diff options
Diffstat (limited to 'drivers/atm')
| -rw-r--r-- | drivers/atm/solos-attrlist.c | 70 | ||||
| -rw-r--r-- | drivers/atm/solos-pci.c | 824 |
2 files changed, 734 insertions, 160 deletions
diff --git a/drivers/atm/solos-attrlist.c b/drivers/atm/solos-attrlist.c new file mode 100644 index 000000000000..efa2808dd94d --- /dev/null +++ b/drivers/atm/solos-attrlist.c @@ -0,0 +1,70 @@ +SOLOS_ATTR_RO(DriverVersion) +SOLOS_ATTR_RO(APIVersion) +SOLOS_ATTR_RO(FirmwareVersion) +// SOLOS_ATTR_RO(DspVersion) +// SOLOS_ATTR_RO(CommonHandshake) +SOLOS_ATTR_RO(Connected) +SOLOS_ATTR_RO(OperationalMode) +SOLOS_ATTR_RO(State) +SOLOS_ATTR_RO(Watchdog) +SOLOS_ATTR_RO(OperationProgress) +SOLOS_ATTR_RO(LastFailed) +SOLOS_ATTR_RO(TxBitRate) +SOLOS_ATTR_RO(RxBitRate) +// SOLOS_ATTR_RO(DeltACTATPds) +// SOLOS_ATTR_RO(DeltACTATPus) +SOLOS_ATTR_RO(TxATTNDR) +SOLOS_ATTR_RO(RxATTNDR) +SOLOS_ATTR_RO(AnnexType) +SOLOS_ATTR_RO(GeneralFailure) +SOLOS_ATTR_RO(InterleaveDpDn) +SOLOS_ATTR_RO(InterleaveDpUp) +SOLOS_ATTR_RO(RSCorrectedErrorsDn) +SOLOS_ATTR_RO(RSUnCorrectedErrorsDn) +SOLOS_ATTR_RO(RSCorrectedErrorsUp) +SOLOS_ATTR_RO(RSUnCorrectedErrorsUp) +SOLOS_ATTR_RO(InterleaveRDn) +SOLOS_ATTR_RO(InterleaveRUp) +SOLOS_ATTR_RO(ShowtimeStart) +SOLOS_ATTR_RO(ATURVendor) +SOLOS_ATTR_RO(ATUCCountry) +SOLOS_ATTR_RO(ATURANSIRev) +SOLOS_ATTR_RO(ATURANSISTD) +SOLOS_ATTR_RO(ATUCANSIRev) +SOLOS_ATTR_RO(ATUCANSIId) +SOLOS_ATTR_RO(ATUCANSISTD) +SOLOS_ATTR_RO(DataBoost) +SOLOS_ATTR_RO(LocalITUCountryCode) +SOLOS_ATTR_RO(LocalSEF) +SOLOS_ATTR_RO(LocalEndLOS) +SOLOS_ATTR_RO(LocalSNRMargin) +SOLOS_ATTR_RO(LocalLineAttn) +SOLOS_ATTR_RO(RawAttn) +SOLOS_ATTR_RO(LocalTxPower) +SOLOS_ATTR_RO(RemoteTxPower) +SOLOS_ATTR_RO(RemoteSEF) +SOLOS_ATTR_RO(RemoteLOS) +SOLOS_ATTR_RO(RemoteLineAttn) +SOLOS_ATTR_RO(RemoteSNRMargin) +SOLOS_ATTR_RO(LineUpCount) +SOLOS_ATTR_RO(SRACnt) +SOLOS_ATTR_RO(SRACntUp) +SOLOS_ATTR_RO(ProfileStatus) +SOLOS_ATTR_RW(Action) +SOLOS_ATTR_RW(ActivateLine) +SOLOS_ATTR_RO(LineStatus) +SOLOS_ATTR_RW(HostControl) +SOLOS_ATTR_RW(AutoStart) +SOLOS_ATTR_RW(Failsafe) +SOLOS_ATTR_RW(ShowtimeLed) +SOLOS_ATTR_RW(Retrain) +SOLOS_ATTR_RW(Defaults) +SOLOS_ATTR_RW(LineMode) +SOLOS_ATTR_RW(Profile) +SOLOS_ATTR_RW(DetectNoise) +SOLOS_ATTR_RO(SupportedAnnexes) +SOLOS_ATTR_RO(Status) +SOLOS_ATTR_RO(TotalStart) +SOLOS_ATTR_RO(RecentShowtimeStart) +SOLOS_ATTR_RO(TotalRxBlocks) +SOLOS_ATTR_RO(TotalTxBlocks) diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c index 89d7a6e94c9c..be204308cc1b 100644 --- a/drivers/atm/solos-pci.c +++ b/drivers/atm/solos-pci.c @@ -9,6 +9,7 @@ * * 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 @@ -36,8 +37,11 @@ #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 @@ -45,16 +49,31 @@ #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 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) -static int debug = 0; +#define RX_DMA_SIZE 2048 + +static int reset = 0; static int atmdebug = 0; +static int firmware_upgrade = 0; +static int fpga_upgrade = 0; struct pkt_hdr { __le16 size; @@ -63,23 +82,48 @@ struct pkt_hdr { __le16 type; }; +struct solos_skb_cb { + struct atm_vcc *vcc; + uint32_t dma_addr; +}; + + +#define SKB_CB(skb) ((struct solos_skb_cb *)skb->cb) + #define PKT_DATA 0 #define PKT_COMMAND 1 #define PKT_POPEN 3 #define PKT_PCLOSE 4 +#define PKT_STATUS 5 struct solos_card { void __iomem *config_regs; void __iomem *buffers; int nr_ports; + int tx_mask; struct pci_dev *dev; struct atm_dev *atmdev[4]; struct tasklet_struct tlet; spinlock_t tx_lock; spinlock_t tx_queue_lock; spinlock_t cli_queue_lock; + spinlock_t param_queue_lock; + struct list_head param_queue; struct sk_buff_head tx_queue[4]; struct sk_buff_head cli_queue[4]; + struct sk_buff *tx_skb[4]; + struct sk_buff *rx_skb[4]; + wait_queue_head_t param_wq; + wait_queue_head_t fw_wq; + int using_dma; +}; + + +struct solos_param { + struct list_head list; + pid_t pid; + int port; + struct sk_buff *response; }; #define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data) @@ -88,19 +132,22 @@ MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>"); MODULE_DESCRIPTION("Solos PCI driver"); MODULE_VERSION(VERSION); MODULE_LICENSE("GPL"); -MODULE_PARM_DESC(debug, "Enable Loopback"); +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_param(reset, int, 0444); +module_param(atmdebug, int, 0644); +module_param(firmware_upgrade, int, 0444); +module_param(fpga_upgrade, int, 0444); static void fpga_queue(struct solos_card *card, int 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); @@ -115,6 +162,264 @@ static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb) 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 (!str) + 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) { @@ -140,8 +445,6 @@ static int send_command(struct solos_card *card, int dev, const char *buf, size_ 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; @@ -180,82 +483,181 @@ static ssize_t console_store(struct device *dev, struct device_attribute *attr, 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; + + if (chip == 0) { + fw_name = "solos-FPGA.bin"; + blocksize = FPGA_BLOCK; + } else { + fw_name = "solos-Firmware.bin"; + blocksize = SOLOS_BLOCK; + } + + 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 */ + dev_info(&card->dev->dev, "Set FPGA Flash mode to %s Chip Erase\n", + chip?"Solos":"FPGA"); + 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)); + 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)); - memcpy_fromio(skb_put(skb, size), - RX_BUF(card, port) + sizeof(header), - size); + size = le16_to_cpu(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; } @@ -264,19 +666,50 @@ void solos_bh(unsigned long card_arg) 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); @@ -326,7 +759,7 @@ static int list_vccs(int vci) 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 ++; @@ -342,6 +775,28 @@ static int list_vccs(int vci) 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) { @@ -349,6 +804,12 @@ 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"); @@ -356,22 +817,17 @@ static int popen(struct atm_vcc *vcc) } 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; } @@ -389,17 +845,13 @@ static void pclose(struct atm_vcc *vcc) } 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); @@ -439,22 +891,26 @@ static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb, 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; @@ -462,69 +918,77 @@ static int fpga_tx(struct solos_card *card) 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; @@ -539,6 +1003,7 @@ static int psend(struct atm_vcc *vcc, struct sk_buff *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; } @@ -546,7 +1011,8 @@ static int psend(struct atm_vcc *vcc, struct sk_buff *skb) 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); @@ -573,20 +1039,19 @@ static struct atmdev_ops fpga_ops = { 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) { @@ -594,6 +1059,12 @@ static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id) goto out; } + err = pci_set_dma_mask(dev, DMA_32BIT_MASK); + 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"); @@ -611,17 +1082,13 @@ static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id) 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); -// } - - //Fill Config Mem with zeros - for(i = 0; i < 128; i += 4) - iowrite32(0, card->config_regs + i); + if (reset) { + iowrite32(1, card->config_regs + FPGA_MODE); + data32 = ioread32(card->config_regs + FPGA_MODE); - //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); @@ -630,55 +1097,53 @@ static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id) 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 (0 && fpga_ver > 27) + card->using_dma = 1; + else { + /* 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); + + 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); @@ -693,9 +1158,10 @@ static int atm_init(struct solos_card *card) { 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]); @@ -707,6 +1173,8 @@ static int atm_init(struct solos_card *card) } 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); @@ -714,6 +1182,22 @@ static int atm_init(struct solos_card *card) 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; } @@ -724,8 +1208,28 @@ static void atm_remove(struct solos_card *card) 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); + } } } @@ -733,31 +1237,31 @@ static void atm_remove(struct solos_card *card) 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 = { |