*
* 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
#include <linux/sysfs.h>
#include <linux/device.h>
#include <linux/kobject.h>
+#include <linux/firmware.h>
+#include <linux/ctype.h>
+#include <linux/swab.h>
-#define VERSION "0.04"
+#define VERSION "0.07"
#define PTAG "solos-pci"
#define CONFIG_RAM_SIZE 128
#define IRQ_EN_ADDR 0x78
#define FPGA_VER 0x74
#define IRQ_CLEAR 0x70
-#define BUG_FLAG 0x6C
+#define WRITE_FLASH 0x6C
+#define PORTS 0x68
+#define FLASH_BLOCK 0x64
+#define FLASH_BUSY 0x60
+#define FPGA_MODE 0x5C
+#define FLASH_MODE 0x58
+#define TX_DMA_ADDR(port) (0x40 + (4 * (port)))
+#define RX_DMA_ADDR(port) (0x30 + (4 * (port)))
#define DATA_RAM_SIZE 32768
-#define BUF_SIZE 4096
+#define BUF_SIZE 2048
+#define OLD_BUF_SIZE 4096 /* For FPGA versions <= 2*/
+#define FPGA_PAGE 528 /* FPGA flash page size*/
+#define SOLOS_PAGE 512 /* Solos flash page size*/
+#define FPGA_BLOCK (FPGA_PAGE * 8) /* FPGA flash block size*/
+#define SOLOS_BLOCK (SOLOS_PAGE * 8) /* Solos flash block size*/
-#define RX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2)
-#define TX_BUF(card, nr) ((card->buffers) + (nr)*BUF_SIZE*2 + BUF_SIZE)
+#define RX_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)
-static int debug = 0;
+#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 type;
};
+struct solos_skb_cb {
+ struct atm_vcc *vcc;
+ uint32_t dma_addr;
+};
+
+
+#define SKB_CB(skb) ((struct solos_skb_cb *)skb->cb)
+
#define PKT_DATA 0
#define PKT_COMMAND 1
#define PKT_POPEN 3
#define PKT_PCLOSE 4
+#define PKT_STATUS 5
struct solos_card {
void __iomem *config_regs;
void __iomem *buffers;
int nr_ports;
+ int tx_mask;
struct pci_dev *dev;
struct atm_dev *atmdev[4];
struct tasklet_struct tlet;
spinlock_t tx_lock;
spinlock_t tx_queue_lock;
spinlock_t cli_queue_lock;
+ spinlock_t param_queue_lock;
+ struct list_head param_queue;
struct sk_buff_head tx_queue[4];
struct sk_buff_head cli_queue[4];
+ struct sk_buff *tx_skb[4];
+ struct sk_buff *rx_skb[4];
+ wait_queue_head_t param_wq;
+ wait_queue_head_t fw_wq;
+ int using_dma;
+ int fpga_version;
+ int buffer_size;
+};
+
+
+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_DESCRIPTION("Solos PCI driver");
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
-MODULE_PARM_DESC(debug, "Enable Loopback");
+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_param(debug, int, 0444);
-module_param(atmdebug, int, 0444);
-
-static int opens;
+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 int fpga_tx(struct solos_card *);
+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 list_vccs(int vci);
+static void release_vccs(struct atm_dev *dev);
static int atm_init(struct solos_card *);
static void atm_remove(struct solos_card *);
static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
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 = (void *)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 = (void *)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, *end, *state_str, *snr, *attn;
+ int ver, rate_up, rate_down;
+
+ if (!card->atmdev[port])
+ return -ENODEV;
+
+ str = next_string(skb);
+ if (!str)
+ return -EIO;
+
+ ver = simple_strtol(str, NULL, 10);
+ 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;
+ }
+
+ rate_down = simple_strtol(str, &end, 10);
+ if (*end)
+ return -EIO;
+
+ str = next_string(skb);
+ if (!str)
+ return -EIO;
+ rate_up = simple_strtol(str, &end, 10);
+ if (*end)
+ return -EIO;
+
+ state_str = next_string(skb);
+ if (!state_str)
+ return -EIO;
+
+ /* Anything but 'Showtime' is down */
+ if (strcmp(state_str, "Showtime")) {
+ card->atmdev[port]->signal = ATM_PHY_SIG_LOST;
+ release_vccs(card->atmdev[port]);
+ 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;
+ card->atmdev[port]->signal = 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;
+
+ 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;
+
+ cmdpid = simple_strtol(&skb->data[1], NULL, 10);
+
+ 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 sk_buff *skb;
struct pkt_hdr *header;
-// dev_dbg(&card->dev->dev, "size: %d\n", size);
-
if (size > (BUF_SIZE - sizeof(*header))) {
dev_dbg(&card->dev->dev, "Command is too big. Dropping request\n");
return 0;
static DEVICE_ATTR(console, 0644, console_show, console_store);
+
+#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"
+
+#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 struct attribute_group solos_attr_group = {
+ .attrs = solos_attrs,
+ .name = "parameters",
+};
+
+static int flash_upgrade(struct solos_card *card, int chip)
+{
+ const struct firmware *fw;
+ const char *fw_name;
+ uint32_t data32 = 0;
+ int blocksize = 0;
+ int numblocks = 0;
+ int offset;
+
+ switch (chip) {
+ case 0:
+ fw_name = "solos-FPGA.bin";
+ blocksize = FPGA_BLOCK;
+ break;
+ case 1:
+ fw_name = "solos-Firmware.bin";
+ blocksize = SOLOS_BLOCK;
+ break;
+ case 2:
+ if (card->fpga_version > LEGACY_BUFFERS){
+ fw_name = "solos-db-FPGA.bin";
+ blocksize = FPGA_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";
+ blocksize = SOLOS_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");
+
+ 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);
+ data32 = 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(i = 0; i < blocksize; i += 4) {
+ uint32_t word = swahb32p((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;
- //ACK IRQ
iowrite32(0, card->config_regs + IRQ_CLEAR);
- //Disable IRQs from FPGA
- iowrite32(0, card->config_regs + IRQ_EN_ADDR);
- /* If we only do it when the device is open, we lose console
- messages */
- if (1 || opens)
+ /* 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);
- //Enable IRQs from FPGA
- iowrite32(1, card->config_regs + IRQ_EN_ADDR);
return IRQ_RETVAL(handled);
}
void solos_bh(unsigned long card_arg)
{
struct solos_card *card = (void *)card_arg;
- int port;
uint32_t card_flags;
- uint32_t tx_mask;
uint32_t rx_done = 0;
+ int port;
- card_flags = ioread32(card->config_regs + FLAGS_ADDR);
-
- /* The TX bits are set if the channel is busy; clear if not. We want to
- invoke fpga_tx() unless _all_ the bits for active channels are set */
- tx_mask = (1 << card->nr_ports) - 1;
- if ((card_flags & tx_mask) != tx_mask)
- fpga_tx(card);
+ /*
+ * 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 header;
+ struct pkt_hdr _hdr, *header;
struct sk_buff *skb;
struct atm_vcc *vcc;
int size;
- rx_done |= 0x10 << port;
+ if (card->using_dma) {
+ skb = card->rx_skb[port];
+ card->rx_skb[port] = NULL;
- memcpy_fromio(&header, RX_BUF(card, port), sizeof(header));
+ pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
+ RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
- size = le16_to_cpu(header.size);
+ header = (void *)skb->data;
+ size = le16_to_cpu(header->size);
+ skb_put(skb, size + sizeof(*header));
+ skb_pull(skb, sizeof(*header));
+ } else {
+ header = &_hdr;
- skb = alloc_skb(size, GFP_ATOMIC);
- if (!skb) {
- if (net_ratelimit())
- dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
- continue;
- }
+ 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;
+ }
- memcpy_fromio(skb_put(skb, size),
- RX_BUF(card, port) + sizeof(header),
- size);
+ skb = alloc_skb(size + 1, GFP_ATOMIC);
+ 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: device %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));
+ size, le16_to_cpu(header->vpi),
+ le16_to_cpu(header->vci));
print_buffer(skb);
}
- switch (le16_to_cpu(header.type)) {
+ 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));
+ 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 VCI.VPI %d.%d on port %d\n",
- le16_to_cpu(header.vci), le16_to_cpu(header.vpi),
+ le16_to_cpu(header->vci), le16_to_cpu(header->vpi),
port);
continue;
}
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]) {
+ struct sk_buff *skb = alloc_skb(RX_DMA_SIZE, GFP_ATOMIC);
+ if (skb) {
+ SKB_CB(skb)->dma_addr =
+ pci_map_single(card->dev, skb->data,
+ RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
+ 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);
vcc->vci);
}
} else {
- for(i=0; i<32; i++){
+ for(i = 0; i < VCC_HTABLE_SIZE; i++){
head = &vcc_hash[i];
sk_for_each(s, node, head) {
num_found ++;
return num_found;
}
+static void release_vccs(struct atm_dev *dev)
+{
+ int i;
+
+ write_lock_irq(&vcc_sklist_lock);
+ for (i = 0; i < VCC_HTABLE_SIZE; i++) {
+ struct hlist_head *head = &vcc_hash[i];
+ struct hlist_node *node, *tmp;
+ struct sock *s;
+ struct atm_vcc *vcc;
+
+ sk_for_each_safe(s, node, tmp, head) {
+ vcc = atm_sk(s);
+ if (vcc->dev == dev) {
+ vcc_release_async(vcc, -EPIPE);
+ sk_del_node_init(s);
+ }
+ }
+ }
+ write_unlock_irq(&vcc_sklist_lock);
+}
+
static int popen(struct atm_vcc *vcc)
{
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_ATOMIC);
if (!skb && net_ratelimit()) {
dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
}
header = (void *)skb_put(skb, sizeof(*header));
- header->size = cpu_to_le16(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);
-// dev_dbg(&card->dev->dev, "Open for vpi %d and vci %d on interface %d\n", vcc->vpi, vcc->vci, SOLOS_CHAN(vcc->dev));
- set_bit(ATM_VF_ADDR, &vcc->flags); // accept the vpi / vci
+ set_bit(ATM_VF_ADDR, &vcc->flags);
set_bit(ATM_VF_READY, &vcc->flags);
list_vccs(0);
- if (!opens)
- iowrite32(1, card->config_regs + IRQ_EN_ADDR);
-
- opens++; //count open PVCs
return 0;
}
}
header = (void *)skb_put(skb, sizeof(*header));
- header->size = cpu_to_le16(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);
fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
-// dev_dbg(&card->dev->dev, "Close for vpi %d and vci %d on interface %d\n", vcc->vpi, vcc->vci, SOLOS_CHAN(vcc->dev));
- if (!--opens)
- iowrite32(0, card->config_regs + IRQ_EN_ADDR);
-
clear_bit(ATM_VF_ADDR, &vcc->flags);
clear_bit(ATM_VF_READY, &vcc->flags);
struct atm_vcc *vcc)
{
int old_len;
+ unsigned long flags;
- *(void **)skb->cb = vcc;
+ SKB_CB(skb)->vcc = vcc;
- spin_lock(&card->tx_queue_lock);
+ 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);
- spin_unlock(&card->tx_queue_lock);
+ if (!old_len)
+ card->tx_mask |= (1 << port);
+ spin_unlock_irqrestore(&card->tx_queue_lock, flags);
- /* If TX might need to be started, do so */
+ /* 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 int fpga_tx(struct solos_card *card)
+static uint32_t fpga_tx(struct solos_card *card)
{
- uint32_t tx_pending;
+ uint32_t tx_pending, card_flags;
uint32_t tx_started = 0;
struct sk_buff *skb;
struct atm_vcc *vcc;
unsigned long flags;
spin_lock_irqsave(&card->tx_lock, flags);
-
- tx_pending = ioread32(card->config_regs + FLAGS_ADDR);
-
- dev_vdbg(&card->dev->dev, "TX Flags are %X\n", tx_pending);
-
- for (port = 0; port < card->nr_ports; port++) {
- if (!(tx_pending & (1 << port))) {
+
+ 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)
+ pci_unmap_single(card->dev, SKB_CB(oldskb)->dma_addr,
+ oldskb->len, PCI_DMA_TODEVICE);
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)
+ 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) {
+ SKB_CB(skb)->dma_addr = pci_map_single(card->dev, skb->data,
+ skb->len, PCI_DMA_TODEVICE);
+ 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) {
dev_info(&card->dev->dev, "Transmitted: port %d\n",
port);
- print_buffer(skb);
+ print_buffer(oldskb);
}
- memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
- vcc = *(void **)skb->cb;
+ vcc = SKB_CB(oldskb)->vcc;
if (vcc) {
atomic_inc(&vcc->stats->tx);
- solos_pop(vcc, skb);
+ solos_pop(vcc, oldskb);
} else
- dev_kfree_skb_irq(skb);
+ dev_kfree_skb_irq(oldskb);
- tx_started |= 1 << port; //Set TX full flag
}
}
+ /* 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 0;
+ return card_flags;
}
static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
{
struct solos_card *card = vcc->dev->dev_data;
- struct sk_buff *skb2 = NULL;
struct pkt_hdr *header;
+ int pktlen;
- //dev_dbg(&card->dev->dev, "psend called.\n");
- //dev_dbg(&card->dev->dev, "dev,vpi,vci = %d,%d,%d\n",SOLOS_CHAN(vcc->dev),vcc->vpi,vcc->vci);
-
- if (debug) {
- skb2 = atm_alloc_charge(vcc, skb->len, GFP_ATOMIC);
- if (skb2) {
- memcpy(skb2->data, skb->data, skb->len);
- skb_put(skb2, skb->len);
- vcc->push(vcc, skb2);
- atomic_inc(&vcc->stats->rx);
- }
- atomic_inc(&vcc->stats->tx);
- solos_pop(vcc, skb);
- return 0;
- }
-
- if (skb->len > (BUF_SIZE - sizeof(*header))) {
+ 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;
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 = (void *)skb_push(skb, sizeof(*header));
- header->size = cpu_to_le16(skb->len);
+ /* 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);
static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
- int err, i;
+ int err;
uint16_t fpga_ver;
uint8_t major_ver, minor_ver;
uint32_t data32;
struct solos_card *card;
- if (debug)
- return 0;
-
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) {
goto out;
}
+ err = pci_set_dma_mask(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_unmap_config;
}
-// for(i=0;i<64 ;i+=4){
-// data32=ioread32(card->buffers + i);
-// dev_dbg(&card->dev->dev, "%08lX\n",(unsigned long)data32);
-// }
+ if (reset) {
+ iowrite32(1, card->config_regs + FPGA_MODE);
+ data32 = ioread32(card->config_regs + FPGA_MODE);
- //Fill Config Mem with zeros
- for(i = 0; i < 128; i += 4)
- iowrite32(0, card->config_regs + i);
-
- //Set RX empty flags
- iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
+ iowrite32(0, card->config_regs + FPGA_MODE);
+ data32 = 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);
- card->nr_ports = 2; /* FIXME: Detect daughterboard */
+ if (card->fpga_version >= DMA_SUPPORTED){
+ card->using_dma = 1;
+ } else {
+ card->using_dma = 0;
+ /* Set RX empty flag for all ports */
+ iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
+ }
- err = atm_init(card);
- if (err)
- goto out_unmap_both;
+ data32 = ioread32(card->config_regs + PORTS);
+ card->nr_ports = (data32 & 0x000000FF);
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);
-/*
- // Set Loopback mode
- data32 = 0x00010000;
- iowrite32(data32,card->config_regs + FLAGS_ADDR);
-*/
-/*
- // Fill Buffers with zeros
- for (i = 0; i < BUF_SIZE * 8; i += 4)
- iowrite32(0, card->buffers + i);
-*/
-/*
- for(i = 0; i < (BUF_SIZE * 1); i += 4)
- iowrite32(0x12345678, card->buffers + i + (0*BUF_SIZE));
- for(i = 0; i < (BUF_SIZE * 1); i += 4)
- iowrite32(0xabcdef98, card->buffers + i + (1*BUF_SIZE));
-
- // Read Config Memory
- printk(KERN_DEBUG "Reading Config MEM\n");
- i = 0;
- for(i = 0; i < 16; i++) {
- data32=ioread32(card->buffers + i*(BUF_SIZE/2));
- printk(KERN_ALERT "Addr: %lX Data: %08lX\n",
- (unsigned long)(addr_start + i*(BUF_SIZE/2)),
- (unsigned long)data32);
- }
-*/
- //dev_dbg(&card->dev->dev, "Requesting IRQ: %d\n",dev->irq);
- err = request_irq(dev->irq, solos_irq, IRQF_DISABLED|IRQF_SHARED,
+ 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)
+ if (err) {
dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
+ goto out_unmap_both;
+ }
- // Enable IRQs
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);
+ if (err)
+ goto out_free_irq;
+
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:
+ pci_set_drvdata(dev, NULL);
pci_iounmap(dev, card->config_regs);
out_unmap_config:
pci_iounmap(dev, card->buffers);
{
int i;
- opens = 0;
-
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]);
}
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.vci_bits = 16;
card->atmdev[i]->dev_data = card;
card->atmdev[i]->phy_data = (void *)(unsigned long)i;
+ card->atmdev[i]->signal = ATM_PHY_SIG_UNKNOWN;
+
+ skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
+ if (!skb) {
+ dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
+ continue;
+ }
+
+ header = (void *)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;
}
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) {
+ pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
+ RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
+ dev_kfree_skb(skb);
+ }
+ skb = card->tx_skb[i];
+ if (skb) {
+ pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
+ skb->len, PCI_DMA_TODEVICE);
+ 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);
- if (debug)
- return;
+ /* Reset FPGA */
+ iowrite32(1, card->config_regs + FPGA_MODE);
+ (void)ioread32(card->config_regs + FPGA_MODE);
atm_remove(card);
- dev_vdbg(&dev->dev, "Freeing IRQ\n");
- // Disable IRQs from FPGA
- iowrite32(0, card->config_regs + IRQ_EN_ADDR);
free_irq(dev->irq, card);
tasklet_kill(&card->tlet);
- // iowrite32(0x01,pciregs);
- dev_vdbg(&dev->dev, "Unmapping PCI resource\n");
+ /* 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);
- dev_vdbg(&dev->dev, "Releasing PCI Region\n");
pci_release_regions(dev);
pci_disable_device(dev);
pci_set_drvdata(dev, NULL);
kfree(card);
-// dev_dbg(&card->dev->dev, "fpga_remove\n");
- return;
}
static struct pci_device_id fpga_pci_tbl[] __devinitdata = {
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff