diff options
Diffstat (limited to 'drivers/atm/solos-pci.c')
| -rw-r--r-- | drivers/atm/solos-pci.c | 1496 |
1 files changed, 1496 insertions, 0 deletions
diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c new file mode 100644 index 000000000..d3c30a28c --- /dev/null +++ b/drivers/atm/solos-pci.c @@ -0,0 +1,1496 @@ +// 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_bh(&card->cli_queue_lock); + skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]); + spin_unlock_bh(&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_bh(&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_bh(&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); |