ipmi_si: Move hardcode handling to a separate file.

Signed-off-by: Corey Minyard <cminyard@mvista.com>

1 files changed, 146 insertions, 0 deletions

diff --git a/drivers/char/ipmi/ipmi_si_hardcode.c b/drivers/char/ipmi/ipmi_si_hardcode.c
new file mode 100644
index 000000000000..fa9a4780de36
--- /dev/null
+++ b/drivers/char/ipmi/ipmi_si_hardcode.c
@@ -0,0 +1,146 @@
+
+#include <linux/moduleparam.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
+
+static char          *si_type[SI_MAX_PARMS];
+#define MAX_SI_TYPE_STR 30
+static char          si_type_str[MAX_SI_TYPE_STR];
+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];
+static unsigned int num_irqs;
+static int           regspacings[SI_MAX_PARMS];
+static unsigned int num_regspacings;
+static int           regsizes[SI_MAX_PARMS];
+static unsigned int num_regsizes;
+static int           regshifts[SI_MAX_PARMS];
+static unsigned int num_regshifts;
+static int slave_addrs[SI_MAX_PARMS]; /* Leaving 0 chooses the default value */
+static unsigned int num_slave_addrs;
+
+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.");
+
+int ipmi_si_hardcode_find_bmc(void)
+{
+	int ret = -ENODEV;
+	int             i;
+	struct si_sm_io io;
+	char *str;
+
+	/* 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;
+			}
+		}
+	}
+
+	memset(&io, 0, sizeof(io));
+	for (i = 0; i < SI_MAX_PARMS; i++) {
+		if (!ports[i] && !addrs[i])
+			continue;
+
+		io.addr_source = SI_HARDCODED;
+		pr_info(PFX "probing via hardcoded address\n");
+
+		if (!si_type[i] || strcmp(si_type[i], "kcs") == 0) {
+			io.si_type = SI_KCS;
+		} else if (strcmp(si_type[i], "smic") == 0) {
+			io.si_type = SI_SMIC;
+		} else if (strcmp(si_type[i], "bt") == 0) {
+			io.si_type = SI_BT;
+		} else {
+			pr_warn(PFX "Interface type specified for interface %d, was invalid: %s\n",
+				i, si_type[i]);
+			continue;
+		}
+
+		if (ports[i]) {
+			/* An I/O port */
+			io.addr_data = ports[i];
+			io.addr_type = IPMI_IO_ADDR_SPACE;
+		} else if (addrs[i]) {
+			/* A memory port */
+			io.addr_data = addrs[i];
+			io.addr_type = IPMI_MEM_ADDR_SPACE;
+		} else {
+			pr_warn(PFX "Interface type specified for interface %d, but port and address were not set or set to zero.\n",
+				i);
+			continue;
+		}
+
+		io.addr = NULL;
+		io.regspacing = regspacings[i];
+		if (!io.regspacing)
+			io.regspacing = DEFAULT_REGSPACING;
+		io.regsize = regsizes[i];
+		if (!io.regsize)
+			io.regsize = DEFAULT_REGSIZE;
+		io.regshift = regshifts[i];
+		io.irq = irqs[i];
+		if (io.irq)
+			io.irq_setup = ipmi_std_irq_setup;
+		io.slave_addr = slave_addrs[i];
+
+		ret = ipmi_si_add_smi(&io);
+	}
+	return ret;
+}