7626e78d29
PS3 vuart updates to reflect the new PS3 unified device support. - Move vuart devices to the PS3 system bus. - Replace use of ps3_vuart_port_device with ps3_system_bus_device. - Make the PS3 vuart bus driver a loadable module. - Add remove() and shutdown() routines. - Move ps3_vuart_work into ps3_vuart_port_priv.tx_list. - Remove redundant spinlock ps3_vuart_work.lock. - No longer free ps3_vuart_port_device.priv on shutdown. - Cleanup Kconfig defs. - Export symbols needed for modular port drivers. - Arrange to use port numbers found in repository. - Fix bugs in ps3_vuart_read_async() and polled reading - Cleanup handling of shared interrupt with ps3_vuart_bus_interrupt_get() and ps3_vuart_bus_interrupt_put() - Add more comments to vuart.c. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
85 lines
2.8 KiB
C
85 lines
2.8 KiB
C
/*
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* PS3 virtual uart
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*
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* Copyright (C) 2006 Sony Computer Entertainment Inc.
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* Copyright 2006 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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#if !defined(_PS3_VUART_H)
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#define _PS3_VUART_H
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#include <asm/ps3.h>
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struct ps3_vuart_stats {
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unsigned long bytes_written;
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unsigned long bytes_read;
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unsigned long tx_interrupts;
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unsigned long rx_interrupts;
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unsigned long disconnect_interrupts;
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};
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struct ps3_vuart_work {
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struct work_struct work;
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unsigned long trigger;
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struct ps3_system_bus_device *dev; /* to convert work to device */
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};
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/**
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* struct ps3_vuart_port_driver - a driver for a device on a vuart port
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*/
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struct ps3_vuart_port_driver {
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struct ps3_system_bus_driver core;
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int (*probe)(struct ps3_system_bus_device *);
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int (*remove)(struct ps3_system_bus_device *);
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void (*shutdown)(struct ps3_system_bus_device *);
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void (*work)(struct ps3_system_bus_device *);
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/* int (*tx_event)(struct ps3_system_bus_device *dev); */
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/* int (*rx_event)(struct ps3_system_bus_device *dev); */
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/* int (*disconnect_event)(struct ps3_system_bus_device *dev); */
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/* int (*suspend)(struct ps3_system_bus_device *, pm_message_t); */
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/* int (*resume)(struct ps3_system_bus_device *); */
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};
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int ps3_vuart_port_driver_register(struct ps3_vuart_port_driver *drv);
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void ps3_vuart_port_driver_unregister(struct ps3_vuart_port_driver *drv);
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static inline struct ps3_vuart_port_driver *
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ps3_system_bus_dev_to_vuart_drv(struct ps3_system_bus_device *_dev)
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{
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struct ps3_system_bus_driver *sbd =
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ps3_system_bus_dev_to_system_bus_drv(_dev);
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BUG_ON(!sbd);
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return container_of(sbd, struct ps3_vuart_port_driver, core);
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}
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static inline struct ps3_system_bus_device *ps3_vuart_work_to_system_bus_dev(
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struct work_struct *_work)
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{
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struct ps3_vuart_work *vw = container_of(_work, struct ps3_vuart_work,
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work);
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return vw->dev;
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}
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int ps3_vuart_write(struct ps3_system_bus_device *dev, const void *buf,
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unsigned int bytes);
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int ps3_vuart_read(struct ps3_system_bus_device *dev, void *buf,
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unsigned int bytes);
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int ps3_vuart_read_async(struct ps3_system_bus_device *dev, unsigned int bytes);
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void ps3_vuart_cancel_async(struct ps3_system_bus_device *dev);
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void ps3_vuart_clear_rx_bytes(struct ps3_system_bus_device *dev,
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unsigned int bytes);
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#endif
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