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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sunddi.h>
#include <sys/sunndi.h>
#include <sys/modctl.h>
#include <sys/sysmacros.h>
#include <sys/platform_module.h>
#include <sys/errno.h>
/*
* This platmod is used by both SUNW,Sun-Fire-280R (a.k.a littleneck) and
* SUNW,Netra-T4 (a.k.a. lw2plus) platforms.
*/
#define LITTLENECK_NVRAM_PATH "/pci@8,700000/ebus@5/i2c@1,2e/nvram@0,a0"
#define LW2PLUS_NVRAM_PATH "/pci@8,700000/ebus@5/i2c@1,30/nvram@0,e0"
static dev_info_t *shared_pcf8584_dip = NULL;
static kmutex_t lneck_pcf8584_mutex;
int (*p2get_mem_unum)(int, uint64_t, char *, int, int *);
void
startup_platform(void)
{
mutex_init(&lneck_pcf8584_mutex, NULL, MUTEX_ADAPTIVE, NULL);
}
int
set_platform_tsb_spares()
{
return (0);
}
void
set_platform_defaults(void)
{
}
void
load_platform_drivers(void)
{
char **drv;
dev_info_t *nvram_dip;
static char *boot_time_drivers[] = {
"todds1287",
"pcf8574",
"mc-us3",
NULL
};
for (drv = boot_time_drivers; *drv; drv++) {
if (i_ddi_attach_hw_nodes(*drv) != DDI_SUCCESS)
cmn_err(CE_WARN, "Failed to install \"%s\" driver.",
*drv);
}
/* hold modules for keyswitch polling and plat_get_mem_unum() */
(void) ddi_hold_driver(ddi_name_to_major("pcf8574"));
(void) ddi_hold_driver(ddi_name_to_major("mc-us3"));
/*
* For littleneck we figure out which pcf8584 dip is shared with
* OBP for the nvram device, so the lock can be acquired.
* If this fails see if we're running on a Netra 20.
* The Netra 20 nvram node is the SCC and is also shared by
* Solaris and OBP.
*/
nvram_dip = e_ddi_hold_devi_by_path(LITTLENECK_NVRAM_PATH, 0);
if (nvram_dip == NULL)
nvram_dip = e_ddi_hold_devi_by_path(LW2PLUS_NVRAM_PATH, 0);
if (nvram_dip == NULL)
cmn_err(CE_WARN, "Failed to hold pcf8584");
else {
shared_pcf8584_dip = ddi_get_parent(nvram_dip);
ndi_hold_devi(shared_pcf8584_dip);
ndi_rele_devi(nvram_dip);
}
}
/*ARGSUSED*/
int
plat_cpu_poweron(struct cpu *cp)
{
return (ENOTSUP); /* not supported on this platform */
}
/*ARGSUSED*/
int
plat_cpu_poweroff(struct cpu *cp)
{
return (ENOTSUP); /* not supported on this platform */
}
/*ARGSUSED*/
void
plat_freelist_process(int mnode)
{
}
/*
* No platform drivers on this platform
*/
char *platform_module_list[] = {
(char *)0
};
/*ARGSUSED*/
void
plat_tod_fault(enum tod_fault_type tod_bad)
{
}
/*ARGSUSED*/
int
plat_get_mem_unum(int synd_code, uint64_t flt_addr, int flt_bus_id,
int flt_in_memory, ushort_t flt_status, char *buf, int buflen, int *lenp)
{
if (flt_in_memory && (p2get_mem_unum != NULL))
return (p2get_mem_unum(synd_code, P2ALIGN(flt_addr, 8),
buf, buflen, lenp));
else
return (ENOTSUP);
}
int
plat_get_cpu_unum(int cpuid, char *buf, int buflen, int *lenp)
{
if (snprintf(buf, buflen, "Slot %d", cpuid) >= buflen) {
return (ENOSPC);
} else {
*lenp = strlen(buf);
return (0);
}
}
/*
* Littleneck's BBC pcf8584 controller is used by both OBP and the OS's i2c
* drivers. The 'eeprom' command executes OBP code to handle property requests.
* If eeprom didn't do this, or if the controllers were partitioned so that all
* devices on a given controller were driven by either OBP or the OS, this
* wouldn't be necessary.
*
* Note that getprop doesn't have the same issue as it reads from cached
* memory in OBP.
*/
/*
* Common locking enter code
*/
void
plat_setprop_enter(void)
{
mutex_enter(&lneck_pcf8584_mutex);
}
/*
* Common locking exit code
*/
void
plat_setprop_exit(void)
{
mutex_exit(&lneck_pcf8584_mutex);
}
/*
* Called by pcf8584 driver
*/
void
plat_shared_i2c_enter(dev_info_t *i2cnexus_dip)
{
if (i2cnexus_dip == shared_pcf8584_dip) {
plat_setprop_enter();
}
}
/*
* Called by pcf8584 driver
*/
void
plat_shared_i2c_exit(dev_info_t *i2cnexus_dip)
{
if (i2cnexus_dip == shared_pcf8584_dip) {
plat_setprop_exit();
}
}
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