NetBSD-5.0.2/sys/arch/arm/omap/omap2_l3i.c
/* $Id: omap2_l3i.c,v 1.4 2008/08/27 11:03:10 matt Exp $ */
/* adapted from: */
/* $NetBSD: omap2_l3i.c,v 1.4 2008/08/27 11:03:10 matt Exp $ */
/*
* Autoconfiguration support for the Texas Instruments OMAP "On Board" I/O.
*
* Based on arm/omap/omap_emifs.c which in turn was derived
* Based on arm/xscale/pxa2x0.c which in turn was derived
* from arm/sa11x0/sa11x0.c
*
* Copyright (c) 2002, 2005 Genetec Corporation. All rights reserved.
* Written by Hiroyuki Bessho for Genetec Corporation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Genetec Corporation.
* 4. The name of Genetec Corporation may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Copyright (c) 1997, 1998, 2001, The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by IWAMOTO Toshihiro, Ichiro FUKUHARA and Paul Kranenburg.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Copyright (c) 1999
* Shin Takemura and PocketBSD Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the PocketBSD project
* and its contributors.
* 4. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "opt_omap.h"
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: omap2_l3i.c,v 1.4 2008/08/27 11:03:10 matt Exp $");
#include "locators.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/reboot.h>
#include <machine/cpu.h>
#include <machine/bus.h>
#include <arm/cpufunc.h>
#include <arm/mainbus/mainbus.h>
#include <arm/omap/omap_var.h>
#if defined(OMAP2) || defined(OMAP3)
#include <arm/omap/omap2_reg.h>
#ifdef NOTYET
#include <arm/omap/omap2_var.h>
#endif
#else
/*
* we have only used this with OMAP 2430 so far....
* some of the 2430 stuff may generalize to other OMAP implementations,
* or not. Either generalize the include files accordingly, or
* add your own implementation-specific includes.
*/
# error unknown OMAP L3 Interconnect implementation
#endif
struct L3i_softc {
struct device sc_dev;
bus_dma_tag_t sc_dmac;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
};
/* prototypes */
static int L3i_match(struct device *, struct cfdata *, void *);
static void L3i_attach(struct device *, struct device *, void *);
void L3i_target_agent_check(struct L3i_softc *, bus_addr_t, char *);
static void L3i_decode_ta_COMPONENT(uint32_t);
static void L3i_decode_ta_CORE(uint32_t);
static void L3i_decode_ta_AGENT_CONTROL(uint32_t);
static void L3i_decode_ta_AGENT_STATUS(uint32_t);
static void L3i_decode_ta_ERROR_LOG(uint32_t);
static void L3i_decode_ta_ERROR_LOG_ADDR(uint32_t);
#ifdef NOTYET
static int L3i_search(struct device *, struct cfdata *,
const int *, void *);
static int L3i_print(void *, const char *);
#endif
#define TARGET_AGENT_REGS_ENTRY(reg) \
{ .offset = OMAP2_TA_ ## reg, \
.decode = L3i_decode_ta_ ## reg, \
.name = #reg }
struct {
bus_size_t offset;
void (*decode)(uint32_t);
const char *name;
} target_agent_regs[] = {
TARGET_AGENT_REGS_ENTRY(COMPONENT),
TARGET_AGENT_REGS_ENTRY(CORE),
TARGET_AGENT_REGS_ENTRY(AGENT_CONTROL),
TARGET_AGENT_REGS_ENTRY(AGENT_STATUS),
TARGET_AGENT_REGS_ENTRY(ERROR_LOG),
TARGET_AGENT_REGS_ENTRY(ERROR_LOG_ADDR),
};
#define TARGET_AGENT_REGS_NENTRIES \
(sizeof(target_agent_regs) / sizeof(target_agent_regs[0]))
/* attach structures */
CFATTACH_DECL(L3i, sizeof(struct L3i_softc),
L3i_match, L3i_attach, NULL, NULL);
static int L3i_attached; /* XXX assumes only 1 instance */
static int
L3i_match(struct device *parent, struct cfdata *match, void *aux)
{
if (L3i_attached != 0)
return 0;
return 1;
}
static void
L3i_attach(struct device *parent, struct device *self, void *aux)
{
struct L3i_softc *sc = (struct L3i_softc *)self;
sc->sc_iot = &omap_bs_tag;
aprint_normal(": L3i Interconnect\n");
sc->sc_ioh = 0;
#ifdef NOTYET
sc->sc_dmac = &omap_bus_dma_tag;
#endif
L3i_attached = 1;
#ifdef L3I_DEBUG
L3i_target_agent_check(sc, (bus_addr_t)OMAP2_TA_L4_CORE, "L4 core");
L3i_target_agent_check(sc, (bus_addr_t)OMAP2_TA_GPMC, "GPMC");
#endif
#ifdef NOTYET
/*
* Attach all our devices
*/
config_search_ia(L3i_search, self, "L3i", NULL);
#endif
}
static void
L3i_decode_ta_COMPONENT(uint32_t val)
{
aprint_normal("\tCODE %#" PRIxMAX "\n", TA_COMPONENT_CODE(val));
aprint_normal("\tREV %#" PRIxMAX "\n", TA_COMPONENT_REV(val));
}
static void
L3i_decode_ta_CORE(uint32_t val)
{
aprint_normal("\tCODE %#" PRIxMAX "\n", TA_AGENT_CORE_CODE(val));
aprint_normal("\tREV %#" PRIxMAX "\n", TA_AGENT_CORE_REV(val));
}
static void
L3i_decode_ta_AGENT_CONTROL(uint32_t val)
{
const uint core_timeout_base_tab[8] = {
0, 1, 2, 3, 4, -1, -1, -1
};
uint core_timeout_ix;
core_timeout_ix = (val & TA_AGENT_CONTROL_CORE_TIMEOUT_BASE)
>> TA_AGENT_CONTROL_CORE_TIMEOUT_BASE_SHFT;
aprint_normal("\tCORE_REQ_TIMEOUT_REP %d\n",
((val & TA_AGENT_CONTROL_CORE_REQ_TIMEOUT_REP) != 0));
aprint_normal("\tCORE_SERROR_REP %d\n",
((val & TA_AGENT_CONTROL_CORE_SERROR_REP) != 0));
aprint_normal("\tCORE_TIMEOUT_BASE %d\n",
core_timeout_base_tab[core_timeout_ix]);
aprint_normal("\tCORE_REJECT %d\n",
((val & TA_AGENT_CONTROL_CORE_REJECT) != 0));
aprint_normal("\tCORE_RESET %d\n",
((val & TA_AGENT_CONTROL_CORE_RESET) != 0));
}
static void
L3i_decode_ta_AGENT_STATUS(uint32_t val)
{
aprint_normal("\tSERROR %d\n",
((val & TA_AGENT_STATUS_SERROR) != 0));
aprint_normal("\tBURST_CLOSE %d\n",
((val & TA_AGENT_STATUS_BURST_CLOSE) != 0));
aprint_normal("\tTA_AGENT_STATUS_TIMEBASE %" PRIdMAX "\n",
((val & TA_AGENT_STATUS_TIMEBASE) >> 12));
aprint_normal("\tREQ_TIMEOUT %d\n",
((val & TA_AGENT_STATUS_REQ_TIMEOUT) != 0));
aprint_normal("\tREADEX %d\n",
((val & TA_AGENT_STATUS_READEX) != 0));
aprint_normal("\tBURST %d\n",
((val & TA_AGENT_STATUS_BURST) != 0));
aprint_normal("\tRESP_ACTIVE %d\n",
((val & TA_AGENT_STATUS_RESP_ACTIVE) != 0));
aprint_normal("\tREQ_WAITING %d\n",
((val & TA_AGENT_STATUS_REQ_WAITING) != 0));
aprint_normal("\tCORE_RESET %d\n",
((val & TA_AGENT_STATUS_CORE_RESET) != 0));
}
static void
L3i_decode_ta_ERROR_LOG(uint32_t val)
{
aprint_normal("\tCMD %" PRIdMAX "\n",
(val & TA_ERROR_LOG_CMD));
aprint_normal("\tINITID %" PRIdMAX "\n",
(val & TA_ERROR_LOG_INITID) >> 8);
aprint_normal("\tCODE %" PRIdMAX "\n",
(val & TA_ERROR_LOG_CODE) >> 24);
aprint_normal("\tMULTI %d\n",
((val & TA_ERROR_LOG_MULTI) != 0));
}
static void
L3i_decode_ta_ERROR_LOG_ADDR(uint32_t val)
{
}
void
L3i_target_agent_check(struct L3i_softc *sc, bus_addr_t ba, char *agent)
{
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh;
uint32_t r;
uint i;
int err;
err = bus_space_map(sc->sc_iot, ba, 1024, 0, &ioh);
if (err != 0) {
aprint_error("%s: cannot map L3 Target Agent %s at %#lx\n",
sc->sc_dev.dv_xname, agent, ba);
return;
}
for (i=0; i < TARGET_AGENT_REGS_NENTRIES; i++) {
r = bus_space_read_4(iot, ioh, target_agent_regs[i].offset);
aprint_normal("%s: Agent %s Reg %s: %#x\n", sc->sc_dev.dv_xname,
agent, target_agent_regs[i].name, r);
target_agent_regs[i].decode(r);
}
bus_space_unmap(sc->sc_iot, ioh, 1024);
}
#ifdef NOTYET
static int
L3i_search(struct device *parent, struct cfdata *cf,
const int *ldesc, void *aux)
{
struct L3i_softc *sc = (struct L3i_softc *)parent;
struct L3i_attach_args aa;
/* Set up the attach args. */
if (cf->cf_loc[L3iCF_NOBYTEACC] == 1) {
if (cf->cf_loc[L3iCF_MULT] == 1)
aa.L3i_iot = &nobyteacc_bs_tag;
else
panic("nobyteacc specified for device with "
"non-byte multiplier\n");
} else {
switch (cf->cf_loc[L3iCF_MULT]) {
case 1:
aa.L3i_iot = &omap_bs_tag;
break;
case 2:
aa.L3i_iot = &omap_a2x_bs_tag;
break;
case 4:
aa.L3i_iot = &omap_a4x_bs_tag;
break;
default:
panic("Unsupported EMIFS multiplier.");
break;
}
}
aa.L3i_dmac = sc->sc_dmac;
aa.L3i_addr = cf->cf_loc[L3iCF_ADDR];
aa.L3i_size = cf->cf_loc[L3iCF_SIZE];
aa.L3i_intr = cf->cf_loc[L3iCF_INTR];
#if defined(OMAP2)
if ((aa.L3i_addr >= OMAP2_L3i_BASE)
&& (aa.L3i_addr < (OMAP2_L4_CORE_BASE + OMAP2_L3i_SIZE))) {
/* XXX
* if size was specified, then check it too
* otherwise just assume it is OK
*/
if ((aa.L3i_size != L3iCF_SIZE_DEFAULT)
&& ((aa.L3i_addr + aa.L3i_size)
>= (OMAP2_L4_CORE_BASE + OMAP2_L3i_SIZE)))
return 1; /* NG */
if (config_match(parent, cf, &aa)) {
config_attach(parent, cf, &aa, L3i_print);
return 0; /* love it */
}
}
#endif
return 1; /* NG */
}
static int
L3i_print(void *aux, const char *name)
{
struct L3i_attach_args *sa = (struct L3i_attach_args*)aux;
if (sa->L3i_addr != L3iCF_ADDR_DEFAULT) {
aprint_normal(" addr 0x%08lx", sa->L3i_addr);
if (sa->L3i_size != L3iCF_SIZE_DEFAULT)
aprint_normal("-0x%08lx",
sa->L3i_addr + sa->L3i_size-1);
}
if (sa->L3i_intr != L3iCF_INTR_DEFAULT)
aprint_normal(" intr %d", sa->L3i_intr);
return UNCONF;
}
#endif /* NOTYET */