mirror of https://gitee.com/openkylin/linux.git
[POWERPC] PS3: Device registration routines.
Add routines to probe devices present on the system and to register those devices with the LDM. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Geoff Levand
Paul Mackerras
parent
9e6b99bd44
commit
ffbdd24647
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@ -4,3 +4,4 @@ obj-y += system-bus.o
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obj-$(CONFIG_SMP) += smp.o
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obj-$(CONFIG_SPU_BASE) += spu.o
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obj-y += device-init.o
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@ -0,0 +1,499 @@
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/*
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* PS3 device registration routines.
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*
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* Copyright (C) 2007 Sony Computer Entertainment Inc.
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* Copyright 2007 Sony Corp.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/delay.h>
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#include <linux/freezer.h>
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#include <linux/kernel.h>
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#include <linux/kthread.h>
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#include <linux/init.h>
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#include <asm/firmware.h>
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#include <asm/lv1call.h>
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#include "platform.h"
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/**
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* ps3_setup_gelic_device - Setup and register a gelic device instance.
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*
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* Allocates memory for a struct ps3_system_bus_device instance, initialises the
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* structure members, and registers the device instance with the system bus.
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*/
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static int __init ps3_setup_gelic_device(
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const struct ps3_repository_device *repo)
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{
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int result;
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struct layout {
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struct ps3_system_bus_device dev;
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struct ps3_dma_region d_region;
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} *p;
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pr_debug(" -> %s:%d\n", __func__, __LINE__);
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BUG_ON(repo->bus_type != PS3_BUS_TYPE_SB);
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BUG_ON(repo->dev_type != PS3_DEV_TYPE_SB_GELIC);
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p = kzalloc(sizeof(struct layout), GFP_KERNEL);
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if (!p) {
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result = -ENOMEM;
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goto fail_malloc;
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}
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p->dev.match_id = PS3_MATCH_ID_GELIC;
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p->dev.dev_type = PS3_DEVICE_TYPE_SB;
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p->dev.bus_id = repo->bus_id;
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p->dev.dev_id = repo->dev_id;
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p->dev.d_region = &p->d_region;
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result = ps3_repository_find_interrupt(repo,
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PS3_INTERRUPT_TYPE_EVENT_PORT, &p->dev.interrupt_id);
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if (result) {
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pr_debug("%s:%d ps3_repository_find_interrupt failed\n",
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__func__, __LINE__);
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goto fail_find_interrupt;
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}
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BUG_ON(p->dev.interrupt_id != 0);
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result = ps3_dma_region_init(&p->dev, p->dev.d_region, PS3_DMA_64K,
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PS3_DMA_OTHER, NULL, 0);
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if (result) {
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pr_debug("%s:%d ps3_dma_region_init failed\n",
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__func__, __LINE__);
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goto fail_dma_init;
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}
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result = ps3_system_bus_device_register(&p->dev);
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if (result) {
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pr_debug("%s:%d ps3_system_bus_device_register failed\n",
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__func__, __LINE__);
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goto fail_device_register;
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}
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pr_debug(" <- %s:%d\n", __func__, __LINE__);
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return result;
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fail_device_register:
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fail_dma_init:
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fail_find_interrupt:
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kfree(p);
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fail_malloc:
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pr_debug(" <- %s:%d: fail.\n", __func__, __LINE__);
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return result;
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}
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static int __init_refok ps3_setup_uhc_device(
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const struct ps3_repository_device *repo, enum ps3_match_id match_id,
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enum ps3_interrupt_type interrupt_type, enum ps3_reg_type reg_type)
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{
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int result;
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struct layout {
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struct ps3_system_bus_device dev;
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struct ps3_dma_region d_region;
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struct ps3_mmio_region m_region;
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} *p;
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u64 bus_addr;
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u64 len;
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pr_debug(" -> %s:%d\n", __func__, __LINE__);
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BUG_ON(repo->bus_type != PS3_BUS_TYPE_SB);
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BUG_ON(repo->dev_type != PS3_DEV_TYPE_SB_USB);
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p = kzalloc(sizeof(struct layout), GFP_KERNEL);
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if (!p) {
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result = -ENOMEM;
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goto fail_malloc;
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}
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p->dev.match_id = match_id;
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p->dev.dev_type = PS3_DEVICE_TYPE_SB;
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p->dev.bus_id = repo->bus_id;
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p->dev.dev_id = repo->dev_id;
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p->dev.d_region = &p->d_region;
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p->dev.m_region = &p->m_region;
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result = ps3_repository_find_interrupt(repo,
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interrupt_type, &p->dev.interrupt_id);
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if (result) {
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pr_debug("%s:%d ps3_repository_find_interrupt failed\n",
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__func__, __LINE__);
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goto fail_find_interrupt;
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}
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result = ps3_repository_find_reg(repo, reg_type,
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&bus_addr, &len);
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if (result) {
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pr_debug("%s:%d ps3_repository_find_reg failed\n",
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__func__, __LINE__);
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goto fail_find_reg;
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}
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result = ps3_dma_region_init(&p->dev, p->dev.d_region, PS3_DMA_64K,
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PS3_DMA_INTERNAL, NULL, 0);
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if (result) {
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pr_debug("%s:%d ps3_dma_region_init failed\n",
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__func__, __LINE__);
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goto fail_dma_init;
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}
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result = ps3_mmio_region_init(&p->dev, p->dev.m_region, bus_addr, len,
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PS3_MMIO_4K);
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if (result) {
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pr_debug("%s:%d ps3_mmio_region_init failed\n",
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__func__, __LINE__);
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goto fail_mmio_init;
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}
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result = ps3_system_bus_device_register(&p->dev);
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if (result) {
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pr_debug("%s:%d ps3_system_bus_device_register failed\n",
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__func__, __LINE__);
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goto fail_device_register;
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}
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pr_debug(" <- %s:%d\n", __func__, __LINE__);
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return result;
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fail_device_register:
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fail_mmio_init:
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fail_dma_init:
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fail_find_reg:
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fail_find_interrupt:
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kfree(p);
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fail_malloc:
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pr_debug(" <- %s:%d: fail.\n", __func__, __LINE__);
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return result;
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}
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static int __init ps3_setup_ehci_device(
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const struct ps3_repository_device *repo)
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{
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return ps3_setup_uhc_device(repo, PS3_MATCH_ID_EHCI,
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PS3_INTERRUPT_TYPE_SB_EHCI, PS3_REG_TYPE_SB_EHCI);
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}
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static int __init ps3_setup_ohci_device(
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const struct ps3_repository_device *repo)
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{
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return ps3_setup_uhc_device(repo, PS3_MATCH_ID_OHCI,
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PS3_INTERRUPT_TYPE_SB_OHCI, PS3_REG_TYPE_SB_OHCI);
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}
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static int __init ps3_setup_vuart_device(enum ps3_match_id match_id,
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unsigned int port_number)
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{
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int result;
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struct layout {
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struct ps3_system_bus_device dev;
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} *p;
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pr_debug(" -> %s:%d: match_id %u, port %u\n", __func__, __LINE__,
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match_id, port_number);
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p = kzalloc(sizeof(struct layout), GFP_KERNEL);
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if (!p)
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return -ENOMEM;
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p->dev.match_id = match_id;
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p->dev.dev_type = PS3_DEVICE_TYPE_VUART;
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p->dev.port_number = port_number;
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result = ps3_system_bus_device_register(&p->dev);
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if (result)
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pr_debug("%s:%d ps3_system_bus_device_register failed\n",
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__func__, __LINE__);
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pr_debug(" <- %s:%d\n", __func__, __LINE__);
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return result;
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}
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static int __init ps3_register_vuart_devices(void)
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{
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int result;
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unsigned int port_number;
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pr_debug(" -> %s:%d\n", __func__, __LINE__);
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result = ps3_repository_read_vuart_av_port(&port_number);
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if (result)
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port_number = 0; /* av default */
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result = ps3_setup_vuart_device(PS3_MATCH_ID_AV_SETTINGS, port_number);
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WARN_ON(result);
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result = ps3_repository_read_vuart_sysmgr_port(&port_number);
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if (result)
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port_number = 2; /* sysmgr default */
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result = ps3_setup_vuart_device(PS3_MATCH_ID_SYSTEM_MANAGER,
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port_number);
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WARN_ON(result);
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pr_debug(" <- %s:%d\n", __func__, __LINE__);
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return result;
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}
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static int __init ps3_register_sound_devices(void)
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{
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int result;
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struct layout {
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struct ps3_system_bus_device dev;
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struct ps3_dma_region d_region;
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struct ps3_mmio_region m_region;
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} *p;
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pr_debug(" -> %s:%d\n", __func__, __LINE__);
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p = kzalloc(sizeof(*p), GFP_KERNEL);
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if (!p)
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return -ENOMEM;
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p->dev.match_id = PS3_MATCH_ID_SOUND;
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p->dev.dev_type = PS3_DEVICE_TYPE_IOC0;
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p->dev.d_region = &p->d_region;
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p->dev.m_region = &p->m_region;
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result = ps3_system_bus_device_register(&p->dev);
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if (result)
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pr_debug("%s:%d ps3_system_bus_device_register failed\n",
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__func__, __LINE__);
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pr_debug(" <- %s:%d\n", __func__, __LINE__);
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return result;
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}
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static int __init ps3_register_graphics_devices(void)
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{
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int result;
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struct layout {
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struct ps3_system_bus_device dev;
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} *p;
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pr_debug(" -> %s:%d\n", __func__, __LINE__);
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p = kzalloc(sizeof(struct layout), GFP_KERNEL);
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if (!p)
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return -ENOMEM;
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p->dev.match_id = PS3_MATCH_ID_GRAPHICS;
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p->dev.dev_type = PS3_DEVICE_TYPE_IOC0;
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result = ps3_system_bus_device_register(&p->dev);
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if (result)
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pr_debug("%s:%d ps3_system_bus_device_register failed\n",
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__func__, __LINE__);
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pr_debug(" <- %s:%d\n", __func__, __LINE__);
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return result;
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}
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/**
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* ps3_register_repository_device - Register a device from the repositiory info.
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*
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*/
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static int ps3_register_repository_device(
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const struct ps3_repository_device *repo)
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{
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int result;
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switch (repo->dev_type) {
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case PS3_DEV_TYPE_SB_GELIC:
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result = ps3_setup_gelic_device(repo);
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if (result) {
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pr_debug("%s:%d ps3_setup_gelic_device failed\n",
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__func__, __LINE__);
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}
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break;
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case PS3_DEV_TYPE_SB_USB:
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/* Each USB device has both an EHCI and an OHCI HC */
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result = ps3_setup_ehci_device(repo);
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if (result) {
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pr_debug("%s:%d ps3_setup_ehci_device failed\n",
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__func__, __LINE__);
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}
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result = ps3_setup_ohci_device(repo);
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if (result) {
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pr_debug("%s:%d ps3_setup_ohci_device failed\n",
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__func__, __LINE__);
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}
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break;
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default:
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result = 0;
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pr_debug("%s:%u: unsupported dev_type %u\n", __func__, __LINE__,
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repo->dev_type);
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}
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return result;
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}
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/**
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* ps3_probe_thread - Background repository probing at system startup.
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*
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* This implementation only supports background probing on a single bus.
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*/
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static int ps3_probe_thread(void *data)
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{
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struct ps3_repository_device *repo = data;
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int result;
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unsigned int ms = 250;
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pr_debug(" -> %s:%u: kthread started\n", __func__, __LINE__);
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do {
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try_to_freeze();
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pr_debug("%s:%u: probing...\n", __func__, __LINE__);
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do {
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result = ps3_repository_find_device(repo);
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if (result == -ENODEV)
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pr_debug("%s:%u: nothing new\n", __func__,
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__LINE__);
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else if (result)
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pr_debug("%s:%u: find device error.\n",
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__func__, __LINE__);
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else {
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pr_debug("%s:%u: found device\n", __func__,
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__LINE__);
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ps3_register_repository_device(repo);
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ps3_repository_bump_device(repo);
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ms = 250;
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}
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} while (!result);
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pr_debug("%s:%u: ms %u\n", __func__, __LINE__, ms);
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if ( ms > 60000)
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break;
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msleep_interruptible(ms);
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/* An exponential backoff. */
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ms <<= 1;
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} while (!kthread_should_stop());
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pr_debug(" <- %s:%u: kthread finished\n", __func__, __LINE__);
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return 0;
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}
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/**
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* ps3_start_probe_thread - Starts the background probe thread.
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*
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*/
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static int __init ps3_start_probe_thread(enum ps3_bus_type bus_type)
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{
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int result;
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struct task_struct *task;
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static struct ps3_repository_device repo; /* must be static */
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pr_debug(" -> %s:%d\n", __func__, __LINE__);
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memset(&repo, 0, sizeof(repo));
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repo.bus_type = bus_type;
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result = ps3_repository_find_bus(repo.bus_type, 0, &repo.bus_index);
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if (result) {
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printk(KERN_ERR "%s: Cannot find bus (%d)\n", __func__, result);
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return -ENODEV;
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}
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result = ps3_repository_read_bus_id(repo.bus_index, &repo.bus_id);
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if (result) {
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printk(KERN_ERR "%s: read_bus_id failed %d\n", __func__,
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result);
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return -ENODEV;
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}
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task = kthread_run(ps3_probe_thread, &repo, "ps3-probe-%u", bus_type);
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if (IS_ERR(task)) {
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result = PTR_ERR(task);
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printk(KERN_ERR "%s: kthread_run failed %d\n", __func__,
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result);
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return result;
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}
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pr_debug(" <- %s:%d\n", __func__, __LINE__);
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return 0;
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}
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/**
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* ps3_register_devices - Probe the system and register devices found.
|
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*
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* A device_initcall() routine.
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*/
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static int __init ps3_register_devices(void)
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{
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int result;
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|
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if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
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return -ENODEV;
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pr_debug(" -> %s:%d\n", __func__, __LINE__);
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/* ps3_repository_dump_bus_info(); */
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result = ps3_start_probe_thread(PS3_BUS_TYPE_STORAGE);
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ps3_register_vuart_devices();
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ps3_register_graphics_devices();
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ps3_repository_find_devices(PS3_BUS_TYPE_SB,
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ps3_register_repository_device);
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ps3_register_sound_devices();
|
||||
|
||||
pr_debug(" <- %s:%d\n", __func__, __LINE__);
|
||||
return 0;
|
||||
}
|
||||
|
||||
device_initcall(ps3_register_devices);
|
||||
Loading…
Reference in New Issue