hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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 <markh@compro.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mark Hounschell 2014-02-20 08:48:48 -05:00 committed by Greg Kroah-Hartman
parent ffc1c1da7f
commit b28ec88a1d
1 changed files with 324 additions and 203 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

527
drivers/staging/dgap/dgap.c
View File

@ -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 <linux/kernel.h>
#include <linux/module.h>
@ -48,6 +74,7 @@
#include <linux/string.h>
#include <linux/device.h>
#include <linux/kdev_t.h>
#include <linux/firmware.h>
#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)
static int dgap_after_config_loaded(int board)
{
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)
{
int i = 0;
int rc = 0;
/*
* Initialize KME waitqueues...
*/
init_waitqueue_head(&(dgap_Board[board]->kme_wait));
/*
* Register our ttys, now that we have the config loaded.
* allocate flip buffer for board.
*/
for (i = 0; i < dgap_NumBoards; ++i) {
dgap_Board[board]->flipbuf = kmalloc(MYFLIPLEN, GFP_ATOMIC);
if (!dgap_Board[board]->flipbuf)
return -ENOMEM;
/*
* Initialize KME waitqueues...
*/
init_waitqueue_head(&(dgap_Board[i]->kme_wait));
/*
* 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;
struct channel_t *ch;
int j = 0;
if (!brd || brd->magic != DGAP_BOARD_MAGIC)
return -EFAULT;
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);
while (len) {
if (n > len)
n = len;
if (copy_from_user((char *) &buf, from_addr, n) == -1 ) {
return -EFAULT;
}
/* Copy data from buffer to card memory */
memcpy_toio(to_addr, buf, n);
/* 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 */