ipoctal.c (92a19f9cec9a80ad93c06e115822deb729e2c6ad) ipoctal.c (2e124b4a390ca85325fae75764bef92f0547fa25)
1/**
2 * ipoctal.c
3 *
4 * driver for the GE IP-OCTAL boards
5 *
6 * Copyright (C) 2009-2012 CERN (www.cern.ch)
7 * Author: Nicolas Serafini, EIC2 SA
8 * Author: Samuel Iglesias Gonsalvez <siglesias@igalia.com>

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128 icount->rx = channel->stats.rx;
129 icount->tx = channel->stats.tx;
130 icount->frame = channel->stats.framing_err;
131 icount->parity = channel->stats.parity_err;
132 icount->brk = channel->stats.rcv_break;
133 return 0;
134}
135
1/**
2 * ipoctal.c
3 *
4 * driver for the GE IP-OCTAL boards
5 *
6 * Copyright (C) 2009-2012 CERN (www.cern.ch)
7 * Author: Nicolas Serafini, EIC2 SA
8 * Author: Samuel Iglesias Gonsalvez <siglesias@igalia.com>

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128 icount->rx = channel->stats.rx;
129 icount->tx = channel->stats.tx;
130 icount->frame = channel->stats.framing_err;
131 icount->parity = channel->stats.parity_err;
132 icount->brk = channel->stats.rcv_break;
133 return 0;
134}
135
136static void ipoctal_irq_rx(struct ipoctal_channel *channel,
137 struct tty_struct *tty, u8 sr)
136static void ipoctal_irq_rx(struct ipoctal_channel *channel, u8 sr)
138{
139 struct tty_port *port = &channel->tty_port;
140 unsigned char value;
141 unsigned char flag = TTY_NORMAL;
142 u8 isr;
143
144 do {
145 value = ioread8(&channel->regs->r.rhr);

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171 /* Check if there are more characters in RX FIFO
172 * If there are more, the isr register for this channel
173 * has enabled the RxRDY|FFULL bit.
174 */
175 isr = ioread8(&channel->block_regs->r.isr);
176 sr = ioread8(&channel->regs->r.sr);
177 } while (isr & channel->isr_rx_rdy_mask);
178
137{
138 struct tty_port *port = &channel->tty_port;
139 unsigned char value;
140 unsigned char flag = TTY_NORMAL;
141 u8 isr;
142
143 do {
144 value = ioread8(&channel->regs->r.rhr);

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170 /* Check if there are more characters in RX FIFO
171 * If there are more, the isr register for this channel
172 * has enabled the RxRDY|FFULL bit.
173 */
174 isr = ioread8(&channel->block_regs->r.isr);
175 sr = ioread8(&channel->regs->r.sr);
176 } while (isr & channel->isr_rx_rdy_mask);
177
179 tty_flip_buffer_push(tty);
178 tty_flip_buffer_push(port);
180}
181
182static void ipoctal_irq_tx(struct ipoctal_channel *channel)
183{
184 unsigned char value;
185 unsigned int *pointer_write = &channel->pointer_write;
186
187 if (channel->nb_bytes <= 0) {

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204 wake_up_interruptible(&channel->queue);
205 }
206 }
207}
208
209static void ipoctal_irq_channel(struct ipoctal_channel *channel)
210{
211 u8 isr, sr;
179}
180
181static void ipoctal_irq_tx(struct ipoctal_channel *channel)
182{
183 unsigned char value;
184 unsigned int *pointer_write = &channel->pointer_write;
185
186 if (channel->nb_bytes <= 0) {

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203 wake_up_interruptible(&channel->queue);
204 }
205 }
206}
207
208static void ipoctal_irq_channel(struct ipoctal_channel *channel)
209{
210 u8 isr, sr;
212 struct tty_struct *tty;
213
214 /* If there is no client, skip the check */
215 if (!atomic_read(&channel->open))
216 return;
217
211
212 /* If there is no client, skip the check */
213 if (!atomic_read(&channel->open))
214 return;
215
218 tty = tty_port_tty_get(&channel->tty_port);
219 if (!tty)
220 return;
221 /* The HW is organized in pair of channels. See which register we need
222 * to read from */
223 isr = ioread8(&channel->block_regs->r.isr);
224 sr = ioread8(&channel->regs->r.sr);
225
226 /* In case of RS-485, change from TX to RX when finishing TX.
227 * Half-duplex. */
228 if ((channel->board_id == IPACK1_DEVICE_ID_SBS_OCTAL_485) &&
229 (sr & SR_TX_EMPTY) && (channel->nb_bytes == 0)) {
230 iowrite8(CR_DISABLE_TX, &channel->regs->w.cr);
231 iowrite8(CR_CMD_NEGATE_RTSN, &channel->regs->w.cr);
232 iowrite8(CR_ENABLE_RX, &channel->regs->w.cr);
233 *channel->board_write = 1;
234 wake_up_interruptible(&channel->queue);
235 }
236
237 /* RX data */
238 if ((isr & channel->isr_rx_rdy_mask) && (sr & SR_RX_READY))
216 /* The HW is organized in pair of channels. See which register we need
217 * to read from */
218 isr = ioread8(&channel->block_regs->r.isr);
219 sr = ioread8(&channel->regs->r.sr);
220
221 /* In case of RS-485, change from TX to RX when finishing TX.
222 * Half-duplex. */
223 if ((channel->board_id == IPACK1_DEVICE_ID_SBS_OCTAL_485) &&
224 (sr & SR_TX_EMPTY) && (channel->nb_bytes == 0)) {
225 iowrite8(CR_DISABLE_TX, &channel->regs->w.cr);
226 iowrite8(CR_CMD_NEGATE_RTSN, &channel->regs->w.cr);
227 iowrite8(CR_ENABLE_RX, &channel->regs->w.cr);
228 *channel->board_write = 1;
229 wake_up_interruptible(&channel->queue);
230 }
231
232 /* RX data */
233 if ((isr & channel->isr_rx_rdy_mask) && (sr & SR_RX_READY))
239 ipoctal_irq_rx(channel, tty, sr);
234 ipoctal_irq_rx(channel, sr);
240
241 /* TX of each character */
242 if ((isr & channel->isr_tx_rdy_mask) && (sr & SR_TX_READY))
243 ipoctal_irq_tx(channel);
244
235
236 /* TX of each character */
237 if ((isr & channel->isr_tx_rdy_mask) && (sr & SR_TX_READY))
238 ipoctal_irq_tx(channel);
239
245 tty_flip_buffer_push(tty);
246 tty_kref_put(tty);
240 tty_flip_buffer_push(&channel->tty_port);
247}
248
249static irqreturn_t ipoctal_irq_handler(void *arg)
250{
251 unsigned int i;
252 struct ipoctal *ipoctal = (struct ipoctal *) arg;
253
254 /* Check all channels */

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242
243static irqreturn_t ipoctal_irq_handler(void *arg)
244{
245 unsigned int i;
246 struct ipoctal *ipoctal = (struct ipoctal *) arg;
247
248 /* Check all channels */

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