mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 08:19:28 +00:00
![Christoph Hellwig](/assets/img/avatar_default.png)
All implementations of these two methods are dummies that always return -EINVAL. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
1496 lines
39 KiB
C
1496 lines
39 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Driver for the Solos PCI ADSL2+ card, designed to support Linux by
|
|
* Traverse Technologies -- https://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>
|
|
*/
|
|
|
|
#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>
|
|
#include <linux/slab.h>
|
|
|
|
#define VERSION "1.04"
|
|
#define DRIVER_VERSION 0x01
|
|
#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 GPIO_STATUS 0x54
|
|
#define DRIVER_VER 0x50
|
|
#define TX_DMA_ADDR(port) (0x40 + (4 * (port)))
|
|
#define RX_DMA_ADDR(port) (0x30 + (4 * (port)))
|
|
|
|
#define DATA_RAM_SIZE 32768
|
|
#define BUF_SIZE 2048
|
|
#define OLD_BUF_SIZE 4096 /* For FPGA versions <= 2*/
|
|
/* Old boards use ATMEL AD45DB161D flash */
|
|
#define ATMEL_FPGA_PAGE 528 /* FPGA flash page size*/
|
|
#define ATMEL_SOLOS_PAGE 512 /* Solos flash page size*/
|
|
#define ATMEL_FPGA_BLOCK (ATMEL_FPGA_PAGE * 8) /* FPGA block size*/
|
|
#define ATMEL_SOLOS_BLOCK (ATMEL_SOLOS_PAGE * 8) /* Solos block size*/
|
|
/* Current boards use M25P/M25PE SPI flash */
|
|
#define SPI_FLASH_BLOCK (256 * 64)
|
|
|
|
#define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2)
|
|
#define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size))
|
|
#define FLASH_BUF ((card->buffers) + 4*(card->buffer_size)*2)
|
|
|
|
#define RX_DMA_SIZE 2048
|
|
|
|
#define FPGA_VERSION(a,b) (((a) << 8) + (b))
|
|
#define LEGACY_BUFFERS 2
|
|
#define DMA_SUPPORTED 4
|
|
|
|
static int reset = 0;
|
|
static int atmdebug = 0;
|
|
static int firmware_upgrade = 0;
|
|
static int fpga_upgrade = 0;
|
|
static int db_firmware_upgrade = 0;
|
|
static int db_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];
|
|
unsigned char *dma_bounce;
|
|
wait_queue_head_t param_wq;
|
|
wait_queue_head_t fw_wq;
|
|
int using_dma;
|
|
int dma_alignment;
|
|
int fpga_version;
|
|
int buffer_size;
|
|
int atmel_flash;
|
|
};
|
|
|
|
|
|
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_FIRMWARE("solos-FPGA.bin");
|
|
MODULE_FIRMWARE("solos-Firmware.bin");
|
|
MODULE_FIRMWARE("solos-db-FPGA.bin");
|
|
MODULE_PARM_DESC(reset, "Reset Solos chips on startup");
|
|
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_PARM_DESC(db_firmware_upgrade, "Initiate daughter board Solos firmware upgrade");
|
|
MODULE_PARM_DESC(db_fpga_upgrade, "Initiate daughter board FPGA upgrade");
|
|
module_param(reset, int, 0444);
|
|
module_param(atmdebug, int, 0644);
|
|
module_param(firmware_upgrade, int, 0444);
|
|
module_param(fpga_upgrade, int, 0444);
|
|
module_param(db_firmware_upgrade, int, 0444);
|
|
module_param(db_fpga_upgrade, int, 0444);
|
|
|
|
static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
|
|
struct atm_vcc *vcc);
|
|
static uint32_t fpga_tx(struct solos_card *);
|
|
static irqreturn_t solos_irq(int irq, void *dev_id);
|
|
static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
|
|
static int atm_init(struct solos_card *, struct device *);
|
|
static void atm_remove(struct solos_card *);
|
|
static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
|
|
static void solos_bh(unsigned long);
|
|
static int print_buffer(struct sk_buff *buf);
|
|
|
|
static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb)
|
|
{
|
|
if (vcc->pop)
|
|
vcc->pop(vcc, skb);
|
|
else
|
|
dev_kfree_skb_any(skb);
|
|
}
|
|
|
|
static ssize_t solos_param_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
|
|
struct solos_card *card = atmdev->dev_data;
|
|
struct solos_param prm;
|
|
struct sk_buff *skb;
|
|
struct pkt_hdr *header;
|
|
int buflen;
|
|
|
|
buflen = strlen(attr->attr.name) + 10;
|
|
|
|
skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
|
|
if (!skb) {
|
|
dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
header = skb_put(skb, sizeof(*header));
|
|
|
|
buflen = snprintf((void *)&header[1], buflen - 1,
|
|
"L%05d\n%s\n", current->pid, attr->attr.name);
|
|
skb_put(skb, buflen);
|
|
|
|
header->size = cpu_to_le16(buflen);
|
|
header->vpi = cpu_to_le16(0);
|
|
header->vci = cpu_to_le16(0);
|
|
header->type = cpu_to_le16(PKT_COMMAND);
|
|
|
|
prm.pid = current->pid;
|
|
prm.response = NULL;
|
|
prm.port = SOLOS_CHAN(atmdev);
|
|
|
|
spin_lock_irq(&card->param_queue_lock);
|
|
list_add(&prm.list, &card->param_queue);
|
|
spin_unlock_irq(&card->param_queue_lock);
|
|
|
|
fpga_queue(card, prm.port, skb, NULL);
|
|
|
|
wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
|
|
|
|
spin_lock_irq(&card->param_queue_lock);
|
|
list_del(&prm.list);
|
|
spin_unlock_irq(&card->param_queue_lock);
|
|
|
|
if (!prm.response)
|
|
return -EIO;
|
|
|
|
buflen = prm.response->len;
|
|
memcpy(buf, prm.response->data, buflen);
|
|
kfree_skb(prm.response);
|
|
|
|
return buflen;
|
|
}
|
|
|
|
static ssize_t solos_param_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
|
|
struct solos_card *card = atmdev->dev_data;
|
|
struct solos_param prm;
|
|
struct sk_buff *skb;
|
|
struct pkt_hdr *header;
|
|
int buflen;
|
|
ssize_t ret;
|
|
|
|
buflen = strlen(attr->attr.name) + 11 + count;
|
|
|
|
skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
|
|
if (!skb) {
|
|
dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
header = skb_put(skb, sizeof(*header));
|
|
|
|
buflen = snprintf((void *)&header[1], buflen - 1,
|
|
"L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf);
|
|
|
|
skb_put(skb, buflen);
|
|
header->size = cpu_to_le16(buflen);
|
|
header->vpi = cpu_to_le16(0);
|
|
header->vci = cpu_to_le16(0);
|
|
header->type = cpu_to_le16(PKT_COMMAND);
|
|
|
|
prm.pid = current->pid;
|
|
prm.response = NULL;
|
|
prm.port = SOLOS_CHAN(atmdev);
|
|
|
|
spin_lock_irq(&card->param_queue_lock);
|
|
list_add(&prm.list, &card->param_queue);
|
|
spin_unlock_irq(&card->param_queue_lock);
|
|
|
|
fpga_queue(card, prm.port, skb, NULL);
|
|
|
|
wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
|
|
|
|
spin_lock_irq(&card->param_queue_lock);
|
|
list_del(&prm.list);
|
|
spin_unlock_irq(&card->param_queue_lock);
|
|
|
|
skb = prm.response;
|
|
|
|
if (!skb)
|
|
return -EIO;
|
|
|
|
buflen = skb->len;
|
|
|
|
/* Sometimes it has a newline, sometimes it doesn't. */
|
|
if (skb->data[buflen - 1] == '\n')
|
|
buflen--;
|
|
|
|
if (buflen == 2 && !strncmp(skb->data, "OK", 2))
|
|
ret = count;
|
|
else if (buflen == 5 && !strncmp(skb->data, "ERROR", 5))
|
|
ret = -EIO;
|
|
else {
|
|
/* We know we have enough space allocated for this; we allocated
|
|
it ourselves */
|
|
skb->data[buflen] = 0;
|
|
|
|
dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n",
|
|
skb->data);
|
|
ret = -EIO;
|
|
}
|
|
kfree_skb(skb);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static char *next_string(struct sk_buff *skb)
|
|
{
|
|
int i = 0;
|
|
char *this = skb->data;
|
|
|
|
for (i = 0; i < skb->len; i++) {
|
|
if (this[i] == '\n') {
|
|
this[i] = 0;
|
|
skb_pull(skb, i + 1);
|
|
return this;
|
|
}
|
|
if (!isprint(this[i]))
|
|
return NULL;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Status packet has fields separated by \n, starting with a version number
|
|
* for the information therein. Fields are....
|
|
*
|
|
* packet version
|
|
* RxBitRate (version >= 1)
|
|
* TxBitRate (version >= 1)
|
|
* State (version >= 1)
|
|
* LocalSNRMargin (version >= 1)
|
|
* LocalLineAttn (version >= 1)
|
|
*/
|
|
static int process_status(struct solos_card *card, int port, struct sk_buff *skb)
|
|
{
|
|
char *str, *state_str, *snr, *attn;
|
|
int ver, rate_up, rate_down, err;
|
|
|
|
if (!card->atmdev[port])
|
|
return -ENODEV;
|
|
|
|
str = next_string(skb);
|
|
if (!str)
|
|
return -EIO;
|
|
|
|
err = kstrtoint(str, 10, &ver);
|
|
if (err) {
|
|
dev_warn(&card->dev->dev, "Unexpected status interrupt version\n");
|
|
return err;
|
|
}
|
|
if (ver < 1) {
|
|
dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",
|
|
ver);
|
|
return -EIO;
|
|
}
|
|
|
|
str = next_string(skb);
|
|
if (!str)
|
|
return -EIO;
|
|
if (!strcmp(str, "ERROR")) {
|
|
dev_dbg(&card->dev->dev, "Status packet indicated Solos error on port %d (starting up?)\n",
|
|
port);
|
|
return 0;
|
|
}
|
|
|
|
err = kstrtoint(str, 10, &rate_down);
|
|
if (err)
|
|
return err;
|
|
|
|
str = next_string(skb);
|
|
if (!str)
|
|
return -EIO;
|
|
err = kstrtoint(str, 10, &rate_up);
|
|
if (err)
|
|
return err;
|
|
|
|
state_str = next_string(skb);
|
|
if (!state_str)
|
|
return -EIO;
|
|
|
|
/* Anything but 'Showtime' is down */
|
|
if (strcmp(state_str, "Showtime")) {
|
|
atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST);
|
|
dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str);
|
|
return 0;
|
|
}
|
|
|
|
snr = next_string(skb);
|
|
if (!snr)
|
|
return -EIO;
|
|
attn = next_string(skb);
|
|
if (!attn)
|
|
return -EIO;
|
|
|
|
dev_info(&card->dev->dev, "Port %d: %s @%d/%d kb/s%s%s%s%s\n",
|
|
port, state_str, rate_down/1000, rate_up/1000,
|
|
snr[0]?", SNR ":"", snr, attn[0]?", Attn ":"", attn);
|
|
|
|
card->atmdev[port]->link_rate = rate_down / 424;
|
|
atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_FOUND);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
|
|
{
|
|
struct solos_param *prm;
|
|
unsigned long flags;
|
|
int cmdpid;
|
|
int found = 0, err;
|
|
|
|
if (skb->len < 7)
|
|
return 0;
|
|
|
|
if (skb->data[0] != 'L' || !isdigit(skb->data[1]) ||
|
|
!isdigit(skb->data[2]) || !isdigit(skb->data[3]) ||
|
|
!isdigit(skb->data[4]) || !isdigit(skb->data[5]) ||
|
|
skb->data[6] != '\n')
|
|
return 0;
|
|
|
|
err = kstrtoint(&skb->data[1], 10, &cmdpid);
|
|
if (err)
|
|
return err;
|
|
|
|
spin_lock_irqsave(&card->param_queue_lock, flags);
|
|
list_for_each_entry(prm, &card->param_queue, list) {
|
|
if (prm->port == port && prm->pid == cmdpid) {
|
|
prm->response = skb;
|
|
skb_pull(skb, 7);
|
|
wake_up(&card->param_wq);
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&card->param_queue_lock, flags);
|
|
return found;
|
|
}
|
|
|
|
static ssize_t console_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
|
|
struct solos_card *card = atmdev->dev_data;
|
|
struct sk_buff *skb;
|
|
unsigned int len;
|
|
|
|
spin_lock(&card->cli_queue_lock);
|
|
skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
|
|
spin_unlock(&card->cli_queue_lock);
|
|
if(skb == NULL)
|
|
return sprintf(buf, "No data.\n");
|
|
|
|
len = skb->len;
|
|
memcpy(buf, skb->data, len);
|
|
|
|
kfree_skb(skb);
|
|
return len;
|
|
}
|
|
|
|
static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct pkt_hdr *header;
|
|
|
|
if (size > (BUF_SIZE - sizeof(*header))) {
|
|
dev_dbg(&card->dev->dev, "Command is too big. Dropping request\n");
|
|
return 0;
|
|
}
|
|
skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC);
|
|
if (!skb) {
|
|
dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");
|
|
return 0;
|
|
}
|
|
|
|
header = skb_put(skb, sizeof(*header));
|
|
|
|
header->size = cpu_to_le16(size);
|
|
header->vpi = cpu_to_le16(0);
|
|
header->vci = cpu_to_le16(0);
|
|
header->type = cpu_to_le16(PKT_COMMAND);
|
|
|
|
skb_put_data(skb, buf, size);
|
|
|
|
fpga_queue(card, dev, skb, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t console_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
|
|
struct solos_card *card = atmdev->dev_data;
|
|
int err;
|
|
|
|
err = send_command(card, SOLOS_CHAN(atmdev), buf, count);
|
|
|
|
return err?:count;
|
|
}
|
|
|
|
struct geos_gpio_attr {
|
|
struct device_attribute attr;
|
|
int offset;
|
|
};
|
|
|
|
#define SOLOS_GPIO_ATTR(_name, _mode, _show, _store, _offset) \
|
|
struct geos_gpio_attr gpio_attr_##_name = { \
|
|
.attr = __ATTR(_name, _mode, _show, _store), \
|
|
.offset = _offset }
|
|
|
|
static ssize_t geos_gpio_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
|
|
struct solos_card *card = dev_get_drvdata(dev);
|
|
uint32_t data32;
|
|
|
|
if (count != 1 && (count != 2 || buf[1] != '\n'))
|
|
return -EINVAL;
|
|
|
|
spin_lock_irq(&card->param_queue_lock);
|
|
data32 = ioread32(card->config_regs + GPIO_STATUS);
|
|
if (buf[0] == '1') {
|
|
data32 |= 1 << gattr->offset;
|
|
iowrite32(data32, card->config_regs + GPIO_STATUS);
|
|
} else if (buf[0] == '0') {
|
|
data32 &= ~(1 << gattr->offset);
|
|
iowrite32(data32, card->config_regs + GPIO_STATUS);
|
|
} else {
|
|
count = -EINVAL;
|
|
}
|
|
spin_unlock_irq(&card->param_queue_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t geos_gpio_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
|
|
struct solos_card *card = dev_get_drvdata(dev);
|
|
uint32_t data32;
|
|
|
|
data32 = ioread32(card->config_regs + GPIO_STATUS);
|
|
data32 = (data32 >> gattr->offset) & 1;
|
|
|
|
return sprintf(buf, "%d\n", data32);
|
|
}
|
|
|
|
static ssize_t hardware_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
|
|
struct solos_card *card = dev_get_drvdata(dev);
|
|
uint32_t data32;
|
|
|
|
data32 = ioread32(card->config_regs + GPIO_STATUS);
|
|
switch (gattr->offset) {
|
|
case 0:
|
|
/* HardwareVersion */
|
|
data32 = data32 & 0x1F;
|
|
break;
|
|
case 1:
|
|
/* HardwareVariant */
|
|
data32 = (data32 >> 5) & 0x0F;
|
|
break;
|
|
}
|
|
return sprintf(buf, "%d\n", data32);
|
|
}
|
|
|
|
static DEVICE_ATTR_RW(console);
|
|
|
|
|
|
#define SOLOS_ATTR_RO(x) static DEVICE_ATTR(x, 0444, solos_param_show, NULL);
|
|
#define SOLOS_ATTR_RW(x) static DEVICE_ATTR(x, 0644, solos_param_show, solos_param_store);
|
|
|
|
#include "solos-attrlist.c"
|
|
|
|
static SOLOS_GPIO_ATTR(GPIO1, 0644, geos_gpio_show, geos_gpio_store, 9);
|
|
static SOLOS_GPIO_ATTR(GPIO2, 0644, geos_gpio_show, geos_gpio_store, 10);
|
|
static SOLOS_GPIO_ATTR(GPIO3, 0644, geos_gpio_show, geos_gpio_store, 11);
|
|
static SOLOS_GPIO_ATTR(GPIO4, 0644, geos_gpio_show, geos_gpio_store, 12);
|
|
static SOLOS_GPIO_ATTR(GPIO5, 0644, geos_gpio_show, geos_gpio_store, 13);
|
|
static SOLOS_GPIO_ATTR(PushButton, 0444, geos_gpio_show, NULL, 14);
|
|
static SOLOS_GPIO_ATTR(HardwareVersion, 0444, hardware_show, NULL, 0);
|
|
static SOLOS_GPIO_ATTR(HardwareVariant, 0444, hardware_show, NULL, 1);
|
|
#undef SOLOS_ATTR_RO
|
|
#undef SOLOS_ATTR_RW
|
|
|
|
#define SOLOS_ATTR_RO(x) &dev_attr_##x.attr,
|
|
#define SOLOS_ATTR_RW(x) &dev_attr_##x.attr,
|
|
|
|
static struct attribute *solos_attrs[] = {
|
|
#include "solos-attrlist.c"
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group solos_attr_group = {
|
|
.attrs = solos_attrs,
|
|
.name = "parameters",
|
|
};
|
|
|
|
static struct attribute *gpio_attrs[] = {
|
|
&gpio_attr_GPIO1.attr.attr,
|
|
&gpio_attr_GPIO2.attr.attr,
|
|
&gpio_attr_GPIO3.attr.attr,
|
|
&gpio_attr_GPIO4.attr.attr,
|
|
&gpio_attr_GPIO5.attr.attr,
|
|
&gpio_attr_PushButton.attr.attr,
|
|
&gpio_attr_HardwareVersion.attr.attr,
|
|
&gpio_attr_HardwareVariant.attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group gpio_attr_group = {
|
|
.attrs = gpio_attrs,
|
|
.name = "gpio",
|
|
};
|
|
|
|
static int flash_upgrade(struct solos_card *card, int chip)
|
|
{
|
|
const struct firmware *fw;
|
|
const char *fw_name;
|
|
int blocksize = 0;
|
|
int numblocks = 0;
|
|
int offset;
|
|
|
|
switch (chip) {
|
|
case 0:
|
|
fw_name = "solos-FPGA.bin";
|
|
if (card->atmel_flash)
|
|
blocksize = ATMEL_FPGA_BLOCK;
|
|
else
|
|
blocksize = SPI_FLASH_BLOCK;
|
|
break;
|
|
case 1:
|
|
fw_name = "solos-Firmware.bin";
|
|
if (card->atmel_flash)
|
|
blocksize = ATMEL_SOLOS_BLOCK;
|
|
else
|
|
blocksize = SPI_FLASH_BLOCK;
|
|
break;
|
|
case 2:
|
|
if (card->fpga_version > LEGACY_BUFFERS){
|
|
fw_name = "solos-db-FPGA.bin";
|
|
if (card->atmel_flash)
|
|
blocksize = ATMEL_FPGA_BLOCK;
|
|
else
|
|
blocksize = SPI_FLASH_BLOCK;
|
|
} else {
|
|
dev_info(&card->dev->dev, "FPGA version doesn't support"
|
|
" daughter board upgrades\n");
|
|
return -EPERM;
|
|
}
|
|
break;
|
|
case 3:
|
|
if (card->fpga_version > LEGACY_BUFFERS){
|
|
fw_name = "solos-Firmware.bin";
|
|
if (card->atmel_flash)
|
|
blocksize = ATMEL_SOLOS_BLOCK;
|
|
else
|
|
blocksize = SPI_FLASH_BLOCK;
|
|
} else {
|
|
dev_info(&card->dev->dev, "FPGA version doesn't support"
|
|
" daughter board upgrades\n");
|
|
return -EPERM;
|
|
}
|
|
break;
|
|
default:
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (request_firmware(&fw, fw_name, &card->dev->dev))
|
|
return -ENOENT;
|
|
|
|
dev_info(&card->dev->dev, "Flash upgrade starting\n");
|
|
|
|
/* New FPGAs require driver version before permitting flash upgrades */
|
|
iowrite32(DRIVER_VERSION, card->config_regs + DRIVER_VER);
|
|
|
|
numblocks = fw->size / blocksize;
|
|
dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size);
|
|
dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);
|
|
|
|
dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");
|
|
iowrite32(1, card->config_regs + FPGA_MODE);
|
|
(void) ioread32(card->config_regs + FPGA_MODE);
|
|
|
|
/* Set mode to Chip Erase */
|
|
if(chip == 0 || chip == 2)
|
|
dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n");
|
|
if(chip == 1 || chip == 3)
|
|
dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n");
|
|
iowrite32((chip * 2), card->config_regs + FLASH_MODE);
|
|
|
|
|
|
iowrite32(1, card->config_regs + WRITE_FLASH);
|
|
wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
|
|
|
|
for (offset = 0; offset < fw->size; offset += blocksize) {
|
|
int i;
|
|
|
|
/* Clear write flag */
|
|
iowrite32(0, card->config_regs + WRITE_FLASH);
|
|
|
|
/* Set mode to Block Write */
|
|
/* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */
|
|
iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE);
|
|
|
|
/* Copy block to buffer, swapping each 16 bits for Atmel flash */
|
|
for(i = 0; i < blocksize; i += 4) {
|
|
uint32_t word;
|
|
if (card->atmel_flash)
|
|
word = swahb32p((uint32_t *)(fw->data + offset + i));
|
|
else
|
|
word = *(uint32_t *)(fw->data + offset + i);
|
|
if(card->fpga_version > LEGACY_BUFFERS)
|
|
iowrite32(word, FLASH_BUF + i);
|
|
else
|
|
iowrite32(word, RX_BUF(card, 3) + i);
|
|
}
|
|
|
|
/* Specify block number and then trigger flash write */
|
|
iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK);
|
|
iowrite32(1, card->config_regs + WRITE_FLASH);
|
|
wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
|
|
}
|
|
|
|
release_firmware(fw);
|
|
iowrite32(0, card->config_regs + WRITE_FLASH);
|
|
iowrite32(0, card->config_regs + FPGA_MODE);
|
|
iowrite32(0, card->config_regs + FLASH_MODE);
|
|
dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");
|
|
return 0;
|
|
}
|
|
|
|
static irqreturn_t solos_irq(int irq, void *dev_id)
|
|
{
|
|
struct solos_card *card = dev_id;
|
|
int handled = 1;
|
|
|
|
iowrite32(0, card->config_regs + IRQ_CLEAR);
|
|
|
|
/* If we're up and running, just kick the tasklet to process TX/RX */
|
|
if (card->atmdev[0])
|
|
tasklet_schedule(&card->tlet);
|
|
else
|
|
wake_up(&card->fw_wq);
|
|
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
static void solos_bh(unsigned long card_arg)
|
|
{
|
|
struct solos_card *card = (void *)card_arg;
|
|
uint32_t card_flags;
|
|
uint32_t rx_done = 0;
|
|
int port;
|
|
|
|
/*
|
|
* Since fpga_tx() is going to need to read the flags under its lock,
|
|
* it can return them to us so that we don't have to hit PCI MMIO
|
|
* again for the same information
|
|
*/
|
|
card_flags = fpga_tx(card);
|
|
|
|
for (port = 0; port < card->nr_ports; port++) {
|
|
if (card_flags & (0x10 << port)) {
|
|
struct pkt_hdr _hdr, *header;
|
|
struct sk_buff *skb;
|
|
struct atm_vcc *vcc;
|
|
int size;
|
|
|
|
if (card->using_dma) {
|
|
skb = card->rx_skb[port];
|
|
card->rx_skb[port] = NULL;
|
|
|
|
dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
|
|
RX_DMA_SIZE, DMA_FROM_DEVICE);
|
|
|
|
header = (void *)skb->data;
|
|
size = le16_to_cpu(header->size);
|
|
skb_put(skb, size + sizeof(*header));
|
|
skb_pull(skb, sizeof(*header));
|
|
} else {
|
|
header = &_hdr;
|
|
|
|
rx_done |= 0x10 << port;
|
|
|
|
memcpy_fromio(header, RX_BUF(card, port), sizeof(*header));
|
|
|
|
size = le16_to_cpu(header->size);
|
|
if (size > (card->buffer_size - sizeof(*header))){
|
|
dev_warn(&card->dev->dev, "Invalid buffer size\n");
|
|
continue;
|
|
}
|
|
|
|
/* Use netdev_alloc_skb() because it adds NET_SKB_PAD of
|
|
* headroom, and ensures we can route packets back out an
|
|
* Ethernet interface (for example) without having to
|
|
* reallocate. Adding NET_IP_ALIGN also ensures that both
|
|
* PPPoATM and PPPoEoBR2684 packets end up aligned. */
|
|
skb = netdev_alloc_skb_ip_align(NULL, size + 1);
|
|
if (!skb) {
|
|
if (net_ratelimit())
|
|
dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
|
|
continue;
|
|
}
|
|
|
|
memcpy_fromio(skb_put(skb, size),
|
|
RX_BUF(card, port) + sizeof(*header),
|
|
size);
|
|
}
|
|
if (atmdebug) {
|
|
dev_info(&card->dev->dev, "Received: port %d\n", port);
|
|
dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
|
|
size, le16_to_cpu(header->vpi),
|
|
le16_to_cpu(header->vci));
|
|
print_buffer(skb);
|
|
}
|
|
|
|
switch (le16_to_cpu(header->type)) {
|
|
case PKT_DATA:
|
|
vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi),
|
|
le16_to_cpu(header->vci));
|
|
if (!vcc) {
|
|
if (net_ratelimit())
|
|
dev_warn(&card->dev->dev, "Received packet for unknown VPI.VCI %d.%d on port %d\n",
|
|
le16_to_cpu(header->vpi), le16_to_cpu(header->vci),
|
|
port);
|
|
dev_kfree_skb_any(skb);
|
|
break;
|
|
}
|
|
atm_charge(vcc, skb->truesize);
|
|
vcc->push(vcc, skb);
|
|
atomic_inc(&vcc->stats->rx);
|
|
break;
|
|
|
|
case PKT_STATUS:
|
|
if (process_status(card, port, skb) &&
|
|
net_ratelimit()) {
|
|
dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port);
|
|
print_buffer(skb);
|
|
}
|
|
dev_kfree_skb_any(skb);
|
|
break;
|
|
|
|
case PKT_COMMAND:
|
|
default: /* FIXME: Not really, surely? */
|
|
if (process_command(card, port, skb))
|
|
break;
|
|
spin_lock(&card->cli_queue_lock);
|
|
if (skb_queue_len(&card->cli_queue[port]) > 10) {
|
|
if (net_ratelimit())
|
|
dev_warn(&card->dev->dev, "Dropping console response on port %d\n",
|
|
port);
|
|
dev_kfree_skb_any(skb);
|
|
} else
|
|
skb_queue_tail(&card->cli_queue[port], skb);
|
|
spin_unlock(&card->cli_queue_lock);
|
|
break;
|
|
}
|
|
}
|
|
/* Allocate RX skbs for any ports which need them */
|
|
if (card->using_dma && card->atmdev[port] &&
|
|
!card->rx_skb[port]) {
|
|
/* Unlike the MMIO case (qv) we can't add NET_IP_ALIGN
|
|
* here; the FPGA can only DMA to addresses which are
|
|
* aligned to 4 bytes. */
|
|
struct sk_buff *skb = dev_alloc_skb(RX_DMA_SIZE);
|
|
if (skb) {
|
|
SKB_CB(skb)->dma_addr =
|
|
dma_map_single(&card->dev->dev, skb->data,
|
|
RX_DMA_SIZE, DMA_FROM_DEVICE);
|
|
iowrite32(SKB_CB(skb)->dma_addr,
|
|
card->config_regs + RX_DMA_ADDR(port));
|
|
card->rx_skb[port] = skb;
|
|
} else {
|
|
if (net_ratelimit())
|
|
dev_warn(&card->dev->dev, "Failed to allocate RX skb");
|
|
|
|
/* We'll have to try again later */
|
|
tasklet_schedule(&card->tlet);
|
|
}
|
|
}
|
|
}
|
|
if (rx_done)
|
|
iowrite32(rx_done, card->config_regs + FLAGS_ADDR);
|
|
|
|
return;
|
|
}
|
|
|
|
static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
|
|
{
|
|
struct hlist_head *head;
|
|
struct atm_vcc *vcc = NULL;
|
|
struct sock *s;
|
|
|
|
read_lock(&vcc_sklist_lock);
|
|
head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
|
|
sk_for_each(s, head) {
|
|
vcc = atm_sk(s);
|
|
if (vcc->dev == dev && vcc->vci == vci &&
|
|
vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE &&
|
|
test_bit(ATM_VF_READY, &vcc->flags))
|
|
goto out;
|
|
}
|
|
vcc = NULL;
|
|
out:
|
|
read_unlock(&vcc_sklist_lock);
|
|
return vcc;
|
|
}
|
|
|
|
static int popen(struct atm_vcc *vcc)
|
|
{
|
|
struct solos_card *card = vcc->dev->dev_data;
|
|
struct sk_buff *skb;
|
|
struct pkt_hdr *header;
|
|
|
|
if (vcc->qos.aal != ATM_AAL5) {
|
|
dev_warn(&card->dev->dev, "Unsupported ATM type %d\n",
|
|
vcc->qos.aal);
|
|
return -EINVAL;
|
|
}
|
|
|
|
skb = alloc_skb(sizeof(*header), GFP_KERNEL);
|
|
if (!skb) {
|
|
if (net_ratelimit())
|
|
dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
|
|
return -ENOMEM;
|
|
}
|
|
header = skb_put(skb, sizeof(*header));
|
|
|
|
header->size = cpu_to_le16(0);
|
|
header->vpi = cpu_to_le16(vcc->vpi);
|
|
header->vci = cpu_to_le16(vcc->vci);
|
|
header->type = cpu_to_le16(PKT_POPEN);
|
|
|
|
fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
|
|
|
|
set_bit(ATM_VF_ADDR, &vcc->flags);
|
|
set_bit(ATM_VF_READY, &vcc->flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void pclose(struct atm_vcc *vcc)
|
|
{
|
|
struct solos_card *card = vcc->dev->dev_data;
|
|
unsigned char port = SOLOS_CHAN(vcc->dev);
|
|
struct sk_buff *skb, *tmpskb;
|
|
struct pkt_hdr *header;
|
|
|
|
/* Remove any yet-to-be-transmitted packets from the pending queue */
|
|
spin_lock(&card->tx_queue_lock);
|
|
skb_queue_walk_safe(&card->tx_queue[port], skb, tmpskb) {
|
|
if (SKB_CB(skb)->vcc == vcc) {
|
|
skb_unlink(skb, &card->tx_queue[port]);
|
|
solos_pop(vcc, skb);
|
|
}
|
|
}
|
|
spin_unlock(&card->tx_queue_lock);
|
|
|
|
skb = alloc_skb(sizeof(*header), GFP_KERNEL);
|
|
if (!skb) {
|
|
dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
|
|
return;
|
|
}
|
|
header = skb_put(skb, sizeof(*header));
|
|
|
|
header->size = cpu_to_le16(0);
|
|
header->vpi = cpu_to_le16(vcc->vpi);
|
|
header->vci = cpu_to_le16(vcc->vci);
|
|
header->type = cpu_to_le16(PKT_PCLOSE);
|
|
|
|
skb_get(skb);
|
|
fpga_queue(card, port, skb, NULL);
|
|
|
|
if (!wait_event_timeout(card->param_wq, !skb_shared(skb), 5 * HZ))
|
|
dev_warn(&card->dev->dev,
|
|
"Timeout waiting for VCC close on port %d\n", port);
|
|
|
|
dev_kfree_skb(skb);
|
|
|
|
/* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the
|
|
tasklet has finished processing any incoming packets (and, more to
|
|
the point, using the vcc pointer). */
|
|
tasklet_unlock_wait(&card->tlet);
|
|
|
|
clear_bit(ATM_VF_ADDR, &vcc->flags);
|
|
|
|
return;
|
|
}
|
|
|
|
static int print_buffer(struct sk_buff *buf)
|
|
{
|
|
int len,i;
|
|
char msg[500];
|
|
char item[10];
|
|
|
|
len = buf->len;
|
|
for (i = 0; i < len; i++){
|
|
if(i % 8 == 0)
|
|
sprintf(msg, "%02X: ", i);
|
|
|
|
sprintf(item,"%02X ",*(buf->data + i));
|
|
strcat(msg, item);
|
|
if(i % 8 == 7) {
|
|
sprintf(item, "\n");
|
|
strcat(msg, item);
|
|
printk(KERN_DEBUG "%s", msg);
|
|
}
|
|
}
|
|
if (i % 8 != 0) {
|
|
sprintf(item, "\n");
|
|
strcat(msg, item);
|
|
printk(KERN_DEBUG "%s", msg);
|
|
}
|
|
printk(KERN_DEBUG "\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
|
|
struct atm_vcc *vcc)
|
|
{
|
|
int old_len;
|
|
unsigned long flags;
|
|
|
|
SKB_CB(skb)->vcc = vcc;
|
|
|
|
spin_lock_irqsave(&card->tx_queue_lock, flags);
|
|
old_len = skb_queue_len(&card->tx_queue[port]);
|
|
skb_queue_tail(&card->tx_queue[port], skb);
|
|
if (!old_len)
|
|
card->tx_mask |= (1 << port);
|
|
spin_unlock_irqrestore(&card->tx_queue_lock, flags);
|
|
|
|
/* Theoretically we could just schedule the tasklet here, but
|
|
that introduces latency we don't want -- it's noticeable */
|
|
if (!old_len)
|
|
fpga_tx(card);
|
|
}
|
|
|
|
static uint32_t fpga_tx(struct solos_card *card)
|
|
{
|
|
uint32_t tx_pending, card_flags;
|
|
uint32_t tx_started = 0;
|
|
struct sk_buff *skb;
|
|
struct atm_vcc *vcc;
|
|
unsigned char port;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&card->tx_lock, flags);
|
|
|
|
card_flags = ioread32(card->config_regs + FLAGS_ADDR);
|
|
/*
|
|
* The queue lock is required for _writing_ to tx_mask, but we're
|
|
* OK to read it here without locking. The only potential update
|
|
* that we could race with is in fpga_queue() where it sets a bit
|
|
* for a new port... but it's going to call this function again if
|
|
* it's doing that, anyway.
|
|
*/
|
|
tx_pending = card->tx_mask & ~card_flags;
|
|
|
|
for (port = 0; tx_pending; tx_pending >>= 1, port++) {
|
|
if (tx_pending & 1) {
|
|
struct sk_buff *oldskb = card->tx_skb[port];
|
|
if (oldskb) {
|
|
dma_unmap_single(&card->dev->dev, SKB_CB(oldskb)->dma_addr,
|
|
oldskb->len, DMA_TO_DEVICE);
|
|
card->tx_skb[port] = NULL;
|
|
}
|
|
spin_lock(&card->tx_queue_lock);
|
|
skb = skb_dequeue(&card->tx_queue[port]);
|
|
if (!skb)
|
|
card->tx_mask &= ~(1 << port);
|
|
spin_unlock(&card->tx_queue_lock);
|
|
|
|
if (skb && !card->using_dma) {
|
|
memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
|
|
tx_started |= 1 << port;
|
|
oldskb = skb; /* We're done with this skb already */
|
|
} else if (skb && card->using_dma) {
|
|
unsigned char *data = skb->data;
|
|
if ((unsigned long)data & card->dma_alignment) {
|
|
data = card->dma_bounce + (BUF_SIZE * port);
|
|
memcpy(data, skb->data, skb->len);
|
|
}
|
|
SKB_CB(skb)->dma_addr = dma_map_single(&card->dev->dev, data,
|
|
skb->len, DMA_TO_DEVICE);
|
|
card->tx_skb[port] = skb;
|
|
iowrite32(SKB_CB(skb)->dma_addr,
|
|
card->config_regs + TX_DMA_ADDR(port));
|
|
}
|
|
|
|
if (!oldskb)
|
|
continue;
|
|
|
|
/* Clean up and free oldskb now it's gone */
|
|
if (atmdebug) {
|
|
struct pkt_hdr *header = (void *)oldskb->data;
|
|
int size = le16_to_cpu(header->size);
|
|
|
|
skb_pull(oldskb, sizeof(*header));
|
|
dev_info(&card->dev->dev, "Transmitted: port %d\n",
|
|
port);
|
|
dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
|
|
size, le16_to_cpu(header->vpi),
|
|
le16_to_cpu(header->vci));
|
|
print_buffer(oldskb);
|
|
}
|
|
|
|
vcc = SKB_CB(oldskb)->vcc;
|
|
|
|
if (vcc) {
|
|
atomic_inc(&vcc->stats->tx);
|
|
solos_pop(vcc, oldskb);
|
|
} else {
|
|
dev_kfree_skb_irq(oldskb);
|
|
wake_up(&card->param_wq);
|
|
}
|
|
}
|
|
}
|
|
/* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */
|
|
if (tx_started)
|
|
iowrite32(tx_started, card->config_regs + FLAGS_ADDR);
|
|
|
|
spin_unlock_irqrestore(&card->tx_lock, flags);
|
|
return card_flags;
|
|
}
|
|
|
|
static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
|
|
{
|
|
struct solos_card *card = vcc->dev->dev_data;
|
|
struct pkt_hdr *header;
|
|
int pktlen;
|
|
|
|
pktlen = skb->len;
|
|
if (pktlen > (BUF_SIZE - sizeof(*header))) {
|
|
dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");
|
|
solos_pop(vcc, skb);
|
|
return 0;
|
|
}
|
|
|
|
if (!skb_clone_writable(skb, sizeof(*header))) {
|
|
int expand_by = 0;
|
|
int ret;
|
|
|
|
if (skb_headroom(skb) < sizeof(*header))
|
|
expand_by = sizeof(*header) - skb_headroom(skb);
|
|
|
|
ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC);
|
|
if (ret) {
|
|
dev_warn(&card->dev->dev, "pskb_expand_head failed.\n");
|
|
solos_pop(vcc, skb);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
header = skb_push(skb, sizeof(*header));
|
|
|
|
/* This does _not_ include the size of the header */
|
|
header->size = cpu_to_le16(pktlen);
|
|
header->vpi = cpu_to_le16(vcc->vpi);
|
|
header->vci = cpu_to_le16(vcc->vci);
|
|
header->type = cpu_to_le16(PKT_DATA);
|
|
|
|
fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct atmdev_ops fpga_ops = {
|
|
.open = popen,
|
|
.close = pclose,
|
|
.ioctl = NULL,
|
|
.send = psend,
|
|
.send_oam = NULL,
|
|
.phy_put = NULL,
|
|
.phy_get = NULL,
|
|
.change_qos = NULL,
|
|
.proc_read = NULL,
|
|
.owner = THIS_MODULE
|
|
};
|
|
|
|
static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
|
|
{
|
|
int err;
|
|
uint16_t fpga_ver;
|
|
uint8_t major_ver, minor_ver;
|
|
uint32_t data32;
|
|
struct solos_card *card;
|
|
|
|
card = kzalloc(sizeof(*card), GFP_KERNEL);
|
|
if (!card)
|
|
return -ENOMEM;
|
|
|
|
card->dev = dev;
|
|
init_waitqueue_head(&card->fw_wq);
|
|
init_waitqueue_head(&card->param_wq);
|
|
|
|
err = pci_enable_device(dev);
|
|
if (err) {
|
|
dev_warn(&dev->dev, "Failed to enable PCI device\n");
|
|
goto out;
|
|
}
|
|
|
|
err = dma_set_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
|
|
if (err) {
|
|
dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n");
|
|
goto out;
|
|
}
|
|
|
|
err = pci_request_regions(dev, "solos");
|
|
if (err) {
|
|
dev_warn(&dev->dev, "Failed to request regions\n");
|
|
goto out;
|
|
}
|
|
|
|
card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
|
|
if (!card->config_regs) {
|
|
dev_warn(&dev->dev, "Failed to ioremap config registers\n");
|
|
err = -ENOMEM;
|
|
goto out_release_regions;
|
|
}
|
|
card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
|
|
if (!card->buffers) {
|
|
dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
|
|
err = -ENOMEM;
|
|
goto out_unmap_config;
|
|
}
|
|
|
|
if (reset) {
|
|
iowrite32(1, card->config_regs + FPGA_MODE);
|
|
ioread32(card->config_regs + FPGA_MODE);
|
|
|
|
iowrite32(0, card->config_regs + FPGA_MODE);
|
|
ioread32(card->config_regs + FPGA_MODE);
|
|
}
|
|
|
|
data32 = ioread32(card->config_regs + FPGA_VER);
|
|
fpga_ver = (data32 & 0x0000FFFF);
|
|
major_ver = ((data32 & 0xFF000000) >> 24);
|
|
minor_ver = ((data32 & 0x00FF0000) >> 16);
|
|
card->fpga_version = FPGA_VERSION(major_ver,minor_ver);
|
|
if (card->fpga_version > LEGACY_BUFFERS)
|
|
card->buffer_size = BUF_SIZE;
|
|
else
|
|
card->buffer_size = OLD_BUF_SIZE;
|
|
dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
|
|
major_ver, minor_ver, fpga_ver);
|
|
|
|
if (fpga_ver < 37 && (fpga_upgrade || firmware_upgrade ||
|
|
db_fpga_upgrade || db_firmware_upgrade)) {
|
|
dev_warn(&dev->dev,
|
|
"FPGA too old; cannot upgrade flash. Use JTAG.\n");
|
|
fpga_upgrade = firmware_upgrade = 0;
|
|
db_fpga_upgrade = db_firmware_upgrade = 0;
|
|
}
|
|
|
|
/* Stopped using Atmel flash after 0.03-38 */
|
|
if (fpga_ver < 39)
|
|
card->atmel_flash = 1;
|
|
else
|
|
card->atmel_flash = 0;
|
|
|
|
data32 = ioread32(card->config_regs + PORTS);
|
|
card->nr_ports = (data32 & 0x000000FF);
|
|
|
|
if (card->fpga_version >= DMA_SUPPORTED) {
|
|
pci_set_master(dev);
|
|
card->using_dma = 1;
|
|
if (1) { /* All known FPGA versions so far */
|
|
card->dma_alignment = 3;
|
|
card->dma_bounce = kmalloc_array(card->nr_ports,
|
|
BUF_SIZE, GFP_KERNEL);
|
|
if (!card->dma_bounce) {
|
|
dev_warn(&card->dev->dev, "Failed to allocate DMA bounce buffers\n");
|
|
err = -ENOMEM;
|
|
/* Fallback to MMIO doesn't work */
|
|
goto out_unmap_both;
|
|
}
|
|
}
|
|
} else {
|
|
card->using_dma = 0;
|
|
/* Set RX empty flag for all ports */
|
|
iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
|
|
}
|
|
|
|
pci_set_drvdata(dev, card);
|
|
|
|
tasklet_init(&card->tlet, solos_bh, (unsigned long)card);
|
|
spin_lock_init(&card->tx_lock);
|
|
spin_lock_init(&card->tx_queue_lock);
|
|
spin_lock_init(&card->cli_queue_lock);
|
|
spin_lock_init(&card->param_queue_lock);
|
|
INIT_LIST_HEAD(&card->param_queue);
|
|
|
|
err = request_irq(dev->irq, solos_irq, IRQF_SHARED,
|
|
"solos-pci", card);
|
|
if (err) {
|
|
dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
|
|
goto out_unmap_both;
|
|
}
|
|
|
|
iowrite32(1, card->config_regs + IRQ_EN_ADDR);
|
|
|
|
if (fpga_upgrade)
|
|
flash_upgrade(card, 0);
|
|
|
|
if (firmware_upgrade)
|
|
flash_upgrade(card, 1);
|
|
|
|
if (db_fpga_upgrade)
|
|
flash_upgrade(card, 2);
|
|
|
|
if (db_firmware_upgrade)
|
|
flash_upgrade(card, 3);
|
|
|
|
err = atm_init(card, &dev->dev);
|
|
if (err)
|
|
goto out_free_irq;
|
|
|
|
if (card->fpga_version >= DMA_SUPPORTED &&
|
|
sysfs_create_group(&card->dev->dev.kobj, &gpio_attr_group))
|
|
dev_err(&card->dev->dev, "Could not register parameter group for GPIOs\n");
|
|
|
|
return 0;
|
|
|
|
out_free_irq:
|
|
iowrite32(0, card->config_regs + IRQ_EN_ADDR);
|
|
free_irq(dev->irq, card);
|
|
tasklet_kill(&card->tlet);
|
|
|
|
out_unmap_both:
|
|
kfree(card->dma_bounce);
|
|
pci_iounmap(dev, card->buffers);
|
|
out_unmap_config:
|
|
pci_iounmap(dev, card->config_regs);
|
|
out_release_regions:
|
|
pci_release_regions(dev);
|
|
out:
|
|
kfree(card);
|
|
return err;
|
|
}
|
|
|
|
static int atm_init(struct solos_card *card, struct device *parent)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < card->nr_ports; i++) {
|
|
struct sk_buff *skb;
|
|
struct pkt_hdr *header;
|
|
|
|
skb_queue_head_init(&card->tx_queue[i]);
|
|
skb_queue_head_init(&card->cli_queue[i]);
|
|
|
|
card->atmdev[i] = atm_dev_register("solos-pci", parent, &fpga_ops, -1, NULL);
|
|
if (!card->atmdev[i]) {
|
|
dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);
|
|
atm_remove(card);
|
|
return -ENODEV;
|
|
}
|
|
if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))
|
|
dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);
|
|
if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group))
|
|
dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i);
|
|
|
|
dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);
|
|
|
|
card->atmdev[i]->ci_range.vpi_bits = 8;
|
|
card->atmdev[i]->ci_range.vci_bits = 16;
|
|
card->atmdev[i]->dev_data = card;
|
|
card->atmdev[i]->phy_data = (void *)(unsigned long)i;
|
|
atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_FOUND);
|
|
|
|
skb = alloc_skb(sizeof(*header), GFP_KERNEL);
|
|
if (!skb) {
|
|
dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
|
|
continue;
|
|
}
|
|
|
|
header = skb_put(skb, sizeof(*header));
|
|
|
|
header->size = cpu_to_le16(0);
|
|
header->vpi = cpu_to_le16(0);
|
|
header->vci = cpu_to_le16(0);
|
|
header->type = cpu_to_le16(PKT_STATUS);
|
|
|
|
fpga_queue(card, i, skb, NULL);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void atm_remove(struct solos_card *card)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < card->nr_ports; i++) {
|
|
if (card->atmdev[i]) {
|
|
struct sk_buff *skb;
|
|
|
|
dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);
|
|
|
|
sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group);
|
|
atm_dev_deregister(card->atmdev[i]);
|
|
|
|
skb = card->rx_skb[i];
|
|
if (skb) {
|
|
dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
|
|
RX_DMA_SIZE, DMA_FROM_DEVICE);
|
|
dev_kfree_skb(skb);
|
|
}
|
|
skb = card->tx_skb[i];
|
|
if (skb) {
|
|
dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
|
|
skb->len, DMA_TO_DEVICE);
|
|
dev_kfree_skb(skb);
|
|
}
|
|
while ((skb = skb_dequeue(&card->tx_queue[i])))
|
|
dev_kfree_skb(skb);
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
static void fpga_remove(struct pci_dev *dev)
|
|
{
|
|
struct solos_card *card = pci_get_drvdata(dev);
|
|
|
|
/* Disable IRQs */
|
|
iowrite32(0, card->config_regs + IRQ_EN_ADDR);
|
|
|
|
/* Reset FPGA */
|
|
iowrite32(1, card->config_regs + FPGA_MODE);
|
|
(void)ioread32(card->config_regs + FPGA_MODE);
|
|
|
|
if (card->fpga_version >= DMA_SUPPORTED)
|
|
sysfs_remove_group(&card->dev->dev.kobj, &gpio_attr_group);
|
|
|
|
atm_remove(card);
|
|
|
|
free_irq(dev->irq, card);
|
|
tasklet_kill(&card->tlet);
|
|
|
|
kfree(card->dma_bounce);
|
|
|
|
/* Release device from reset */
|
|
iowrite32(0, card->config_regs + FPGA_MODE);
|
|
(void)ioread32(card->config_regs + FPGA_MODE);
|
|
|
|
pci_iounmap(dev, card->buffers);
|
|
pci_iounmap(dev, card->config_regs);
|
|
|
|
pci_release_regions(dev);
|
|
pci_disable_device(dev);
|
|
|
|
kfree(card);
|
|
}
|
|
|
|
static const struct pci_device_id fpga_pci_tbl[] = {
|
|
{ 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
|
|
{ 0, }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
|
|
|
|
static struct pci_driver fpga_driver = {
|
|
.name = "solos",
|
|
.id_table = fpga_pci_tbl,
|
|
.probe = fpga_probe,
|
|
.remove = fpga_remove,
|
|
};
|
|
|
|
|
|
static int __init solos_pci_init(void)
|
|
{
|
|
BUILD_BUG_ON(sizeof(struct solos_skb_cb) > sizeof(((struct sk_buff *)0)->cb));
|
|
|
|
printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
|
|
return pci_register_driver(&fpga_driver);
|
|
}
|
|
|
|
static void __exit solos_pci_exit(void)
|
|
{
|
|
pci_unregister_driver(&fpga_driver);
|
|
printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION);
|
|
}
|
|
|
|
module_init(solos_pci_init);
|
|
module_exit(solos_pci_exit);
|