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linuxdebug/drivers/net/ethernet/microchip/sparx5/sparx5_main.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0+
/* Microchip Sparx5 Switch driver
*
* Copyright (c) 2021 Microchip Technology Inc. and its subsidiaries.
*
* The Sparx5 Chip Register Model can be browsed at this location:
* https://github.com/microchip-ung/sparx-5_reginfo
*/
#include <linux/module.h>
#include <linux/device.h>
#include <linux/netdevice.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/of.h>
#include <linux/of_net.h>
#include <linux/of_mdio.h>
#include <net/switchdev.h>
#include <linux/etherdevice.h>
#include <linux/io.h>
#include <linux/printk.h>
#include <linux/iopoll.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include <linux/types.h>
#include <linux/reset.h>
#include "sparx5_main_regs.h"
#include "sparx5_main.h"
#include "sparx5_port.h"
#include "sparx5_qos.h"
#define QLIM_WM(fraction) \
((SPX5_BUFFER_MEMORY / SPX5_BUFFER_CELL_SZ - 100) * (fraction) / 100)
#define IO_RANGES 3
struct initial_port_config {
u32 portno;
struct device_node *node;
struct sparx5_port_config conf;
struct phy *serdes;
};
struct sparx5_ram_config {
void __iomem *init_reg;
u32 init_val;
};
struct sparx5_main_io_resource {
enum sparx5_target id;
phys_addr_t offset;
int range;
};
static const struct sparx5_main_io_resource sparx5_main_iomap[] = {
{ TARGET_CPU, 0, 0 }, /* 0x600000000 */
{ TARGET_FDMA, 0x80000, 0 }, /* 0x600080000 */
{ TARGET_PCEP, 0x400000, 0 }, /* 0x600400000 */
{ TARGET_DEV2G5, 0x10004000, 1 }, /* 0x610004000 */
{ TARGET_DEV5G, 0x10008000, 1 }, /* 0x610008000 */
{ TARGET_PCS5G_BR, 0x1000c000, 1 }, /* 0x61000c000 */
{ TARGET_DEV2G5 + 1, 0x10010000, 1 }, /* 0x610010000 */
{ TARGET_DEV5G + 1, 0x10014000, 1 }, /* 0x610014000 */
{ TARGET_PCS5G_BR + 1, 0x10018000, 1 }, /* 0x610018000 */
{ TARGET_DEV2G5 + 2, 0x1001c000, 1 }, /* 0x61001c000 */
{ TARGET_DEV5G + 2, 0x10020000, 1 }, /* 0x610020000 */
{ TARGET_PCS5G_BR + 2, 0x10024000, 1 }, /* 0x610024000 */
{ TARGET_DEV2G5 + 6, 0x10028000, 1 }, /* 0x610028000 */
{ TARGET_DEV5G + 6, 0x1002c000, 1 }, /* 0x61002c000 */
{ TARGET_PCS5G_BR + 6, 0x10030000, 1 }, /* 0x610030000 */
{ TARGET_DEV2G5 + 7, 0x10034000, 1 }, /* 0x610034000 */
{ TARGET_DEV5G + 7, 0x10038000, 1 }, /* 0x610038000 */
{ TARGET_PCS5G_BR + 7, 0x1003c000, 1 }, /* 0x61003c000 */
{ TARGET_DEV2G5 + 8, 0x10040000, 1 }, /* 0x610040000 */
{ TARGET_DEV5G + 8, 0x10044000, 1 }, /* 0x610044000 */
{ TARGET_PCS5G_BR + 8, 0x10048000, 1 }, /* 0x610048000 */
{ TARGET_DEV2G5 + 9, 0x1004c000, 1 }, /* 0x61004c000 */
{ TARGET_DEV5G + 9, 0x10050000, 1 }, /* 0x610050000 */
{ TARGET_PCS5G_BR + 9, 0x10054000, 1 }, /* 0x610054000 */
{ TARGET_DEV2G5 + 10, 0x10058000, 1 }, /* 0x610058000 */
{ TARGET_DEV5G + 10, 0x1005c000, 1 }, /* 0x61005c000 */
{ TARGET_PCS5G_BR + 10, 0x10060000, 1 }, /* 0x610060000 */
{ TARGET_DEV2G5 + 11, 0x10064000, 1 }, /* 0x610064000 */
{ TARGET_DEV5G + 11, 0x10068000, 1 }, /* 0x610068000 */
{ TARGET_PCS5G_BR + 11, 0x1006c000, 1 }, /* 0x61006c000 */
{ TARGET_DEV2G5 + 12, 0x10070000, 1 }, /* 0x610070000 */
{ TARGET_DEV10G, 0x10074000, 1 }, /* 0x610074000 */
{ TARGET_PCS10G_BR, 0x10078000, 1 }, /* 0x610078000 */
{ TARGET_DEV2G5 + 14, 0x1007c000, 1 }, /* 0x61007c000 */
{ TARGET_DEV10G + 2, 0x10080000, 1 }, /* 0x610080000 */
{ TARGET_PCS10G_BR + 2, 0x10084000, 1 }, /* 0x610084000 */
{ TARGET_DEV2G5 + 15, 0x10088000, 1 }, /* 0x610088000 */
{ TARGET_DEV10G + 3, 0x1008c000, 1 }, /* 0x61008c000 */
{ TARGET_PCS10G_BR + 3, 0x10090000, 1 }, /* 0x610090000 */
{ TARGET_DEV2G5 + 16, 0x10094000, 1 }, /* 0x610094000 */
{ TARGET_DEV2G5 + 17, 0x10098000, 1 }, /* 0x610098000 */
{ TARGET_DEV2G5 + 18, 0x1009c000, 1 }, /* 0x61009c000 */
{ TARGET_DEV2G5 + 19, 0x100a0000, 1 }, /* 0x6100a0000 */
{ TARGET_DEV2G5 + 20, 0x100a4000, 1 }, /* 0x6100a4000 */
{ TARGET_DEV2G5 + 21, 0x100a8000, 1 }, /* 0x6100a8000 */
{ TARGET_DEV2G5 + 22, 0x100ac000, 1 }, /* 0x6100ac000 */
{ TARGET_DEV2G5 + 23, 0x100b0000, 1 }, /* 0x6100b0000 */
{ TARGET_DEV2G5 + 32, 0x100b4000, 1 }, /* 0x6100b4000 */
{ TARGET_DEV2G5 + 33, 0x100b8000, 1 }, /* 0x6100b8000 */
{ TARGET_DEV2G5 + 34, 0x100bc000, 1 }, /* 0x6100bc000 */
{ TARGET_DEV2G5 + 35, 0x100c0000, 1 }, /* 0x6100c0000 */
{ TARGET_DEV2G5 + 36, 0x100c4000, 1 }, /* 0x6100c4000 */
{ TARGET_DEV2G5 + 37, 0x100c8000, 1 }, /* 0x6100c8000 */
{ TARGET_DEV2G5 + 38, 0x100cc000, 1 }, /* 0x6100cc000 */
{ TARGET_DEV2G5 + 39, 0x100d0000, 1 }, /* 0x6100d0000 */
{ TARGET_DEV2G5 + 40, 0x100d4000, 1 }, /* 0x6100d4000 */
{ TARGET_DEV2G5 + 41, 0x100d8000, 1 }, /* 0x6100d8000 */
{ TARGET_DEV2G5 + 42, 0x100dc000, 1 }, /* 0x6100dc000 */
{ TARGET_DEV2G5 + 43, 0x100e0000, 1 }, /* 0x6100e0000 */
{ TARGET_DEV2G5 + 44, 0x100e4000, 1 }, /* 0x6100e4000 */
{ TARGET_DEV2G5 + 45, 0x100e8000, 1 }, /* 0x6100e8000 */
{ TARGET_DEV2G5 + 46, 0x100ec000, 1 }, /* 0x6100ec000 */
{ TARGET_DEV2G5 + 47, 0x100f0000, 1 }, /* 0x6100f0000 */
{ TARGET_DEV2G5 + 57, 0x100f4000, 1 }, /* 0x6100f4000 */
{ TARGET_DEV25G + 1, 0x100f8000, 1 }, /* 0x6100f8000 */
{ TARGET_PCS25G_BR + 1, 0x100fc000, 1 }, /* 0x6100fc000 */
{ TARGET_DEV2G5 + 59, 0x10104000, 1 }, /* 0x610104000 */
{ TARGET_DEV25G + 3, 0x10108000, 1 }, /* 0x610108000 */
{ TARGET_PCS25G_BR + 3, 0x1010c000, 1 }, /* 0x61010c000 */
{ TARGET_DEV2G5 + 60, 0x10114000, 1 }, /* 0x610114000 */
{ TARGET_DEV25G + 4, 0x10118000, 1 }, /* 0x610118000 */
{ TARGET_PCS25G_BR + 4, 0x1011c000, 1 }, /* 0x61011c000 */
{ TARGET_DEV2G5 + 64, 0x10124000, 1 }, /* 0x610124000 */
{ TARGET_DEV5G + 12, 0x10128000, 1 }, /* 0x610128000 */
{ TARGET_PCS5G_BR + 12, 0x1012c000, 1 }, /* 0x61012c000 */
{ TARGET_PORT_CONF, 0x10130000, 1 }, /* 0x610130000 */
{ TARGET_DEV2G5 + 3, 0x10404000, 1 }, /* 0x610404000 */
{ TARGET_DEV5G + 3, 0x10408000, 1 }, /* 0x610408000 */
{ TARGET_PCS5G_BR + 3, 0x1040c000, 1 }, /* 0x61040c000 */
{ TARGET_DEV2G5 + 4, 0x10410000, 1 }, /* 0x610410000 */
{ TARGET_DEV5G + 4, 0x10414000, 1 }, /* 0x610414000 */
{ TARGET_PCS5G_BR + 4, 0x10418000, 1 }, /* 0x610418000 */
{ TARGET_DEV2G5 + 5, 0x1041c000, 1 }, /* 0x61041c000 */
{ TARGET_DEV5G + 5, 0x10420000, 1 }, /* 0x610420000 */
{ TARGET_PCS5G_BR + 5, 0x10424000, 1 }, /* 0x610424000 */
{ TARGET_DEV2G5 + 13, 0x10428000, 1 }, /* 0x610428000 */
{ TARGET_DEV10G + 1, 0x1042c000, 1 }, /* 0x61042c000 */
{ TARGET_PCS10G_BR + 1, 0x10430000, 1 }, /* 0x610430000 */
{ TARGET_DEV2G5 + 24, 0x10434000, 1 }, /* 0x610434000 */
{ TARGET_DEV2G5 + 25, 0x10438000, 1 }, /* 0x610438000 */
{ TARGET_DEV2G5 + 26, 0x1043c000, 1 }, /* 0x61043c000 */
{ TARGET_DEV2G5 + 27, 0x10440000, 1 }, /* 0x610440000 */
{ TARGET_DEV2G5 + 28, 0x10444000, 1 }, /* 0x610444000 */
{ TARGET_DEV2G5 + 29, 0x10448000, 1 }, /* 0x610448000 */
{ TARGET_DEV2G5 + 30, 0x1044c000, 1 }, /* 0x61044c000 */
{ TARGET_DEV2G5 + 31, 0x10450000, 1 }, /* 0x610450000 */
{ TARGET_DEV2G5 + 48, 0x10454000, 1 }, /* 0x610454000 */
{ TARGET_DEV10G + 4, 0x10458000, 1 }, /* 0x610458000 */
{ TARGET_PCS10G_BR + 4, 0x1045c000, 1 }, /* 0x61045c000 */
{ TARGET_DEV2G5 + 49, 0x10460000, 1 }, /* 0x610460000 */
{ TARGET_DEV10G + 5, 0x10464000, 1 }, /* 0x610464000 */
{ TARGET_PCS10G_BR + 5, 0x10468000, 1 }, /* 0x610468000 */
{ TARGET_DEV2G5 + 50, 0x1046c000, 1 }, /* 0x61046c000 */
{ TARGET_DEV10G + 6, 0x10470000, 1 }, /* 0x610470000 */
{ TARGET_PCS10G_BR + 6, 0x10474000, 1 }, /* 0x610474000 */
{ TARGET_DEV2G5 + 51, 0x10478000, 1 }, /* 0x610478000 */
{ TARGET_DEV10G + 7, 0x1047c000, 1 }, /* 0x61047c000 */
{ TARGET_PCS10G_BR + 7, 0x10480000, 1 }, /* 0x610480000 */
{ TARGET_DEV2G5 + 52, 0x10484000, 1 }, /* 0x610484000 */
{ TARGET_DEV10G + 8, 0x10488000, 1 }, /* 0x610488000 */
{ TARGET_PCS10G_BR + 8, 0x1048c000, 1 }, /* 0x61048c000 */
{ TARGET_DEV2G5 + 53, 0x10490000, 1 }, /* 0x610490000 */
{ TARGET_DEV10G + 9, 0x10494000, 1 }, /* 0x610494000 */
{ TARGET_PCS10G_BR + 9, 0x10498000, 1 }, /* 0x610498000 */
{ TARGET_DEV2G5 + 54, 0x1049c000, 1 }, /* 0x61049c000 */
{ TARGET_DEV10G + 10, 0x104a0000, 1 }, /* 0x6104a0000 */
{ TARGET_PCS10G_BR + 10, 0x104a4000, 1 }, /* 0x6104a4000 */
{ TARGET_DEV2G5 + 55, 0x104a8000, 1 }, /* 0x6104a8000 */
{ TARGET_DEV10G + 11, 0x104ac000, 1 }, /* 0x6104ac000 */
{ TARGET_PCS10G_BR + 11, 0x104b0000, 1 }, /* 0x6104b0000 */
{ TARGET_DEV2G5 + 56, 0x104b4000, 1 }, /* 0x6104b4000 */
{ TARGET_DEV25G, 0x104b8000, 1 }, /* 0x6104b8000 */
{ TARGET_PCS25G_BR, 0x104bc000, 1 }, /* 0x6104bc000 */
{ TARGET_DEV2G5 + 58, 0x104c4000, 1 }, /* 0x6104c4000 */
{ TARGET_DEV25G + 2, 0x104c8000, 1 }, /* 0x6104c8000 */
{ TARGET_PCS25G_BR + 2, 0x104cc000, 1 }, /* 0x6104cc000 */
{ TARGET_DEV2G5 + 61, 0x104d4000, 1 }, /* 0x6104d4000 */
{ TARGET_DEV25G + 5, 0x104d8000, 1 }, /* 0x6104d8000 */
{ TARGET_PCS25G_BR + 5, 0x104dc000, 1 }, /* 0x6104dc000 */
{ TARGET_DEV2G5 + 62, 0x104e4000, 1 }, /* 0x6104e4000 */
{ TARGET_DEV25G + 6, 0x104e8000, 1 }, /* 0x6104e8000 */
{ TARGET_PCS25G_BR + 6, 0x104ec000, 1 }, /* 0x6104ec000 */
{ TARGET_DEV2G5 + 63, 0x104f4000, 1 }, /* 0x6104f4000 */
{ TARGET_DEV25G + 7, 0x104f8000, 1 }, /* 0x6104f8000 */
{ TARGET_PCS25G_BR + 7, 0x104fc000, 1 }, /* 0x6104fc000 */
{ TARGET_DSM, 0x10504000, 1 }, /* 0x610504000 */
{ TARGET_ASM, 0x10600000, 1 }, /* 0x610600000 */
{ TARGET_GCB, 0x11010000, 2 }, /* 0x611010000 */
{ TARGET_QS, 0x11030000, 2 }, /* 0x611030000 */
{ TARGET_PTP, 0x11040000, 2 }, /* 0x611040000 */
{ TARGET_ANA_ACL, 0x11050000, 2 }, /* 0x611050000 */
{ TARGET_LRN, 0x11060000, 2 }, /* 0x611060000 */
{ TARGET_VCAP_SUPER, 0x11080000, 2 }, /* 0x611080000 */
{ TARGET_QSYS, 0x110a0000, 2 }, /* 0x6110a0000 */
{ TARGET_QFWD, 0x110b0000, 2 }, /* 0x6110b0000 */
{ TARGET_XQS, 0x110c0000, 2 }, /* 0x6110c0000 */
{ TARGET_CLKGEN, 0x11100000, 2 }, /* 0x611100000 */
{ TARGET_ANA_AC_POL, 0x11200000, 2 }, /* 0x611200000 */
{ TARGET_QRES, 0x11280000, 2 }, /* 0x611280000 */
{ TARGET_EACL, 0x112c0000, 2 }, /* 0x6112c0000 */
{ TARGET_ANA_CL, 0x11400000, 2 }, /* 0x611400000 */
{ TARGET_ANA_L3, 0x11480000, 2 }, /* 0x611480000 */
{ TARGET_HSCH, 0x11580000, 2 }, /* 0x611580000 */
{ TARGET_REW, 0x11600000, 2 }, /* 0x611600000 */
{ TARGET_ANA_L2, 0x11800000, 2 }, /* 0x611800000 */
{ TARGET_ANA_AC, 0x11900000, 2 }, /* 0x611900000 */
{ TARGET_VOP, 0x11a00000, 2 }, /* 0x611a00000 */
};
static int sparx5_create_targets(struct sparx5 *sparx5)
{
struct resource *iores[IO_RANGES];
void __iomem *iomem[IO_RANGES];
void __iomem *begin[IO_RANGES];
int range_id[IO_RANGES];
int idx, jdx;
for (idx = 0, jdx = 0; jdx < ARRAY_SIZE(sparx5_main_iomap); jdx++) {
const struct sparx5_main_io_resource *iomap = &sparx5_main_iomap[jdx];
if (idx == iomap->range) {
range_id[idx] = jdx;
idx++;
}
}
for (idx = 0; idx < IO_RANGES; idx++) {
iores[idx] = platform_get_resource(sparx5->pdev, IORESOURCE_MEM,
idx);
if (!iores[idx]) {
dev_err(sparx5->dev, "Invalid resource\n");
return -EINVAL;
}
iomem[idx] = devm_ioremap(sparx5->dev,
iores[idx]->start,
resource_size(iores[idx]));
if (!iomem[idx]) {
dev_err(sparx5->dev, "Unable to get switch registers: %s\n",
iores[idx]->name);
return -ENOMEM;
}
begin[idx] = iomem[idx] - sparx5_main_iomap[range_id[idx]].offset;
}
for (jdx = 0; jdx < ARRAY_SIZE(sparx5_main_iomap); jdx++) {
const struct sparx5_main_io_resource *iomap = &sparx5_main_iomap[jdx];
sparx5->regs[iomap->id] = begin[iomap->range] + iomap->offset;
}
return 0;
}
static int sparx5_create_port(struct sparx5 *sparx5,
struct initial_port_config *config)
{
struct sparx5_port *spx5_port;
struct net_device *ndev;
struct phylink *phylink;
int err;
ndev = sparx5_create_netdev(sparx5, config->portno);
if (IS_ERR(ndev)) {
dev_err(sparx5->dev, "Could not create net device: %02u\n",
config->portno);
return PTR_ERR(ndev);
}
spx5_port = netdev_priv(ndev);
spx5_port->of_node = config->node;
spx5_port->serdes = config->serdes;
spx5_port->pvid = NULL_VID;
spx5_port->signd_internal = true;
spx5_port->signd_active_high = true;
spx5_port->signd_enable = true;
spx5_port->max_vlan_tags = SPX5_PORT_MAX_TAGS_NONE;
spx5_port->vlan_type = SPX5_VLAN_PORT_TYPE_UNAWARE;
spx5_port->custom_etype = 0x8880; /* Vitesse */
spx5_port->phylink_pcs.poll = true;
spx5_port->phylink_pcs.ops = &sparx5_phylink_pcs_ops;
spx5_port->is_mrouter = false;
sparx5->ports[config->portno] = spx5_port;
err = sparx5_port_init(sparx5, spx5_port, &config->conf);
if (err) {
dev_err(sparx5->dev, "port init failed\n");
return err;
}
spx5_port->conf = config->conf;
/* Setup VLAN */
sparx5_vlan_port_setup(sparx5, spx5_port->portno);
/* Create a phylink for PHY management. Also handles SFPs */
spx5_port->phylink_config.dev = &spx5_port->ndev->dev;
spx5_port->phylink_config.type = PHYLINK_NETDEV;
spx5_port->phylink_config.mac_capabilities = MAC_ASYM_PAUSE |
MAC_SYM_PAUSE | MAC_10 | MAC_100 | MAC_1000FD |
MAC_2500FD | MAC_5000FD | MAC_10000FD | MAC_25000FD;
__set_bit(PHY_INTERFACE_MODE_SGMII,
spx5_port->phylink_config.supported_interfaces);
__set_bit(PHY_INTERFACE_MODE_QSGMII,
spx5_port->phylink_config.supported_interfaces);
__set_bit(PHY_INTERFACE_MODE_1000BASEX,
spx5_port->phylink_config.supported_interfaces);
__set_bit(PHY_INTERFACE_MODE_2500BASEX,
spx5_port->phylink_config.supported_interfaces);
if (spx5_port->conf.bandwidth == SPEED_5000 ||
spx5_port->conf.bandwidth == SPEED_10000 ||
spx5_port->conf.bandwidth == SPEED_25000)
__set_bit(PHY_INTERFACE_MODE_5GBASER,
spx5_port->phylink_config.supported_interfaces);
if (spx5_port->conf.bandwidth == SPEED_10000 ||
spx5_port->conf.bandwidth == SPEED_25000)
__set_bit(PHY_INTERFACE_MODE_10GBASER,
spx5_port->phylink_config.supported_interfaces);
if (spx5_port->conf.bandwidth == SPEED_25000)
__set_bit(PHY_INTERFACE_MODE_25GBASER,
spx5_port->phylink_config.supported_interfaces);
phylink = phylink_create(&spx5_port->phylink_config,
of_fwnode_handle(config->node),
config->conf.phy_mode,
&sparx5_phylink_mac_ops);
if (IS_ERR(phylink))
return PTR_ERR(phylink);
spx5_port->phylink = phylink;
return 0;
}
static int sparx5_init_ram(struct sparx5 *s5)
{
const struct sparx5_ram_config spx5_ram_cfg[] = {
{spx5_reg_get(s5, ANA_AC_STAT_RESET), ANA_AC_STAT_RESET_RESET},
{spx5_reg_get(s5, ASM_STAT_CFG), ASM_STAT_CFG_STAT_CNT_CLR_SHOT},
{spx5_reg_get(s5, QSYS_RAM_INIT), QSYS_RAM_INIT_RAM_INIT},
{spx5_reg_get(s5, REW_RAM_INIT), QSYS_RAM_INIT_RAM_INIT},
{spx5_reg_get(s5, VOP_RAM_INIT), QSYS_RAM_INIT_RAM_INIT},
{spx5_reg_get(s5, ANA_AC_RAM_INIT), QSYS_RAM_INIT_RAM_INIT},
{spx5_reg_get(s5, ASM_RAM_INIT), QSYS_RAM_INIT_RAM_INIT},
{spx5_reg_get(s5, EACL_RAM_INIT), QSYS_RAM_INIT_RAM_INIT},
{spx5_reg_get(s5, VCAP_SUPER_RAM_INIT), QSYS_RAM_INIT_RAM_INIT},
{spx5_reg_get(s5, DSM_RAM_INIT), QSYS_RAM_INIT_RAM_INIT}
};
const struct sparx5_ram_config *cfg;
u32 value, pending, jdx, idx;
for (jdx = 0; jdx < 10; jdx++) {
pending = ARRAY_SIZE(spx5_ram_cfg);
for (idx = 0; idx < ARRAY_SIZE(spx5_ram_cfg); idx++) {
cfg = &spx5_ram_cfg[idx];
if (jdx == 0) {
writel(cfg->init_val, cfg->init_reg);
} else {
value = readl(cfg->init_reg);
if ((value & cfg->init_val) != cfg->init_val)
pending--;
}
}
if (!pending)
break;
usleep_range(USEC_PER_MSEC, 2 * USEC_PER_MSEC);
}
if (pending > 0) {
/* Still initializing, should be complete in
* less than 1ms
*/
dev_err(s5->dev, "Memory initialization error\n");
return -EINVAL;
}
return 0;
}
static int sparx5_init_switchcore(struct sparx5 *sparx5)
{
u32 value;
int err = 0;
spx5_rmw(EACL_POL_EACL_CFG_EACL_FORCE_INIT_SET(1),
EACL_POL_EACL_CFG_EACL_FORCE_INIT,
sparx5,
EACL_POL_EACL_CFG);
spx5_rmw(EACL_POL_EACL_CFG_EACL_FORCE_INIT_SET(0),
EACL_POL_EACL_CFG_EACL_FORCE_INIT,
sparx5,
EACL_POL_EACL_CFG);
/* Initialize memories, if not done already */
value = spx5_rd(sparx5, HSCH_RESET_CFG);
if (!(value & HSCH_RESET_CFG_CORE_ENA)) {
err = sparx5_init_ram(sparx5);
if (err)
return err;
}
/* Reset counters */
spx5_wr(ANA_AC_STAT_RESET_RESET_SET(1), sparx5, ANA_AC_STAT_RESET);
spx5_wr(ASM_STAT_CFG_STAT_CNT_CLR_SHOT_SET(1), sparx5, ASM_STAT_CFG);
/* Enable switch-core and queue system */
spx5_wr(HSCH_RESET_CFG_CORE_ENA_SET(1), sparx5, HSCH_RESET_CFG);
return 0;
}
static int sparx5_init_coreclock(struct sparx5 *sparx5)
{
enum sparx5_core_clockfreq freq = sparx5->coreclock;
u32 clk_div, clk_period, pol_upd_int, idx;
/* Verify if core clock frequency is supported on target.
* If 'VTSS_CORE_CLOCK_DEFAULT' then the highest supported
* freq. is used
*/
switch (sparx5->target_ct) {
case SPX5_TARGET_CT_7546:
if (sparx5->coreclock == SPX5_CORE_CLOCK_DEFAULT)
freq = SPX5_CORE_CLOCK_250MHZ;
else if (sparx5->coreclock != SPX5_CORE_CLOCK_250MHZ)
freq = 0; /* Not supported */
break;
case SPX5_TARGET_CT_7549:
case SPX5_TARGET_CT_7552:
case SPX5_TARGET_CT_7556:
if (sparx5->coreclock == SPX5_CORE_CLOCK_DEFAULT)
freq = SPX5_CORE_CLOCK_500MHZ;
else if (sparx5->coreclock != SPX5_CORE_CLOCK_500MHZ)
freq = 0; /* Not supported */
break;
case SPX5_TARGET_CT_7558:
case SPX5_TARGET_CT_7558TSN:
if (sparx5->coreclock == SPX5_CORE_CLOCK_DEFAULT)
freq = SPX5_CORE_CLOCK_625MHZ;
else if (sparx5->coreclock != SPX5_CORE_CLOCK_625MHZ)
freq = 0; /* Not supported */
break;
case SPX5_TARGET_CT_7546TSN:
if (sparx5->coreclock == SPX5_CORE_CLOCK_DEFAULT)
freq = SPX5_CORE_CLOCK_625MHZ;
break;
case SPX5_TARGET_CT_7549TSN:
case SPX5_TARGET_CT_7552TSN:
case SPX5_TARGET_CT_7556TSN:
if (sparx5->coreclock == SPX5_CORE_CLOCK_DEFAULT)
freq = SPX5_CORE_CLOCK_625MHZ;
else if (sparx5->coreclock == SPX5_CORE_CLOCK_250MHZ)
freq = 0; /* Not supported */
break;
default:
dev_err(sparx5->dev, "Target (%#04x) not supported\n",
sparx5->target_ct);
return -ENODEV;
}
switch (freq) {
case SPX5_CORE_CLOCK_250MHZ:
clk_div = 10;
pol_upd_int = 312;
break;
case SPX5_CORE_CLOCK_500MHZ:
clk_div = 5;
pol_upd_int = 624;
break;
case SPX5_CORE_CLOCK_625MHZ:
clk_div = 4;
pol_upd_int = 780;
break;
default:
dev_err(sparx5->dev, "%d coreclock not supported on (%#04x)\n",
sparx5->coreclock, sparx5->target_ct);
return -EINVAL;
}
/* Update state with chosen frequency */
sparx5->coreclock = freq;
/* Configure the LCPLL */
spx5_rmw(CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_CLK_DIV_SET(clk_div) |
CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_PRE_DIV_SET(0) |
CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_ROT_DIR_SET(0) |
CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_ROT_SEL_SET(0) |
CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_ROT_ENA_SET(0) |
CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_CLK_ENA_SET(1),
CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_CLK_DIV |
CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_PRE_DIV |
CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_ROT_DIR |
CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_ROT_SEL |
CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_ROT_ENA |
CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_CLK_ENA,
sparx5,
CLKGEN_LCPLL1_CORE_CLK_CFG);
clk_period = sparx5_clk_period(freq);
spx5_rmw(HSCH_SYS_CLK_PER_SYS_CLK_PER_100PS_SET(clk_period / 100),
HSCH_SYS_CLK_PER_SYS_CLK_PER_100PS,
sparx5,
HSCH_SYS_CLK_PER);
spx5_rmw(ANA_AC_POL_BDLB_DLB_CTRL_CLK_PERIOD_01NS_SET(clk_period / 100),
ANA_AC_POL_BDLB_DLB_CTRL_CLK_PERIOD_01NS,
sparx5,
ANA_AC_POL_BDLB_DLB_CTRL);
spx5_rmw(ANA_AC_POL_SLB_DLB_CTRL_CLK_PERIOD_01NS_SET(clk_period / 100),
ANA_AC_POL_SLB_DLB_CTRL_CLK_PERIOD_01NS,
sparx5,
ANA_AC_POL_SLB_DLB_CTRL);
spx5_rmw(LRN_AUTOAGE_CFG_1_CLK_PERIOD_01NS_SET(clk_period / 100),
LRN_AUTOAGE_CFG_1_CLK_PERIOD_01NS,
sparx5,
LRN_AUTOAGE_CFG_1);
for (idx = 0; idx < 3; idx++)
spx5_rmw(GCB_SIO_CLOCK_SYS_CLK_PERIOD_SET(clk_period / 100),
GCB_SIO_CLOCK_SYS_CLK_PERIOD,
sparx5,
GCB_SIO_CLOCK(idx));
spx5_rmw(HSCH_TAS_STATEMACHINE_CFG_REVISIT_DLY_SET
((256 * 1000) / clk_period),
HSCH_TAS_STATEMACHINE_CFG_REVISIT_DLY,
sparx5,
HSCH_TAS_STATEMACHINE_CFG);
spx5_rmw(ANA_AC_POL_POL_UPD_INT_CFG_POL_UPD_INT_SET(pol_upd_int),
ANA_AC_POL_POL_UPD_INT_CFG_POL_UPD_INT,
sparx5,
ANA_AC_POL_POL_UPD_INT_CFG);
return 0;
}
static int sparx5_qlim_set(struct sparx5 *sparx5)
{
u32 res, dp, prio;
for (res = 0; res < 2; res++) {
for (prio = 0; prio < 8; prio++)
spx5_wr(0xFFF, sparx5,
QRES_RES_CFG(prio + 630 + res * 1024));
for (dp = 0; dp < 4; dp++)
spx5_wr(0xFFF, sparx5,
QRES_RES_CFG(dp + 638 + res * 1024));
}
/* Set 80,90,95,100% of memory size for top watermarks */
spx5_wr(QLIM_WM(80), sparx5, XQS_QLIMIT_SHR_QLIM_CFG(0));
spx5_wr(QLIM_WM(90), sparx5, XQS_QLIMIT_SHR_CTOP_CFG(0));
spx5_wr(QLIM_WM(95), sparx5, XQS_QLIMIT_SHR_ATOP_CFG(0));
spx5_wr(QLIM_WM(100), sparx5, XQS_QLIMIT_SHR_TOP_CFG(0));
return 0;
}
/* Some boards needs to map the SGPIO for signal detect explicitly to the
* port module
*/
static void sparx5_board_init(struct sparx5 *sparx5)
{
int idx;
if (!sparx5->sd_sgpio_remapping)
return;
/* Enable SGPIO Signal Detect remapping */
spx5_rmw(GCB_HW_SGPIO_SD_CFG_SD_MAP_SEL,
GCB_HW_SGPIO_SD_CFG_SD_MAP_SEL,
sparx5,
GCB_HW_SGPIO_SD_CFG);
/* Refer to LOS SGPIO */
for (idx = 0; idx < SPX5_PORTS; idx++)
if (sparx5->ports[idx])
if (sparx5->ports[idx]->conf.sd_sgpio != ~0)
spx5_wr(sparx5->ports[idx]->conf.sd_sgpio,
sparx5,
GCB_HW_SGPIO_TO_SD_MAP_CFG(idx));
}
static int sparx5_start(struct sparx5 *sparx5)
{
u8 broadcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
char queue_name[32];
u32 idx;
int err;
/* Setup own UPSIDs */
for (idx = 0; idx < 3; idx++) {
spx5_wr(idx, sparx5, ANA_AC_OWN_UPSID(idx));
spx5_wr(idx, sparx5, ANA_CL_OWN_UPSID(idx));
spx5_wr(idx, sparx5, ANA_L2_OWN_UPSID(idx));
spx5_wr(idx, sparx5, REW_OWN_UPSID(idx));
}
/* Enable CPU ports */
for (idx = SPX5_PORTS; idx < SPX5_PORTS_ALL; idx++)
spx5_rmw(QFWD_SWITCH_PORT_MODE_PORT_ENA_SET(1),
QFWD_SWITCH_PORT_MODE_PORT_ENA,
sparx5,
QFWD_SWITCH_PORT_MODE(idx));
/* Init masks */
sparx5_update_fwd(sparx5);
/* CPU copy CPU pgids */
spx5_wr(ANA_AC_PGID_MISC_CFG_PGID_CPU_COPY_ENA_SET(1),
sparx5, ANA_AC_PGID_MISC_CFG(PGID_CPU));
spx5_wr(ANA_AC_PGID_MISC_CFG_PGID_CPU_COPY_ENA_SET(1),
sparx5, ANA_AC_PGID_MISC_CFG(PGID_BCAST));
/* Recalc injected frame FCS */
for (idx = SPX5_PORT_CPU_0; idx <= SPX5_PORT_CPU_1; idx++)
spx5_rmw(ANA_CL_FILTER_CTRL_FORCE_FCS_UPDATE_ENA_SET(1),
ANA_CL_FILTER_CTRL_FORCE_FCS_UPDATE_ENA,
sparx5, ANA_CL_FILTER_CTRL(idx));
/* Init MAC table, ageing */
sparx5_mact_init(sparx5);
/* Init PGID table arbitrator */
sparx5_pgid_init(sparx5);
/* Setup VLANs */
sparx5_vlan_init(sparx5);
/* Add host mode BC address (points only to CPU) */
sparx5_mact_learn(sparx5, PGID_CPU, broadcast, NULL_VID);
/* Enable queue limitation watermarks */
sparx5_qlim_set(sparx5);
err = sparx5_config_auto_calendar(sparx5);
if (err)
return err;
err = sparx5_config_dsm_calendar(sparx5);
if (err)
return err;
/* Init stats */
err = sparx_stats_init(sparx5);
if (err)
return err;
/* Init mact_sw struct */
mutex_init(&sparx5->mact_lock);
INIT_LIST_HEAD(&sparx5->mact_entries);
snprintf(queue_name, sizeof(queue_name), "%s-mact",
dev_name(sparx5->dev));
sparx5->mact_queue = create_singlethread_workqueue(queue_name);
if (!sparx5->mact_queue)
return -ENOMEM;
INIT_DELAYED_WORK(&sparx5->mact_work, sparx5_mact_pull_work);
queue_delayed_work(sparx5->mact_queue, &sparx5->mact_work,
SPX5_MACT_PULL_DELAY);
mutex_init(&sparx5->mdb_lock);
INIT_LIST_HEAD(&sparx5->mdb_entries);
err = sparx5_register_netdevs(sparx5);
if (err)
return err;
sparx5_board_init(sparx5);
err = sparx5_register_notifier_blocks(sparx5);
/* Start Frame DMA with fallback to register based INJ/XTR */
err = -ENXIO;
if (sparx5->fdma_irq >= 0) {
if (GCB_CHIP_ID_REV_ID_GET(sparx5->chip_id) > 0)
err = devm_request_threaded_irq(sparx5->dev,
sparx5->fdma_irq,
NULL,
sparx5_fdma_handler,
IRQF_ONESHOT,
"sparx5-fdma", sparx5);
if (!err)
err = sparx5_fdma_start(sparx5);
if (err)
sparx5->fdma_irq = -ENXIO;
} else {
sparx5->fdma_irq = -ENXIO;
}
if (err && sparx5->xtr_irq >= 0) {
err = devm_request_irq(sparx5->dev, sparx5->xtr_irq,
sparx5_xtr_handler, IRQF_SHARED,
"sparx5-xtr", sparx5);
if (!err)
err = sparx5_manual_injection_mode(sparx5);
if (err)
sparx5->xtr_irq = -ENXIO;
} else {
sparx5->xtr_irq = -ENXIO;
}
if (sparx5->ptp_irq >= 0) {
err = devm_request_threaded_irq(sparx5->dev, sparx5->ptp_irq,
NULL, sparx5_ptp_irq_handler,
IRQF_ONESHOT, "sparx5-ptp",
sparx5);
if (err)
sparx5->ptp_irq = -ENXIO;
sparx5->ptp = 1;
}
return err;
}
static void sparx5_cleanup_ports(struct sparx5 *sparx5)
{
sparx5_unregister_netdevs(sparx5);
sparx5_destroy_netdevs(sparx5);
}
static int mchp_sparx5_probe(struct platform_device *pdev)
{
struct initial_port_config *configs, *config;
struct device_node *np = pdev->dev.of_node;
struct device_node *ports, *portnp;
struct reset_control *reset;
struct sparx5 *sparx5;
int idx = 0, err = 0;
if (!np && !pdev->dev.platform_data)
return -ENODEV;
sparx5 = devm_kzalloc(&pdev->dev, sizeof(*sparx5), GFP_KERNEL);
if (!sparx5)
return -ENOMEM;
platform_set_drvdata(pdev, sparx5);
sparx5->pdev = pdev;
sparx5->dev = &pdev->dev;
/* Do switch core reset if available */
reset = devm_reset_control_get_optional_shared(&pdev->dev, "switch");
if (IS_ERR(reset))
return dev_err_probe(&pdev->dev, PTR_ERR(reset),
"Failed to get switch reset controller.\n");
reset_control_reset(reset);
/* Default values, some from DT */
sparx5->coreclock = SPX5_CORE_CLOCK_DEFAULT;
ports = of_get_child_by_name(np, "ethernet-ports");
if (!ports) {
dev_err(sparx5->dev, "no ethernet-ports child node found\n");
return -ENODEV;
}
sparx5->port_count = of_get_child_count(ports);
configs = kcalloc(sparx5->port_count,
sizeof(struct initial_port_config), GFP_KERNEL);
if (!configs) {
err = -ENOMEM;
goto cleanup_pnode;
}
for_each_available_child_of_node(ports, portnp) {
struct sparx5_port_config *conf;
struct phy *serdes;
u32 portno;
err = of_property_read_u32(portnp, "reg", &portno);
if (err) {
dev_err(sparx5->dev, "port reg property error\n");
continue;
}
config = &configs[idx];
conf = &config->conf;
conf->speed = SPEED_UNKNOWN;
conf->bandwidth = SPEED_UNKNOWN;
err = of_get_phy_mode(portnp, &conf->phy_mode);
if (err) {
dev_err(sparx5->dev, "port %u: missing phy-mode\n",
portno);
continue;
}
err = of_property_read_u32(portnp, "microchip,bandwidth",
&conf->bandwidth);
if (err) {
dev_err(sparx5->dev, "port %u: missing bandwidth\n",
portno);
continue;
}
err = of_property_read_u32(portnp, "microchip,sd-sgpio", &conf->sd_sgpio);
if (err)
conf->sd_sgpio = ~0;
else
sparx5->sd_sgpio_remapping = true;
serdes = devm_of_phy_get(sparx5->dev, portnp, NULL);
if (IS_ERR(serdes)) {
err = dev_err_probe(sparx5->dev, PTR_ERR(serdes),
"port %u: missing serdes\n",
portno);
of_node_put(portnp);
goto cleanup_config;
}
config->portno = portno;
config->node = portnp;
config->serdes = serdes;
conf->media = PHY_MEDIA_DAC;
conf->serdes_reset = true;
conf->portmode = conf->phy_mode;
conf->power_down = true;
idx++;
}
err = sparx5_create_targets(sparx5);
if (err)
goto cleanup_config;
if (of_get_mac_address(np, sparx5->base_mac)) {
dev_info(sparx5->dev, "MAC addr was not set, use random MAC\n");
eth_random_addr(sparx5->base_mac);
sparx5->base_mac[5] = 0;
}
sparx5->fdma_irq = platform_get_irq_byname(sparx5->pdev, "fdma");
sparx5->xtr_irq = platform_get_irq_byname(sparx5->pdev, "xtr");
sparx5->ptp_irq = platform_get_irq_byname(sparx5->pdev, "ptp");
/* Read chip ID to check CPU interface */
sparx5->chip_id = spx5_rd(sparx5, GCB_CHIP_ID);
sparx5->target_ct = (enum spx5_target_chiptype)
GCB_CHIP_ID_PART_ID_GET(sparx5->chip_id);
/* Initialize Switchcore and internal RAMs */
err = sparx5_init_switchcore(sparx5);
if (err) {
dev_err(sparx5->dev, "Switchcore initialization error\n");
goto cleanup_config;
}
/* Initialize the LC-PLL (core clock) and set affected registers */
err = sparx5_init_coreclock(sparx5);
if (err) {
dev_err(sparx5->dev, "LC-PLL initialization error\n");
goto cleanup_config;
}
for (idx = 0; idx < sparx5->port_count; ++idx) {
config = &configs[idx];
if (!config->node)
continue;
err = sparx5_create_port(sparx5, config);
if (err) {
dev_err(sparx5->dev, "port create error\n");
goto cleanup_ports;
}
}
err = sparx5_start(sparx5);
if (err) {
dev_err(sparx5->dev, "Start failed\n");
goto cleanup_ports;
}
err = sparx5_qos_init(sparx5);
if (err) {
dev_err(sparx5->dev, "Failed to initialize QoS\n");
goto cleanup_ports;
}
err = sparx5_ptp_init(sparx5);
if (err) {
dev_err(sparx5->dev, "PTP failed\n");
goto cleanup_ports;
}
goto cleanup_config;
cleanup_ports:
sparx5_cleanup_ports(sparx5);
if (sparx5->mact_queue)
destroy_workqueue(sparx5->mact_queue);
cleanup_config:
kfree(configs);
cleanup_pnode:
of_node_put(ports);
return err;
}
static int mchp_sparx5_remove(struct platform_device *pdev)
{
struct sparx5 *sparx5 = platform_get_drvdata(pdev);
if (sparx5->xtr_irq) {
disable_irq(sparx5->xtr_irq);
sparx5->xtr_irq = -ENXIO;
}
if (sparx5->fdma_irq) {
disable_irq(sparx5->fdma_irq);
sparx5->fdma_irq = -ENXIO;
}
sparx5_ptp_deinit(sparx5);
sparx5_fdma_stop(sparx5);
sparx5_cleanup_ports(sparx5);
/* Unregister netdevs */
sparx5_unregister_notifier_blocks(sparx5);
destroy_workqueue(sparx5->mact_queue);
return 0;
}
static const struct of_device_id mchp_sparx5_match[] = {
{ .compatible = "microchip,sparx5-switch" },
{ }
};
MODULE_DEVICE_TABLE(of, mchp_sparx5_match);
static struct platform_driver mchp_sparx5_driver = {
.probe = mchp_sparx5_probe,
.remove = mchp_sparx5_remove,
.driver = {
.name = "sparx5-switch",
.of_match_table = mchp_sparx5_match,
},
};
module_platform_driver(mchp_sparx5_driver);
MODULE_DESCRIPTION("Microchip Sparx5 switch driver");
MODULE_AUTHOR("Steen Hegelund <steen.hegelund@microchip.com>");
MODULE_LICENSE("Dual MIT/GPL");