path: root/drivers/atm/solos-pci.c

/*
 * Driver for the Solos PCI ADSL2+ card, designed to support Linux by
 *  Traverse Technologies -- http://www.traverse.com.au/
 *  Xrio Limited          -- http://www.xrio.com/
 *
 *
 * Copyright © 2008 Traverse Technologies
 * Copyright © 2008 Intel Corporation
 *
 * Authors: Nathan Williams <nathan@traverse.com.au>
 *          David Woodhouse <dwmw2@infradead.org>
 *          Treker Chen <treker@xrio.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#define DEBUG
#define VERBOSE_DEBUG

#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/atm.h>
#include <linux/atmdev.h>
#include <linux/skbuff.h>
#include <linux/sysfs.h>
#include <linux/device.h>
#include <linux/kobject.h>
#include <linux/firmware.h>
#include <linux/ctype.h>
#include <linux/swab.h>

#define VERSION "0.07"
#define PTAG "solos-pci"

#define CONFIG_RAM_SIZE	128
#define FLAGS_ADDR	0x7C
#define IRQ_EN_ADDR	0x78
#define FPGA_VER	0x74
#define IRQ_CLEAR	0x70
#define WRITE_FLASH	0x6C
#define PORTS		0x68
#define FLASH_BLOCK	0x64
#define FLASH_BUSY	0x60
#define FPGA_MODE	0x5C
#define FLASH_MODE	0x58
#define TX_DMA_ADDR(port)	(0x40 + (4 * (port)))
#define RX_DMA_ADDR(port)	(0x30 + (4 * (port)))

#define DATA_RAM_SIZE	32768
#define BUF_SIZE	4096
#define FPGA_PAGE	528 /* FPGA flash page size*/
#define SOLOS_PAGE	512 /* Solos flash page size*/
#define FPGA_BLOCK	(FPGA_PAGE * 8) /* FPGA flash block size*/
#define SOLOS_BLOCK	(SOLOS_PAGE * 8) /* Solos flash block size*/

#define RX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2)
#define TX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2 + BUF_SIZE)

#define RX_DMA_SIZE	2048

static int atmdebug = 0;
static int firmware_upgrade = 0;
static int fpga_upgrade = 0;

struct pkt_hdr {
	__le16 size;
	__le16 vpi;
	__le16 vci;
	__le16 type;
};

struct solos_skb_cb {
	struct atm_vcc *vcc;
	uint32_t dma_addr;
};


#define SKB_CB(skb)		((struct solos_skb_cb *)skb->cb)

#define PKT_DATA	0
#define PKT_COMMAND	1
#define PKT_POPEN	3
#define PKT_PCLOSE	4
#define PKT_STATUS	5

struct solos_card {
	void __iomem *config_regs;
	void __iomem *buffers;
	int nr_ports;
	int tx_mask;
	struct pci_dev *dev;
	struct atm_dev *atmdev[4];
	struct tasklet_struct tlet;
	spinlock_t tx_lock;
	spinlock_t tx_queue_lock;
	spinlock_t cli_queue_lock;
	spinlock_t param_queue_lock;
	struct list_head param_queue;
	struct sk_buff_head tx_queue[4];
	struct sk_buff_head cli_queue[4];
	struct sk_buff *tx_skb[4];
	struct sk_buff *rx_skb[4];
	wait_queue_head_t param_wq;
	wait_queue_head_t fw_wq;
	int using_dma;
};


struct solos_param {
	struct list_head list;
	pid_t pid;
	int port;
	struct sk_buff *response;
};

#define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data)

MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>");
MODULE_DESCRIPTION("Solos PCI driver");
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
MODULE_PARM_DESC(atmdebug, "Print ATM data");
MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade");
MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade");
module_param(atmdebug, int, 0644);
module_param(firmware_upgrade, int, 0444);
module_param(fpga_upgrade, int, 0444);

static void fpga_queue(struct solos_card *card, int