/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* 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.
*/
#include "opt_broadcom.h"
#include "locators.h"
#define CRU_PRIVATE
#define IDM_PRIVATE
#include <sys/cdefs.h>
__KERNEL_RCSID(1, "$NetBSD: bcm53xx_idm.c,v 1.3 2012/12/12 00:01:28 matt Exp $");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/device.h>
#include <sys/intr.h>
#include <sys/systm.h>
#include <arm/mainbus/mainbus.h>
#include <arm/broadcom/bcm53xx_reg.h>
#include <arm/broadcom/bcm53xx_var.h>
struct idm_info {
bus_size_t idm_offset;
const char *idm_name;
int idm_port;
bool (*idm_unreset)(bus_space_tag_t, bus_space_handle_t,
const struct idm_info *);
};
static bool
bcmeth_unreset(bus_space_tag_t bst, bus_space_handle_t bsh,
const struct idm_info *idm)
{
/*
* To enable any GMAC, we must enable all off them.
*/
static const bus_size_t regoff[] = {
IDM_BASE + IDM_AMAC0_BASE,
IDM_BASE + IDM_AMAC1_BASE,
IDM_BASE + IDM_AMAC2_BASE,
IDM_BASE + IDM_AMAC3_BASE,
};
static bool bcmeth_init_done;
if (!bcmeth_init_done) {
for (size_t idx = 0; idx < __arraycount(regoff); idx++) {
const bus_size_t off = regoff[idx];
bus_space_write_4(bst, bsh, off + IDM_RESET_CONTROL, 0);
uint32_t v = bus_space_read_4(bst, bsh,
off + IDM_IO_CONTROL_DIRECT);
/*
* Clear read-allocate and write-allocate bits from
* ACP cache access so we don't pollute the caches with
* DMA traffic.
*/
v &= ~IO_CONTROL_DIRECT_ARCACHE;
v &= ~IO_CONTROL_DIRECT_AWCACHE;
#if 0
v |= __SHIFTIN(AXCACHE_WA, IO_CONTROL_DIRECT_ARCACHE);
v |= __SHIFTIN(AXCACHE_RA, IO_CONTROL_DIRECT_AWCACHE);
#endif
v |= __SHIFTIN(AXCACHE_C|AXCACHE_B, IO_CONTROL_DIRECT_ARCACHE);
v |= __SHIFTIN(AXCACHE_C|AXCACHE_B, IO_CONTROL_DIRECT_AWCACHE);
/*
* These are the default but make sure they are
* properly set.
*/
v |= __SHIFTIN(0x1F, IO_CONTROL_DIRECT_ARUSER);
v |= __SHIFTIN(0x1F, IO_CONTROL_DIRECT_AWUSER);
v |= IO_CONTROL_DIRECT_CLK_250_SEL;
v |= IO_CONTROL_DIRECT_DIRECT_GMII_MODE;
v |= IO_CONTROL_DIRECT_SOURCE_SYNC_MODE_EN;
v |= IO_CONTROL_DIRECT_CLK_GATING_EN;
bus_space_write_4(bst, bsh, off + IDM_IO_CONTROL_DIRECT,
v);
}
bcmeth_init_done = true;
}
return true;
}
static bool
bcmccb_idm_unreset(bus_space_tag_t bst, bus_space_handle_t bsh,
const struct idm_info *idm)
{
if (idm->idm_offset == 0)
return true;
/*
* If the device might be in reset, let's try to take it out of it.
*/
bus_size_t o = IDM_BASE + idm->idm_offset + IDM_RESET_CONTROL;
uint32_t v = bus_space_read_4(bst, bsh, o);
if (v & 1) {
v &= ~1;
bus_space_write_4(bst, bsh, o, v);
}
return true;
}
static bool
bcmpax2_idm_unreset(bus_space_tag_t bst, bus_space_handle_t bsh,
const struct idm_info *idm)
{
uint32_t v = bus_space_read_4(bst, bsh, CRU_BASE + CRU_STRAPS_CONTROL);
if (v & STRAP_USB3_SEL)
return false;
return bcmccb_idm_unreset(bst, bsh, idm);
}
static bool
bcmxhci_idm_unreset(bus_space_tag_t bst, bus_space_handle_t bsh,
const struct idm_info *idm)
{
uint32_t v = bus_space_read_4(bst, bsh, CRU_BASE + CRU_STRAPS_CONTROL);
if ((v & STRAP_USB3_SEL) == 0)
return false;
return bcmccb_idm_unreset(bst, bsh, idm);
}
static const struct idm_info bcm53xx_idm_info[] = {
{ 0, "bcmi2c", BCMCCBCF_PORT_DEFAULT, bcmccb_idm_unreset },
{ 0, "bcmmdio", BCMCCBCF_PORT_DEFAULT, bcmccb_idm_unreset },
{ 0, "bcmrng", BCMCCBCF_PORT_DEFAULT, bcmccb_idm_unreset },
{ IDM_PCIE_M0_BASE, "bcmpax", 0, bcmccb_idm_unreset },
{ IDM_PCIE_M1_BASE, "bcmpax", 1, bcmccb_idm_unreset },
{ IDM_PCIE_M2_BASE, "bcmpax", 2, bcmpax2_idm_unreset },
{ IDM_AMAC0_BASE, "bcmeth", 0, bcmeth_unreset },
{ IDM_AMAC1_BASE, "bcmeth", 1, bcmeth_unreset },
{ IDM_AMAC2_BASE, "bcmeth", 2, bcmeth_unreset },
{ IDM_AMAC3_BASE, "bcmeth", 3, bcmeth_unreset },
{ IDM_USB3_BASE, "xhci", BCMCCBCF_PORT_DEFAULT, bcmxhci_idm_unreset },
{ IDM_SDIO_BASE, "sdhc", BCMCCBCF_PORT_DEFAULT, bcmccb_idm_unreset },
{ IDM_USB2_BASE, "bcmusb", BCMCCBCF_PORT_DEFAULT, bcmccb_idm_unreset },
};
static const struct idm_info *
bcmccb_idm_lookup(const struct bcm_locators * const loc)
{
const struct idm_info *idm = bcm53xx_idm_info;
for (size_t i = 0; i < __arraycount(bcm53xx_idm_info); i++, idm++) {
if (strcmp(idm->idm_name, loc->loc_name) == 0
&& idm->idm_port == loc->loc_port) {
return idm;
}
}
return NULL;
}
bool
bcm53xx_idm_device_init(const struct bcm_locators *loc, bus_space_tag_t bst,
bus_space_handle_t bsh)
{
const struct idm_info * const idm = bcmccb_idm_lookup(loc);
if (idm == NULL)
return false;
/*
* If the device might be in reset, let's try to take it out of it.
*/
return (*idm->idm_unreset)(bst, bsh, idm);
}