From b28ec88a1d16b9db3160b19e68f0a7f5c381cbe5 Mon Sep 17 00:00:00 2001 From: Mark Hounschell Date: Thu, 20 Feb 2014 08:48:48 -0500 Subject: [PATCH] staging: dgap: Add in-kernel firmware loading support This patch adds in-kernel firmware loading support and removes support for the original userland firmware loading process. Signed-off-by: Mark Hounschell Signed-off-by: Greg Kroah-Hartman --- drivers/staging/dgap/dgap.c | 525 ++++++++++++++++++++++-------------- 1 file changed, 323 insertions(+), 202 deletions(-) diff --git a/drivers/staging/dgap/dgap.c b/drivers/staging/dgap/dgap.c index 6f07e271184d..21af5fa9545b 100644 --- a/drivers/staging/dgap/dgap.c +++ b/drivers/staging/dgap/dgap.c @@ -29,6 +29,32 @@ * */ +/* + * In the original out of kernel Digi dgap driver, firmware + * loading was done via user land to driver handshaking. + * + * For cards that support a concentrator (port expander), + * I believe the concentrator its self told the card which + * concentrator is actually attached and then that info + * was used to tell user land which concentrator firmware + * image was to be downloaded. I think even the BIOS or + * FEP images required could change with the connection + * of a particular concentrator. + * + * Since I have no access to any of these cards or + * concentrators, I cannot put the correct concentrator + * firmware file names into the firmware_info structure + * as is now done for the BIOS and FEP images. + * + * I think, but am not certain, that the cards supporting + * concentrators will function without them. So support + * of these cards has been left in this driver. + * + * In order to fully support those cards, they would + * either have to be acquired for dissection or maybe + * Digi International could provide some assistance. + */ +#undef DIGI_CONCENTRATORS_SUPPORTED #include #include @@ -48,6 +74,7 @@ #include #include #include +#include #include "dgap.h" @@ -191,11 +218,18 @@ static int dgap_ms_sleep(ulong ms); static char *dgap_ioctl_name(int cmd); static void dgap_do_bios_load(struct board_t *brd, uchar __user *ubios, int len); static void dgap_do_fep_load(struct board_t *brd, uchar __user *ufep, int len); +#ifdef DIGI_CONCENTRATORS_SUPPORTED static void dgap_do_conc_load(struct board_t *brd, uchar *uaddr, int len); -static void dgap_do_config_load(uchar __user *uaddr, int len); -static int dgap_after_config_loaded(void); +#endif +static int dgap_after_config_loaded(int board); static int dgap_finalize_board_init(struct board_t *brd); +static void dgap_get_vpd(struct board_t *brd); +static void dgap_do_reset_board(struct board_t *brd); +static void dgap_do_wait_for_bios(struct board_t *brd); +static void dgap_do_wait_for_fep(struct board_t *brd); +static void dgap_sysfs_create(struct board_t *brd); +static int dgap_firmware_load(struct pci_dev *pdev, int card_type); /* Driver load/unload functions */ int dgap_init_module(void); @@ -249,6 +283,24 @@ static ulong dgap_poll_time; /* Time of next poll */ static uint dgap_poll_stop; /* Used to tell poller to stop */ static struct timer_list dgap_poll_timer; +/* + SUPPORTED PRODUCTS + + Card Model Number of Ports Interface + ---------------------------------------------------------------- + Acceleport Xem 4 - 64 (EIA232 & EIA422) + Acceleport Xr 4 & 8 (EIA232) + Acceleport Xr 920 4 & 8 (EIA232) + Acceleport C/X 8 - 128 (EIA232) + Acceleport EPC/X 8 - 224 (EIA232) + Acceleport Xr/422 4 & 8 (EIA422) + Acceleport 2r/920 2 (EIA232) + Acceleport 4r/920 4 (EIA232) + Acceleport 8r/920 8 (EIA232) + + IBM 8-Port Asynchronous PCI Adapter (EIA232) + IBM 128-Port Asynchronous PCI Adapter (EIA232 & EIA422) +*/ static struct pci_device_id dgap_pci_tbl[] = { { DIGI_VID, PCI_DEVICE_XEM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, @@ -308,6 +360,35 @@ static struct pci_driver dgap_driver = { .remove = dgap_remove_one, }; +struct firmware_info { + uchar *conf_name; /* dgap.conf */ + uchar *bios_name; /* BIOS filename */ + uchar *fep_name; /* FEP filename */ + uchar *con_name; /* Concentrator filename FIXME*/ + int num; /* sequence number */ +}; + +/* + * Firmware - BIOS, FEP, and CONC filenames + */ +static struct firmware_info fw_info[] = { + { "dgap/dgap.conf", "dgap/sxbios.bin", "dgap/sxfep.bin", 0, 0 }, + { "dgap/dgap.conf", "dgap/cxpbios.bin", "dgap/cxpfep.bin", 0, 1 }, + { "dgap/dgap.conf", "dgap/cxpbios.bin", "dgap/cxpfep.bin", 0, 2 }, + { "dgap/dgap.conf", "dgap/pcibios.bin", "dgap/pcifep.bin", 0, 3 }, + { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", 0, 4 }, + { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", 0, 5 }, + { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", 0, 6 }, + { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", 0, 7 }, + { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", 0, 8 }, + { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", 0, 9 }, + { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", 0, 10 }, + { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", 0, 11 }, + { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", 0, 12 }, + { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", 0, 13 }, + { "dgap/dgap.conf", "dgap/sxbios.bin", "dgap/sxfep.bin", 0, 14 }, + {0,} +}; static char *dgap_state_text[] = { "Board Failed", @@ -477,6 +558,8 @@ int dgap_init_module(void) APR(("%s, Digi International Part Number %s\n", DG_NAME, DG_PART)); + dgap_driver_state = DRIVER_NEED_CONFIG_LOAD; + /* * Initialize global stuff */ @@ -505,6 +588,7 @@ int dgap_init_module(void) } else { dgap_create_driver_sysfiles(&dgap_driver); + dgap_driver_state = DRIVER_READY; } DPR_INIT(("Finished init_module. Returning %d\n", rc)); @@ -550,9 +634,6 @@ static int dgap_start(void) device_create(dgap_class, NULL, MKDEV(DIGI_DGAP_MAJOR, 0), NULL, "dgap_mgmt"); - device_create(dgap_class, NULL, - MKDEV(DIGI_DGAP_MAJOR, 1), - NULL, "dgap_downld"); dgap_Major_Control_Registered = TRUE; } @@ -608,6 +689,7 @@ static int dgap_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) if (rc == 0) { dgap_NumBoards++; DPR_INIT(("Incrementing numboards to %d\n", dgap_NumBoards)); + rc = dgap_firmware_load(pdev, ent->driver_data); } } return rc; @@ -907,6 +989,150 @@ static int dgap_finalize_board_init(struct board_t *brd) { return(0); } +static int dgap_firmware_load(struct pci_dev *pdev, int card_type) +{ + struct board_t *brd = dgap_Board[dgap_NumBoards - 1]; + const struct firmware *fw; + int ret; + + dgap_get_vpd(brd); + dgap_do_reset_board(brd); + + if ((fw_info[card_type].conf_name) && + (dgap_driver_state == DRIVER_NEED_CONFIG_LOAD)) { + ret = request_firmware(&fw, fw_info[card_type].conf_name, + &pdev->dev); + if (ret) { + pr_err("dgap: config file %s not found\n", + fw_info[card_type].conf_name); + return ret; + } + if (!dgap_config_buf) { + dgap_config_buf = kmalloc(fw->size + 1, GFP_ATOMIC); + if (!dgap_config_buf) { + release_firmware(fw); + return -ENOMEM; + } + } + + memcpy(dgap_config_buf, fw->data, fw->size); + release_firmware(fw); + dgap_config_buf[fw->size + 1] = '\0'; + + if (dgap_parsefile(&dgap_config_buf, TRUE) != 0) + return -EINVAL; + + dgap_driver_state = -1; + } + + ret = dgap_after_config_loaded(brd->boardnum); + if (ret) + return ret; + /* + * Match this board to a config the user created for us. + */ + brd->bd_config = + dgap_find_config(brd->type, brd->pci_bus, brd->pci_slot); + + /* + * Because the 4 port Xr products share the same PCI ID + * as the 8 port Xr products, if we receive a NULL config + * back, and this is a PAPORT8 board, retry with a + * PAPORT4 attempt as well. + */ + if (brd->type == PAPORT8 && !brd->bd_config) + brd->bd_config = + dgap_find_config(PAPORT4, brd->pci_bus, brd->pci_slot); + + if (!brd->bd_config) { + pr_err("dgap: No valid configuration found\n"); + return -EINVAL; + } + + dgap_tty_register(brd); + dgap_finalize_board_init(brd); + + if (fw_info[card_type].bios_name) { + ret = request_firmware(&fw, fw_info[card_type].bios_name, + &pdev->dev); + if (ret) { + pr_err("dgap: bios file %s not found\n", + fw_info[card_type].bios_name); + return ret; + } + dgap_do_bios_load(brd, (char *)fw->data, fw->size); + release_firmware(fw); + + /* Wait for BIOS to test board... */ + dgap_do_wait_for_bios(brd); + + if (brd->state != FINISHED_BIOS_LOAD) + return -ENXIO; + } + + if (fw_info[card_type].fep_name) { + ret = request_firmware(&fw, fw_info[card_type].fep_name, + &pdev->dev); + if (ret) { + pr_err("dgap: fep file %s not found\n", + fw_info[card_type].fep_name); + return ret; + } + dgap_do_fep_load(brd, (char *)fw->data, fw->size); + release_firmware(fw); + + /* Wait for FEP to load on board... */ + dgap_do_wait_for_fep(brd); + + if (brd->state != FINISHED_FEP_LOAD) + return -ENXIO; + } + +#ifdef DIGI_CONCENTRATORS_SUPPORTED + /* + * If this is a CX or EPCX, we need to see if the firmware + * is requesting a concentrator image from us. + */ + if ((bd->type == PCX) || (bd->type == PEPC)) { + chk_addr = (u16 *) (vaddr + DOWNREQ); + /* Nonzero if FEP is requesting concentrator image. */ + check = readw(chk_addr); + vaddr = brd->re_map_membase; + } + + if (fw_info[card_type].con_name && check && vaddr) { + ret = request_firmware(&fw, fw_info[card_type].con_name, + &pdev->dev); + if (ret) { + pr_err("dgap: conc file %s not found\n", + fw_info[card_type].con_name); + return ret; + } + /* Put concentrator firmware loading code here */ + offset = readw((u16 *) (vaddr + DOWNREQ)); + memcpy_toio(offset, fw->data, fw->size); + + dgap_do_conc_load(brd, (char *)fw->data, fw->size) + release_firmware(fw); + } +#endif + /* + * Do tty device initialization. + */ + ret = dgap_tty_init(brd); + if (ret < 0) { + dgap_tty_uninit(brd); + pr_err("dgap: Can't init tty devices (%d)\n", ret); + return ret; + } + + dgap_sysfs_create(brd); + + brd->state = BOARD_READY; + brd->dpastatus = BD_RUNNING; + + return 0; +} /* * Remap PCI memory. @@ -983,37 +1209,18 @@ static void dgap_poll_handler(ulong dummy) int i; struct board_t *brd; unsigned long lock_flags; - unsigned long lock_flags2; ulong new_time; dgap_poll_counter++; - /* - * If driver needs the config file still, - * keep trying to wake up the downloader to - * send us the file. - */ - if (dgap_driver_state == DRIVER_NEED_CONFIG_LOAD) { - /* - * Signal downloader, its got some work to do. - */ - DGAP_LOCK(dgap_dl_lock, lock_flags2); - if (dgap_dl_action != 1) { - dgap_dl_action = 1; - wake_up_interruptible(&dgap_dl_wait); - } - DGAP_UNLOCK(dgap_dl_lock, lock_flags2); - goto schedule_poller; - } /* * Do not start the board state machine until * driver tells us its up and running, and has * everything it needs. */ - else if (dgap_driver_state != DRIVER_READY) { + if (dgap_driver_state != DRIVER_READY) goto schedule_poller; - } /* * If we have just 1 board, or the system is not SMP, @@ -4656,112 +4863,54 @@ static int dgap_tty_ioctl(struct tty_struct *tty, unsigned int cmd, return(-ENOIOCTLCMD); } } -/* - * Loads the dgap.conf config file from the user. - */ -static void dgap_do_config_load(uchar __user *uaddr, int len) -{ - int orig_len = len; - char *to_addr; - uchar __user *from_addr = uaddr; - char buf[U2BSIZE]; - int n; - - to_addr = dgap_config_buf = kzalloc(len + 1, GFP_ATOMIC); - if (!dgap_config_buf) { - DPR_INIT(("dgap_do_config_load - unable to allocate memory for file\n")); - dgap_driver_state = DRIVER_NEED_CONFIG_LOAD; - return; - } - - n = U2BSIZE; - while (len) { - - if (n > len) - n = len; - - if (copy_from_user((char *) &buf, from_addr, n) == -1 ) - return; - - /* Copy data from buffer to kernel memory */ - memcpy(to_addr, buf, n); - - /* increment counts */ - len -= n; - to_addr += n; - from_addr += n; - n = U2BSIZE; - } - - dgap_config_buf[orig_len] = '\0'; - - to_addr = dgap_config_buf; - dgap_parsefile(&to_addr, TRUE); - - DPR_INIT(("dgap_config_load() finish\n")); - - return; -} - -static int dgap_after_config_loaded(void) +static int dgap_after_config_loaded(int board) { - int i = 0; - int rc = 0; - /* - * Register our ttys, now that we have the config loaded. + * Initialize KME waitqueues... */ - for (i = 0; i < dgap_NumBoards; ++i) { + init_waitqueue_head(&(dgap_Board[board]->kme_wait)); - /* - * Initialize KME waitqueues... - */ - init_waitqueue_head(&(dgap_Board[i]->kme_wait)); + /* + * allocate flip buffer for board. + */ + dgap_Board[board]->flipbuf = kmalloc(MYFLIPLEN, GFP_ATOMIC); + if (!dgap_Board[board]->flipbuf) + return -ENOMEM; - /* - * allocate flip buffer for board. - */ - dgap_Board[i]->flipbuf = kzalloc(MYFLIPLEN, GFP_ATOMIC); - dgap_Board[i]->flipflagbuf = kzalloc(MYFLIPLEN, GFP_ATOMIC); + dgap_Board[board]->flipflagbuf = kmalloc(MYFLIPLEN, GFP_ATOMIC); + if (!dgap_Board[board]->flipflagbuf) { + kfree(dgap_Board[board]->flipbuf); + return -ENOMEM; } - return rc; + return 0; } -/*======================================================================= - * - * usertoboard - copy from user space to board space. - * - *=======================================================================*/ -static int dgap_usertoboard(struct board_t *brd, char *to_addr, char __user *from_addr, int len) +/* + * Create pr and tty device entries + */ +static void dgap_sysfs_create(struct board_t *brd) { - char buf[U2BSIZE]; - int n = U2BSIZE; - - if (!brd || brd->magic != DGAP_BOARD_MAGIC) - return -EFAULT; - - while (len) { - if (n > len) - n = len; - - if (copy_from_user((char *) &buf, from_addr, n) == -1 ) { - return -EFAULT; - } + struct channel_t *ch; + int j = 0; - /* Copy data from buffer to card memory */ - memcpy_toio(to_addr, buf, n); + ch = brd->channels[0]; + for (j = 0; j < brd->nasync; j++, ch = brd->channels[j]) { + struct device *classp; + classp = tty_register_device(brd->SerialDriver, j, + &(ch->ch_bd->pdev->dev)); + ch->ch_tun.un_sysfs = classp; + dgap_create_tty_sysfs(&ch->ch_tun, classp); - /* increment counts */ - len -= n; - to_addr += n; - from_addr += n; - n = U2BSIZE; + classp = tty_register_device(brd->PrintDriver, j, + &(ch->ch_bd->pdev->dev)); + ch->ch_pun.un_sysfs = classp; + dgap_create_tty_sysfs(&ch->ch_pun, classp); } - return 0; + dgap_create_ports_sysfiles(brd); } @@ -4792,18 +4941,13 @@ static void dgap_do_bios_load(struct board_t *brd, uchar __user *ubios, int len) * Download bios */ offset = 0x1000; - if (dgap_usertoboard(brd, addr + offset, ubios, len) == -1 ) { - brd->state = BOARD_FAILED; - brd->dpastatus = BD_NOFEP; - return; - } + memcpy_toio(addr + offset, ubios, len); writel(0x0bf00401, addr); writel(0, (addr + 4)); /* Clear the reset, and change states. */ writeb(FEPCLR, brd->re_map_port); - brd->state = WAIT_BIOS_LOAD; } @@ -4814,6 +4958,8 @@ static void dgap_do_wait_for_bios(struct board_t *brd) { uchar *addr; u16 word; + u16 err1; + u16 err2; if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase) return; @@ -4821,22 +4967,31 @@ static void dgap_do_wait_for_bios(struct board_t *brd) addr = brd->re_map_membase; word = readw(addr + POSTAREA); - /* Check to see if BIOS thinks board is good. (GD). */ - if (word == *(u16 *) "GD") { - DPR_INIT(("GOT GD in memory, moving states.\n")); - brd->state = FINISHED_BIOS_LOAD; - return; + /* + * It can take 5-6 seconds for a board to + * pass the bios self test and post results. + * Give it 10 seconds. + */ + brd->wait_for_bios = 0; + while (brd->wait_for_bios < 1000) { + /* Check to see if BIOS thinks board is good. (GD). */ + if (word == *(u16 *) "GD") { + DPR_INIT(("GOT GD in memory, moving states.\n")); + brd->state = FINISHED_BIOS_LOAD; + return; + } + msleep_interruptible(10); + brd->wait_for_bios++; + word = readw(addr + POSTAREA); } - /* Give up on board after too long of time taken */ - if (brd->wait_for_bios++ > 5000) { - u16 err1 = readw(addr + SEQUENCE); - u16 err2 = readw(addr + ERROR); - APR(("***WARNING*** %s failed diagnostics. Error #(%x,%x).\n", - brd->name, err1, err2)); - brd->state = BOARD_FAILED; - brd->dpastatus = BD_NOFEP; - } + /* Gave up on board after too long of time taken */ + err1 = readw(addr + SEQUENCE); + err2 = readw(addr + ERROR); + APR(("***WARNING*** %s failed diagnostics. Error #(%x,%x).\n", + brd->name, err1, err2)); + brd->state = BOARD_FAILED; + brd->dpastatus = BD_NOBIOS; } @@ -4844,7 +4999,7 @@ static void dgap_do_wait_for_bios(struct board_t *brd) * Copies the FEP code from the user to the board, * and starts the FEP running. */ -static void dgap_do_fep_load(struct board_t *brd, uchar __user *ufep, int len) +static void dgap_do_fep_load(struct board_t *brd, uchar *ufep, int len) { uchar *addr; uint offset; @@ -4860,11 +5015,7 @@ static void dgap_do_fep_load(struct board_t *brd, uchar __user *ufep, int len) * Download FEP */ offset = 0x1000; - if (dgap_usertoboard(brd, addr + offset, ufep, len) == -1 ) { - brd->state = BOARD_FAILED; - brd->dpastatus = BD_NOFEP; - return; - } + memcpy_toio(addr + offset, ufep, len); /* * If board is a concentrator product, we need to give @@ -4889,9 +5040,6 @@ static void dgap_do_fep_load(struct board_t *brd, uchar __user *ufep, int len) writel(0xbfc01004, (addr + 0xc34)); writel(0x3, (addr + 0xc30)); - /* change states. */ - brd->state = WAIT_FEP_LOAD; - DPR_INIT(("dgap_do_fep_load() for board %s : finish\n", brd->name)); } @@ -4904,42 +5052,45 @@ static void dgap_do_wait_for_fep(struct board_t *brd) { uchar *addr; u16 word; + u16 err1; + u16 err2; if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase) return; addr = brd->re_map_membase; - - DPR_INIT(("dgap_do_wait_for_fep() for board %s : start. addr: %p\n", brd->name, addr)); - word = readw(addr + FEPSTAT); - /* Check to see if FEP is up and running now. */ - if (word == *(u16 *) "OS") { - DPR_INIT(("GOT OS in memory for board %s, moving states.\n", brd->name)); - brd->state = FINISHED_FEP_LOAD; + /* + * It can take 2-3 seconds for the FEP to + * be up and running. Give it 5 secs. + */ + brd->wait_for_fep = 0; + while (brd->wait_for_fep < 500) { + /* Check to see if FEP is up and running now. */ + if (word == *(u16 *) "OS") { + brd->state = FINISHED_FEP_LOAD; + /* + * Check to see if the board can support FEP5+ commands. + */ + word = readw(addr + FEP5_PLUS); + if (word == *(u16 *) "5A") + brd->bd_flags |= BD_FEP5PLUS; - /* - * Check to see if the board can support FEP5+ commands. - */ - word = readw(addr + FEP5_PLUS); - if (word == *(u16 *) "5A") { - DPR_INIT(("GOT 5A in memory for board %s, board supports extended FEP5 commands.\n", brd->name)); - brd->bd_flags |= BD_FEP5PLUS; + return; } - - return; + msleep_interruptible(10); + brd->wait_for_fep++; + word = readw(addr + FEPSTAT); } - /* Give up on board after too long of time taken */ - if (brd->wait_for_fep++ > 5000) { - u16 err1 = readw(addr + SEQUENCE); - u16 err2 = readw(addr + ERROR); - APR(("***WARNING*** FEPOS for %s not functioning. Error #(%x,%x).\n", - brd->name, err1, err2)); - brd->state = BOARD_FAILED; - brd->dpastatus = BD_NOFEP; - } + /* Gave up on board after too long of time taken */ + err1 = readw(addr + SEQUENCE); + err2 = readw(addr + ERROR); + APR(("***WARNING*** FEPOS for %s not functioning. Error #(%x,%x).\n", + brd->name, err1, err2)); + brd->state = BOARD_FAILED; + brd->dpastatus = BD_NOFEP; DPR_INIT(("dgap_do_wait_for_fep() for board %s : finish\n", brd->name)); } @@ -5003,6 +5154,7 @@ failed: } +#ifdef DIGI_CONCENTRATORS_SUPPORTED /* * Sends a concentrator image into the FEP5 board. */ @@ -5019,19 +5171,14 @@ static void dgap_do_conc_load(struct board_t *brd, uchar *uaddr, int len) offset = readw((u16 *) (vaddr + DOWNREQ)); to_dp = (struct downld_t *) (vaddr + (int) offset); - - /* - * The image was already read into kernel space, - * we do NOT need a user space read here - */ - memcpy_toio((char *) to_dp, uaddr, sizeof(struct downld_t)); + memcpy_toio(to_dp, uaddr, len); /* Tell card we have data for it */ writew(0, vaddr + (DOWNREQ)); brd->conc_dl_status = NO_PENDING_CONCENTRATOR_REQUESTS; } - +#endif #define EXPANSION_ROM_SIZE (64 * 1024) #define FEP5_ROM_MAGIC (0xFEFFFFFF) @@ -5148,8 +5295,6 @@ static void dgap_poll_tasklet(unsigned long data) ulong lock_flags2; char *vaddr; u16 head, tail; - u16 *chk_addr; - u16 check = 0; if (!bd || (bd->magic != DGAP_BOARD_MAGIC)) { APR(("dgap_poll_tasklet() - NULL or bad bd.\n")); @@ -5183,30 +5328,6 @@ static void dgap_poll_tasklet(unsigned long data) goto out; } - /* - * If this is a CX or EPCX, we need to see if the firmware - * is requesting a concentrator image from us. - */ - if ((bd->type == PCX) || (bd->type == PEPC)) { - chk_addr = (u16 *) (vaddr + DOWNREQ); - check = readw(chk_addr); - /* Nonzero if FEP is requesting concentrator image. */ - if (check) { - if (bd->conc_dl_status == NO_PENDING_CONCENTRATOR_REQUESTS) - bd->conc_dl_status = NEED_CONCENTRATOR; - /* - * Signal downloader, its got some work to do. - */ - DGAP_LOCK(dgap_dl_lock, lock_flags2); - if (dgap_dl_action != 1) { - dgap_dl_action = 1; - wake_up_interruptible(&dgap_dl_wait); - } - DGAP_UNLOCK(dgap_dl_lock, lock_flags2); - - } - } - eaddr = (struct ev_t *) (vaddr + EVBUF); /* Get our head and tail */ -- 2.30.2