From 73a17263fcee89fbd473f928ebdb56a1fb26a3cb Mon Sep 17 00:00:00 2001 From: Joursoir Date: Fri, 23 Feb 2024 20:46:15 +0300 Subject: initial commit for v3.8.7 --- src/param.c | 600 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 600 insertions(+) create mode 100644 src/param.c (limited to 'src/param.c') diff --git a/src/param.c b/src/param.c new file mode 100644 index 0000000..9343178 --- /dev/null +++ b/src/param.c @@ -0,0 +1,600 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 1999 - 2020 Intel Corporation. */ + +#include +#include +#include + +#include "e1000.h" + +/* This is the only thing that needs to be changed to adjust the + * maximum number of ports that the driver can manage. + */ +#define E1000_MAX_NIC 32 + +#define OPTION_UNSET -1 +#define OPTION_DISABLED 0 +#define OPTION_ENABLED 1 + +#define COPYBREAK_DEFAULT 256 +unsigned int copybreak = COPYBREAK_DEFAULT; +module_param(copybreak, uint, 0644); +MODULE_PARM_DESC(copybreak, + "Maximum size of packet that is copied to a new buffer on receive"); + +/* All parameters are treated the same, as an integer array of values. + * This macro just reduces the need to repeat the same declaration code + * over and over (plus this helps to avoid typo bugs). + */ +#define E1000_PARAM_INIT { [0 ... E1000_MAX_NIC] = OPTION_UNSET } +#ifndef module_param_array +/* Module Parameters are always initialized to -1, so that the driver + * can tell the difference between no user specified value or the + * user asking for the default value. + * The true default values are loaded in when e1000e_check_options is called. + * + * This is a GCC extension to ANSI C. + * See the item "Labeled Elements in Initializers" in the section + * "Extensions to the C Language Family" of the GCC documentation. + */ +#define E1000_PARAM(X, desc) \ + static const int X[E1000_MAX_NIC+1] __devinitconst = E1000_PARAM_INIT; \ + static unsigned int num_##X; \ + MODULE_PARM(X, "1-" __MODULE_STRING(E1000_MAX_NIC) "i"); \ + MODULE_PARM_DESC(X, desc); +#elif defined(HAVE_CONFIG_HOTPLUG) +#define E1000_PARAM(X, desc) \ + static int X[E1000_MAX_NIC+1] __devinitdata \ + = E1000_PARAM_INIT; \ + static unsigned int num_##X; \ + module_param_array_named(X, X, int, &num_##X, 0); \ + MODULE_PARM_DESC(X, desc); +#else +#define E1000_PARAM(X, desc) \ + static int X[E1000_MAX_NIC+1] = E1000_PARAM_INIT; \ + static unsigned int num_##X; \ + module_param_array_named(X, X, int, &num_##X, 0); \ + MODULE_PARM_DESC(X, desc); +#endif + +/* Transmit Interrupt Delay in units of 1.024 microseconds + * Tx interrupt delay needs to typically be set to something non-zero + * + * Valid Range: 0-65535 + */ +E1000_PARAM(TxIntDelay, "Transmit Interrupt Delay"); +#define DEFAULT_TIDV 8 +#define MAX_TXDELAY 0xFFFF +#define MIN_TXDELAY 0 + +/* Transmit Absolute Interrupt Delay in units of 1.024 microseconds + * + * Valid Range: 0-65535 + */ +E1000_PARAM(TxAbsIntDelay, "Transmit Absolute Interrupt Delay"); +#define DEFAULT_TADV 32 +#define MAX_TXABSDELAY 0xFFFF +#define MIN_TXABSDELAY 0 + +/* Receive Interrupt Delay in units of 1.024 microseconds + * hardware will likely hang if you set this to anything but zero. + * + * Valid Range: 0-65535 + */ +E1000_PARAM(RxIntDelay, "Receive Interrupt Delay"); +#define MAX_RXDELAY 0xFFFF +#define MIN_RXDELAY 0 + +/* Receive Absolute Interrupt Delay in units of 1.024 microseconds + * + * Valid Range: 0-65535 + */ +E1000_PARAM(RxAbsIntDelay, "Receive Absolute Interrupt Delay"); +#define MAX_RXABSDELAY 0xFFFF +#define MIN_RXABSDELAY 0 + +/* Interrupt Throttle Rate (interrupts/sec) + * + * Valid Range: 100-100000 or one of: 0=off, 1=dynamic, 3=dynamic conservative + */ +E1000_PARAM(InterruptThrottleRate, "Interrupt Throttling Rate"); +#define DEFAULT_ITR 3 +#define MAX_ITR 100000 +#define MIN_ITR 100 + +/* IntMode (Interrupt Mode) + * + * Valid Range: varies depending on kernel configuration & hardware support + * + * legacy=0, MSI=1, MSI-X=2 + * + * When MSI/MSI-X support is enabled in kernel- + * Default Value: 2 (MSI-X) when supported by hardware, 1 (MSI) otherwise + * When MSI/MSI-X support is not enabled in kernel- + * Default Value: 0 (legacy) + * + * When a mode is specified that is not allowed/supported, it will be + * demoted to the most advanced interrupt mode available. + */ +E1000_PARAM(IntMode, "Interrupt Mode"); +#define MAX_INTMODE 2 +#define MIN_INTMODE 0 + +/* Enable Smart Power Down of the PHY + * + * Valid Range: 0, 1 + * + * Default Value: 0 (disabled) + */ +E1000_PARAM(SmartPowerDownEnable, "Enable PHY smart power down"); + +/* Enable Kumeran Lock Loss workaround + * + * Valid Range: 0, 1 + * + * Default Value: 1 (enabled) + */ +E1000_PARAM(KumeranLockLoss, "Enable Kumeran lock loss workaround"); + +/* Enable CRC Stripping + * + * Valid Range: 0, 1 + * + * Default Value: 1 (enabled) + */ +E1000_PARAM(CrcStripping, + "Enable CRC Stripping, disable if your BMC needs the CRC"); + +/* Enable/disable EEE (a.k.a. IEEE802.3az) + * + * Valid Range: 0, 1 + * + * Default Value: 1 + */ +E1000_PARAM(EEE, "Enable/disable on parts that support the feature"); + +/* Enable node specific allocation of all data structures, typically + * specific to routing setups, not generally useful. + * + * Depends on: NUMA configuration + * + * Valid Range: -1, 0-32768 + * + * Default Value: -1 (disabled, default to kernel choice of node) + */ +E1000_PARAM(Node, "[ROUTING] Node to allocate memory on, default -1"); + +struct e1000_option { + enum { enable_option, range_option, list_option } type; + const char *name; + const char *err; + int def; + union { + /* range_option info */ + struct { + int min; + int max; + } r; + /* list_option info */ + struct { + int nr; + struct e1000_opt_list { + int i; + char *str; + } *p; + } l; + } arg; +}; + +#ifdef HAVE_CONFIG_HOTPLUG +static int __devinit e1000_validate_option(unsigned int *value, + const struct e1000_option *opt, + struct e1000_adapter *adapter) +#else +static int e1000_validate_option(unsigned int *value, + const struct e1000_option *opt, + struct e1000_adapter *adapter) +#endif +{ + if (*value == OPTION_UNSET) { + *value = opt->def; + return 0; + } + + switch (opt->type) { + case enable_option: + switch (*value) { + case OPTION_ENABLED: + dev_info(pci_dev_to_dev(adapter->pdev), "%s Enabled\n", + opt->name); + return 0; + case OPTION_DISABLED: + dev_info(pci_dev_to_dev(adapter->pdev), "%s Disabled\n", + opt->name); + return 0; + } + break; + case range_option: + if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) { + dev_info(pci_dev_to_dev(adapter->pdev), + "%s set to %i\n", opt->name, *value); + return 0; + } + break; + case list_option: { + int i; + struct e1000_opt_list *ent; + + for (i = 0; i < opt->arg.l.nr; i++) { + ent = &opt->arg.l.p[i]; + if (*value == ent->i) { + if (ent->str[0] != '\0') + dev_info(pci_dev_to_dev(adapter->pdev), "%s\n", + ent->str); + return 0; + } + } + } + break; + default: + BUG(); + } + + dev_info(pci_dev_to_dev(adapter->pdev), + "Invalid %s value specified (%i) %s\n", opt->name, *value, + opt->err); + *value = opt->def; + return -1; +} + +/** + * e1000e_check_options - Range Checking for Command Line Parameters + * @adapter: board private structure + * + * This routine checks all command line parameters for valid user + * input. If an invalid value is given, or if no user specified + * value exists, a default value is used. The final value is stored + * in a variable in the adapter structure. + **/ +#ifdef HAVE_CONFIG_HOTPLUG +void __devinit e1000e_check_options(struct e1000_adapter *adapter) +#else +void e1000e_check_options(struct e1000_adapter *adapter) +#endif +{ + struct e1000_hw *hw = &adapter->hw; + int bd = adapter->bd_number; + + if (bd >= E1000_MAX_NIC) { + dev_notice(pci_dev_to_dev(adapter->pdev), + "Warning: no configuration for board #%i\n", bd); + dev_notice(pci_dev_to_dev(adapter->pdev), + "Using defaults for all values\n"); + } + + /* Transmit Interrupt Delay */ + { + static const struct e1000_option opt = { + .type = range_option, + .name = "Transmit Interrupt Delay", + .err = "using default of " + __MODULE_STRING(DEFAULT_TIDV), + .def = DEFAULT_TIDV, + .arg = { .r = { .min = MIN_TXDELAY, + .max = MAX_TXDELAY } } + }; + + if (num_TxIntDelay > bd) { + adapter->tx_int_delay = TxIntDelay[bd]; + e1000_validate_option(&adapter->tx_int_delay, &opt, + adapter); + } else { + adapter->tx_int_delay = opt.def; + } + } + /* Transmit Absolute Interrupt Delay */ + { + static const struct e1000_option opt = { + .type = range_option, + .name = "Transmit Absolute Interrupt Delay", + .err = "using default of " + __MODULE_STRING(DEFAULT_TADV), + .def = DEFAULT_TADV, + .arg = { .r = { .min = MIN_TXABSDELAY, + .max = MAX_TXABSDELAY } } + }; + + if (num_TxAbsIntDelay > bd) { + adapter->tx_abs_int_delay = TxAbsIntDelay[bd]; + e1000_validate_option(&adapter->tx_abs_int_delay, &opt, + adapter); + } else { + adapter->tx_abs_int_delay = opt.def; + } + } + /* Receive Interrupt Delay */ + { + static struct e1000_option opt = { + .type = range_option, + .name = "Receive Interrupt Delay", + .err = "using default of " + __MODULE_STRING(DEFAULT_RDTR), + .def = DEFAULT_RDTR, + .arg = { .r = { .min = MIN_RXDELAY, + .max = MAX_RXDELAY } } + }; + + if (num_RxIntDelay > bd) { + adapter->rx_int_delay = RxIntDelay[bd]; + e1000_validate_option(&adapter->rx_int_delay, &opt, + adapter); + } else { + adapter->rx_int_delay = opt.def; + } + } + /* Receive Absolute Interrupt Delay */ + { + static const struct e1000_option opt = { + .type = range_option, + .name = "Receive Absolute Interrupt Delay", + .err = "using default of " + __MODULE_STRING(DEFAULT_RADV), + .def = DEFAULT_RADV, + .arg = { .r = { .min = MIN_RXABSDELAY, + .max = MAX_RXABSDELAY } } + }; + + if (num_RxAbsIntDelay > bd) { + adapter->rx_abs_int_delay = RxAbsIntDelay[bd]; + e1000_validate_option(&adapter->rx_abs_int_delay, &opt, + adapter); + } else { + adapter->rx_abs_int_delay = opt.def; + } + } + /* Interrupt Throttling Rate */ + { + static const struct e1000_option opt = { + .type = range_option, + .name = "Interrupt Throttling Rate (ints/sec)", + .err = "using default of " + __MODULE_STRING(DEFAULT_ITR), + .def = DEFAULT_ITR, + .arg = { .r = { .min = MIN_ITR, + .max = MAX_ITR } } + }; + + if (num_InterruptThrottleRate > bd) { + adapter->itr = InterruptThrottleRate[bd]; + + /* Make sure a message is printed for non-special + * values. And in case of an invalid option, display + * warning, use default and go through itr/itr_setting + * adjustment logic below + */ + if ((adapter->itr > 4) && + e1000_validate_option(&adapter->itr, &opt, adapter)) + adapter->itr = opt.def; + } else { + /* If no option specified, use default value and go + * through the logic below to adjust itr/itr_setting + */ + adapter->itr = opt.def; + + /* Make sure a message is printed for non-special + * default values + */ + if (adapter->itr > 4) + dev_info(pci_dev_to_dev(adapter->pdev), + "%s set to default %d\n", opt.name, + adapter->itr); + } + + adapter->itr_setting = adapter->itr; + switch (adapter->itr) { + case 0: + dev_info(pci_dev_to_dev(adapter->pdev), + "%s turned off\n", opt.name); + break; + case 1: + dev_info(pci_dev_to_dev(adapter->pdev), + "%s set to dynamic mode\n", opt.name); + adapter->itr = 20000; + break; + case 2: + dev_info(pci_dev_to_dev(adapter->pdev), + "%s Invalid mode - setting default\n", + opt.name); + adapter->itr_setting = opt.def; + /* fall-through */ + case 3: + dev_info(pci_dev_to_dev(adapter->pdev), + "%s set to dynamic conservative mode\n", + opt.name); + adapter->itr = 20000; + break; + case 4: + dev_info(pci_dev_to_dev(adapter->pdev), + "%s set to simplified (2000-8000 ints) mode\n", + opt.name); + break; + default: + /* Save the setting, because the dynamic bits + * change itr. + * + * Clear the lower two bits because + * they are used as control. + */ + adapter->itr_setting &= ~3; + break; + } + } + /* Interrupt Mode */ + { + static struct e1000_option opt = { + .type = range_option, + .name = "Interrupt Mode", +#ifndef CONFIG_PCI_MSI + .err = "defaulting to 0 (legacy)", + .def = E1000E_INT_MODE_LEGACY, + .arg = { .r = { .min = 0, + .max = 0 } } +#endif + }; + +#ifdef CONFIG_PCI_MSI + if (adapter->flags & FLAG_HAS_MSIX) { + opt.err = kstrdup("defaulting to 2 (MSI-X)", + GFP_KERNEL); + opt.def = E1000E_INT_MODE_MSIX; + opt.arg.r.max = E1000E_INT_MODE_MSIX; + } else { + opt.err = kstrdup("defaulting to 1 (MSI)", GFP_KERNEL); + opt.def = E1000E_INT_MODE_MSI; + opt.arg.r.max = E1000E_INT_MODE_MSI; + } + + if (!opt.err) { + dev_err(pci_dev_to_dev(adapter->pdev), + "Failed to allocate memory\n"); + return; + } +#endif + + if (num_IntMode > bd) { + unsigned int int_mode = IntMode[bd]; + + e1000_validate_option(&int_mode, &opt, adapter); + adapter->int_mode = int_mode; + } else { + adapter->int_mode = opt.def; + } + +#ifdef CONFIG_PCI_MSI + kfree(opt.err); +#endif + } + /* Smart Power Down */ + { + static const struct e1000_option opt = { + .type = enable_option, + .name = "PHY Smart Power Down", + .err = "defaulting to Disabled", + .def = OPTION_DISABLED + }; + + if (num_SmartPowerDownEnable > bd) { + unsigned int spd = SmartPowerDownEnable[bd]; + + e1000_validate_option(&spd, &opt, adapter); + if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) && spd) + adapter->flags |= FLAG_SMART_POWER_DOWN; + } + } + /* CRC Stripping */ + { + static const struct e1000_option opt = { + .type = enable_option, + .name = "CRC Stripping", + .err = "defaulting to Enabled", + .def = OPTION_ENABLED + }; + + if (num_CrcStripping > bd) { + unsigned int crc_stripping = CrcStripping[bd]; + + e1000_validate_option(&crc_stripping, &opt, adapter); + if (crc_stripping == OPTION_ENABLED) { + adapter->flags2 |= FLAG2_CRC_STRIPPING; + adapter->flags2 |= FLAG2_DFLT_CRC_STRIPPING; + } + } else { + adapter->flags2 |= FLAG2_CRC_STRIPPING; + adapter->flags2 |= FLAG2_DFLT_CRC_STRIPPING; + } + } + /* Kumeran Lock Loss Workaround */ + { + static const struct e1000_option opt = { + .type = enable_option, + .name = "Kumeran Lock Loss Workaround", + .err = "defaulting to Enabled", + .def = OPTION_ENABLED + }; + bool enabled = opt.def; + + if (num_KumeranLockLoss > bd) { + unsigned int kmrn_lock_loss = KumeranLockLoss[bd]; + + e1000_validate_option(&kmrn_lock_loss, &opt, adapter); + enabled = kmrn_lock_loss; + } + + if (hw->mac.type == e1000_ich8lan) + e1000e_set_kmrn_lock_loss_workaround_ich8lan(hw, + enabled); + } + /* EEE for parts supporting the feature */ + { + static const struct e1000_option opt = { + .type = enable_option, + .name = "EEE Support", + .err = "defaulting to Enabled (100T/1000T full)", + .def = OPTION_ENABLED + }; + + if (adapter->flags2 & FLAG2_HAS_EEE) { + /* Currently only supported on 82579 and newer */ + if (num_EEE > bd) { + unsigned int eee = EEE[bd]; + e1000_validate_option(&eee, &opt, adapter); + hw->dev_spec.ich8lan.eee_disable = !eee; + } else { + hw->dev_spec.ich8lan.eee_disable = !opt.def; + } + } + } + /* configure node specific allocation */ + { + static struct e1000_option opt = { + .type = range_option, + .name = "Node used to allocate memory", + .err = "defaulting to -1 (disabled)", +#ifdef HAVE_EARLY_VMALLOC_NODE + .def = 0, +#else + .def = -1, +#endif + .arg = { .r = { .min = 0, + .max = MAX_NUMNODES - 1 } } + }; + int node = opt.def; + + /* if the default was zero then we need to set the + * default value to an online node, which is not + * necessarily zero, and the constant initializer + * above can't take first_online_node + */ + if (node == 0) { + /* must set opt.def for validate */ + node = first_online_node; + opt.def = node; + } + + if (num_Node > bd) { + node = Node[bd]; + e1000_validate_option((unsigned int *)&node, &opt, + adapter); + if (node != OPTION_UNSET) + e_info("node used for allocation: %d\n", node); + } + + /* check sanity of the value */ + if ((node != -1) && !node_online(node)) { + e_info("ignoring node set to invalid value %d\n", node); + node = opt.def; + } + + adapter->node = node; + } +} -- cgit v1.2.3-18-g5258