsave(&global_register_lock, flags); + + if (link_info.s.speed == 10 && priv->last_speed == 10) { + /* + * Read the GMXX_RXX_INT_REG[PCTERR] bit and see if we are + * getting preamble errors. + */ + int interface = INTERFACE(priv->port); + int index = INDEX(priv->port); + union cvmx_gmxx_rxx_int_reg gmxx_rxx_int_reg; + + gmxx_rxx_int_reg.u64 = cvmx_read_csr(CVMX_GMXX_RXX_INT_REG + (index, interface)); + if (gmxx_rxx_int_reg.s.pcterr) { + /* + * We are getting preamble errors at 10Mbps. Most + * likely the PHY is giving us packets with misaligned + * preambles. In order to get these packets we need to + * disable preamble checking and do it in software. + */ + cvm_oct_set_hw_preamble(priv, false); + printk_ratelimited("%s: Using 10Mbps with software preamble removal\n", + dev->name); + } + } else { + /* + * Since the 10Mbps preamble workaround is allowed we need to + * enable preamble checking, FCS stripping, and clear error + * bits on every speed change. If errors occur during 10Mbps + * operation the above code will change this stuff + */ + if (priv->last_speed != link_info.s.speed) + cvm_oct_set_hw_preamble(priv, true); + priv->last_speed = link_info.s.speed; + } + spin_unlock_irqrestore(&global_register_lock, flags); +} + +static void cvm_oct_rgmii_poll(struct net_device *dev) +{ + struct octeon_ethernet *priv = netdev_priv(dev); + union cvmx_helper_link_info link_info; + bool status_change; + + link_info = cvmx_helper_link_get(priv->port); + if (priv->link_info != link_info.u64 && + cvmx_helper_link_set(priv->port, link_info)) + link_info.u64 = priv->link_info; + status_change = priv->link_info != link_info.u64; + priv->link_info = link_info.u64; + + cvm_oct_check_preamble_errors(dev); + + if (likely(!status_change)) + return; + + /* Tell core. */ + if (link_info.s.link_up) { + if (!netif_carrier_ok(dev)) + netif_carrier_on(dev); + } else if (netif_carrier_ok(dev)) { + netif_carrier_off(dev); + } + cvm_oct_note_carrier(priv, link_info); +} + +int cvm_oct_rgmii_open(struct net_device *dev) +{ + struct octeon_ethernet *priv = netdev_priv(dev); + int ret; + + ret = cvm_oct_common_open(dev, cvm_oct_rgmii_poll); + if (ret) + return ret; + + if (dev->phydev) { + /* + * In phydev mode, we need still periodic polling for the + * preamble error checking, and we also need to call this + * function on every link state change. + * + * Only true RGMII ports need to be polled. In GMII mode, port + * 0 is really a RGMII port. + */ + if ((priv->imode == CVMX_HELPER_INTERFACE_MODE_GMII && + priv->port == 0) || + (priv->imode == CVMX_HELPER_INTERFACE_MODE_RGMII)) { + priv->poll = cvm_oct_check_preamble_errors; + cvm_oct_check_preamble_errors(dev); + } + } + + return 0; +} diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c new file mode 100644 index 000000000..965330eec --- /dev/null +++ b/drivers/staging/octeon/ethernet-rx.c @@ -0,0 +1,542 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2010 Cavium Networks + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/cache.h> +#include <linux/cpumask.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/ip.h> +#include <linux/string.h> +#include <linux/prefetch.h> +#include <linux/ratelimit.h> +#include <linux/smp.h> +#include <linux/interrupt.h> +#include <net/dst.h> +#ifdef CONFIG_XFRM +#include <linux/xfrm.h> +#include <net/xfrm.h> +#endif /* CONFIG_XFRM */ + +#include "octeon-ethernet.h" +#include "ethernet-defines.h" +#include "ethernet-mem.h" +#include "ethernet-rx.h" +#include "ethernet-util.h" + +static atomic_t oct_rx_ready = ATOMIC_INIT(0); + +static struct oct_rx_group { + int irq; + int group; + struct napi_struct napi; +} oct_rx_group[16]; + +/** + * cvm_oct_do_interrupt - interrupt handler. + * @irq: Interrupt number. + * @napi_id: Cookie to identify the NAPI instance. + * + * The interrupt occurs whenever the POW has packets in our group. + * + */ +static irqreturn_t cvm_oct_do_interrupt(int irq, void *napi_id) +{ + /* Disable the IRQ and start napi_poll. */ + disable_irq_nosync(irq); + napi_schedule(napi_id); + + return IRQ_HANDLED; +} + +/** + * cvm_oct_check_rcv_error - process receive errors + * @work: Work queue entry pointing to the packet. + * + * Returns Non-zero if the packet can be dropped, zero otherwise. + */ +static inline int cvm_oct_check_rcv_error(struct cvmx_wqe *work) +{ + int port; + + if (octeon_has_feature(OCTEON_FEATURE_PKND)) + port = work->word0.pip.cn68xx.pknd; + else + port = work->word1.cn38xx.ipprt; + + if ((work->word2.snoip.err_code == 10) && (work->word1.len <= 64)) + /* + * Ignore length errors on min size packets. Some + * equipment incorrectly pads packets to 64+4FCS + * instead of 60+4FCS. Note these packets still get + * counted as frame errors. + */ + return 0; + + if (work->word2.snoip.err_code == 5 || + work->word2.snoip.err_code == 7) { + /* + * We received a packet with either an alignment error + * or a FCS error. This may be signalling that we are + * running 10Mbps with GMXX_RXX_FRM_CTL[PRE_CHK] + * off. If this is the case we need to parse the + * packet to determine if we can remove a non spec + * preamble and generate a correct packet. + */ + int interface = cvmx_helper_get_interface_num(port); + int index = cvmx_helper_get_interface_index_num(port); + union cvmx_gmxx_rxx_frm_ctl gmxx_rxx_frm_ctl; + + gmxx_rxx_frm_ctl.u64 = + cvmx_read_csr(CVMX_GMXX_RXX_FRM_CTL(index, interface)); + if (gmxx_rxx_frm_ctl.s.pre_chk == 0) { + u8 *ptr = + cvmx_phys_to_ptr(work->packet_ptr.s.addr); + int i = 0; + + while (i < work->word1.len - 1) { + if (*ptr != 0x55) + break; + ptr++; + i++; + } + + if (*ptr == 0xd5) { + /* Port received 0xd5 preamble */ + work->packet_ptr.s.addr += i + 1; + work->word1.len -= i + 5; + return 0; + } + + if ((*ptr & 0xf) == 0xd) { + /* Port received 0xd preamble */ + work->packet_ptr.s.addr += i; + work->word1.len -= i + 4; + for (i = 0; i < work->word1.len; i++) { + *ptr = + ((*ptr & 0xf0) >> 4) | + ((*(ptr + 1) & 0xf) << 4); + ptr++; + } + return 0; + } + + printk_ratelimited("Port %d unknown preamble, packet dropped\n", + port); + cvm_oct_free_work(work); + return 1; + } + } + + printk_ratelimited("Port %d receive error code %d, packet dropped\n", + port, work->word2.snoip.err_code); + cvm_oct_free_work(work); + return 1; +} + +static void copy_segments_to_skb(struct cvmx_wqe *work, struct sk_buff *skb) +{ + int segments = work->word2.s.bufs; + union cvmx_buf_ptr segment_ptr = work->packet_ptr; + int len = work->word1.len; + int segment_size; + + while (segments--) { + union cvmx_buf_ptr next_ptr; + + next_ptr = *(union cvmx_buf_ptr *) + cvmx_phys_to_ptr(segment_ptr.s.addr - 8); + + /* + * Octeon Errata PKI-100: The segment size is wrong. + * + * Until it is fixed, calculate the segment size based on + * the packet pool buffer size. + * When it is fixed, the following line should be replaced + * with this one: + * int segment_size = segment_ptr.s.size; + */ + segment_size = + CVMX_FPA_PACKET_POOL_SIZE - + (segment_ptr.s.addr - + (((segment_ptr.s.addr >> 7) - + segment_ptr.s.back) << 7)); + + /* Don't copy more than what is left in the packet */ + if (segment_size > len) + segment_size = len; + + /* Copy the data into the packet */ + skb_put_data(skb, cvmx_phys_to_ptr(segment_ptr.s.addr), + segment_size); + len -= segment_size; + segment_ptr = next_ptr; + } +} + +static int cvm_oct_poll(struct oct_rx_group *rx_group, int budget) +{ + const int coreid = cvmx_get_core_num(); + u64 old_group_mask; + u64 old_scratch; + int rx_count = 0; + int did_work_request = 0; + int packet_not_copied; + + /* Prefetch cvm_oct_device since we know we need it soon */ + prefetch(cvm_oct_device); + + if (USE_ASYNC_IOBDMA) { + /* Save scratch in case userspace is using it */ + CVMX_SYNCIOBDMA; + old_scratch = cvmx_scratch_read64(CVMX_SCR_SCRATCH); + } + + /* Only allow work for our group (and preserve priorities) */ + if (OCTEON_IS_MODEL(OCTEON_CN68XX)) { + old_group_mask = cvmx_read_csr(CVMX_SSO_PPX_GRP_MSK(coreid)); + cvmx_write_csr(CVMX_SSO_PPX_GRP_MSK(coreid), + BIT(rx_group->group)); + cvmx_read_csr(CVMX_SSO_PPX_GRP_MSK(coreid)); /* Flush */ + } else { + old_group_mask = cvmx_read_csr(CVMX_POW_PP_GRP_MSKX(coreid)); + cvmx_write_csr(CVMX_POW_PP_GRP_MSKX(coreid), + (old_group_mask & ~0xFFFFull) | + BIT(rx_group->group)); + } + + if (USE_ASYNC_IOBDMA) { + cvmx_pow_work_request_async(CVMX_SCR_SCRATCH, CVMX_POW_NO_WAIT); + did_work_request = 1; + } + + while (rx_count < budget) { + struct sk_buff *skb = NULL; + struct sk_buff **pskb = NULL; + int skb_in_hw; + struct cvmx_wqe *work; + int port; + + if (USE_ASYNC_IOBDMA && did_work_request) + work = cvmx_pow_work_response_async(CVMX_SCR_SCRATCH); + else + work = cvmx_pow_work_request_sync(CVMX_POW_NO_WAIT); + + prefetch(work); + did_work_request = 0; + if (!work) { + if (OCTEON_IS_MODEL(OCTEON_CN68XX)) { + cvmx_write_csr(CVMX_SSO_WQ_IQ_DIS, + BIT(rx_group->group)); + cvmx_write_csr(CVMX_SSO_WQ_INT, + BIT(rx_group->group)); + } else { + union cvmx_pow_wq_int wq_int; + + wq_int.u64 = 0; + wq_int.s.iq_dis = BIT(rx_group->group); + wq_int.s.wq_int = BIT(rx_group->group); + cvmx_write_csr(CVMX_POW_WQ_INT, wq_int.u64); + } + break; + } + pskb = (struct sk_buff **) + (cvm_oct_get_buffer_ptr(work->packet_ptr) - + sizeof(void *)); + prefetch(pskb); + + if (USE_ASYNC_IOBDMA && rx_count < (budget - 1)) { + cvmx_pow_work_request_async_nocheck(CVMX_SCR_SCRATCH, + CVMX_POW_NO_WAIT); + did_work_request = 1; + } + rx_count++; + + skb_in_hw = work->word2.s.bufs == 1; + if (likely(skb_in_hw)) { + skb = *pskb; + prefetch(&skb->head); + prefetch(&skb->len); + } + + if (octeon_has_feature(OCTEON_FEATURE_PKND)) + port = work->word0.pip.cn68xx.pknd; + else + port = work->word1.cn38xx.ipprt; + + prefetch(cvm_oct_device[port]); + + /* Immediately throw away all packets with receive errors */ + if (unlikely(work->word2.snoip.rcv_error)) { + if (cvm_oct_check_rcv_error(work)) + continue; + } + + /* + * We can only use the zero copy path if skbuffs are + * in the FPA pool and the packet fits in a single + * buffer. + */ + if (likely(skb_in_hw)) { + skb->data = skb->head + work->packet_ptr.s.addr - + cvmx_ptr_to_phys(skb->head); + prefetch(skb->data); + skb->len = work->word1.len; + skb_set_tail_pointer(skb, skb->len); + packet_not_copied = 1; + } else { + /* + * We have to copy the packet. First allocate + * an skbuff for it. + */ + skb = dev_alloc_skb(work->word1.len); + if (!skb) { + cvm_oct_free_work(work); + continue; + } + + /* + * Check if we've received a packet that was + * entirely stored in the work entry. + */ + if (unlikely(work->word2.s.bufs == 0)) { + u8 *ptr = work->packet_data; + + if (likely(!work->word2.s.not_IP)) { + /* + * The beginning of the packet + * moves for IP packets. + */ + if (work->word2.s.is_v6) + ptr += 2; + else + ptr += 6; + } + skb_put_data(skb, ptr, work->word1.len); + /* No packet buffers to free */ + } else { + copy_segments_to_skb(work, skb); + } + packet_not_copied = 0; + } + if (likely((port < TOTAL_NUMBER_OF_PORTS) && + cvm_oct_device[port])) { + struct net_device *dev = cvm_oct_device[port]; + + /* + * Only accept packets for devices that are + * currently up. + */ + if (likely(dev->flags & IFF_UP)) { + skb->protocol = eth_type_trans(skb, dev); + skb->dev = dev; + + if (unlikely(work->word2.s.not_IP || + work->word2.s.IP_exc || + work->word2.s.L4_error || + !work->word2.s.tcp_or_udp)) + skb->ip_summed = CHECKSUM_NONE; + else + skb->ip_summed = CHECKSUM_UNNECESSARY; + + /* Increment RX stats for virtual ports */ + if (port >= CVMX_PIP_NUM_INPUT_PORTS) { + dev->stats.rx_packets++; + dev->stats.rx_bytes += skb->len; + } + netif_receive_skb(skb); + } else { + /* + * Drop any packet received for a device that + * isn't up. + */ + dev->stats.rx_dropped++; + dev_kfree_skb_irq(skb); + } + } else { + /* + * Drop any packet received for a device that + * doesn't exist. + */ + printk_ratelimited("Port %d not controlled by Linux, packet dropped\n", + port); + dev_kfree_skb_irq(skb); + } + /* + * Check to see if the skbuff and work share the same + * packet buffer. + */ + if (likely(packet_not_copied)) { + /* + * This buffer needs to be replaced, increment + * the number of buffers we need to free by + * one. + */ + cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, + 1); + + cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, 1); + } else { + cvm_oct_free_work(work); + } + } + /* Restore the original POW group mask */ + if (OCTEON_IS_MODEL(OCTEON_CN68XX)) { + cvmx_write_csr(CVMX_SSO_PPX_GRP_MSK(coreid), old_group_mask); + cvmx_read_csr(CVMX_SSO_PPX_GRP_MSK(coreid)); /* Flush */ + } else { + cvmx_write_csr(CVMX_POW_PP_GRP_MSKX(coreid), old_group_mask); + } + + if (USE_ASYNC_IOBDMA) { + /* Restore the scratch area */ + cvmx_scratch_write64(CVMX_SCR_SCRATCH, old_scratch); + } + cvm_oct_rx_refill_pool(0); + + return rx_count; +} + +/** + * cvm_oct_napi_poll - the NAPI poll function. + * @napi: The NAPI instance. + * @budget: Maximum number of packets to receive. + * + * Returns the number of packets processed. + */ +static int cvm_oct_napi_poll(struct napi_struct *napi, int budget) +{ + struct oct_rx_group *rx_group = container_of(napi, struct oct_rx_group, + napi); + int rx_count; + + rx_count = cvm_oct_poll(rx_group, budget); + + if (rx_count < budget) { + /* No more work */ + napi_complete_done(napi, rx_count); + enable_irq(rx_group->irq); + } + return rx_count; +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +/** + * cvm_oct_poll_controller - poll for receive packets + * device. + * + * @dev: Device to poll. Unused + */ +void cvm_oct_poll_controller(struct net_device *dev) +{ + int i; + + if (!atomic_read(&oct_rx_ready)) + return; + + for (i = 0; i < ARRAY_SIZE(oct_rx_group); i++) { + if (!(pow_receive_groups & BIT(i))) + continue; + + cvm_oct_poll(&oct_rx_group[i], 16); + } +} +#endif + +void cvm_oct_rx_initialize(void) +{ + int i; + struct net_device *dev_for_napi = NULL; + + for (i = 0; i < TOTAL_NUMBER_OF_PORTS; i++) { + if (cvm_oct_device[i]) { + dev_for_napi = cvm_oct_device[i]; + break; + } + } + + if (!dev_for_napi) + panic("No net_devices were allocated."); + + for (i = 0; i < ARRAY_SIZE(oct_rx_group); i++) { + int ret; + + if (!(pow_receive_groups & BIT(i))) + continue; + + netif_napi_add_weight(dev_for_napi, &oct_rx_group[i].napi, + cvm_oct_napi_poll, rx_napi_weight); + napi_enable(&oct_rx_group[i].napi); + + oct_rx_group[i].irq = OCTEON_IRQ_WORKQ0 + i; + oct_rx_group[i].group = i; + + /* Register an IRQ handler to receive POW interrupts */ + ret = request_irq(oct_rx_group[i].irq, cvm_oct_do_interrupt, 0, + "Ethernet", &oct_rx_group[i].napi); + if (ret) + panic("Could not acquire Ethernet IRQ %d\n", + oct_rx_group[i].irq); + + disable_irq_nosync(oct_rx_group[i].irq); + + /* Enable POW interrupt when our port has at least one packet */ + if (OCTEON_IS_MODEL(OCTEON_CN68XX)) { + union cvmx_sso_wq_int_thrx int_thr; + union cvmx_pow_wq_int_pc int_pc; + + int_thr.u64 = 0; + int_thr.s.tc_en = 1; + int_thr.s.tc_thr = 1; + cvmx_write_csr(CVMX_SSO_WQ_INT_THRX(i), int_thr.u64); + + int_pc.u64 = 0; + int_pc.s.pc_thr = 5; + cvmx_write_csr(CVMX_SSO_WQ_INT_PC, int_pc.u64); + } else { + union cvmx_pow_wq_int_thrx int_thr; + union cvmx_pow_wq_int_pc int_pc; + + int_thr.u64 = 0; + int_thr.s.tc_en = 1; + int_thr.s.tc_thr = 1; + cvmx_write_csr(CVMX_POW_WQ_INT_THRX(i), int_thr.u64); + + int_pc.u64 = 0; + int_pc.s.pc_thr = 5; + cvmx_write_csr(CVMX_POW_WQ_INT_PC, int_pc.u64); + } + + /* Schedule NAPI now. This will indirectly enable the + * interrupt. + */ + napi_schedule(&oct_rx_group[i].napi); + } + atomic_inc(&oct_rx_ready); +} + +void cvm_oct_rx_shutdown(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(oct_rx_group); i++) { + if (!(pow_receive_groups & BIT(i))) + continue; + + /* Disable POW interrupt */ + if (OCTEON_IS_MODEL(OCTEON_CN68XX)) + cvmx_write_csr(CVMX_SSO_WQ_INT_THRX(i), 0); + else + cvmx_write_csr(CVMX_POW_WQ_INT_THRX(i), 0); + + /* Free the interrupt handler */ + free_irq(oct_rx_group[i].irq, cvm_oct_device); + + netif_napi_del(&oct_rx_group[i].napi); + } +} diff --git a/drivers/staging/octeon/ethernet-rx.h b/drivers/staging/octeon/ethernet-rx.h new file mode 100644 index 000000000..ff6482fa2 --- /dev/null +++ b/drivers/staging/octeon/ethernet-rx.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2007 Cavium Networks + */ + +void cvm_oct_poll_controller(struct net_device *dev); +void cvm_oct_rx_initialize(void); +void cvm_oct_rx_shutdown(void); + +static inline void cvm_oct_rx_refill_pool(int fill_threshold) +{ + int number_to_free; + int num_freed; + /* Refill the packet buffer pool */ + number_to_free = + cvmx_fau_fetch_and_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0); + + if (number_to_free > fill_threshold) { + cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, + -number_to_free); + num_freed = cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, + CVMX_FPA_PACKET_POOL_SIZE, + number_to_free); + if (num_freed != number_to_free) { + cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, + number_to_free - num_freed); + } + } +} diff --git a/drivers/staging/octeon/ethernet-sgmii.c b/drivers/staging/octeon/ethernet-sgmii.c new file mode 100644 index 000000000..d7fbd9159 --- /dev/null +++ b/drivers/staging/octeon/ethernet-sgmii.c @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2007 Cavium Networks + */ + +#include <linux/phy.h> +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/ratelimit.h> +#include <net/dst.h> + +#include "octeon-ethernet.h" +#include "ethernet-defines.h" +#include "ethernet-util.h" +#include "ethernet-mdio.h" + +int cvm_oct_sgmii_open(struct net_device *dev) +{ + return cvm_oct_common_open(dev, cvm_oct_link_poll); +} + +int cvm_oct_sgmii_init(struct net_device *dev) +{ + cvm_oct_common_init(dev); + + /* FIXME: Need autoneg logic */ + return 0; +} diff --git a/drivers/staging/octeon/ethernet-spi.c b/drivers/staging/octeon/ethernet-spi.c new file mode 100644 index 000000000..699c98c5e --- /dev/null +++ b/drivers/staging/octeon/ethernet-spi.c @@ -0,0 +1,226 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2007 Cavium Networks + */ + +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/interrupt.h> +#include <net/dst.h> + +#include "octeon-ethernet.h" +#include "ethernet-defines.h" +#include "ethernet-util.h" + +static int number_spi_ports; +static int need_retrain[2] = { 0, 0 }; + +static void cvm_oct_spxx_int_pr(union cvmx_spxx_int_reg spx_int_reg, int index) +{ + if (spx_int_reg.s.spf) + pr_err("SPI%d: SRX Spi4 interface down\n", index); + if (spx_int_reg.s.calerr) + pr_err("SPI%d: SRX Spi4 Calendar table parity error\n", index); + if (spx_int_reg.s.syncerr) + pr_err("SPI%d: SRX Consecutive Spi4 DIP4 errors have exceeded SPX_ERR_CTL[ERRCNT]\n", + index); + if (spx_int_reg.s.diperr) + pr_err("SPI%d: SRX Spi4 DIP4 error\n", index); + if (spx_int_reg.s.tpaovr) + pr_err("SPI%d: SRX Selected port has hit TPA overflow\n", + index); + if (spx_int_reg.s.rsverr) + pr_err("SPI%d: SRX Spi4 reserved control word detected\n", + index); + if (spx_int_reg.s.drwnng) + pr_err("SPI%d: SRX Spi4 receive FIFO drowning/overflow\n", + index); + if (spx_int_reg.s.clserr) + pr_err("SPI%d: SRX Spi4 packet closed on non-16B alignment without EOP\n", + index); + if (spx_int_reg.s.spiovr) + pr_err("SPI%d: SRX Spi4 async FIFO overflow\n", index); + if (spx_int_reg.s.abnorm) + pr_err("SPI%d: SRX Abnormal packet termination (ERR bit)\n", + index); + if (spx_int_reg.s.prtnxa) + pr_err("SPI%d: SRX Port out of range\n", index); +} + +static void cvm_oct_stxx_int_pr(union cvmx_stxx_int_reg stx_int_reg, int index) +{ + if (stx_int_reg.s.syncerr) + pr_err("SPI%d: STX Interface encountered a fatal error\n", + index); + if (stx_int_reg.s.frmerr) + pr_err("SPI%d: STX FRMCNT has exceeded STX_DIP_CNT[MAXFRM]\n", + index); + if (stx_int_reg.s.unxfrm) + pr_err("SPI%d: STX Unexpected framing sequence\n", index); + if (stx_int_reg.s.nosync) + pr_err("SPI%d: STX ERRCNT has exceeded STX_DIP_CNT[MAXDIP]\n", + index); + if (stx_int_reg.s.diperr) + pr_err("SPI%d: STX DIP2 error on the Spi4 Status channel\n", + index); + if (stx_int_reg.s.datovr) + pr_err("SPI%d: STX Spi4 FIFO overflow error\n", index); + if (stx_int_reg.s.ovrbst) + pr_err("SPI%d: STX Transmit packet burst too big\n", index); + if (stx_int_reg.s.calpar1) + pr_err("SPI%d: STX Calendar Table Parity Error Bank%d\n", + index, 1); + if (stx_int_reg.s.calpar0) + pr_err("SPI%d: STX Calendar Table Parity Error Bank%d\n", + index, 0); +} + +static irqreturn_t cvm_oct_spi_spx_int(int index) +{ + union cvmx_spxx_int_reg spx_int_reg; + union cvmx_stxx_int_reg stx_int_reg; + + spx_int_reg.u64 = cvmx_read_csr(CVMX_SPXX_INT_REG(index)); + cvmx_write_csr(CVMX_SPXX_INT_REG(index), spx_int_reg.u64); + if (!need_retrain[index]) { + spx_int_reg.u64 &= cvmx_read_csr(CVMX_SPXX_INT_MSK(index)); + cvm_oct_spxx_int_pr(spx_int_reg, index); + } + + stx_int_reg.u64 = cvmx_read_csr(CVMX_STXX_INT_REG(index)); + cvmx_write_csr(CVMX_STXX_INT_REG(index), stx_int_reg.u64); + if (!need_retrain[index]) { + stx_int_reg.u64 &= cvmx_read_csr(CVMX_STXX_INT_MSK(index)); + cvm_oct_stxx_int_pr(stx_int_reg, index); + } + + cvmx_write_csr(CVMX_SPXX_INT_MSK(index), 0); + cvmx_write_csr(CVMX_STXX_INT_MSK(index), 0); + need_retrain[index] = 1; + + return IRQ_HANDLED; +} + +static irqreturn_t cvm_oct_spi_rml_interrupt(int cpl, void *dev_id) +{ + irqreturn_t return_status = IRQ_NONE; + union cvmx_npi_rsl_int_blocks rsl_int_blocks; + + /* Check and see if this interrupt was caused by the GMX block */ + rsl_int_blocks.u64 = cvmx_read_csr(CVMX_NPI_RSL_INT_BLOCKS); + if (rsl_int_blocks.s.spx1) /* 19 - SPX1_INT_REG & STX1_INT_REG */ + return_status = cvm_oct_spi_spx_int(1); + + if (rsl_int_blocks.s.spx0) /* 18 - SPX0_INT_REG & STX0_INT_REG */ + return_status = cvm_oct_spi_spx_int(0); + + return return_status; +} + +static void cvm_oct_spi_enable_error_reporting(int interface) +{ + union cvmx_spxx_int_msk spxx_int_msk; + union cvmx_stxx_int_msk stxx_int_msk; + + spxx_int_msk.u64 = cvmx_read_csr(CVMX_SPXX_INT_MSK(interface)); + spxx_int_msk.s.calerr = 1; + spxx_int_msk.s.syncerr = 1; + spxx_int_msk.s.diperr = 1; + spxx_int_msk.s.tpaovr = 1; + spxx_int_msk.s.rsverr = 1; + spxx_int_msk.s.drwnng = 1; + spxx_int_msk.s.clserr = 1; + spxx_int_msk.s.spiovr = 1; + spxx_int_msk.s.abnorm = 1; + spxx_int_msk.s.prtnxa = 1; + cvmx_write_csr(CVMX_SPXX_INT_MSK(interface), spxx_int_msk.u64); + + stxx_int_msk.u64 = cvmx_read_csr(CVMX_STXX_INT_MSK(interface)); + stxx_int_msk.s.frmerr = 1; + stxx_int_msk.s.unxfrm = 1; + stxx_int_msk.s.nosync = 1; + stxx_int_msk.s.diperr = 1; + stxx_int_msk.s.datovr = 1; + stxx_int_msk.s.ovrbst = 1; + stxx_int_msk.s.calpar1 = 1; + stxx_int_msk.s.calpar0 = 1; + cvmx_write_csr(CVMX_STXX_INT_MSK(interface), stxx_int_msk.u64); +} + +static void cvm_oct_spi_poll(struct net_device *dev) +{ + static int spi4000_port; + struct octeon_ethernet *priv = netdev_priv(dev); + int interface; + + for (interface = 0; interface < 2; interface++) { + if ((priv->port == interface * 16) && need_retrain[interface]) { + if (cvmx_spi_restart_interface + (interface, CVMX_SPI_MODE_DUPLEX, 10) == 0) { + need_retrain[interface] = 0; + cvm_oct_spi_enable_error_reporting(interface); + } + } + + /* + * The SPI4000 TWSI interface is very slow. In order + * not to bring the system to a crawl, we only poll a + * single port every second. This means negotiation + * speed changes take up to 10 seconds, but at least + * we don't waste absurd amounts of time waiting for + * TWSI. + */ + if (priv->port == spi4000_port) { + /* + * This function does nothing if it is called on an + * interface without a SPI4000. + */ + cvmx_spi4000_check_speed(interface, priv->port); + /* + * Normal ordering increments. By decrementing + * we only match once per iteration. + */ + spi4000_port--; + if (spi4000_port < 0) + spi4000_port = 10; + } + } +} + +int cvm_oct_spi_init(struct net_device *dev) +{ + int r; + struct octeon_ethernet *priv = netdev_priv(dev); + + if (number_spi_ports == 0) { + r = request_irq(OCTEON_IRQ_RML, cvm_oct_spi_rml_interrupt, + IRQF_SHARED, "SPI", &number_spi_ports); + if (r) + return r; + } + number_spi_ports++; + + if (priv->port == 0 || priv->port == 16) { + cvm_oct_spi_enable_error_reporting(INTERFACE(priv->port)); + priv->poll = cvm_oct_spi_poll; + } + cvm_oct_common_init(dev); + return 0; +} + +void cvm_oct_spi_uninit(struct net_device *dev) +{ + int interface; + + cvm_oct_common_uninit(dev); + number_spi_ports--; + if (number_spi_ports == 0) { + for (interface = 0; interface < 2; interface++) { + cvmx_write_csr(CVMX_SPXX_INT_MSK(interface), 0); + cvmx_write_csr(CVMX_STXX_INT_MSK(interface), 0); + } + free_irq(OCTEON_IRQ_RML, &number_spi_ports); + } +} diff --git a/drivers/staging/octeon/ethernet-tx.c b/drivers/staging/octeon/ethernet-tx.c new file mode 100644 index 000000000..a36e36701 --- /dev/null +++ b/drivers/staging/octeon/ethernet-tx.c @@ -0,0 +1,716 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2010 Cavium Networks + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/ip.h> +#include <linux/ratelimit.h> +#include <linux/string.h> +#include <linux/interrupt.h> +#include <net/dst.h> +#ifdef CONFIG_XFRM +#include <linux/xfrm.h> +#include <net/xfrm.h> +#endif /* CONFIG_XFRM */ + +#include <linux/atomic.h> +#include <net/sch_generic.h> + +#include "octeon-ethernet.h" +#include "ethernet-defines.h" +#include "ethernet-tx.h" +#include "ethernet-util.h" + +#define CVM_OCT_SKB_CB(skb) ((u64 *)((skb)->cb)) + +/* + * You can define GET_SKBUFF_QOS() to override how the skbuff output + * function determines which output queue is used. The default + * implementation always uses the base queue for the port. If, for + * example, you wanted to use the skb->priority field, define + * GET_SKBUFF_QOS as: #define GET_SKBUFF_QOS(skb) ((skb)->priority) + */ +#ifndef GET_SKBUFF_QOS +#define GET_SKBUFF_QOS(skb) 0 +#endif + +static void cvm_oct_tx_do_cleanup(unsigned long arg); +static DECLARE_TASKLET_OLD(cvm_oct_tx_cleanup_tasklet, cvm_oct_tx_do_cleanup); + +/* Maximum number of SKBs to try to free per xmit packet. */ +#define MAX_SKB_TO_FREE (MAX_OUT_QUEUE_DEPTH * 2) + +static inline int cvm_oct_adjust_skb_to_free(int skb_to_free, int fau) +{ + int undo; + + undo = skb_to_free > 0 ? MAX_SKB_TO_FREE : skb_to_free + + MAX_SKB_TO_FREE; + if (undo > 0) + cvmx_fau_atomic_add32(fau, -undo); + skb_to_free = -skb_to_free > MAX_SKB_TO_FREE ? MAX_SKB_TO_FREE : + -skb_to_free; + return skb_to_free; +} + +static void cvm_oct_kick_tx_poll_watchdog(void) +{ + union cvmx_ciu_timx ciu_timx; + + ciu_timx.u64 = 0; + ciu_timx.s.one_shot = 1; + ciu_timx.s.len = cvm_oct_tx_poll_interval; + cvmx_write_csr(CVMX_CIU_TIMX(1), ciu_timx.u64); +} + +static void cvm_oct_free_tx_skbs(struct net_device *dev) +{ + int skb_to_free; + int qos, queues_per_port; + int total_freed = 0; + int total_remaining = 0; + unsigned long flags; + struct octeon_ethernet *priv = netdev_priv(dev); + + queues_per_port = cvmx_pko_get_num_queues(priv->port); + /* Drain any pending packets in the free list */ + for (qos = 0; qos < queues_per_port; qos++) { + if (skb_queue_len(&priv->tx_free_list[qos]) == 0) + continue; + skb_to_free = cvmx_fau_fetch_and_add32(priv->fau + qos * 4, + MAX_SKB_TO_FREE); + skb_to_free = cvm_oct_adjust_skb_to_free(skb_to_free, + priv->fau + qos * 4); + total_freed += skb_to_free; + if (skb_to_free > 0) { + struct sk_buff *to_free_list = NULL; + + spin_lock_irqsave(&priv->tx_free_list[qos].lock, flags); + while (skb_to_free > 0) { + struct sk_buff *t; + + t = __skb_dequeue(&priv->tx_free_list[qos]); + t->next = to_free_list; + to_free_list = t; + skb_to_free--; + } + spin_unlock_irqrestore(&priv->tx_free_list[qos].lock, + flags); + /* Do the actual freeing outside of the lock. */ + while (to_free_list) { + struct sk_buff *t = to_free_list; + + to_free_list = to_free_list->next; + dev_kfree_skb_any(t); + } + } + total_remaining += skb_queue_len(&priv->tx_free_list[qos]); + } + if (total_remaining < MAX_OUT_QUEUE_DEPTH && netif_queue_stopped(dev)) + netif_wake_queue(dev); + if (total_remaining) + cvm_oct_kick_tx_poll_watchdog(); +} + +/** + * cvm_oct_xmit - transmit a packet + * @skb: Packet to send + * @dev: Device info structure + * + * Returns Always returns NETDEV_TX_OK + */ +netdev_tx_t cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev) +{ + union cvmx_pko_command_word0 pko_command; + union cvmx_buf_ptr hw_buffer; + u64 old_scratch; + u64 old_scratch2; + int qos; + int i; + enum {QUEUE_CORE, QUEUE_HW, QUEUE_DROP} queue_type; + struct octeon_ethernet *priv = netdev_priv(dev); + struct sk_buff *to_free_list; + int skb_to_free; + int buffers_to_free; + u32 total_to_clean; + unsigned long flags; +#if REUSE_SKBUFFS_WITHOUT_FREE + unsigned char *fpa_head; +#endif + + /* + * Prefetch the private data structure. It is larger than the + * one cache line. + */ + prefetch(priv); + + /* + * The check on CVMX_PKO_QUEUES_PER_PORT_* is designed to + * completely remove "qos" in the event neither interface + * supports multiple queues per port. + */ + if ((CVMX_PKO_QUEUES_PER_PORT_INTERFACE0 > 1) || + (CVMX_PKO_QUEUES_PER_PORT_INTERFACE1 > 1)) { + qos = GET_SKBUFF_QOS(skb); + if (qos <= 0) + qos = 0; + else if (qos >= cvmx_pko_get_num_queues(priv->port)) + qos = 0; + } else { + qos = 0; + } + + if (USE_ASYNC_IOBDMA) { + /* Save scratch in case userspace is using it */ + CVMX_SYNCIOBDMA; + old_scratch = cvmx_scratch_read64(CVMX_SCR_SCRATCH); + old_scratch2 = cvmx_scratch_read64(CVMX_SCR_SCRATCH + 8); + + /* + * Fetch and increment the number of packets to be + * freed. + */ + cvmx_fau_async_fetch_and_add32(CVMX_SCR_SCRATCH + 8, + FAU_NUM_PACKET_BUFFERS_TO_FREE, + 0); + cvmx_fau_async_fetch_and_add32(CVMX_SCR_SCRATCH, + priv->fau + qos * 4, + MAX_SKB_TO_FREE); + } + + /* + * We have space for 6 segment pointers, If there will be more + * than that, we must linearize. + */ + if (unlikely(skb_shinfo(skb)->nr_frags > 5)) { + if (unlikely(__skb_linearize(skb))) { + queue_type = QUEUE_DROP; + if (USE_ASYNC_IOBDMA) { + /* + * Get the number of skbuffs in use + * by the hardware + */ + CVMX_SYNCIOBDMA; + skb_to_free = + cvmx_scratch_read64(CVMX_SCR_SCRATCH); + } else { + /* + * Get the number of skbuffs in use + * by the hardware + */ + skb_to_free = + cvmx_fau_fetch_and_add32(priv->fau + + qos * 4, + MAX_SKB_TO_FREE); + } + skb_to_free = cvm_oct_adjust_skb_to_free(skb_to_free, + priv->fau + + qos * 4); + spin_lock_irqsave(&priv->tx_free_list[qos].lock, flags); + goto skip_xmit; + } + } + + /* + * The CN3XXX series of parts has an errata (GMX-401) which + * causes the GMX block to hang if a collision occurs towards + * the end of a <68 byte packet. As a workaround for this, we + * pad packets to be 68 bytes whenever we are in half duplex + * mode. We don't handle the case of having a small packet but + * no room to add the padding. The kernel should always give + * us at least a cache line + */ + if ((skb->len < 64) && OCTEON_IS_MODEL(OCTEON_CN3XXX)) { + union cvmx_gmxx_prtx_cfg gmx_prt_cfg; + int interface = INTERFACE(priv->port); + int index = INDEX(priv->port); + + if (interface < 2) { + /* We only need to pad packet in half duplex mode */ + gmx_prt_cfg.u64 = + cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); + if (gmx_prt_cfg.s.duplex == 0) { + int add_bytes = 64 - skb->len; + + if ((skb_tail_pointer(skb) + add_bytes) <= + skb_end_pointer(skb)) + __skb_put_zero(skb, add_bytes); + } + } + } + + /* Build the PKO command */ + pko_command.u64 = 0; +#ifdef __LITTLE_ENDIAN + pko_command.s.le = 1; +#endif + pko_command.s.n2 = 1; /* Don't pollute L2 with the outgoing packet */ + pko_command.s.segs = 1; + pko_command.s.total_bytes = skb->len; + pko_command.s.size0 = CVMX_FAU_OP_SIZE_32; + pko_command.s.subone0 = 1; + + pko_command.s.dontfree = 1; + + /* Build the PKO buffer pointer */ + hw_buffer.u64 = 0; + if (skb_shinfo(skb)->nr_frags == 0) { + hw_buffer.s.addr = XKPHYS_TO_PHYS((uintptr_t)skb->data); + hw_buffer.s.pool = 0; + hw_buffer.s.size = skb->len; + } else { + hw_buffer.s.addr = XKPHYS_TO_PHYS((uintptr_t)skb->data); + hw_buffer.s.pool = 0; + hw_buffer.s.size = skb_headlen(skb); + CVM_OCT_SKB_CB(skb)[0] = hw_buffer.u64; + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { + skb_frag_t *fs = skb_shinfo(skb)->frags + i; + + hw_buffer.s.addr = + XKPHYS_TO_PHYS((uintptr_t)skb_frag_address(fs)); + hw_buffer.s.size = skb_frag_size(fs); + CVM_OCT_SKB_CB(skb)[i + 1] = hw_buffer.u64; + } + hw_buffer.s.addr = + XKPHYS_TO_PHYS((uintptr_t)CVM_OCT_SKB_CB(skb)); + hw_buffer.s.size = skb_shinfo(skb)->nr_frags + 1; + pko_command.s.segs = skb_shinfo(skb)->nr_frags + 1; + pko_command.s.gather = 1; + goto dont_put_skbuff_in_hw; + } + + /* + * See if we can put this skb in the FPA pool. Any strange + * behavior from the Linux networking stack will most likely + * be caused by a bug in the following code. If some field is + * in use by the network stack and gets carried over when a + * buffer is reused, bad things may happen. If in doubt and + * you dont need the absolute best performance, disable the + * define REUSE_SKBUFFS_WITHOUT_FREE. The reuse of buffers has + * shown a 25% increase in performance under some loads. + */ +#if REUSE_SKBUFFS_WITHOUT_FREE + fpa_head = skb->head + 256 - ((unsigned long)skb->head & 0x7f); + if (unlikely(skb->data < fpa_head)) { + /* TX buffer beginning can't meet FPA alignment constraints */ + goto dont_put_skbuff_in_hw; + } + if (unlikely + ((skb_end_pointer(skb) - fpa_head) < CVMX_FPA_PACKET_POOL_SIZE)) { + /* TX buffer isn't large enough for the FPA */ + goto dont_put_skbuff_in_hw; + } + if (unlikely(skb_shared(skb))) { + /* TX buffer sharing data with someone else */ + goto dont_put_skbuff_in_hw; + } + if (unlikely(skb_cloned(skb))) { + /* TX buffer has been cloned */ + goto dont_put_skbuff_in_hw; + } + if (unlikely(skb_header_cloned(skb))) { + /* TX buffer header has been cloned */ + goto dont_put_skbuff_in_hw; + } + if (unlikely(skb->destructor)) { + /* TX buffer has a destructor */ + goto dont_put_skbuff_in_hw; + } + if (unlikely(skb_shinfo(skb)->nr_frags)) { + /* TX buffer has fragments */ + goto dont_put_skbuff_in_hw; + } + if (unlikely + (skb->truesize != + sizeof(*skb) + skb_end_offset(skb))) { + /* TX buffer truesize has been changed */ + goto dont_put_skbuff_in_hw; + } + + /* + * We can use this buffer in the FPA. We don't need the FAU + * update anymore + */ + pko_command.s.dontfree = 0; + + hw_buffer.s.back = ((unsigned long)skb->data >> 7) - + ((unsigned long)fpa_head >> 7); + + *(struct sk_buff **)(fpa_head - sizeof(void *)) = skb; + + /* + * The skbuff will be reused without ever being freed. We must + * cleanup a bunch of core things. + */ + dst_release(skb_dst(skb)); + skb_dst_set(skb, NULL); + skb_ext_reset(skb); + nf_reset_ct(skb); + skb_reset_redirect(skb); + +#ifdef CONFIG_NET_SCHED + skb->tc_index = 0; +#endif /* CONFIG_NET_SCHED */ +#endif /* REUSE_SKBUFFS_WITHOUT_FREE */ + +dont_put_skbuff_in_hw: + + /* Check if we can use the hardware checksumming */ + if ((skb->protocol == htons(ETH_P_IP)) && + (ip_hdr(skb)->version == 4) && + (ip_hdr(skb)->ihl == 5) && + ((ip_hdr(skb)->frag_off == 0) || + (ip_hdr(skb)->frag_off == htons(1 << 14))) && + ((ip_hdr(skb)->protocol == IPPROTO_TCP) || + (ip_hdr(skb)->protocol == IPPROTO_UDP))) { + /* Use hardware checksum calc */ + pko_command.s.ipoffp1 = skb_network_offset(skb) + 1; + } + + if (USE_ASYNC_IOBDMA) { + /* Get the number of skbuffs in use by the hardware */ + CVMX_SYNCIOBDMA; + skb_to_free = cvmx_scratch_read64(CVMX_SCR_SCRATCH); + buffers_to_free = cvmx_scratch_read64(CVMX_SCR_SCRATCH + 8); + } else { + /* Get the number of skbuffs in use by the hardware */ + skb_to_free = cvmx_fau_fetch_and_add32(priv->fau + qos * 4, + MAX_SKB_TO_FREE); + buffers_to_free = + cvmx_fau_fetch_and_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0); + } + + skb_to_free = cvm_oct_adjust_skb_to_free(skb_to_free, + priv->fau + qos * 4); + + /* + * If we're sending faster than the receive can free them then + * don't do the HW free. + */ + if ((buffers_to_free < -100) && !pko_command.s.dontfree) + pko_command.s.dontfree = 1; + + if (pko_command.s.dontfree) { + queue_type = QUEUE_CORE; + pko_command.s.reg0 = priv->fau + qos * 4; + } else { + queue_type = QUEUE_HW; + } + if (USE_ASYNC_IOBDMA) + cvmx_fau_async_fetch_and_add32(CVMX_SCR_SCRATCH, + FAU_TOTAL_TX_TO_CLEAN, 1); + + spin_lock_irqsave(&priv->tx_free_list[qos].lock, flags); + + /* Drop this packet if we have too many already queued to the HW */ + if (unlikely(skb_queue_len(&priv->tx_free_list[qos]) >= + MAX_OUT_QUEUE_DEPTH)) { + if (dev->tx_queue_len != 0) { + /* Drop the lock when notifying the core. */ + spin_unlock_irqrestore(&priv->tx_free_list[qos].lock, + flags); + netif_stop_queue(dev); + spin_lock_irqsave(&priv->tx_free_list[qos].lock, + flags); + } else { + /* If not using normal queueing. */ + queue_type = QUEUE_DROP; + goto skip_xmit; + } + } + + cvmx_pko_send_packet_prepare(priv->port, priv->queue + qos, + CVMX_PKO_LOCK_NONE); + + /* Send the packet to the output queue */ + if (unlikely(cvmx_pko_send_packet_finish(priv->port, + priv->queue + qos, + pko_command, hw_buffer, + CVMX_PKO_LOCK_NONE))) { + printk_ratelimited("%s: Failed to send the packet\n", + dev->name); + queue_type = QUEUE_DROP; + } +skip_xmit: + to_free_list = NULL; + + switch (queue_type) { + case QUEUE_DROP: + skb->next = to_free_list; + to_free_list = skb; + dev->stats.tx_dropped++; + break; + case QUEUE_HW: + cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, -1); + break; + case QUEUE_CORE: + __skb_queue_tail(&priv->tx_free_list[qos], skb); + break; + default: + BUG(); + } + + while (skb_to_free > 0) { + struct sk_buff *t = __skb_dequeue(&priv->tx_free_list[qos]); + + t->next = to_free_list; + to_free_list = t; + skb_to_free--; + } + + spin_unlock_irqrestore(&priv->tx_free_list[qos].lock, flags); + + /* Do the actual freeing outside of the lock. */ + while (to_free_list) { + struct sk_buff *t = to_free_list; + + to_free_list = to_free_list->next; + dev_kfree_skb_any(t); + } + + if (USE_ASYNC_IOBDMA) { + CVMX_SYNCIOBDMA; + total_to_clean = cvmx_scratch_read64(CVMX_SCR_SCRATCH); + /* Restore the scratch area */ + cvmx_scratch_write64(CVMX_SCR_SCRATCH, old_scratch); + cvmx_scratch_write64(CVMX_SCR_SCRATCH + 8, old_scratch2); + } else { + total_to_clean = + cvmx_fau_fetch_and_add32(FAU_TOTAL_TX_TO_CLEAN, 1); + } + + if (total_to_clean & 0x3ff) { + /* + * Schedule the cleanup tasklet every 1024 packets for + * the pathological case of high traffic on one port + * delaying clean up of packets on a different port + * that is blocked waiting for the cleanup. + */ + tasklet_schedule(&cvm_oct_tx_cleanup_tasklet); + } + + cvm_oct_kick_tx_poll_watchdog(); + + return NETDEV_TX_OK; +} + +/** + * cvm_oct_xmit_pow - transmit a packet to the POW + * @skb: Packet to send + * @dev: Device info structure + * Returns Always returns zero + */ +netdev_tx_t cvm_oct_xmit_pow(struct sk_buff *skb, struct net_device *dev) +{ + struct octeon_ethernet *priv = netdev_priv(dev); + void *packet_buffer; + void *copy_location; + + /* Get a work queue entry */ + struct cvmx_wqe *work = cvmx_fpa_alloc(CVMX_FPA_WQE_POOL); + + if (unlikely(!work)) { + printk_ratelimited("%s: Failed to allocate a work queue entry\n", + dev->name); + dev->stats.tx_dropped++; + dev_kfree_skb_any(skb); + return 0; + } + + /* Get a packet buffer */ + packet_buffer = cvmx_fpa_alloc(CVMX_FPA_PACKET_POOL); + if (unlikely(!packet_buffer)) { + printk_ratelimited("%s: Failed to allocate a packet buffer\n", + dev->name); + cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, 1); + dev->stats.tx_dropped++; + dev_kfree_skb_any(skb); + return 0; + } + + /* + * Calculate where we need to copy the data to. We need to + * leave 8 bytes for a next pointer (unused). We also need to + * include any configure skip. Then we need to align the IP + * packet src and dest into the same 64bit word. The below + * calculation may add a little extra, but that doesn't + * hurt. + */ + copy_location = packet_buffer + sizeof(u64); + copy_location += ((CVMX_HELPER_FIRST_MBUFF_SKIP + 7) & 0xfff8) + 6; + + /* + * We have to copy the packet since whoever processes this + * packet will free it to a hardware pool. We can't use the + * trick of counting outstanding packets like in + * cvm_oct_xmit. + */ + memcpy(copy_location, skb->data, skb->len); + + /* + * Fill in some of the work queue fields. We may need to add + * more if the software at the other end needs them. + */ + if (!OCTEON_IS_MODEL(OCTEON_CN68XX)) + work->word0.pip.cn38xx.hw_chksum = skb->csum; + work->word1.len = skb->len; + cvmx_wqe_set_port(work, priv->port); + cvmx_wqe_set_qos(work, priv->port & 0x7); + cvmx_wqe_set_grp(work, pow_send_group); + work->word1.tag_type = CVMX_HELPER_INPUT_TAG_TYPE; + work->word1.tag = pow_send_group; /* FIXME */ + /* Default to zero. Sets of zero later are commented out */ + work->word2.u64 = 0; + work->word2.s.bufs = 1; + work->packet_ptr.u64 = 0; + work->packet_ptr.s.addr = cvmx_ptr_to_phys(copy_location); + work->packet_ptr.s.pool = CVMX_FPA_PACKET_POOL; + work->packet_ptr.s.size = CVMX_FPA_PACKET_POOL_SIZE; + work->packet_ptr.s.back = (copy_location - packet_buffer) >> 7; + + if (skb->protocol == htons(ETH_P_IP)) { + work->word2.s.ip_offset = 14; +#if 0 + work->word2.s.vlan_valid = 0; /* FIXME */ + work->word2.s.vlan_cfi = 0; /* FIXME */ + work->word2.s.vlan_id = 0; /* FIXME */ + work->word2.s.dec_ipcomp = 0; /* FIXME */ +#endif + work->word2.s.tcp_or_udp = + (ip_hdr(skb)->protocol == IPPROTO_TCP) || + (ip_hdr(skb)->protocol == IPPROTO_UDP); +#if 0 + /* FIXME */ + work->word2.s.dec_ipsec = 0; + /* We only support IPv4 right now */ + work->word2.s.is_v6 = 0; + /* Hardware would set to zero */ + work->word2.s.software = 0; + /* No error, packet is internal */ + work->word2.s.L4_error = 0; +#endif + work->word2.s.is_frag = !((ip_hdr(skb)->frag_off == 0) || + (ip_hdr(skb)->frag_off == + cpu_to_be16(1 << 14))); +#if 0 + /* Assume Linux is sending a good packet */ + work->word2.s.IP_exc = 0; +#endif + work->word2.s.is_bcast = (skb->pkt_type == PACKET_BROADCAST); + work->word2.s.is_mcast = (skb->pkt_type == PACKET_MULTICAST); +#if 0 + /* This is an IP packet */ + work->word2.s.not_IP = 0; + /* No error, packet is internal */ + work->word2.s.rcv_error = 0; + /* No error, packet is internal */ + work->word2.s.err_code = 0; +#endif + + /* + * When copying the data, include 4 bytes of the + * ethernet header to align the same way hardware + * does. + */ + memcpy(work->packet_data, skb->data + 10, + sizeof(work->packet_data)); + } else { +#if 0 + work->word2.snoip.vlan_valid = 0; /* FIXME */ + work->word2.snoip.vlan_cfi = 0; /* FIXME */ + work->word2.snoip.vlan_id = 0; /* FIXME */ + work->word2.snoip.software = 0; /* Hardware would set to zero */ +#endif + work->word2.snoip.is_rarp = skb->protocol == htons(ETH_P_RARP); + work->word2.snoip.is_arp = skb->protocol == htons(ETH_P_ARP); + work->word2.snoip.is_bcast = + (skb->pkt_type == PACKET_BROADCAST); + work->word2.snoip.is_mcast = + (skb->pkt_type == PACKET_MULTICAST); + work->word2.snoip.not_IP = 1; /* IP was done up above */ +#if 0 + /* No error, packet is internal */ + work->word2.snoip.rcv_error = 0; + /* No error, packet is internal */ + work->word2.snoip.err_code = 0; +#endif + memcpy(work->packet_data, skb->data, sizeof(work->packet_data)); + } + + /* Submit the packet to the POW */ + cvmx_pow_work_submit(work, work->word1.tag, work->word1.tag_type, + cvmx_wqe_get_qos(work), cvmx_wqe_get_grp(work)); + dev->stats.tx_packets++; + dev->stats.tx_bytes += skb->len; + dev_consume_skb_any(skb); + return 0; +} + +/** + * cvm_oct_tx_shutdown_dev - free all skb that are currently queued for TX. + * @dev: Device being shutdown + * + */ +void cvm_oct_tx_shutdown_dev(struct net_device *dev) +{ + struct octeon_ethernet *priv = netdev_priv(dev); + unsigned long flags; + int qos; + + for (qos = 0; qos < 16; qos++) { + spin_lock_irqsave(&priv->tx_free_list[qos].lock, flags); + while (skb_queue_len(&priv->tx_free_list[qos])) + dev_kfree_skb_any(__skb_dequeue + (&priv->tx_free_list[qos])); + spin_unlock_irqrestore(&priv->tx_free_list[qos].lock, flags); + } +} + +static void cvm_oct_tx_do_cleanup(unsigned long arg) +{ + int port; + + for (port = 0; port < TOTAL_NUMBER_OF_PORTS; port++) { + if (cvm_oct_device[port]) { + struct net_device *dev = cvm_oct_device[port]; + + cvm_oct_free_tx_skbs(dev); + } + } +} + +static irqreturn_t cvm_oct_tx_cleanup_watchdog(int cpl, void *dev_id) +{ + /* Disable the interrupt. */ + cvmx_write_csr(CVMX_CIU_TIMX(1), 0); + /* Do the work in the tasklet. */ + tasklet_schedule(&cvm_oct_tx_cleanup_tasklet); + return IRQ_HANDLED; +} + +void cvm_oct_tx_initialize(void) +{ + int i; + + /* Disable the interrupt. */ + cvmx_write_csr(CVMX_CIU_TIMX(1), 0); + /* Register an IRQ handler to receive CIU_TIMX(1) interrupts */ + i = request_irq(OCTEON_IRQ_TIMER1, + cvm_oct_tx_cleanup_watchdog, 0, + "Ethernet", cvm_oct_device); + + if (i) + panic("Could not acquire Ethernet IRQ %d\n", OCTEON_IRQ_TIMER1); +} + +void cvm_oct_tx_shutdown(void) +{ + /* Free the interrupt handler */ + free_irq(OCTEON_IRQ_TIMER1, cvm_oct_device); +} diff --git a/drivers/staging/octeon/ethernet-tx.h b/drivers/staging/octeon/ethernet-tx.h new file mode 100644 index 000000000..6c524668f --- /dev/null +++ b/drivers/staging/octeon/ethernet-tx.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2007 Cavium Networks + */ + +netdev_tx_t cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev); +netdev_tx_t cvm_oct_xmit_pow(struct sk_buff *skb, struct net_device *dev); +int cvm_oct_transmit_qos(struct net_device *dev, void *work_queue_entry, + int do_free, int qos); +void cvm_oct_tx_initialize(void); +void cvm_oct_tx_shutdown(void); +void cvm_oct_tx_shutdown_dev(struct net_device *dev); diff --git a/drivers/staging/octeon/ethernet-util.h b/drivers/staging/octeon/ethernet-util.h new file mode 100644 index 000000000..2af83a12c --- /dev/null +++ b/drivers/staging/octeon/ethernet-util.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2007 Cavium Networks + */ + +/** + * cvm_oct_get_buffer_ptr - convert packet data address to pointer + * @packet_ptr: Packet data hardware address + * + * Returns Packet buffer pointer + */ +static inline void *cvm_oct_get_buffer_ptr(union cvmx_buf_ptr packet_ptr) +{ + return cvmx_phys_to_ptr(((packet_ptr.s.addr >> 7) - packet_ptr.s.back) + << 7); +} + +/** + * INTERFACE - convert IPD port to logical interface + * @ipd_port: Port to check + * + * Returns Logical interface + */ +static inline int INTERFACE(int ipd_port) +{ + int interface; + + if (ipd_port == CVMX_PIP_NUM_INPUT_PORTS) + return 10; + interface = cvmx_helper_get_interface_num(ipd_port); + if (interface >= 0) + return interface; + panic("Illegal ipd_port %d passed to %s\n", ipd_port, __func__); +} + +/** + * INDEX - convert IPD/PKO port number to the port's interface index + * @ipd_port: Port to check + * + * Returns Index into interface port list + */ +static inline int INDEX(int ipd_port) +{ + return cvmx_helper_get_interface_index_num(ipd_port); +} diff --git a/drivers/staging/octeon/ethernet.c b/drivers/staging/octeon/ethernet.c new file mode 100644 index 000000000..f66273913 --- /dev/null +++ b/drivers/staging/octeon/ethernet.c @@ -0,0 +1,993 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2007 Cavium Networks + */ + +#include <linux/platform_device.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/phy.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/of_mdio.h> +#include <linux/of_net.h> +#include <linux/if_ether.h> +#include <linux/if_vlan.h> + +#include <net/dst.h> + +#include "octeon-ethernet.h" +#include "ethernet-defines.h" +#include "ethernet-mem.h" +#include "ethernet-rx.h" +#include "ethernet-tx.h" +#include "ethernet-mdio.h" +#include "ethernet-util.h" + +#define OCTEON_MAX_MTU 65392 + +static int num_packet_buffers = 1024; +module_param(num_packet_buffers, int, 0444); +MODULE_PARM_DESC(num_packet_buffers, "\n" + "\tNumber of packet buffers to allocate and store in the\n" + "\tFPA. By default, 1024 packet buffers are used.\n"); + +static int pow_receive_group = 15; +module_param(pow_receive_group, int, 0444); +MODULE_PARM_DESC(pow_receive_group, "\n" + "\tPOW group to receive packets from. All ethernet hardware\n" + "\twill be configured to send incoming packets to this POW\n" + "\tgroup. Also any other software can submit packets to this\n" + "\tgroup for the kernel to process."); + +static int receive_group_order; +module_param(receive_group_order, int, 0444); +MODULE_PARM_DESC(receive_group_order, "\n" + "\tOrder (0..4) of receive groups to take into use. Ethernet hardware\n" + "\twill be configured to send incoming packets to multiple POW\n" + "\tgroups. pow_receive_group parameter is ignored when multiple\n" + "\tgroups are taken into use and groups are allocated starting\n" + "\tfrom 0. By default, a single group is used.\n"); + +int pow_send_group = -1; +module_param(pow_send_group, int, 0644); +MODULE_PARM_DESC(pow_send_group, "\n" + "\tPOW group to send packets to other software on. This\n" + "\tcontrols the creation of the virtual device pow0.\n" + "\talways_use_pow also depends on this value."); + +int always_use_pow; +module_param(always_use_pow, int, 0444); +MODULE_PARM_DESC(always_use_pow, "\n" + "\tWhen set, always send to the pow group. This will cause\n" + "\tpackets sent to real ethernet devices to be sent to the\n" + "\tPOW group instead of the hardware. Unless some other\n" + "\tapplication changes the config, packets will still be\n" + "\treceived from the low level hardware. Use this option\n" + "\tto allow a CVMX app to intercept all packets from the\n" + "\tlinux kernel. You must specify pow_send_group along with\n" + "\tthis option."); + +char pow_send_list[128] = ""; +module_param_string(pow_send_list, pow_send_list, sizeof(pow_send_list), 0444); +MODULE_PARM_DESC(pow_send_list, "\n" + "\tComma separated list of ethernet devices that should use the\n" + "\tPOW for transmit instead of the actual ethernet hardware. This\n" + "\tis a per port version of always_use_pow. always_use_pow takes\n" + "\tprecedence over this list. For example, setting this to\n" + "\t\"eth2,spi3,spi7\" would cause these three devices to transmit\n" + "\tusing the pow_send_group."); + +int rx_napi_weight = 32; +module_param(rx_napi_weight, int, 0444); +MODULE_PARM_DESC(rx_napi_weight, "The NAPI WEIGHT parameter."); + +/* Mask indicating which receive groups are in use. */ +int pow_receive_groups; + +/* + * cvm_oct_poll_queue_stopping - flag to indicate polling should stop. + * + * Set to one right before cvm_oct_poll_queue is destroyed. + */ +atomic_t cvm_oct_poll_queue_stopping = ATOMIC_INIT(0); + +/* + * Array of every ethernet device owned by this driver indexed by + * the ipd input port number. + */ +struct net_device *cvm_oct_device[TOTAL_NUMBER_OF_PORTS]; + +u64 cvm_oct_tx_poll_interval; + +static void cvm_oct_rx_refill_worker(struct work_struct *work); +static DECLARE_DELAYED_WORK(cvm_oct_rx_refill_work, cvm_oct_rx_refill_worker); + +static void cvm_oct_rx_refill_worker(struct work_struct *work) +{ + /* + * FPA 0 may have been drained, try to refill it if we need + * more than num_packet_buffers / 2, otherwise normal receive + * processing will refill it. If it were drained, no packets + * could be received so cvm_oct_napi_poll would never be + * invoked to do the refill. + */ + cvm_oct_rx_refill_pool(num_packet_buffers / 2); + + if (!atomic_read(&cvm_oct_poll_queue_stopping)) + schedule_delayed_work(&cvm_oct_rx_refill_work, HZ); +} + +static void cvm_oct_periodic_worker(struct work_struct *work) +{ + struct octeon_ethernet *priv = container_of(work, + struct octeon_ethernet, + port_periodic_work.work); + + if (priv->poll) + priv->poll(cvm_oct_device[priv->port]); + + cvm_oct_device[priv->port]->netdev_ops->ndo_get_stats + (cvm_oct_device[priv->port]); + + if (!atomic_read(&cvm_oct_poll_queue_stopping)) + schedule_delayed_work(&priv->port_periodic_work, HZ); +} + +static void cvm_oct_configure_common_hw(void) +{ + /* Setup the FPA */ + cvmx_fpa_enable(); + cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE, + num_packet_buffers); + cvm_oct_mem_fill_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE, + num_packet_buffers); + if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL) + cvm_oct_mem_fill_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL, + CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 1024); + +#ifdef __LITTLE_ENDIAN + { + union cvmx_ipd_ctl_status ipd_ctl_status; + + ipd_ctl_status.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS); + ipd_ctl_status.s.pkt_lend = 1; + ipd_ctl_status.s.wqe_lend = 1; + cvmx_write_csr(CVMX_IPD_CTL_STATUS, ipd_ctl_status.u64); + } +#endif + + cvmx_helper_setup_red(num_packet_buffers / 4, num_packet_buffers / 8); +} + +/** + * cvm_oct_free_work- Free a work queue entry + * + * @work_queue_entry: Work queue entry to free + * + * Returns Zero on success, Negative on failure. + */ +int cvm_oct_free_work(void *work_queue_entry) +{ + struct cvmx_wqe *work = work_queue_entry; + + int segments = work->word2.s.bufs; + union cvmx_buf_ptr segment_ptr = work->packet_ptr; + + while (segments--) { + union cvmx_buf_ptr next_ptr = *(union cvmx_buf_ptr *) + cvmx_phys_to_ptr(segment_ptr.s.addr - 8); + if (unlikely(!segment_ptr.s.i)) + cvmx_fpa_free(cvm_oct_get_buffer_ptr(segment_ptr), + segment_ptr.s.pool, + CVMX_FPA_PACKET_POOL_SIZE / 128); + segment_ptr = next_ptr; + } + cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, 1); + + return 0; +} +EXPORT_SYMBOL(cvm_oct_free_work); + +/** + * cvm_oct_common_get_stats - get the low level ethernet statistics + * @dev: Device to get the statistics from + * + * Returns Pointer to the statistics + */ +static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev) +{ + cvmx_pip_port_status_t rx_status; + cvmx_pko_port_status_t tx_status; + struct octeon_ethernet *priv = netdev_priv(dev); + + if (priv->port < CVMX_PIP_NUM_INPUT_PORTS) { + if (octeon_is_simulation()) { + /* The simulator doesn't support statistics */ + memset(&rx_status, 0, sizeof(rx_status)); + memset(&tx_status, 0, sizeof(tx_status)); + } else { + cvmx_pip_get_port_status(priv->port, 1, &rx_status); + cvmx_pko_get_port_status(priv->port, 1, &tx_status); + } + + dev->stats.rx_packets += rx_status.inb_packets; + dev->stats.tx_packets += tx_status.packets; + dev->stats.rx_bytes += rx_status.inb_octets; + dev->stats.tx_bytes += tx_status.octets; + dev->stats.multicast += rx_status.multicast_packets; + dev->stats.rx_crc_errors += rx_status.inb_errors; + dev->stats.rx_frame_errors += rx_status.fcs_align_err_packets; + dev->stats.rx_dropped += rx_status.dropped_packets; + } + + return &dev->stats; +} + +/** + * cvm_oct_common_change_mtu - change the link MTU + * @dev: Device to change + * @new_mtu: The new MTU + * + * Returns Zero on success + */ +static int cvm_oct_common_change_mtu(struct net_device *dev, int new_mtu) +{ + struct octeon_ethernet *priv = netdev_priv(dev); + int interface = INTERFACE(priv->port); +#if IS_ENABLED(CONFIG_VLAN_8021Q) + int vlan_bytes = VLAN_HLEN; +#else + int vlan_bytes = 0; +#endif + int mtu_overhead = ETH_HLEN + ETH_FCS_LEN + vlan_bytes; + + dev->mtu = new_mtu; + + if ((interface < 2) && + (cvmx_helper_interface_get_mode(interface) != + CVMX_HELPER_INTERFACE_MODE_SPI)) { + int index = INDEX(priv->port); + /* Add ethernet header and FCS, and VLAN if configured. */ + int max_packet = new_mtu + mtu_overhead; + + if (OCTEON_IS_MODEL(OCTEON_CN3XXX) || + OCTEON_IS_MODEL(OCTEON_CN58XX)) { + /* Signal errors on packets larger than the MTU */ + cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(index, interface), + max_packet); + } else { + /* + * Set the hardware to truncate packets larger + * than the MTU and smaller the 64 bytes. + */ + union cvmx_pip_frm_len_chkx frm_len_chk; + + frm_len_chk.u64 = 0; + frm_len_chk.s.minlen = VLAN_ETH_ZLEN; + frm_len_chk.s.maxlen = max_packet; + cvmx_write_csr(CVMX_PIP_FRM_LEN_CHKX(interface), + frm_len_chk.u64); + } + /* + * Set the hardware to truncate packets larger than + * the MTU. The jabber register must be set to a + * multiple of 8 bytes, so round up. + */ + cvmx_write_csr(CVMX_GMXX_RXX_JABBER(index, interface), + (max_packet + 7) & ~7u); + } + return 0; +} + +/** + * cvm_oct_common_set_multicast_list - set the multicast list + * @dev: Device to work on + */ +static void cvm_oct_common_set_multicast_list(struct net_device *dev) +{ + union cvmx_gmxx_prtx_cfg gmx_cfg; + struct octeon_ethernet *priv = netdev_priv(dev); + int interface = INTERFACE(priv->port); + + if ((interface < 2) && + (cvmx_helper_interface_get_mode(interface) != + CVMX_HELPER_INTERFACE_MODE_SPI)) { + union cvmx_gmxx_rxx_adr_ctl control; + int index = INDEX(priv->port); + + control.u64 = 0; + control.s.bcst = 1; /* Allow broadcast MAC addresses */ + + if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI) || + (dev->flags & IFF_PROMISC)) + /* Force accept multicast packets */ + control.s.mcst = 2; + else + /* Force reject multicast packets */ + control.s.mcst = 1; + + if (dev->flags & IFF_PROMISC) + /* + * Reject matches if promisc. Since CAM is + * shut off, should accept everything. + */ + control.s.cam_mode = 0; + else + /* Filter packets based on the CAM */ + control.s.cam_mode = 1; + + gmx_cfg.u64 = + cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); + cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), + gmx_cfg.u64 & ~1ull); + + cvmx_write_csr(CVMX_GMXX_RXX_ADR_CTL(index, interface), + control.u64); + if (dev->flags & IFF_PROMISC) + cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN + (index, interface), 0); + else + cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN + (index, interface), 1); + + cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), + gmx_cfg.u64); + } +} + +static int cvm_oct_set_mac_filter(struct net_device *dev) +{ + struct octeon_ethernet *priv = netdev_priv(dev); + union cvmx_gmxx_prtx_cfg gmx_cfg; + int interface = INTERFACE(priv->port); + + if ((interface < 2) && + (cvmx_helper_interface_get_mode(interface) != + CVMX_HELPER_INTERFACE_MODE_SPI)) { + int i; + const u8 *ptr = dev->dev_addr; + u64 mac = 0; + int index = INDEX(priv->port); + + for (i = 0; i < 6; i++) + mac = (mac << 8) | (u64)ptr[i]; + + gmx_cfg.u64 = + cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); + cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), + gmx_cfg.u64 & ~1ull); + + cvmx_write_csr(CVMX_GMXX_SMACX(index, interface), mac); + cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM0(index, interface), + ptr[0]); + cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM1(index, interface), + ptr[1]); + cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM2(index, interface), + ptr[2]); + cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM3(index, interface), + ptr[3]); + cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM4(index, interface), + ptr[4]); + cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM5(index, interface), + ptr[5]); + cvm_oct_common_set_multicast_list(dev); + cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), + gmx_cfg.u64); + } + return 0; +} + +/** + * cvm_oct_common_set_mac_address - set the hardware MAC address for a device + * @dev: The device in question. + * @addr: Socket address. + * + * Returns Zero on success + */ +static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr) +{ + int r = eth_mac_addr(dev, addr); + + if (r) + return r; + return cvm_oct_set_mac_filter(dev); +} + +/** + * cvm_oct_common_init - per network device initialization + * @dev: Device to initialize + * + * Returns Zero on success + */ +int cvm_oct_common_init(struct net_device *dev) +{ + struct octeon_ethernet *priv = netdev_priv(dev); + int ret; + + ret = of_get_ethdev_address(priv->of_node, dev); + if (ret) + eth_hw_addr_random(dev); + + /* + * Force the interface to use the POW send if always_use_pow + * was specified or it is in the pow send list. + */ + if ((pow_send_group != -1) && + (always_use_pow || strstr(pow_send_list, dev->name))) + priv->queue = -1; + + if (priv->queue != -1) + dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM; + + /* We do our own locking, Linux doesn't need to */ + dev->features |= NETIF_F_LLTX; + dev->ethtool_ops = &cvm_oct_ethtool_ops; + + cvm_oct_set_mac_filter(dev); + dev_set_mtu(dev, dev->mtu); + + /* + * Zero out stats for port so we won't mistakenly show + * counters from the bootloader. + */ + memset(dev->netdev_ops->ndo_get_stats(dev), 0, + sizeof(struct net_device_stats)); + + if (dev->netdev_ops->ndo_stop) + dev->netdev_ops->ndo_stop(dev); + + return 0; +} + +void cvm_oct_common_uninit(struct net_device *dev) +{ + if (dev->phydev) + phy_disconnect(dev->phydev); +} + +int cvm_oct_common_open(struct net_device *dev, + void (*link_poll)(struct net_device *)) +{ + union cvmx_gmxx_prtx_cfg gmx_cfg; + struct octeon_ethernet *priv = netdev_priv(dev); + int interface = INTERFACE(priv->port); + int index = INDEX(priv->port); + union cvmx_helper_link_info link_info; + int rv; + + rv = cvm_oct_phy_setup_device(dev); + if (rv) + return rv; + + gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); + gmx_cfg.s.en = 1; + if (octeon_has_feature(OCTEON_FEATURE_PKND)) + gmx_cfg.s.pknd = priv->port; + cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64); + + if (octeon_is_simulation()) + return 0; + + if (dev->phydev) { + int r = phy_read_status(dev->phydev); + + if (r == 0 && dev->phydev->link == 0) + netif_carrier_off(dev); + cvm_oct_adjust_link(dev); + } else { + link_info = cvmx_helper_link_get(priv->port); + if (!link_info.s.link_up) + netif_carrier_off(dev); + priv->poll = link_poll; + link_poll(dev); + } + + return 0; +} + +void cvm_oct_link_poll(struct net_device *dev) +{ + struct octeon_ethernet *priv = netdev_priv(dev); + union cvmx_helper_link_info link_info; + + link_info = cvmx_helper_link_get(priv->port); + if (link_info.u64 == priv->link_info) + return; + + if (cvmx_helper_link_set(priv->port, link_info)) + link_info.u64 = priv->link_info; + else + priv->link_info = link_info.u64; + + if (link_info.s.link_up) { + if (!netif_carrier_ok(dev)) + netif_carrier_on(dev); + } else if (netif_carrier_ok(dev)) { + netif_carrier_off(dev); + } + cvm_oct_note_carrier(priv, link_info); +} + +static int cvm_oct_xaui_open(struct net_device *dev) +{ + return cvm_oct_common_open(dev, cvm_oct_link_poll); +} + +static const struct net_device_ops cvm_oct_npi_netdev_ops = { + .ndo_init = cvm_oct_common_init, + .ndo_uninit = cvm_oct_common_uninit, + .ndo_start_xmit = cvm_oct_xmit, + .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, + .ndo_set_mac_address = cvm_oct_common_set_mac_address, + .ndo_eth_ioctl = cvm_oct_ioctl, + .ndo_change_mtu = cvm_oct_common_change_mtu, + .ndo_get_stats = cvm_oct_common_get_stats, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = cvm_oct_poll_controller, +#endif +}; + +static const struct net_device_ops cvm_oct_xaui_netdev_ops = { + .ndo_init = cvm_oct_common_init, + .ndo_uninit = cvm_oct_common_uninit, + .ndo_open = cvm_oct_xaui_open, + .ndo_stop = cvm_oct_common_stop, + .ndo_start_xmit = cvm_oct_xmit, + .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, + .ndo_set_mac_address = cvm_oct_common_set_mac_address, + .ndo_eth_ioctl = cvm_oct_ioctl, + .ndo_change_mtu = cvm_oct_common_change_mtu, + .ndo_get_stats = cvm_oct_common_get_stats, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = cvm_oct_poll_controller, +#endif +}; + +static const struct net_device_ops cvm_oct_sgmii_netdev_ops = { + .ndo_init = cvm_oct_sgmii_init, + .ndo_uninit = cvm_oct_common_uninit, + .ndo_open = cvm_oct_sgmii_open, + .ndo_stop = cvm_oct_common_stop, + .ndo_start_xmit = cvm_oct_xmit, + .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, + .ndo_set_mac_address = cvm_oct_common_set_mac_address, + .ndo_eth_ioctl = cvm_oct_ioctl, + .ndo_change_mtu = cvm_oct_common_change_mtu, + .ndo_get_stats = cvm_oct_common_get_stats, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = cvm_oct_poll_controller, +#endif +}; + +static const struct net_device_ops cvm_oct_spi_netdev_ops = { + .ndo_init = cvm_oct_spi_init, + .ndo_uninit = cvm_oct_spi_uninit, + .ndo_start_xmit = cvm_oct_xmit, + .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, + .ndo_set_mac_address = cvm_oct_common_set_mac_address, + .ndo_eth_ioctl = cvm_oct_ioctl, + .ndo_change_mtu = cvm_oct_common_change_mtu, + .ndo_get_stats = cvm_oct_common_get_stats, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = cvm_oct_poll_controller, +#endif +}; + +static const struct net_device_ops cvm_oct_rgmii_netdev_ops = { + .ndo_init = cvm_oct_common_init, + .ndo_uninit = cvm_oct_common_uninit, + .ndo_open = cvm_oct_rgmii_open, + .ndo_stop = cvm_oct_common_stop, + .ndo_start_xmit = cvm_oct_xmit, + .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, + .ndo_set_mac_address = cvm_oct_common_set_mac_address, + .ndo_eth_ioctl = cvm_oct_ioctl, + .ndo_change_mtu = cvm_oct_common_change_mtu, + .ndo_get_stats = cvm_oct_common_get_stats, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = cvm_oct_poll_controller, +#endif +}; + +static const struct net_device_ops cvm_oct_pow_netdev_ops = { + .ndo_init = cvm_oct_common_init, + .ndo_start_xmit = cvm_oct_xmit_pow, + .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, + .ndo_set_mac_address = cvm_oct_common_set_mac_address, + .ndo_eth_ioctl = cvm_oct_ioctl, + .ndo_change_mtu = cvm_oct_common_change_mtu, + .ndo_get_stats = cvm_oct_common_get_stats, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = cvm_oct_poll_controller, +#endif +}; + +static struct device_node *cvm_oct_of_get_child + (const struct device_node *parent, int reg_val) +{ + struct device_node *node; + const __be32 *addr; + int size; + + for_each_child_of_node(parent, node) { + addr = of_get_property(node, "reg", &size); + if (addr && (be32_to_cpu(*addr) == reg_val)) + break; + } + return node; +} + +static struct device_node *cvm_oct_node_for_port(struct device_node *pip, + int interface, int port) +{ + struct device_node *ni, *np; + + ni = cvm_oct_of_get_child(pip, interface); + if (!ni) + return NULL; + + np = cvm_oct_of_get_child(ni, port); + of_node_put(ni); + + return np; +} + +static void cvm_set_rgmii_delay(struct octeon_ethernet *priv, int iface, + int port) +{ + struct device_node *np = priv->of_node; + u32 delay_value; + bool rx_delay; + bool tx_delay; + + /* By default, both RX/TX delay is enabled in + * __cvmx_helper_rgmii_enable(). + */ + rx_delay = true; + tx_delay = true; + + if (!of_property_read_u32(np, "rx-delay", &delay_value)) { + cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(port, iface), delay_value); + rx_delay = delay_value > 0; + } + if (!of_property_read_u32(np, "tx-delay", &delay_value)) { + cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(port, iface), delay_value); + tx_delay = delay_value > 0; + } + + if (!rx_delay && !tx_delay) + priv->phy_mode = PHY_INTERFACE_MODE_RGMII_ID; + else if (!rx_delay) + priv->phy_mode = PHY_INTERFACE_MODE_RGMII_RXID; + else if (!tx_delay) + priv->phy_mode = PHY_INTERFACE_MODE_RGMII_TXID; + else + priv->phy_mode = PHY_INTERFACE_MODE_RGMII; +} + +static int cvm_oct_probe(struct platform_device *pdev) +{ + int num_interfaces; + int interface; + int fau = FAU_NUM_PACKET_BUFFERS_TO_FREE; + int qos; + struct device_node *pip; + int mtu_overhead = ETH_HLEN + ETH_FCS_LEN; + +#if IS_ENABLED(CONFIG_VLAN_8021Q) + mtu_overhead += VLAN_HLEN; +#endif + + pip = pdev->dev.of_node; + if (!pip) { + pr_err("Error: No 'pip' in /aliases\n"); + return -EINVAL; + } + + cvm_oct_configure_common_hw(); + + cvmx_helper_initialize_packet_io_global(); + + if (receive_group_order) { + if (receive_group_order > 4) + receive_group_order = 4; + pow_receive_groups = (1 << (1 << receive_group_order)) - 1; + } else { + pow_receive_groups = BIT(pow_receive_group); + } + + /* Change the input group for all ports before input is enabled */ + num_interfaces = cvmx_helper_get_number_of_interfaces(); + for (interface = 0; interface < num_interfaces; interface++) { + int num_ports = cvmx_helper_ports_on_interface(interface); + int port; + + for (port = cvmx_helper_get_ipd_port(interface, 0); + port < cvmx_helper_get_ipd_port(interface, num_ports); + port++) { + union cvmx_pip_prt_tagx pip_prt_tagx; + + pip_prt_tagx.u64 = + cvmx_read_csr(CVMX_PIP_PRT_TAGX(port)); + + if (receive_group_order) { + int tag_mask; + + /* We support only 16 groups at the moment, so + * always disable the two additional "hidden" + * tag_mask bits on CN68XX. + */ + if (OCTEON_IS_MODEL(OCTEON_CN68XX)) + pip_prt_tagx.u64 |= 0x3ull << 44; + + tag_mask = ~((1 << receive_group_order) - 1); + pip_prt_tagx.s.grptagbase = 0; + pip_prt_tagx.s.grptagmask = tag_mask; + pip_prt_tagx.s.grptag = 1; + pip_prt_tagx.s.tag_mode = 0; + pip_prt_tagx.s.inc_prt_flag = 1; + pip_prt_tagx.s.ip6_dprt_flag = 1; + pip_prt_tagx.s.ip4_dprt_flag = 1; + pip_prt_tagx.s.ip6_sprt_flag = 1; + pip_prt_tagx.s.ip4_sprt_flag = 1; + pip_prt_tagx.s.ip6_dst_flag = 1; + pip_prt_tagx.s.ip4_dst_flag = 1; + pip_prt_tagx.s.ip6_src_flag = 1; + pip_prt_tagx.s.ip4_src_flag = 1; + pip_prt_tagx.s.grp = 0; + } else { + pip_prt_tagx.s.grptag = 0; + pip_prt_tagx.s.grp = pow_receive_group; + } + + cvmx_write_csr(CVMX_PIP_PRT_TAGX(port), + pip_prt_tagx.u64); + } + } + + cvmx_helper_ipd_and_packet_input_enable(); + + memset(cvm_oct_device, 0, sizeof(cvm_oct_device)); + + /* + * Initialize the FAU used for counting packet buffers that + * need to be freed. + */ + cvmx_fau_atomic_write32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0); + + /* Initialize the FAU used for counting tx SKBs that need to be freed */ + cvmx_fau_atomic_write32(FAU_TOTAL_TX_TO_CLEAN, 0); + + if ((pow_send_group != -1)) { + struct net_device *dev; + + dev = alloc_etherdev(sizeof(struct octeon_ethernet)); + if (dev) { + /* Initialize the device private structure. */ + struct octeon_ethernet *priv = netdev_priv(dev); + + SET_NETDEV_DEV(dev, &pdev->dev); + dev->netdev_ops = &cvm_oct_pow_netdev_ops; + priv->imode = CVMX_HELPER_INTERFACE_MODE_DISABLED; + priv->port = CVMX_PIP_NUM_INPUT_PORTS; + priv->queue = -1; + strscpy(dev->name, "pow%d", sizeof(dev->name)); + for (qos = 0; qos < 16; qos++) + skb_queue_head_init(&priv->tx_free_list[qos]); + dev->min_mtu = VLAN_ETH_ZLEN - mtu_overhead; + dev->max_mtu = OCTEON_MAX_MTU - mtu_overhead; + + if (register_netdev(dev) < 0) { + pr_err("Failed to register ethernet device for POW\n"); + free_netdev(dev); + } else { + cvm_oct_device[CVMX_PIP_NUM_INPUT_PORTS] = dev; + pr_info("%s: POW send group %d, receive group %d\n", + dev->name, pow_send_group, + pow_receive_group); + } + } else { + pr_err("Failed to allocate ethernet device for POW\n"); + } + } + + num_interfaces = cvmx_helper_get_number_of_interfaces(); + for (interface = 0; interface < num_interfaces; interface++) { + cvmx_helper_interface_mode_t imode = + cvmx_helper_interface_get_mode(interface); + int num_ports = cvmx_helper_ports_on_interface(interface); + int port; + int port_index; + + for (port_index = 0, + port = cvmx_helper_get_ipd_port(interface, 0); + port < cvmx_helper_get_ipd_port(interface, num_ports); + port_index++, port++) { + struct octeon_ethernet *priv; + struct net_device *dev = + alloc_etherdev(sizeof(struct octeon_ethernet)); + if (!dev) { + pr_err("Failed to allocate ethernet device for port %d\n", + port); + continue; + } + + /* Initialize the device private structure. */ + SET_NETDEV_DEV(dev, &pdev->dev); + priv = netdev_priv(dev); + priv->netdev = dev; + priv->of_node = cvm_oct_node_for_port(pip, interface, + port_index); + + INIT_DELAYED_WORK(&priv->port_periodic_work, + cvm_oct_periodic_worker); + priv->imode = imode; + priv->port = port; + priv->queue = cvmx_pko_get_base_queue(priv->port); + priv->fau = fau - cvmx_pko_get_num_queues(port) * 4; + priv->phy_mode = PHY_INTERFACE_MODE_NA; + for (qos = 0; qos < 16; qos++) + skb_queue_head_init(&priv->tx_free_list[qos]); + for (qos = 0; qos < cvmx_pko_get_num_queues(port); + qos++) + cvmx_fau_atomic_write32(priv->fau + qos * 4, 0); + dev->min_mtu = VLAN_ETH_ZLEN - mtu_overhead; + dev->max_mtu = OCTEON_MAX_MTU - mtu_overhead; + + switch (priv->imode) { + /* These types don't support ports to IPD/PKO */ + case CVMX_HELPER_INTERFACE_MODE_DISABLED: + case CVMX_HELPER_INTERFACE_MODE_PCIE: + case CVMX_HELPER_INTERFACE_MODE_PICMG: + break; + + case CVMX_HELPER_INTERFACE_MODE_NPI: + dev->netdev_ops = &cvm_oct_npi_netdev_ops; + strscpy(dev->name, "npi%d", sizeof(dev->name)); + break; + + case CVMX_HELPER_INTERFACE_MODE_XAUI: + dev->netdev_ops = &cvm_oct_xaui_netdev_ops; + strscpy(dev->name, "xaui%d", sizeof(dev->name)); + break; + + case CVMX_HELPER_INTERFACE_MODE_LOOP: + dev->netdev_ops = &cvm_oct_npi_netdev_ops; + strscpy(dev->name, "loop%d", sizeof(dev->name)); + break; + + case CVMX_HELPER_INTERFACE_MODE_SGMII: + priv->phy_mode = PHY_INTERFACE_MODE_SGMII; + dev->netdev_ops = &cvm_oct_sgmii_netdev_ops; + strscpy(dev->name, "eth%d", sizeof(dev->name)); + break; + + case CVMX_HELPER_INTERFACE_MODE_SPI: + dev->netdev_ops = &cvm_oct_spi_netdev_ops; + strscpy(dev->name, "spi%d", sizeof(dev->name)); + break; + + case CVMX_HELPER_INTERFACE_MODE_GMII: + priv->phy_mode = PHY_INTERFACE_MODE_GMII; + dev->netdev_ops = &cvm_oct_rgmii_netdev_ops; + strscpy(dev->name, "eth%d", sizeof(dev->name)); + break; + + case CVMX_HELPER_INTERFACE_MODE_RGMII: + dev->netdev_ops = &cvm_oct_rgmii_netdev_ops; + strscpy(dev->name, "eth%d", sizeof(dev->name)); + cvm_set_rgmii_delay(priv, interface, + port_index); + break; + } + + if (priv->of_node && of_phy_is_fixed_link(priv->of_node)) { + if (of_phy_register_fixed_link(priv->of_node)) { + netdev_err(dev, "Failed to register fixed link for interface %d, port %d\n", + interface, priv->port); + dev->netdev_ops = NULL; + } + } + + if (!dev->netdev_ops) { + free_netdev(dev); + } else if (register_netdev(dev) < 0) { + pr_err("Failed to register ethernet device for interface %d, port %d\n", + interface, priv->port); + free_netdev(dev); + } else { + cvm_oct_device[priv->port] = dev; + fau -= + cvmx_pko_get_num_queues(priv->port) * + sizeof(u32); + schedule_delayed_work(&priv->port_periodic_work, + HZ); + } + } + } + + cvm_oct_tx_initialize(); + cvm_oct_rx_initialize(); + + /* + * 150 uS: about 10 1500-byte packets at 1GE. + */ + cvm_oct_tx_poll_interval = 150 * (octeon_get_clock_rate() / 1000000); + + schedule_delayed_work(&cvm_oct_rx_refill_work, HZ); + + return 0; +} + +static int cvm_oct_remove(struct platform_device *pdev) +{ + int port; + + cvmx_ipd_disable(); + + atomic_inc_return(&cvm_oct_poll_queue_stopping); + cancel_delayed_work_sync(&cvm_oct_rx_refill_work); + + cvm_oct_rx_shutdown(); + cvm_oct_tx_shutdown(); + + cvmx_pko_disable(); + + /* Free the ethernet devices */ + for (port = 0; port < TOTAL_NUMBER_OF_PORTS; port++) { + if (cvm_oct_device[port]) { + struct net_device *dev = cvm_oct_device[port]; + struct octeon_ethernet *priv = netdev_priv(dev); + + cancel_delayed_work_sync(&priv->port_periodic_work); + + cvm_oct_tx_shutdown_dev(dev); + unregister_netdev(dev); + free_netdev(dev); + cvm_oct_device[port] = NULL; + } + } + + cvmx_pko_shutdown(); + + cvmx_ipd_free_ptr(); + + /* Free the HW pools */ + cvm_oct_mem_empty_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE, + num_packet_buffers); + cvm_oct_mem_empty_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE, + num_packet_buffers); + if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL) + cvm_oct_mem_empty_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL, + CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 128); + return 0; +} + +static const struct of_device_id cvm_oct_match[] = { + { + .compatible = "cavium,octeon-3860-pip", + }, + {}, +}; +MODULE_DEVICE_TABLE(of, cvm_oct_match); + +static struct platform_driver cvm_oct_driver = { + .probe = cvm_oct_probe, + .remove = cvm_oct_remove, + .driver = { + .name = KBUILD_MODNAME, + .of_match_table = cvm_oct_match, + }, +}; + +module_platform_driver(cvm_oct_driver); + +MODULE_SOFTDEP("pre: mdio-cavium"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Cavium Networks <support@caviumnetworks.com>"); +MODULE_DESCRIPTION("Cavium Networks Octeon ethernet driver."); diff --git a/drivers/staging/octeon/octeon-ethernet.h b/drivers/staging/octeon/octeon-ethernet.h new file mode 100644 index 000000000..a61407057 --- /dev/null +++ b/drivers/staging/octeon/octeon-ethernet.h @@ -0,0 +1,107 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This file is based on code from OCTEON SDK by Cavium Networks. + * + * Copyright (c) 2003-2010 Cavium Networks + */ + +/* + * External interface for the Cavium Octeon ethernet driver. + */ +#ifndef OCTEON_ETHERNET_H +#define OCTEON_ETHERNET_H + +#include <linux/of.h> +#include <linux/phy.h> + +#ifdef CONFIG_CAVIUM_OCTEON_SOC + +#include <asm/octeon/octeon.h> + +#include <asm/octeon/cvmx-asxx-defs.h> +#include <asm/octeon/cvmx-config.h> +#include <asm/octeon/cvmx-fau.h> +#include <asm/octeon/cvmx-gmxx-defs.h> +#include <asm/octeon/cvmx-helper.h> +#include <asm/octeon/cvmx-helper-util.h> +#include <asm/octeon/cvmx-ipd.h> +#include <asm/octeon/cvmx-ipd-defs.h> +#include <asm/octeon/cvmx-npi-defs.h> +#include <asm/octeon/cvmx-pip.h> +#include <asm/octeon/cvmx-pko.h> +#include <asm/octeon/cvmx-pow.h> +#include <asm/octeon/cvmx-scratch.h> +#include <asm/octeon/cvmx-spi.h> +#include <asm/octeon/cvmx-spxx-defs.h> +#include <asm/octeon/cvmx-stxx-defs.h> +#include <asm/octeon/cvmx-wqe.h> + +#else + +#include "octeon-stubs.h" + +#endif + +/** + * This is the definition of the Ethernet driver's private + * driver state stored in netdev_priv(dev). + */ +struct octeon_ethernet { + /* PKO hardware output port */ + int port; + /* PKO hardware queue for the port */ + int queue; + /* Hardware fetch and add to count outstanding tx buffers */ + int fau; + /* My netdev. */ + struct net_device *netdev; + /* + * Type of port. This is one of the enums in + * cvmx_helper_interface_mode_t + */ + int imode; + /* PHY mode */ + phy_interface_t phy_mode; + /* List of outstanding tx buffers per queue */ + struct sk_buff_head tx_free_list[16]; + unsigned int last_speed; + unsigned int last_link; + /* Last negotiated link state */ + u64 link_info; + /* Called periodically to check link status */ + void (*poll)(struct net_device *dev); + struct delayed_work port_periodic_work; + struct device_node *of_node; +}; + +int cvm_oct_free_work(void *work_queue_entry); + +int cvm_oct_rgmii_open(struct net_device *dev); + +int cvm_oct_sgmii_init(struct net_device *dev); +int cvm_oct_sgmii_open(struct net_device *dev); + +int cvm_oct_spi_init(struct net_device *dev); +void cvm_oct_spi_uninit(struct net_device *dev); + +int cvm_oct_common_init(struct net_device *dev); +void cvm_oct_common_uninit(struct net_device *dev); +void cvm_oct_adjust_link(struct net_device *dev); +int cvm_oct_common_stop(struct net_device *dev); +int cvm_oct_common_open(struct net_device *dev, + void (*link_poll)(struct net_device *)); +void cvm_oct_note_carrier(struct octeon_ethernet *priv, + union cvmx_helper_link_info li); +void cvm_oct_link_poll(struct net_device *dev); + +extern int always_use_pow; +extern int pow_send_group; +extern int pow_receive_groups; +extern char pow_send_list[]; +extern struct net_device *cvm_oct_device[]; +extern atomic_t cvm_oct_poll_queue_stopping; +extern u64 cvm_oct_tx_poll_interval; + +extern int rx_napi_weight; + +#endif diff --git a/drivers/staging/octeon/octeon-stubs.h b/drivers/staging/octeon/octeon-stubs.h new file mode 100644 index 000000000..3f8e5713b --- /dev/null +++ b/drivers/staging/octeon/octeon-stubs.h @@ -0,0 +1,1435 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#define CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE 512 + +#ifndef XKPHYS_TO_PHYS +# define XKPHYS_TO_PHYS(p) (p) +#endif + +#define OCTEON_IRQ_WORKQ0 0 +#define OCTEON_IRQ_RML 0 +#define OCTEON_IRQ_TIMER1 0 +#define OCTEON_IS_MODEL(x) 0 +#define octeon_has_feature(x) 0 +#define octeon_get_clock_rate() 0 + +#define CVMX_SYNCIOBDMA do { } while (0) + +#define CVMX_HELPER_INPUT_TAG_TYPE 0 +#define CVMX_HELPER_FIRST_MBUFF_SKIP 7 +#define CVMX_FAU_REG_END (2048) +#define CVMX_FPA_OUTPUT_BUFFER_POOL (2) +#define CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE 16 +#define CVMX_FPA_PACKET_POOL (0) +#define CVMX_FPA_PACKET_POOL_SIZE 16 +#define CVMX_FPA_WQE_POOL (1) +#define CVMX_FPA_WQE_POOL_SIZE 16 +#define CVMX_GMXX_RXX_ADR_CAM_EN(a, b) ((a) + (b)) +#define CVMX_GMXX_RXX_ADR_CTL(a, b) ((a) + (b)) +#define CVMX_GMXX_PRTX_CFG(a, b) ((a) + (b)) +#define CVMX_GMXX_RXX_FRM_MAX(a, b) ((a) + (b)) +#define CVMX_GMXX_RXX_JABBER(a, b) ((a) + (b)) +#define CVMX_IPD_CTL_STATUS 0 +#define CVMX_PIP_FRM_LEN_CHKX(a) (a) +#define CVMX_PIP_NUM_INPUT_PORTS 1 +#define CVMX_SCR_SCRATCH 0 +#define CVMX_PKO_QUEUES_PER_PORT_INTERFACE0 2 +#define CVMX_PKO_QUEUES_PER_PORT_INTERFACE1 2 +#define CVMX_IPD_SUB_PORT_FCS 0 +#define CVMX_SSO_WQ_IQ_DIS 0 +#define CVMX_SSO_WQ_INT 0 +#define CVMX_POW_WQ_INT 0 +#define CVMX_SSO_WQ_INT_PC 0 +#define CVMX_NPI_RSL_INT_BLOCKS 0 +#define CVMX_POW_WQ_INT_PC 0 + +union cvmx_pip_wqe_word2 { + uint64_t u64; + struct { + uint64_t bufs:8; + uint64_t ip_offset:8; + uint64_t vlan_valid:1; + uint64_t vlan_stacked:1; + uint64_t unassigned:1; + uint64_t vlan_cfi:1; + uint64_t vlan_id:12; + uint64_t pr:4; + uint64_t unassigned2:8; + uint64_t dec_ipcomp:1; + uint64_t tcp_or_udp:1; + uint64_t dec_ipsec:1; + uint64_t is_v6:1; + uint64_t software:1; + uint64_t L4_error:1; + uint64_t is_frag:1; + uint64_t IP_exc:1; + uint64_t is_bcast:1; + uint64_t is_mcast:1; + uint64_t not_IP:1; + uint64_t rcv_error:1; + uint64_t err_code:8; + } s; + struct { + uint64_t bufs:8; + uint64_t ip_offset:8; + uint64_t vlan_valid:1; + uint64_t vlan_stacked:1; + uint64_t unassigned:1; + uint64_t vlan_cfi:1; + uint64_t vlan_id:12; + uint64_t port:12; + uint64_t dec_ipcomp:1; + uint64_t tcp_or_udp:1; + uint64_t dec_ipsec:1; + uint64_t is_v6:1; + uint64_t software:1; + uint64_t L4_error:1; + uint64_t is_frag:1; + uint64_t IP_exc:1; + uint64_t is_bcast:1; + uint64_t is_mcast:1; + uint64_t not_IP:1; + uint64_t rcv_error:1; + uint64_t err_code:8; + } s_cn68xx; + + struct { + uint64_t unused1:16; + uint64_t vlan:16; + uint64_t unused2:32; + } svlan; + struct { + uint64_t bufs:8; + uint64_t unused:8; + uint64_t vlan_valid:1; + uint64_t vlan_stacked:1; + uint64_t unassigned:1; + uint64_t vlan_cfi:1; + uint64_t vlan_id:12; + uint64_t pr:4; + uint64_t unassigned2:12; + uint64_t software:1; + uint64_t unassigned3:1; + uint64_t is_rarp:1; + uint64_t is_arp:1; + uint64_t is_bcast:1; + uint64_t is_mcast:1; + uint64_t not_IP:1; + uint64_t rcv_error:1; + uint64_t err_code:8; + } snoip; + +}; + +union cvmx_pip_wqe_word0 { + struct { + uint64_t next_ptr:40; + uint8_t unused; + __wsum hw_chksum; + } cn38xx; + struct { + uint64_t pknd:6; /* 0..5 */ + uint64_t unused2:2; /* 6..7 */ + uint64_t bpid:6; /* 8..13 */ + uint64_t unused1:18; /* 14..31 */ + uint64_t l2ptr:8; /* 32..39 */ + uint64_t l3ptr:8; /* 40..47 */ + uint64_t unused0:8; /* 48..55 */ + uint64_t l4ptr:8; /* 56..63 */ + } cn68xx; +}; + +union cvmx_wqe_word0 { + uint64_t u64; + union cvmx_pip_wqe_word0 pip; +}; + +union cvmx_wqe_word1 { + uint64_t u64; + struct { + uint64_t tag:32; + uint64_t tag_type:2; + uint64_t varies:14; + uint64_t len:16; + }; + struct { + uint64_t tag:32; + uint64_t tag_type:2; + uint64_t zero_2:3; + uint64_t grp:6; + uint64_t zero_1:1; + uint64_t qos:3; + uint64_t zero_0:1; + uint64_t len:16; + } cn68xx; + struct { + uint64_t tag:32; + uint64_t tag_type:2; + uint64_t zero_2:1; + uint64_t grp:4; + uint64_t qos:3; + uint64_t ipprt:6; + uint64_t len:16; + } cn38xx; +}; + +union cvmx_buf_ptr { + void *ptr; + uint64_t u64; + struct { + uint64_t i:1; + uint64_t back:4; + uint64_t pool:3; + uint64_t size:16; + uint64_t addr:40; + } s; +}; + +struct cvmx_wqe { + union cvmx_wqe_word0 word0; + union cvmx_wqe_word1 word1; + union cvmx_pip_wqe_word2 word2; + union cvmx_buf_ptr packet_ptr; + uint8_t packet_data[96]; +}; + +union cvmx_helper_link_info { + uint64_t u64; + struct { + uint64_t reserved_20_63:44; + uint64_t link_up:1; /**< Is the physical link up? */ + uint64_t full_duplex:1; /**< 1 if the link is full duplex */ + uint64_t speed:18; /**< Speed of the link in Mbps */ + } s; +}; + +enum cvmx_fau_reg_32 { + CVMX_FAU_REG_32_START = 0, +}; + +enum cvmx_fau_op_size { + CVMX_FAU_OP_SIZE_8 = 0, + CVMX_FAU_OP_SIZE_16 = 1, + CVMX_FAU_OP_SIZE_32 = 2, + CVMX_FAU_OP_SIZE_64 = 3 +}; + +typedef enum { + CVMX_SPI_MODE_UNKNOWN = 0, + CVMX_SPI_MODE_TX_HALFPLEX = 1, + CVMX_SPI_MODE_RX_HALFPLEX = 2, + CVMX_SPI_MODE_DUPLEX = 3 +} cvmx_spi_mode_t; + +typedef enum { + CVMX_HELPER_INTERFACE_MODE_DISABLED, + CVMX_HELPER_INTERFACE_MODE_RGMII, + CVMX_HELPER_INTERFACE_MODE_GMII, + CVMX_HELPER_INTERFACE_MODE_SPI, + CVMX_HELPER_INTERFACE_MODE_PCIE, + CVMX_HELPER_INTERFACE_MODE_XAUI, + CVMX_HELPER_INTERFACE_MODE_SGMII, + CVMX_HELPER_INTERFACE_MODE_PICMG, + CVMX_HELPER_INTERFACE_MODE_NPI, + CVMX_HELPER_INTERFACE_MODE_LOOP, +} cvmx_helper_interface_mode_t; + +typedef enum { + CVMX_POW_WAIT = 1, + CVMX_POW_NO_WAIT = 0, +} cvmx_pow_wait_t; + +typedef enum { + CVMX_PKO_LOCK_NONE = 0, + CVMX_PKO_LOCK_ATOMIC_TAG = 1, + CVMX_PKO_LOCK_CMD_QUEUE = 2, +} cvmx_pko_lock_t; + +typedef enum { + CVMX_PKO_SUCCESS, + CVMX_PKO_INVALID_PORT, + CVMX_PKO_INVALID_QUEUE, + CVMX_PKO_INVALID_PRIORITY, + CVMX_PKO_NO_MEMORY, + CVMX_PKO_PORT_ALREADY_SETUP, + CVMX_PKO_CMD_QUEUE_INIT_ERROR +} cvmx_pko_status_t; + +enum cvmx_pow_tag_type { + CVMX_POW_TAG_TYPE_ORDERED = 0L, + CVMX_POW_TAG_TYPE_ATOMIC = 1L, + CVMX_POW_TAG_TYPE_NULL = 2L, + CVMX_POW_TAG_TYPE_NULL_NULL = 3L +}; + +union cvmx_ipd_ctl_status { + uint64_t u64; + struct cvmx_ipd_ctl_status_s { + uint64_t reserved_18_63:46; + uint64_t use_sop:1; + uint64_t rst_done:1; + uint64_t clken:1; + uint64_t no_wptr:1; + uint64_t pq_apkt:1; + uint64_t pq_nabuf:1; + uint64_t ipd_full:1; + uint64_t pkt_off:1; + uint64_t len_m8:1; + uint64_t reset:1; + uint64_t addpkt:1; + uint64_t naddbuf:1; + uint64_t pkt_lend:1; + uint64_t wqe_lend:1; + uint64_t pbp_en:1; + uint64_t opc_mode:2; + uint64_t ipd_en:1; + } s; + struct cvmx_ipd_ctl_status_cn30xx { + uint64_t reserved_10_63:54; + uint64_t len_m8:1; + uint64_t reset:1; + uint64_t addpkt:1; + uint64_t naddbuf:1; + uint64_t pkt_lend:1; + uint64_t wqe_lend:1; + uint64_t pbp_en:1; + uint64_t opc_mode:2; + uint64_t ipd_en:1; + } cn30xx; + struct cvmx_ipd_ctl_status_cn38xxp2 { + uint64_t reserved_9_63:55; + uint64_t reset:1; + uint64_t addpkt:1; + uint64_t naddbuf:1; + uint64_t pkt_lend:1; + uint64_t wqe_lend:1; + uint64_t pbp_en:1; + uint64_t opc_mode:2; + uint64_t ipd_en:1; + } cn38xxp2; + struct cvmx_ipd_ctl_status_cn50xx { + uint64_t reserved_15_63:49; + uint64_t no_wptr:1; + uint64_t pq_apkt:1; + uint64_t pq_nabuf:1; + uint64_t ipd_full:1; + uint64_t pkt_off:1; + uint64_t len_m8:1; + uint64_t reset:1; + uint64_t addpkt:1; + uint64_t naddbuf:1; + uint64_t pkt_lend:1; + uint64_t wqe_lend:1; + uint64_t pbp_en:1; + uint64_t opc_mode:2; + uint64_t ipd_en:1; + } cn50xx; + struct cvmx_ipd_ctl_status_cn58xx { + uint64_t reserved_12_63:52; + uint64_t ipd_full:1; + uint64_t pkt_off:1; + uint64_t len_m8:1; + uint64_t reset:1; + uint64_t addpkt:1; + uint64_t naddbuf:1; + uint64_t pkt_lend:1; + uint64_t wqe_lend:1; + uint64_t pbp_en:1; + uint64_t opc_mode:2; + uint64_t ipd_en:1; + } cn58xx; + struct cvmx_ipd_ctl_status_cn63xxp1 { + uint64_t reserved_16_63:48; + uint64_t clken:1; + uint64_t no_wptr:1; + uint64_t pq_apkt:1; + uint64_t pq_nabuf:1; + uint64_t ipd_full:1; + uint64_t pkt_off:1; + uint64_t len_m8:1; + uint64_t reset:1; + uint64_t addpkt:1; + uint64_t naddbuf:1; + uint64_t pkt_lend:1; + uint64_t wqe_lend:1; + uint64_t pbp_en:1; + uint64_t opc_mode:2; + uint64_t ipd_en:1; + } cn63xxp1; +}; + +union cvmx_ipd_sub_port_fcs { + uint64_t u64; + struct cvmx_ipd_sub_port_fcs_s { + uint64_t port_bit:32; + uint64_t reserved_32_35:4; + uint64_t port_bit2:4; + uint64_t reserved_40_63:24; + } s; + struct cvmx_ipd_sub_port_fcs_cn30xx { + uint64_t port_bit:3; + uint64_t reserved_3_63:61; + } cn30xx; + struct cvmx_ipd_sub_port_fcs_cn38xx { + uint64_t port_bit:32; + uint64_t reserved_32_63:32; + } cn38xx; +}; + +union cvmx_ipd_sub_port_qos_cnt { + uint64_t u64; + struct cvmx_ipd_sub_port_qos_cnt_s { + uint64_t cnt:32; + uint64_t port_qos:9; + uint64_t reserved_41_63:23; + } s; +}; + +typedef struct { + uint32_t dropped_octets; + uint32_t dropped_packets; + uint32_t pci_raw_packets; + uint32_t octets; + uint32_t packets; + uint32_t multicast_packets; + uint32_t broadcast_packets; + uint32_t len_64_packets; + uint32_t len_65_127_packets; + uint32_t len_128_255_packets; + uint32_t len_256_511_packets; + uint32_t len_512_1023_packets; + uint32_t len_1024_1518_packets; + uint32_t len_1519_max_packets; + uint32_t fcs_align_err_packets; + uint32_t runt_packets; + uint32_t runt_crc_packets; + uint32_t oversize_packets; + uint32_t oversize_crc_packets; + uint32_t inb_packets; + uint64_t inb_octets; + uint16_t inb_errors; +} cvmx_pip_port_status_t; + +typedef struct { + uint32_t packets; + uint64_t octets; + uint64_t doorbell; +} cvmx_pko_port_status_t; + +union cvmx_pip_frm_len_chkx { + uint64_t u64; + struct cvmx_pip_frm_len_chkx_s { + uint64_t reserved_32_63:32; + uint64_t maxlen:16; + uint64_t minlen:16; + } s; +}; + +union cvmx_gmxx_rxx_frm_ctl { + uint64_t u64; + struct cvmx_gmxx_rxx_frm_ctl_s { + uint64_t pre_chk:1; + uint64_t pre_strp:1; + uint64_t ctl_drp:1; + uint64_t ctl_bck:1; + uint64_t ctl_mcst:1; + uint64_t ctl_smac:1; + uint64_t pre_free:1; + uint64_t vlan_len:1; + uint64_t pad_len:1; + uint64_t pre_align:1; + uint64_t null_dis:1; + uint64_t reserved_11_11:1; + uint64_t ptp_mode:1; + uint64_t reserved_13_63:51; + } s; + struct cvmx_gmxx_rxx_frm_ctl_cn30xx { + uint64_t pre_chk:1; + uint64_t pre_strp:1; + uint64_t ctl_drp:1; + uint64_t ctl_bck:1; + uint64_t ctl_mcst:1; + uint64_t ctl_smac:1; + uint64_t pre_free:1; + uint64_t vlan_len:1; + uint64_t pad_len:1; + uint64_t reserved_9_63:55; + } cn30xx; + struct cvmx_gmxx_rxx_frm_ctl_cn31xx { + uint64_t pre_chk:1; + uint64_t pre_strp:1; + uint64_t ctl_drp:1; + uint64_t ctl_bck:1; + uint64_t ctl_mcst:1; + uint64_t ctl_smac:1; + uint64_t pre_free:1; + uint64_t vlan_len:1; + uint64_t reserved_8_63:56; + } cn31xx; + struct cvmx_gmxx_rxx_frm_ctl_cn50xx { + uint64_t pre_chk:1; + uint64_t pre_strp:1; + uint64_t ctl_drp:1; + uint64_t ctl_bck:1; + uint64_t ctl_mcst:1; + uint64_t ctl_smac:1; + uint64_t pre_free:1; + uint64_t reserved_7_8:2; + uint64_t pre_align:1; + uint64_t null_dis:1; + uint64_t reserved_11_63:53; + } cn50xx; + struct cvmx_gmxx_rxx_frm_ctl_cn56xxp1 { + uint64_t pre_chk:1; + uint64_t pre_strp:1; + uint64_t ctl_drp:1; + uint64_t ctl_bck:1; + uint64_t ctl_mcst:1; + uint64_t ctl_smac:1; + uint64_t pre_free:1; + uint64_t reserved_7_8:2; + uint64_t pre_align:1; + uint64_t reserved_10_63:54; + } cn56xxp1; + struct cvmx_gmxx_rxx_frm_ctl_cn58xx { + uint64_t pre_chk:1; + uint64_t pre_strp:1; + uint64_t ctl_drp:1; + uint64_t ctl_bck:1; + uint64_t ctl_mcst:1; + uint64_t ctl_smac:1; + uint64_t pre_free:1; + uint64_t vlan_len:1; + uint64_t pad_len:1; + uint64_t pre_align:1; + uint64_t null_dis:1; + uint64_t reserved_11_63:53; + } cn58xx; + struct cvmx_gmxx_rxx_frm_ctl_cn61xx { + uint64_t pre_chk:1; + uint64_t pre_strp:1; + uint64_t ctl_drp:1; + uint64_t ctl_bck:1; + uint64_t ctl_mcst:1; + uint64_t ctl_smac:1; + uint64_t pre_free:1; + uint64_t reserved_7_8:2; + uint64_t pre_align:1; + uint64_t null_dis:1; + uint64_t reserved_11_11:1; + uint64_t ptp_mode:1; + uint64_t reserved_13_63:51; + } cn61xx; +}; + +union cvmx_gmxx_rxx_int_reg { + uint64_t u64; + struct cvmx_gmxx_rxx_int_reg_s { + uint64_t minerr:1; + uint64_t carext:1; + uint64_t maxerr:1; + uint64_t jabber:1; + uint64_t fcserr:1; + uint64_t alnerr:1; + uint64_t lenerr:1; + uint64_t rcverr:1; + uint64_t skperr:1; + uint64_t niberr:1; + uint64_t ovrerr:1; + uint64_t pcterr:1; + uint64_t rsverr:1; + uint64_t falerr:1; + uint64_t coldet:1; + uint64_t ifgerr:1; + uint64_t phy_link:1; + uint64_t phy_spd:1; + uint64_t phy_dupx:1; + uint64_t pause_drp:1; + uint64_t loc_fault:1; + uint64_t rem_fault:1; + uint64_t bad_seq:1; + uint64_t bad_term:1; + uint64_t unsop:1; + uint64_t uneop:1; + uint64_t undat:1; + uint64_t hg2fld:1; + uint64_t hg2cc:1; + uint64_t reserved_29_63:35; + } s; + struct cvmx_gmxx_rxx_int_reg_cn30xx { + uint64_t minerr:1; + uint64_t carext:1; + uint64_t maxerr:1; + uint64_t jabber:1; + uint64_t fcserr:1; + uint64_t alnerr:1; + uint64_t lenerr:1; + uint64_t rcverr:1; + uint64_t skperr:1; + uint64_t niberr:1; + uint64_t ovrerr:1; + uint64_t pcterr:1; + uint64_t rsverr:1; + uint64_t falerr:1; + uint64_t coldet:1; + uint64_t ifgerr:1; + uint64_t phy_link:1; + uint64_t phy_spd:1; + uint64_t phy_dupx:1; + uint64_t reserved_19_63:45; + } cn30xx; + struct cvmx_gmxx_rxx_int_reg_cn50xx { + uint64_t reserved_0_0:1; + uint64_t carext:1; + uint64_t reserved_2_2:1; + uint64_t jabber:1; + uint64_t fcserr:1; + uint64_t alnerr:1; + uint64_t reserved_6_6:1; + uint64_t rcverr:1; + uint64_t skperr:1; + uint64_t niberr:1; + uint64_t ovrerr:1; + uint64_t pcterr:1; + uint64_t rsverr:1; + uint64_t falerr:1; + uint64_t coldet:1; + uint64_t ifgerr:1; + uint64_t phy_link:1; + uint64_t phy_spd:1; + uint64_t phy_dupx:1; + uint64_t pause_drp:1; + uint64_t reserved_20_63:44; + } cn50xx; + struct cvmx_gmxx_rxx_int_reg_cn52xx { + uint64_t reserved_0_0:1; + uint64_t carext:1; + uint64_t reserved_2_2:1; + uint64_t jabber:1; + uint64_t fcserr:1; + uint64_t reserved_5_6:2; + uint64_t rcverr:1; + uint64_t skperr:1; + uint64_t reserved_9_9:1; + uint64_t ovrerr:1; + uint64_t pcterr:1; + uint64_t rsverr:1; + uint64_t falerr:1; + uint64_t coldet:1; + uint64_t ifgerr:1; + uint64_t reserved_16_18:3; + uint64_t pause_drp:1; + uint64_t loc_fault:1; + uint64_t rem_fault:1; + uint64_t bad_seq:1; + uint64_t bad_term:1; + uint64_t unsop:1; + uint64_t uneop:1; + uint64_t undat:1; + uint64_t hg2fld:1; + uint64_t hg2cc:1; + uint64_t reserved_29_63:35; + } cn52xx; + struct cvmx_gmxx_rxx_int_reg_cn56xxp1 { + uint64_t reserved_0_0:1; + uint64_t carext:1; + uint64_t reserved_2_2:1; + uint64_t jabber:1; + uint64_t fcserr:1; + uint64_t reserved_5_6:2; + uint64_t rcverr:1; + uint64_t skperr:1; + uint64_t reserved_9_9:1; + uint64_t ovrerr:1; + uint64_t pcterr:1; + uint64_t rsverr:1; + uint64_t falerr:1; + uint64_t coldet:1; + uint64_t ifgerr:1; + uint64_t reserved_16_18:3; + uint64_t pause_drp:1; + uint64_t loc_fault:1; + uint64_t rem_fault:1; + uint64_t bad_seq:1; + uint64_t bad_term:1; + uint64_t unsop:1; + uint64_t uneop:1; + uint64_t undat:1; + uint64_t reserved_27_63:37; + } cn56xxp1; + struct cvmx_gmxx_rxx_int_reg_cn58xx { + uint64_t minerr:1; + uint64_t carext:1; + uint64_t maxerr:1; + uint64_t jabber:1; + uint64_t fcserr:1; + uint64_t alnerr:1; + uint64_t lenerr:1; + uint64_t rcverr:1; + uint64_t skperr:1; + uint64_t niberr:1; + uint64_t ovrerr:1; + uint64_t pcterr:1; + uint64_t rsverr:1; + uint64_t falerr:1; + uint64_t coldet:1; + uint64_t ifgerr:1; + uint64_t phy_link:1; + uint64_t phy_spd:1; + uint64_t phy_dupx:1; + uint64_t pause_drp:1; + uint64_t reserved_20_63:44; + } cn58xx; + struct cvmx_gmxx_rxx_int_reg_cn61xx { + uint64_t minerr:1; + uint64_t carext:1; + uint64_t reserved_2_2:1; + uint64_t jabber:1; + uint64_t fcserr:1; + uint64_t reserved_5_6:2; + uint64_t rcverr:1; + uint64_t skperr:1; + uint64_t reserved_9_9:1; + uint64_t ovrerr:1; + uint64_t pcterr:1; + uint64_t rsverr:1; + uint64_t falerr:1; + uint64_t coldet:1; + uint64_t ifgerr:1; + uint64_t reserved_16_18:3; + uint64_t pause_drp:1; + uint64_t loc_fault:1; + uint64_t rem_fault:1; + uint64_t bad_seq:1; + uint64_t bad_term:1; + uint64_t unsop:1; + uint64_t uneop:1; + uint64_t undat:1; + uint64_t hg2fld:1; + uint64_t hg2cc:1; + uint64_t reserved_29_63:35; + } cn61xx; +}; + +union cvmx_gmxx_prtx_cfg { + uint64_t u64; + struct cvmx_gmxx_prtx_cfg_s { + uint64_t reserved_22_63:42; + uint64_t pknd:6; + uint64_t reserved_14_15:2; + uint64_t tx_idle:1; + uint64_t rx_idle:1; + uint64_t reserved_9_11:3; + uint64_t speed_msb:1; + uint64_t reserved_4_7:4; + uint64_t slottime:1; + uint64_t duplex:1; + uint64_t speed:1; + uint64_t en:1; + } s; + struct cvmx_gmxx_prtx_cfg_cn30xx { + uint64_t reserved_4_63:60; + uint64_t slottime:1; + uint64_t duplex:1; + uint64_t speed:1; + uint64_t en:1; + } cn30xx; + struct cvmx_gmxx_prtx_cfg_cn52xx { + uint64_t reserved_14_63:50; + uint64_t tx_idle:1; + uint64_t rx_idle:1; + uint64_t reserved_9_11:3; + uint64_t speed_msb:1; + uint64_t reserved_4_7:4; + uint64_t slottime:1; + uint64_t duplex:1; + uint64_t speed:1; + uint64_t en:1; + } cn52xx; +}; + +union cvmx_gmxx_rxx_adr_ctl { + uint64_t u64; + struct cvmx_gmxx_rxx_adr_ctl_s { + uint64_t reserved_4_63:60; + uint64_t cam_mode:1; + uint64_t mcst:2; + uint64_t bcst:1; + } s; +}; + +union cvmx_pip_prt_tagx { + uint64_t u64; + struct cvmx_pip_prt_tagx_s { + uint64_t reserved_54_63:10; + uint64_t portadd_en:1; + uint64_t inc_hwchk:1; + uint64_t reserved_50_51:2; + uint64_t grptagbase_msb:2; + uint64_t reserved_46_47:2; + uint64_t grptagmask_msb:2; + uint64_t reserved_42_43:2; + uint64_t grp_msb:2; + uint64_t grptagbase:4; + uint64_t grptagmask:4; + uint64_t grptag:1; + uint64_t grptag_mskip:1; + uint64_t tag_mode:2; + uint64_t inc_vs:2; + uint64_t inc_vlan:1; + uint64_t inc_prt_flag:1; + uint64_t ip6_dprt_flag:1; + uint64_t ip4_dprt_flag:1; + uint64_t ip6_sprt_flag:1; + uint64_t ip4_sprt_flag:1; + uint64_t ip6_nxth_flag:1; + uint64_t ip4_pctl_flag:1; + uint64_t ip6_dst_flag:1; + uint64_t ip4_dst_flag:1; + uint64_t ip6_src_flag:1; + uint64_t ip4_src_flag:1; + uint64_t tcp6_tag_type:2; + uint64_t tcp4_tag_type:2; + uint64_t ip6_tag_type:2; + uint64_t ip4_tag_type:2; + uint64_t non_tag_type:2; + uint64_t grp:4; + } s; + struct cvmx_pip_prt_tagx_cn30xx { + uint64_t reserved_40_63:24; + uint64_t grptagbase:4; + uint64_t grptagmask:4; + uint64_t grptag:1; + uint64_t reserved_30_30:1; + uint64_t tag_mode:2; + uint64_t inc_vs:2; + uint64_t inc_vlan:1; + uint64_t inc_prt_flag:1; + uint64_t ip6_dprt_flag:1; + uint64_t ip4_dprt_flag:1; + uint64_t ip6_sprt_flag:1; + uint64_t ip4_sprt_flag:1; + uint64_t ip6_nxth_flag:1; + uint64_t ip4_pctl_flag:1; + uint64_t ip6_dst_flag:1; + uint64_t ip4_dst_flag:1; + uint64_t ip6_src_flag:1; + uint64_t ip4_src_flag:1; + uint64_t tcp6_tag_type:2; + uint64_t tcp4_tag_type:2; + uint64_t ip6_tag_type:2; + uint64_t ip4_tag_type:2; + uint64_t non_tag_type:2; + uint64_t grp:4; + } cn30xx; + struct cvmx_pip_prt_tagx_cn50xx { + uint64_t reserved_40_63:24; + uint64_t grptagbase:4; + uint64_t grptagmask:4; + uint64_t grptag:1; + uint64_t grptag_mskip:1; + uint64_t tag_mode:2; + uint64_t inc_vs:2; + uint64_t inc_vlan:1; + uint64_t inc_prt_flag:1; + uint64_t ip6_dprt_flag:1; + uint64_t ip4_dprt_flag:1; + uint64_t ip6_sprt_flag:1; + uint64_t ip4_sprt_flag:1; + uint64_t ip6_nxth_flag:1; + uint64_t ip4_pctl_flag:1; + uint64_t ip6_dst_flag:1; + uint64_t ip4_dst_flag:1; + uint64_t ip6_src_flag:1; + uint64_t ip4_src_flag:1; + uint64_t tcp6_tag_type:2; + uint64_t tcp4_tag_type:2; + uint64_t ip6_tag_type:2; + uint64_t ip4_tag_type:2; + uint64_t non_tag_type:2; + uint64_t grp:4; + } cn50xx; +}; + +union cvmx_spxx_int_reg { + uint64_t u64; + struct cvmx_spxx_int_reg_s { + uint64_t reserved_32_63:32; + uint64_t spf:1; + uint64_t reserved_12_30:19; + uint64_t calerr:1; + uint64_t syncerr:1; + uint64_t diperr:1; + uint64_t tpaovr:1; + uint64_t rsverr:1; + uint64_t drwnng:1; + uint64_t clserr:1; + uint64_t spiovr:1; + uint64_t reserved_2_3:2; + uint64_t abnorm:1; + uint64_t prtnxa:1; + } s; +}; + +union cvmx_spxx_int_msk { + uint64_t u64; + struct cvmx_spxx_int_msk_s { + uint64_t reserved_12_63:52; + uint64_t calerr:1; + uint64_t syncerr:1; + uint64_t diperr:1; + uint64_t tpaovr:1; + uint64_t rsverr:1; + uint64_t drwnng:1; + uint64_t clserr:1; + uint64_t spiovr:1; + uint64_t reserved_2_3:2; + uint64_t abnorm:1; + uint64_t prtnxa:1; + } s; +}; + +union cvmx_pow_wq_int { + uint64_t u64; + struct cvmx_pow_wq_int_s { + uint64_t wq_int:16; + uint64_t iq_dis:16; + uint64_t reserved_32_63:32; + } s; +}; + +union cvmx_sso_wq_int_thrx { + uint64_t u64; + struct { + uint64_t iq_thr:12; + uint64_t reserved_12_13:2; + uint64_t ds_thr:12; + uint64_t reserved_26_27:2; + uint64_t tc_thr:4; + uint64_t tc_en:1; + uint64_t reserved_33_63:31; + } s; +}; + +union cvmx_stxx_int_reg { + uint64_t u64; + struct cvmx_stxx_int_reg_s { + uint64_t reserved_9_63:55; + uint64_t syncerr:1; + uint64_t frmerr:1; + uint64_t unxfrm:1; + uint64_t nosync:1; + uint64_t diperr:1; + uint64_t datovr:1; + uint64_t ovrbst:1; + uint64_t calpar1:1; + uint64_t calpar0:1; + } s; +}; + +union cvmx_stxx_int_msk { + uint64_t u64; + struct cvmx_stxx_int_msk_s { + uint64_t reserved_8_63:56; + uint64_t frmerr:1; + uint64_t unxfrm:1; + uint64_t nosync:1; + uint64_t diperr:1; + uint64_t datovr:1; + uint64_t ovrbst:1; + uint64_t calpar1:1; + uint64_t calpar0:1; + } s; +}; + +union cvmx_pow_wq_int_pc { + uint64_t u64; + struct cvmx_pow_wq_int_pc_s { + uint64_t reserved_0_7:8; + uint64_t pc_thr:20; + uint64_t reserved_28_31:4; + uint64_t pc:28; + uint64_t reserved_60_63:4; + } s; +}; + +union cvmx_pow_wq_int_thrx { + uint64_t u64; + struct cvmx_pow_wq_int_thrx_s { + uint64_t reserved_29_63:35; + uint64_t tc_en:1; + uint64_t tc_thr:4; + uint64_t reserved_23_23:1; + uint64_t ds_thr:11; + uint64_t reserved_11_11:1; + uint64_t iq_thr:11; + } s; + struct cvmx_pow_wq_int_thrx_cn30xx { + uint64_t reserved_29_63:35; + uint64_t tc_en:1; + uint64_t tc_thr:4; + uint64_t reserved_18_23:6; + uint64_t ds_thr:6; + uint64_t reserved_6_11:6; + uint64_t iq_thr:6; + } cn30xx; + struct cvmx_pow_wq_int_thrx_cn31xx { + uint64_t reserved_29_63:35; + uint64_t tc_en:1; + uint64_t tc_thr:4; + uint64_t reserved_20_23:4; + uint64_t ds_thr:8; + uint64_t reserved_8_11:4; + uint64_t iq_thr:8; + } cn31xx; + struct cvmx_pow_wq_int_thrx_cn52xx { + uint64_t reserved_29_63:35; + uint64_t tc_en:1; + uint64_t tc_thr:4; + uint64_t reserved_21_23:3; + uint64_t ds_thr:9; + uint64_t reserved_9_11:3; + uint64_t iq_thr:9; + } cn52xx; + struct cvmx_pow_wq_int_thrx_cn63xx { + uint64_t reserved_29_63:35; + uint64_t tc_en:1; + uint64_t tc_thr:4; + uint64_t reserved_22_23:2; + uint64_t ds_thr:10; + uint64_t reserved_10_11:2; + uint64_t iq_thr:10; + } cn63xx; +}; + +union cvmx_npi_rsl_int_blocks { + uint64_t u64; + struct cvmx_npi_rsl_int_blocks_s { + uint64_t reserved_32_63:32; + uint64_t rint_31:1; + uint64_t iob:1; + uint64_t reserved_28_29:2; + uint64_t rint_27:1; + uint64_t rint_26:1; + uint64_t rint_25:1; + uint64_t rint_24:1; + uint64_t asx1:1; + uint64_t asx0:1; + uint64_t rint_21:1; + uint64_t pip:1; + uint64_t spx1:1; + uint64_t spx0:1; + uint64_t lmc:1; + uint64_t l2c:1; + uint64_t rint_15:1; + uint64_t reserved_13_14:2; + uint64_t pow:1; + uint64_t tim:1; + uint64_t pko:1; + uint64_t ipd:1; + uint64_t rint_8:1; + uint64_t zip:1; + uint64_t dfa:1; + uint64_t fpa:1; + uint64_t key:1; + uint64_t npi:1; + uint64_t gmx1:1; + uint64_t gmx0:1; + uint64_t mio:1; + } s; + struct cvmx_npi_rsl_int_blocks_cn30xx { + uint64_t reserved_32_63:32; + uint64_t rint_31:1; + uint64_t iob:1; + uint64_t rint_29:1; + uint64_t rint_28:1; + uint64_t rint_27:1; + uint64_t rint_26:1; + uint64_t rint_25:1; + uint64_t rint_24:1; + uint64_t asx1:1; + uint64_t asx0:1; + uint64_t rint_21:1; + uint64_t pip:1; + uint64_t spx1:1; + uint64_t spx0:1; + uint64_t lmc:1; + uint64_t l2c:1; + uint64_t rint_15:1; + uint64_t rint_14:1; + uint64_t usb:1; + uint64_t pow:1; + uint64_t tim:1; + uint64_t pko:1; + uint64_t ipd:1; + uint64_t rint_8:1; + uint64_t zip:1; + uint64_t dfa:1; + uint64_t fpa:1; + uint64_t key:1; + uint64_t npi:1; + uint64_t gmx1:1; + uint64_t gmx0:1; + uint64_t mio:1; + } cn30xx; + struct cvmx_npi_rsl_int_blocks_cn38xx { + uint64_t reserved_32_63:32; + uint64_t rint_31:1; + uint64_t iob:1; + uint64_t rint_29:1; + uint64_t rint_28:1; + uint64_t rint_27:1; + uint64_t rint_26:1; + uint64_t rint_25:1; + uint64_t rint_24:1; + uint64_t asx1:1; + uint64_t asx0:1; + uint64_t rint_21:1; + uint64_t pip:1; + uint64_t spx1:1; + uint64_t spx0:1; + uint64_t lmc:1; + uint64_t l2c:1; + uint64_t rint_15:1; + uint64_t rint_14:1; + uint64_t rint_13:1; + uint64_t pow:1; + uint64_t tim:1; + uint64_t pko:1; + uint64_t ipd:1; + uint64_t rint_8:1; + uint64_t zip:1; + uint64_t dfa:1; + uint64_t fpa:1; + uint64_t key:1; + uint64_t npi:1; + uint64_t gmx1:1; + uint64_t gmx0:1; + uint64_t mio:1; + } cn38xx; + struct cvmx_npi_rsl_int_blocks_cn50xx { + uint64_t reserved_31_63:33; + uint64_t iob:1; + uint64_t lmc1:1; + uint64_t agl:1; + uint64_t reserved_24_27:4; + uint64_t asx1:1; + uint64_t asx0:1; + uint64_t reserved_21_21:1; + uint64_t pip:1; + uint64_t spx1:1; + uint64_t spx0:1; + uint64_t lmc:1; + uint64_t l2c:1; + uint64_t reserved_15_15:1; + uint64_t rad:1; + uint64_t usb:1; + uint64_t pow:1; + uint64_t tim:1; + uint64_t pko:1; + uint64_t ipd:1; + uint64_t reserved_8_8:1; + uint64_t zip:1; + uint64_t dfa:1; + uint64_t fpa:1; + uint64_t key:1; + uint64_t npi:1; + uint64_t gmx1:1; + uint64_t gmx0:1; + uint64_t mio:1; + } cn50xx; +}; + +union cvmx_pko_command_word0 { + uint64_t u64; + struct { + uint64_t total_bytes:16; + uint64_t segs:6; + uint64_t dontfree:1; + uint64_t ignore_i:1; + uint64_t ipoffp1:7; + uint64_t gather:1; + uint64_t rsp:1; + uint64_t wqp:1; + uint64_t n2:1; + uint64_t le:1; + uint64_t reg0:11; + uint64_t subone0:1; + uint64_t reg1:11; + uint64_t subone1:1; + uint64_t size0:2; + uint64_t size1:2; + } s; +}; + +union cvmx_ciu_timx { + uint64_t u64; + struct cvmx_ciu_timx_s { + uint64_t reserved_37_63:27; + uint64_t one_shot:1; + uint64_t len:36; + } s; +}; + +union cvmx_gmxx_rxx_rx_inbnd { + uint64_t u64; + struct cvmx_gmxx_rxx_rx_inbnd_s { + uint64_t status:1; + uint64_t speed:2; + uint64_t duplex:1; + uint64_t reserved_4_63:60; + } s; +}; + +static inline int32_t cvmx_fau_fetch_and_add32(enum cvmx_fau_reg_32 reg, + int32_t value) +{ + return value; +} + +static inline void cvmx_fau_atomic_add32(enum cvmx_fau_reg_32 reg, + int32_t value) +{ } + +static inline void cvmx_fau_atomic_write32(enum cvmx_fau_reg_32 reg, + int32_t value) +{ } + +static inline uint64_t cvmx_scratch_read64(uint64_t address) +{ + return 0; +} + +static inline void cvmx_scratch_write64(uint64_t address, uint64_t value) +{ } + +static inline int cvmx_wqe_get_grp(struct cvmx_wqe *work) +{ + return 0; +} + +static inline void *cvmx_phys_to_ptr(uint64_t physical_address) +{ + return (void *)(uintptr_t)(physical_address); +} + +static inline uint64_t cvmx_ptr_to_phys(void *ptr) +{ + return (unsigned long)ptr; +} + +static inline int cvmx_helper_get_interface_num(int ipd_port) +{ + return ipd_port; +} + +static inline int cvmx_helper_get_interface_index_num(int ipd_port) +{ + return ipd_port; +} + +static inline void cvmx_fpa_enable(void) +{ } + +static inline uint64_t cvmx_read_csr(uint64_t csr_addr) +{ + return 0; +} + +static inline void cvmx_write_csr(uint64_t csr_addr, uint64_t val) +{ } + +static inline int cvmx_helper_setup_red(int pass_thresh, int drop_thresh) +{ + return 0; +} + +static inline void *cvmx_fpa_alloc(uint64_t pool) +{ + return NULL; +} + +static inline void cvmx_fpa_free(void *ptr, uint64_t pool, + uint64_t num_cache_lines) +{ } + +static inline int octeon_is_simulation(void) +{ + return 1; +} + +static inline void cvmx_pip_get_port_status(uint64_t port_num, uint64_t clear, + cvmx_pip_port_status_t *status) +{ } + +static inline void cvmx_pko_get_port_status(uint64_t port_num, uint64_t clear, + cvmx_pko_port_status_t *status) +{ } + +static inline cvmx_helper_interface_mode_t cvmx_helper_interface_get_mode(int + interface) +{ + return 0; +} + +static inline union cvmx_helper_link_info cvmx_helper_link_get(int ipd_port) +{ + union cvmx_helper_link_info ret = { .u64 = 0 }; + + return ret; +} + +static inline int cvmx_helper_link_set(int ipd_port, + union cvmx_helper_link_info link_info) +{ + return 0; +} + +static inline int cvmx_helper_initialize_packet_io_global(void) +{ + return 0; +} + +static inline int cvmx_helper_get_number_of_interfaces(void) +{ + return 2; +} + +static inline int cvmx_helper_ports_on_interface(int interface) +{ + return 1; +} + +static inline int cvmx_helper_get_ipd_port(int interface, int port) +{ + return 0; +} + +static inline int cvmx_helper_ipd_and_packet_input_enable(void) +{ + return 0; +} + +static inline void cvmx_ipd_disable(void) +{ } + +static inline void cvmx_ipd_free_ptr(void) +{ } + +static inline void cvmx_pko_disable(void) +{ } + +static inline void cvmx_pko_shutdown(void) +{ } + +static inline int cvmx_pko_get_base_queue_per_core(int port, int core) +{ + return port; +} + +static inline int cvmx_pko_get_base_queue(int port) +{ + return port; +} + +static inline int cvmx_pko_get_num_queues(int port) +{ + return port; +} + +static inline unsigned int cvmx_get_core_num(void) +{ + return 0; +} + +static inline void cvmx_pow_work_request_async_nocheck(int scr_addr, + cvmx_pow_wait_t wait) +{ } + +static inline void cvmx_pow_work_request_async(int scr_addr, + cvmx_pow_wait_t wait) +{ } + +static inline struct cvmx_wqe *cvmx_pow_work_response_async(int scr_addr) +{ + struct cvmx_wqe *wqe = (void *)(unsigned long)scr_addr; + + return wqe; +} + +static inline struct cvmx_wqe *cvmx_pow_work_request_sync(cvmx_pow_wait_t wait) +{ + return (void *)(unsigned long)wait; +} + +static inline int cvmx_spi_restart_interface(int interface, + cvmx_spi_mode_t mode, int timeout) +{ + return 0; +} + +static inline void cvmx_fau_async_fetch_and_add32(uint64_t scraddr, + enum cvmx_fau_reg_32 reg, + int32_t value) +{ } + +static inline union cvmx_gmxx_rxx_rx_inbnd cvmx_spi4000_check_speed( + int interface, + int port) +{ + union cvmx_gmxx_rxx_rx_inbnd r; + + r.u64 = 0; + return r; +} + +static inline void cvmx_pko_send_packet_prepare(uint64_t port, uint64_t queue, + cvmx_pko_lock_t use_locking) +{ } + +static inline cvmx_pko_status_t cvmx_pko_send_packet_finish(uint64_t port, + uint64_t queue, union cvmx_pko_command_word0 pko_command, + union cvmx_buf_ptr packet, cvmx_pko_lock_t use_locking) +{ + return 0; +} + +static inline void cvmx_wqe_set_port(struct cvmx_wqe *work, int port) +{ } + +static inline void cvmx_wqe_set_qos(struct cvmx_wqe *work, int qos) +{ } + +static inline int cvmx_wqe_get_qos(struct cvmx_wqe *work) +{ + return 0; +} + +static inline void cvmx_wqe_set_grp(struct cvmx_wqe *work, int grp) +{ } + +static inline void cvmx_pow_work_submit(struct cvmx_wqe *wqp, uint32_t tag, + enum cvmx_pow_tag_type tag_type, + uint64_t qos, uint64_t grp) +{ } + +#define CVMX_ASXX_RX_CLK_SETX(a, b) ((a) + (b)) +#define CVMX_ASXX_TX_CLK_SETX(a, b) ((a) + (b)) +#define CVMX_CIU_TIMX(a) (a) +#define CVMX_GMXX_RXX_ADR_CAM0(a, b) ((a) + (b)) +#define CVMX_GMXX_RXX_ADR_CAM1(a, b) ((a) + (b)) +#define CVMX_GMXX_RXX_ADR_CAM2(a, b) ((a) + (b)) +#define CVMX_GMXX_RXX_ADR_CAM3(a, b) ((a) + (b)) +#define CVMX_GMXX_RXX_ADR_CAM4(a, b) ((a) + (b)) +#define CVMX_GMXX_RXX_ADR_CAM5(a, b) ((a) + (b)) +#define CVMX_GMXX_RXX_FRM_CTL(a, b) ((a) + (b)) +#define CVMX_GMXX_RXX_INT_REG(a, b) ((a) + (b)) +#define CVMX_GMXX_SMACX(a, b) ((a) + (b)) +#define CVMX_PIP_PRT_TAGX(a) (a) +#define CVMX_POW_PP_GRP_MSKX(a) (a) +#define CVMX_POW_WQ_INT_THRX(a) (a) +#define CVMX_SPXX_INT_MSK(a) (a) +#define CVMX_SPXX_INT_REG(a) (a) +#define CVMX_SSO_PPX_GRP_MSK(a) (a) +#define CVMX_SSO_WQ_INT_THRX(a) (a) +#define CVMX_STXX_INT_MSK(a) (a) +#define CVMX_STXX_INT_REG(a) (a) |