| /* |
| * 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> |
| #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 pci_dev *pdev = to_pci_dev(dev); |
| struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr); |
| struct solos_card *card = pci_get_drvdata(pdev); |
| 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 pci_dev *pdev = to_pci_dev(dev); |
| struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr); |
| struct solos_card *card = pci_get_drvdata(pdev); |
| 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 pci_dev *pdev = to_pci_dev(dev); |
| struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr); |
| struct solos_card *card = pci_get_drvdata(pdev); |
| 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 struct atmdev_ops fpga_ops = { |
| .open = popen, |
| .close = pclose, |
| .ioctl = NULL, |
| .getsockopt = NULL, |
| .setsockopt = 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(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); |