147 lines
4.9 KiB
C
147 lines
4.9 KiB
C
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#include <linux/moduleparam.h>
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#include "ipmi_si.h"
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#define PFX "ipmi_hardcode: "
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/*
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* There can be 4 IO ports passed in (with or without IRQs), 4 addresses,
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* a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS.
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*/
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#define SI_MAX_PARMS 4
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static char *si_type[SI_MAX_PARMS];
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#define MAX_SI_TYPE_STR 30
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static char si_type_str[MAX_SI_TYPE_STR];
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static unsigned long addrs[SI_MAX_PARMS];
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static unsigned int num_addrs;
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static unsigned int ports[SI_MAX_PARMS];
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static unsigned int num_ports;
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static int irqs[SI_MAX_PARMS];
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static unsigned int num_irqs;
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static int regspacings[SI_MAX_PARMS];
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static unsigned int num_regspacings;
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static int regsizes[SI_MAX_PARMS];
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static unsigned int num_regsizes;
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static int regshifts[SI_MAX_PARMS];
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static unsigned int num_regshifts;
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static int slave_addrs[SI_MAX_PARMS]; /* Leaving 0 chooses the default value */
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static unsigned int num_slave_addrs;
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module_param_string(type, si_type_str, MAX_SI_TYPE_STR, 0);
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MODULE_PARM_DESC(type, "Defines the type of each interface, each"
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" interface separated by commas. The types are 'kcs',"
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" 'smic', and 'bt'. For example si_type=kcs,bt will set"
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" the first interface to kcs and the second to bt");
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module_param_hw_array(addrs, ulong, iomem, &num_addrs, 0);
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MODULE_PARM_DESC(addrs, "Sets the memory address of each interface, the"
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" addresses separated by commas. Only use if an interface"
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" is in memory. Otherwise, set it to zero or leave"
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" it blank.");
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module_param_hw_array(ports, uint, ioport, &num_ports, 0);
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MODULE_PARM_DESC(ports, "Sets the port address of each interface, the"
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" addresses separated by commas. Only use if an interface"
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" is a port. Otherwise, set it to zero or leave"
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" it blank.");
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module_param_hw_array(irqs, int, irq, &num_irqs, 0);
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MODULE_PARM_DESC(irqs, "Sets the interrupt of each interface, the"
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" addresses separated by commas. Only use if an interface"
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" has an interrupt. Otherwise, set it to zero or leave"
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" it blank.");
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module_param_hw_array(regspacings, int, other, &num_regspacings, 0);
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MODULE_PARM_DESC(regspacings, "The number of bytes between the start address"
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" and each successive register used by the interface. For"
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" instance, if the start address is 0xca2 and the spacing"
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" is 2, then the second address is at 0xca4. Defaults"
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" to 1.");
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module_param_hw_array(regsizes, int, other, &num_regsizes, 0);
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MODULE_PARM_DESC(regsizes, "The size of the specific IPMI register in bytes."
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" This should generally be 1, 2, 4, or 8 for an 8-bit,"
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" 16-bit, 32-bit, or 64-bit register. Use this if you"
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" the 8-bit IPMI register has to be read from a larger"
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" register.");
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module_param_hw_array(regshifts, int, other, &num_regshifts, 0);
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MODULE_PARM_DESC(regshifts, "The amount to shift the data read from the."
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" IPMI register, in bits. For instance, if the data"
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" is read from a 32-bit word and the IPMI data is in"
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" bit 8-15, then the shift would be 8");
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module_param_hw_array(slave_addrs, int, other, &num_slave_addrs, 0);
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MODULE_PARM_DESC(slave_addrs, "Set the default IPMB slave address for"
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" the controller. Normally this is 0x20, but can be"
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" overridden by this parm. This is an array indexed"
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" by interface number.");
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int ipmi_si_hardcode_find_bmc(void)
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{
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int ret = -ENODEV;
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int i;
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struct si_sm_io io;
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char *str;
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/* Parse out the si_type string into its components. */
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str = si_type_str;
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if (*str != '\0') {
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for (i = 0; (i < SI_MAX_PARMS) && (*str != '\0'); i++) {
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si_type[i] = str;
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str = strchr(str, ',');
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if (str) {
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*str = '\0';
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str++;
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} else {
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break;
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}
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}
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}
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memset(&io, 0, sizeof(io));
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for (i = 0; i < SI_MAX_PARMS; i++) {
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if (!ports[i] && !addrs[i])
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continue;
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io.addr_source = SI_HARDCODED;
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pr_info(PFX "probing via hardcoded address\n");
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if (!si_type[i] || strcmp(si_type[i], "kcs") == 0) {
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io.si_type = SI_KCS;
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} else if (strcmp(si_type[i], "smic") == 0) {
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io.si_type = SI_SMIC;
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} else if (strcmp(si_type[i], "bt") == 0) {
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io.si_type = SI_BT;
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} else {
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pr_warn(PFX "Interface type specified for interface %d, was invalid: %s\n",
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i, si_type[i]);
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continue;
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}
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if (ports[i]) {
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/* An I/O port */
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io.addr_data = ports[i];
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io.addr_type = IPMI_IO_ADDR_SPACE;
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} else if (addrs[i]) {
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/* A memory port */
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io.addr_data = addrs[i];
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io.addr_type = IPMI_MEM_ADDR_SPACE;
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} else {
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pr_warn(PFX "Interface type specified for interface %d, but port and address were not set or set to zero.\n",
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i);
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continue;
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}
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io.addr = NULL;
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io.regspacing = regspacings[i];
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if (!io.regspacing)
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io.regspacing = DEFAULT_REGSPACING;
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io.regsize = regsizes[i];
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if (!io.regsize)
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io.regsize = DEFAULT_REGSIZE;
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io.regshift = regshifts[i];
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io.irq = irqs[i];
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if (io.irq)
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io.irq_setup = ipmi_std_irq_setup;
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io.slave_addr = slave_addrs[i];
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ret = ipmi_si_add_smi(&io);
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}
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return ret;
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}
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