262 lines
7.3 KiB
C
262 lines
7.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/platform_device.h>
|
|
#include "ipmi_si.h"
|
|
|
|
#define PFX "ipmi_hardcode: "
|
|
/*
|
|
* There can be 4 IO ports passed in (with or without IRQs), 4 addresses,
|
|
* a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS.
|
|
*/
|
|
|
|
#define SI_MAX_PARMS 4
|
|
|
|
#define MAX_SI_TYPE_STR 30
|
|
static char si_type_str[MAX_SI_TYPE_STR] __initdata;
|
|
static unsigned long addrs[SI_MAX_PARMS];
|
|
static unsigned int num_addrs;
|
|
static unsigned int ports[SI_MAX_PARMS];
|
|
static unsigned int num_ports;
|
|
static int irqs[SI_MAX_PARMS] __initdata;
|
|
static unsigned int num_irqs __initdata;
|
|
static int regspacings[SI_MAX_PARMS] __initdata;
|
|
static unsigned int num_regspacings __initdata;
|
|
static int regsizes[SI_MAX_PARMS] __initdata;
|
|
static unsigned int num_regsizes __initdata;
|
|
static int regshifts[SI_MAX_PARMS] __initdata;
|
|
static unsigned int num_regshifts __initdata;
|
|
static int slave_addrs[SI_MAX_PARMS] __initdata;
|
|
static unsigned int num_slave_addrs __initdata;
|
|
|
|
module_param_string(type, si_type_str, MAX_SI_TYPE_STR, 0);
|
|
MODULE_PARM_DESC(type, "Defines the type of each interface, each"
|
|
" interface separated by commas. The types are 'kcs',"
|
|
" 'smic', and 'bt'. For example si_type=kcs,bt will set"
|
|
" the first interface to kcs and the second to bt");
|
|
module_param_hw_array(addrs, ulong, iomem, &num_addrs, 0);
|
|
MODULE_PARM_DESC(addrs, "Sets the memory address of each interface, the"
|
|
" addresses separated by commas. Only use if an interface"
|
|
" is in memory. Otherwise, set it to zero or leave"
|
|
" it blank.");
|
|
module_param_hw_array(ports, uint, ioport, &num_ports, 0);
|
|
MODULE_PARM_DESC(ports, "Sets the port address of each interface, the"
|
|
" addresses separated by commas. Only use if an interface"
|
|
" is a port. Otherwise, set it to zero or leave"
|
|
" it blank.");
|
|
module_param_hw_array(irqs, int, irq, &num_irqs, 0);
|
|
MODULE_PARM_DESC(irqs, "Sets the interrupt of each interface, the"
|
|
" addresses separated by commas. Only use if an interface"
|
|
" has an interrupt. Otherwise, set it to zero or leave"
|
|
" it blank.");
|
|
module_param_hw_array(regspacings, int, other, &num_regspacings, 0);
|
|
MODULE_PARM_DESC(regspacings, "The number of bytes between the start address"
|
|
" and each successive register used by the interface. For"
|
|
" instance, if the start address is 0xca2 and the spacing"
|
|
" is 2, then the second address is at 0xca4. Defaults"
|
|
" to 1.");
|
|
module_param_hw_array(regsizes, int, other, &num_regsizes, 0);
|
|
MODULE_PARM_DESC(regsizes, "The size of the specific IPMI register in bytes."
|
|
" This should generally be 1, 2, 4, or 8 for an 8-bit,"
|
|
" 16-bit, 32-bit, or 64-bit register. Use this if you"
|
|
" the 8-bit IPMI register has to be read from a larger"
|
|
" register.");
|
|
module_param_hw_array(regshifts, int, other, &num_regshifts, 0);
|
|
MODULE_PARM_DESC(regshifts, "The amount to shift the data read from the."
|
|
" IPMI register, in bits. For instance, if the data"
|
|
" is read from a 32-bit word and the IPMI data is in"
|
|
" bit 8-15, then the shift would be 8");
|
|
module_param_hw_array(slave_addrs, int, other, &num_slave_addrs, 0);
|
|
MODULE_PARM_DESC(slave_addrs, "Set the default IPMB slave address for"
|
|
" the controller. Normally this is 0x20, but can be"
|
|
" overridden by this parm. This is an array indexed"
|
|
" by interface number.");
|
|
|
|
static struct platform_device *ipmi_hc_pdevs[SI_MAX_PARMS];
|
|
|
|
static void __init ipmi_hardcode_init_one(const char *si_type_str,
|
|
unsigned int i,
|
|
unsigned long addr,
|
|
unsigned int flags)
|
|
{
|
|
struct platform_device *pdev;
|
|
unsigned int num_r = 1, size;
|
|
struct resource r[4];
|
|
struct property_entry p[6];
|
|
enum si_type si_type;
|
|
unsigned int regspacing, regsize;
|
|
int rv;
|
|
|
|
memset(p, 0, sizeof(p));
|
|
memset(r, 0, sizeof(r));
|
|
|
|
if (!si_type_str || !*si_type_str || strcmp(si_type_str, "kcs") == 0) {
|
|
size = 2;
|
|
si_type = SI_KCS;
|
|
} else if (strcmp(si_type_str, "smic") == 0) {
|
|
size = 2;
|
|
si_type = SI_SMIC;
|
|
} else if (strcmp(si_type_str, "bt") == 0) {
|
|
size = 3;
|
|
si_type = SI_BT;
|
|
} else if (strcmp(si_type_str, "invalid") == 0) {
|
|
/*
|
|
* Allow a firmware-specified interface to be
|
|
* disabled.
|
|
*/
|
|
size = 1;
|
|
si_type = SI_TYPE_INVALID;
|
|
} else {
|
|
pr_warn("Interface type specified for interface %d, was invalid: %s\n",
|
|
i, si_type_str);
|
|
return;
|
|
}
|
|
|
|
regsize = regsizes[i];
|
|
if (regsize == 0)
|
|
regsize = DEFAULT_REGSIZE;
|
|
|
|
p[0] = PROPERTY_ENTRY_U8("ipmi-type", si_type);
|
|
p[1] = PROPERTY_ENTRY_U8("slave-addr", slave_addrs[i]);
|
|
p[2] = PROPERTY_ENTRY_U8("addr-source", SI_HARDCODED);
|
|
p[3] = PROPERTY_ENTRY_U8("reg-shift", regshifts[i]);
|
|
p[4] = PROPERTY_ENTRY_U8("reg-size", regsize);
|
|
/* Last entry must be left NULL to terminate it. */
|
|
|
|
/*
|
|
* Register spacing is derived from the resources in
|
|
* the IPMI platform code.
|
|
*/
|
|
regspacing = regspacings[i];
|
|
if (regspacing == 0)
|
|
regspacing = regsize;
|
|
|
|
r[0].start = addr;
|
|
r[0].end = r[0].start + regsize - 1;
|
|
r[0].name = "IPMI Address 1";
|
|
r[0].flags = flags;
|
|
|
|
if (size > 1) {
|
|
r[1].start = r[0].start + regspacing;
|
|
r[1].end = r[1].start + regsize - 1;
|
|
r[1].name = "IPMI Address 2";
|
|
r[1].flags = flags;
|
|
num_r++;
|
|
}
|
|
|
|
if (size > 2) {
|
|
r[2].start = r[1].start + regspacing;
|
|
r[2].end = r[2].start + regsize - 1;
|
|
r[2].name = "IPMI Address 3";
|
|
r[2].flags = flags;
|
|
num_r++;
|
|
}
|
|
|
|
if (irqs[i]) {
|
|
r[num_r].start = irqs[i];
|
|
r[num_r].end = irqs[i];
|
|
r[num_r].name = "IPMI IRQ";
|
|
r[num_r].flags = IORESOURCE_IRQ;
|
|
num_r++;
|
|
}
|
|
|
|
pdev = platform_device_alloc("hardcode-ipmi-si", i);
|
|
if (!pdev) {
|
|
pr_err("Error allocating IPMI platform device %d\n", i);
|
|
return;
|
|
}
|
|
|
|
rv = platform_device_add_resources(pdev, r, num_r);
|
|
if (rv) {
|
|
dev_err(&pdev->dev,
|
|
"Unable to add hard-code resources: %d\n", rv);
|
|
goto err;
|
|
}
|
|
|
|
rv = platform_device_add_properties(pdev, p);
|
|
if (rv) {
|
|
dev_err(&pdev->dev,
|
|
"Unable to add hard-code properties: %d\n", rv);
|
|
goto err;
|
|
}
|
|
|
|
rv = platform_device_add(pdev);
|
|
if (rv) {
|
|
dev_err(&pdev->dev,
|
|
"Unable to add hard-code device: %d\n", rv);
|
|
goto err;
|
|
}
|
|
|
|
ipmi_hc_pdevs[i] = pdev;
|
|
return;
|
|
|
|
err:
|
|
platform_device_put(pdev);
|
|
}
|
|
|
|
void __init ipmi_hardcode_init(void)
|
|
{
|
|
unsigned int i;
|
|
char *str;
|
|
char *si_type[SI_MAX_PARMS];
|
|
|
|
memset(si_type, 0, sizeof(si_type));
|
|
|
|
/* Parse out the si_type string into its components. */
|
|
str = si_type_str;
|
|
if (*str != '\0') {
|
|
for (i = 0; (i < SI_MAX_PARMS) && (*str != '\0'); i++) {
|
|
si_type[i] = str;
|
|
str = strchr(str, ',');
|
|
if (str) {
|
|
*str = '\0';
|
|
str++;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < SI_MAX_PARMS; i++) {
|
|
if (i < num_ports && ports[i])
|
|
ipmi_hardcode_init_one(si_type[i], i, ports[i],
|
|
IORESOURCE_IO);
|
|
if (i < num_addrs && addrs[i])
|
|
ipmi_hardcode_init_one(si_type[i], i, addrs[i],
|
|
IORESOURCE_MEM);
|
|
}
|
|
}
|
|
|
|
void ipmi_si_hardcode_exit(void)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < SI_MAX_PARMS; i++) {
|
|
if (ipmi_hc_pdevs[i])
|
|
platform_device_unregister(ipmi_hc_pdevs[i]);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Returns true of the given address exists as a hardcoded address,
|
|
* false if not.
|
|
*/
|
|
int ipmi_si_hardcode_match(int addr_type, unsigned long addr)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (addr_type == IPMI_IO_ADDR_SPACE) {
|
|
for (i = 0; i < num_ports; i++) {
|
|
if (ports[i] == addr)
|
|
return 1;
|
|
}
|
|
} else {
|
|
for (i = 0; i < num_addrs; i++) {
|
|
if (addrs[i] == addr)
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|