mirror of https://gitee.com/openkylin/linux.git
Char: cyclades, dynamic ports
and save thus approx. 160k of .bss Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jiri Slaby
Linus Torvalds
parent
f2462bfe55
commit
dd025c0c7a
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@ -722,11 +722,6 @@ module_param_array(irq, int, NULL, 0);
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*/
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static struct cyclades_card cy_card[NR_CARDS];
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/* This is the per-channel data structure containing pointers, flags
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and variables for the port. This driver supports a maximum of NR_PORTS.
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*/
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static struct cyclades_port cy_port[NR_PORTS];
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static int cy_next_channel; /* next minor available */
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/*
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@ -855,13 +850,6 @@ static inline int serial_paranoia_check(struct cyclades_port *info,
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return 1;
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}
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if ((long)info < (long)(&cy_port[0]) ||
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(long)(&cy_port[NR_PORTS]) < (long)info) {
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printk(KERN_WARNING "cyc Warning: cyclades_port out of range "
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"for (%s) in %s\n", name, routine);
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return 1;
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}
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if (info->magic != CYCLADES_MAGIC) {
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printk(KERN_WARNING "cyc Warning: bad magic number for serial "
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"struct (%s) in %s\n", name, routine);
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@ -1025,7 +1013,7 @@ static void cyy_intr_chip(struct cyclades_card *cinfo, int chip,
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struct cyclades_port *info;
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struct tty_struct *tty;
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int char_count;
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int i, j, len, mdm_change, mdm_status, outch;
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int j, len, mdm_change, mdm_status, outch;
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int save_xir, channel, save_car;
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char data;
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@ -1037,8 +1025,7 @@ static void cyy_intr_chip(struct cyclades_card *cinfo, int chip,
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spin_lock(&cinfo->card_lock);
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save_xir = (u_char) readb(base_addr + (CyRIR << index));
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channel = (u_short) (save_xir & CyIRChannel);
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i = channel + chip * 4 + cinfo->first_line;
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info = &cy_port[i];
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info = &cinfo->ports[channel + chip * 4];
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save_car = readb(base_addr + (CyCAR << index));
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cy_writeb(base_addr + (CyCAR << index), save_xir);
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@ -1202,18 +1189,17 @@ static void cyy_intr_chip(struct cyclades_card *cinfo, int chip,
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spin_lock(&cinfo->card_lock);
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save_xir = (u_char) readb(base_addr + (CyTIR << index));
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channel = (u_short) (save_xir & CyIRChannel);
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i = channel + chip * 4 + cinfo->first_line;
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save_car = readb(base_addr + (CyCAR << index));
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cy_writeb(base_addr + (CyCAR << index), save_xir);
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/* validate the port# (as configured and open) */
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if ((i < 0) || (NR_PORTS <= i)) {
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if (channel + chip * 4 >= cinfo->nports) {
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cy_writeb(base_addr + (CySRER << index),
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readb(base_addr + (CySRER << index)) &
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~CyTxRdy);
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goto txend;
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}
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info = &cy_port[i];
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info = &cinfo->ports[channel + chip * 4];
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if (info->tty == NULL) {
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cy_writeb(base_addr + (CySRER << index),
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readb(base_addr + (CySRER << index)) &
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@ -1325,7 +1311,7 @@ static void cyy_intr_chip(struct cyclades_card *cinfo, int chip,
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spin_lock(&cinfo->card_lock);
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save_xir = (u_char) readb(base_addr + (CyMIR << index));
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channel = (u_short) (save_xir & CyIRChannel);
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info = &cy_port[channel + chip * 4 + cinfo->first_line];
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info = &cinfo->ports[channel + chip * 4];
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save_car = readb(base_addr + (CyCAR << index));
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cy_writeb(base_addr + (CyCAR << index), save_xir);
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@ -1726,7 +1712,7 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo)
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while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) {
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special_count = 0;
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delta_count = 0;
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info = &cy_port[channel + cinfo->first_line];
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info = &cinfo->ports[channel];
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if ((tty = info->tty) == NULL)
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continue;
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@ -1896,7 +1882,7 @@ static void cyz_poll(unsigned long arg)
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cyz_handle_cmd(cinfo);
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for (port = 0; port < cinfo->nports; port++) {
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info = &cy_port[port + cinfo->first_line];
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info = &cinfo->ports[port];
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tty = info->tty;
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ch_ctrl = &(zfw_ctrl->ch_ctrl[port]);
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buf_ctrl = &(zfw_ctrl->buf_ctrl[port]);
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@ -2468,13 +2454,20 @@ block_til_ready(struct tty_struct *tty, struct file *filp,
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static int cy_open(struct tty_struct *tty, struct file *filp)
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{
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struct cyclades_port *info;
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unsigned int i;
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int retval, line;
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line = tty->index;
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if ((line < 0) || (NR_PORTS <= line)) {
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return -ENODEV;
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}
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info = &cy_port[line];
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for (i = 0; i < NR_CARDS; i++)
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if (line < cy_card[i].first_line + cy_card[i].nports &&
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line >= cy_card[i].first_line)
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break;
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if (i >= NR_CARDS)
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return -ENODEV;
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info = &cy_card[i].ports[line - cy_card[i].first_line];
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if (info->line < 0) {
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return -ENODEV;
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}
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@ -4437,7 +4430,7 @@ static void cy_hangup(struct tty_struct *tty)
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* ---------------------------------------------------------------------
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*/
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static void __devinit cy_init_card(struct cyclades_card *cinfo)
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static int __devinit cy_init_card(struct cyclades_card *cinfo)
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{
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struct cyclades_port *info;
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u32 mailbox;
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@ -4459,10 +4452,15 @@ static void __devinit cy_init_card(struct cyclades_card *cinfo)
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nports = cinfo->nports = CyPORTS_PER_CHIP * cinfo->num_chips;
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}
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cinfo->ports = kzalloc(sizeof(*cinfo->ports) * nports, GFP_KERNEL);
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if (cinfo->ports == NULL) {
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printk(KERN_ERR "Cyclades: cannot allocate ports\n");
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return -ENOMEM;
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}
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for (port = cinfo->first_line; port < cinfo->first_line + nports;
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port++) {
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info = &cy_port[port];
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memset(info, 0, sizeof(*info));
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info = &cinfo->ports[port - cinfo->first_line];
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info->magic = CYCLADES_MAGIC;
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info->card = cinfo;
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info->line = port;
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@ -4525,6 +4523,7 @@ static void __devinit cy_init_card(struct cyclades_card *cinfo)
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#endif
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}
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#endif
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return 0;
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}
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/* initialize chips on Cyclom-Y card -- return number of valid
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@ -5094,13 +5093,11 @@ static void __devexit cy_pci_remove(struct pci_dev *pdev)
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pci_release_regions(pdev);
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cinfo->base_addr = NULL;
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for (i = cinfo->first_line; i < cinfo->first_line + cinfo->nports; i++){
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cy_port[i].line = -1;
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cy_port[i].magic = -1;
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}
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for (i = cinfo->first_line; i < cinfo->first_line +
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cinfo->nports; i++)
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tty_unregister_device(cy_serial_driver, i);
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cinfo->nports = 0;
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kfree(cinfo->ports);
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}
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static struct pci_driver cy_pci_driver = {
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@ -5116,7 +5113,7 @@ cyclades_get_proc_info(char *buf, char **start, off_t offset, int length,
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int *eof, void *data)
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{
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struct cyclades_port *info;
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int i;
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unsigned int i, j;
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int len = 0;
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off_t begin = 0;
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off_t pos = 0;
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@ -5130,22 +5127,23 @@ cyclades_get_proc_info(char *buf, char **start, off_t offset, int length,
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len += size;
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/* Output one line for each known port */
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for (i = 0; i < NR_PORTS && cy_port[i].line >= 0; i++) {
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info = &cy_port[i];
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for (i = 0; i < NR_CARDS; i++)
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for (j = 0; j < cy_card[i].nports; j++) {
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info = &cy_card[i].ports[j];
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if (info->count)
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size = sprintf(buf + len, "%3d %8lu %10lu %8lu %10lu "
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"%8lu %9lu %6ld\n", info->line,
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(cur_jifs - info->idle_stats.in_use) / HZ,
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info->idle_stats.xmit_bytes,
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(cur_jifs - info->idle_stats.xmit_idle) / HZ,
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info->idle_stats.recv_bytes,
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(cur_jifs - info->idle_stats.recv_idle) / HZ,
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info->idle_stats.overruns,
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size = sprintf(buf + len, "%3d %8lu %10lu %8lu "
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"%10lu %8lu %9lu %6ld\n", info->line,
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(cur_jifs - info->idle_stats.in_use) /
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HZ, info->idle_stats.xmit_bytes,
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(cur_jifs - info->idle_stats.xmit_idle)/
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HZ, info->idle_stats.recv_bytes,
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(cur_jifs - info->idle_stats.recv_idle)/
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HZ, info->idle_stats.overruns,
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(long)info->tty->ldisc.num);
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else
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size = sprintf(buf + len, "%3d %8lu %10lu %8lu %10lu "
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"%8lu %9lu %6ld\n",
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size = sprintf(buf + len, "%3d %8lu %10lu %8lu "
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"%10lu %8lu %9lu %6ld\n",
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info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L);
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len += size;
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pos = begin + len;
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@ -5211,7 +5209,7 @@ static const struct tty_operations cy_ops = {
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static int __init cy_init(void)
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{
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unsigned int i, nboards;
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unsigned int nboards;
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int retval = -ENOMEM;
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cy_serial_driver = alloc_tty_driver(NR_PORTS);
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@ -5242,11 +5240,6 @@ static int __init cy_init(void)
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goto err_frtty;
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}
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for (i = 0; i < NR_PORTS; i++) {
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cy_port[i].line = -1;
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cy_port[i].magic = -1;
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}
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/* the code below is responsible to find the boards. Each different
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type of board has its own detection routine. If a board is found,
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the next cy_card structure available is set by the detection
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@ -5275,6 +5268,7 @@ static int __init cy_init(void)
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static void __exit cy_cleanup_module(void)
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{
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struct cyclades_card *card;
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int i, e1;
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#ifndef CONFIG_CYZ_INTR
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@ -5290,22 +5284,24 @@ static void __exit cy_cleanup_module(void)
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#endif
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for (i = 0; i < NR_CARDS; i++) {
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if (cy_card[i].base_addr) {
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card = &cy_card[i];
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if (card->base_addr) {
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/* clear interrupt */
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cy_writeb(cy_card[i].base_addr + Cy_ClrIntr, 0);
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iounmap(cy_card[i].base_addr);
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if (cy_card[i].ctl_addr)
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iounmap(cy_card[i].ctl_addr);
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if (cy_card[i].irq
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cy_writeb(card->base_addr + Cy_ClrIntr, 0);
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iounmap(card->base_addr);
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if (card->ctl_addr)
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iounmap(card->ctl_addr);
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if (card->irq
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#ifndef CONFIG_CYZ_INTR
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&& !IS_CYC_Z(cy_card[i])
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&& !IS_CYC_Z(*card)
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#endif /* CONFIG_CYZ_INTR */
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)
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free_irq(cy_card[i].irq, &cy_card[i]);
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for (e1 = cy_card[i].first_line;
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e1 < cy_card[i].first_line +
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cy_card[i].nports; e1++)
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free_irq(card->irq, card);
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for (e1 = card->first_line;
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e1 < card->first_line +
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card->nports; e1++)
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tty_unregister_device(cy_serial_driver, e1);
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kfree(card->ports);
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}
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}
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@ -518,6 +518,7 @@ struct cyclades_card {
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int bus_index; /* address shift - 0 for ISA, 1 for PCI */
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int intr_enabled; /* FW Interrupt flag - 0 disabled, 1 enabled */
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spinlock_t card_lock;
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struct cyclades_port *ports;
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};
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/***************************************
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