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Date: Fri, 21 May 2010 09:51:54 -0700
From: Greg Kroah-Hartman <gregkh@...e.de>
To: linux-kernel@...r.kernel.org
Cc: Christoph Egger <siccegge@...fau.de>,
Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 25/25] serial: Tidy REMOTE_DEBUG
From: Christoph Egger <siccegge@...fau.de>
REMOTE_DEBUG does already appear in 2.2 kernel sources but didn't
appear as a config Option in the initial git import 2.6.12-rc. It's
currently just used in one single place of the linux kernel and should
probably be dropped totally
Signed-off-by: Christoph Egger <siccegge@...fau.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
drivers/char/serial167.c | 223 +---------------------------------------------
1 files changed, 1 insertions(+), 222 deletions(-)
diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c
index 78a62eb..ecbe479 100644
--- a/drivers/char/serial167.c
+++ b/drivers/char/serial167.c
@@ -176,23 +176,6 @@ static void config_setup(struct cyclades_port *);
static void show_status(int);
#endif
-#ifdef CONFIG_REMOTE_DEBUG
-static void debug_setup(void);
-void queueDebugChar(int c);
-int getDebugChar(void);
-
-#define DEBUG_PORT 1
-#define DEBUG_LEN 256
-
-typedef struct {
- int in;
- int out;
- unsigned char buf[DEBUG_LEN];
-} debugq;
-
-debugq debugiq;
-#endif
-
/*
* I have my own version of udelay(), as it is needed when initialising
* the chip, before the delay loop has been calibrated. Should probably
@@ -515,11 +498,6 @@ static irqreturn_t cd2401_tx_interrupt(int irq, void *dev_id)
/* determine the channel and change to that context */
channel = (u_short) (base_addr[CyLICR] >> 2);
-#ifdef CONFIG_REMOTE_DEBUG
- if (channel == DEBUG_PORT) {
- panic("TxInt on debug port!!!");
- }
-#endif
/* validate the port number (as configured and open) */
if ((channel < 0) || (NR_PORTS <= channel)) {
base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy);
@@ -634,14 +612,6 @@ static irqreturn_t cd2401_rx_interrupt(int irq, void *dev_id)
info->last_active = jiffies;
save_cnt = char_count = base_addr[CyRFOC];
-#ifdef CONFIG_REMOTE_DEBUG
- if (channel == DEBUG_PORT) {
- while (char_count--) {
- data = base_addr[CyRDR];
- queueDebugChar(data);
- }
- } else
-#endif
/* if there is nowhere to put the data, discard it */
if (info->tty == 0) {
while (char_count--) {
@@ -2195,9 +2165,7 @@ static int __init serial167_init(void)
port_num++;
info++;
}
-#ifdef CONFIG_REMOTE_DEBUG
- debug_setup();
-#endif
+
ret = request_irq(MVME167_IRQ_SER_ERR, cd2401_rxerr_interrupt, 0,
"cd2401_errors", cd2401_rxerr_interrupt);
if (ret) {
@@ -2518,193 +2486,4 @@ static int __init serial167_console_init(void)
console_initcall(serial167_console_init);
-#ifdef CONFIG_REMOTE_DEBUG
-void putDebugChar(int c)
-{
- volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
- unsigned long flags;
- volatile u_char sink;
- u_char ier;
- int port;
-
- local_irq_save(flags);
-
- /* Ensure transmitter is enabled! */
-
- port = DEBUG_PORT;
- base_addr[CyCAR] = (u_char) port;
- while (base_addr[CyCCR])
- ;
- base_addr[CyCCR] = CyENB_XMTR;
-
- ier = base_addr[CyIER];
- base_addr[CyIER] = CyTxMpty;
-
- while (1) {
- if (pcc2chip[PccSCCTICR] & 0x20) {
- /* We have a Tx int. Acknowledge it */
- sink = pcc2chip[PccTPIACKR];
- if ((base_addr[CyLICR] >> 2) == port) {
- base_addr[CyTDR] = c;
- base_addr[CyTEOIR] = 0;
- break;
- } else
- base_addr[CyTEOIR] = CyNOTRANS;
- }
- }
-
- base_addr[CyIER] = ier;
-
- local_irq_restore(flags);
-}
-
-int getDebugChar()
-{
- volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
- unsigned long flags;
- volatile u_char sink;
- u_char ier;
- int port;
- int i, c;
-
- i = debugiq.out;
- if (i != debugiq.in) {
- c = debugiq.buf[i];
- if (++i == DEBUG_LEN)
- i = 0;
- debugiq.out = i;
- return c;
- }
- /* OK, nothing in queue, wait in poll loop */
-
- local_irq_save(flags);
-
- /* Ensure receiver is enabled! */
-
- port = DEBUG_PORT;
- base_addr[CyCAR] = (u_char) port;
-#if 0
- while (base_addr[CyCCR])
- ;
- base_addr[CyCCR] = CyENB_RCVR;
-#endif
- ier = base_addr[CyIER];
- base_addr[CyIER] = CyRxData;
-
- while (1) {
- if (pcc2chip[PccSCCRICR] & 0x20) {
- /* We have a Rx int. Acknowledge it */
- sink = pcc2chip[PccRPIACKR];
- if ((base_addr[CyLICR] >> 2) == port) {
- int cnt = base_addr[CyRFOC];
- while (cnt-- > 0) {
- c = base_addr[CyRDR];
- if (c == 0)
- printk
- ("!! debug char is null (cnt=%d) !!",
- cnt);
- else
- queueDebugChar(c);
- }
- base_addr[CyREOIR] = 0;
- i = debugiq.out;
- if (i == debugiq.in)
- panic("Debug input queue empty!");
- c = debugiq.buf[i];
- if (++i == DEBUG_LEN)
- i = 0;
- debugiq.out = i;
- break;
- } else
- base_addr[CyREOIR] = CyNOTRANS;
- }
- }
-
- base_addr[CyIER] = ier;
-
- local_irq_restore(flags);
-
- return (c);
-}
-
-void queueDebugChar(int c)
-{
- int i;
-
- i = debugiq.in;
- debugiq.buf[i] = c;
- if (++i == DEBUG_LEN)
- i = 0;
- if (i != debugiq.out)
- debugiq.in = i;
-}
-
-static void debug_setup()
-{
- unsigned long flags;
- volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
- int i, cflag;
-
- cflag = B19200;
-
- local_irq_save(flags);
-
- for (i = 0; i < 4; i++) {
- base_addr[CyCAR] = i;
- base_addr[CyLICR] = i << 2;
- }
-
- debugiq.in = debugiq.out = 0;
-
- base_addr[CyCAR] = DEBUG_PORT;
-
- /* baud rate */
- i = cflag & CBAUD;
-
- base_addr[CyIER] = 0;
-
- base_addr[CyCMR] = CyASYNC;
- base_addr[CyLICR] = DEBUG_PORT << 2;
- base_addr[CyLIVR] = 0x5c;
-
- /* tx and rx baud rate */
-
- base_addr[CyTCOR] = baud_co[i];
- base_addr[CyTBPR] = baud_bpr[i];
- base_addr[CyRCOR] = baud_co[i] >> 5;
- base_addr[CyRBPR] = baud_bpr[i];
-
- /* set line characteristics according configuration */
-
- base_addr[CySCHR1] = 0;
- base_addr[CySCHR2] = 0;
- base_addr[CySCRL] = 0;
- base_addr[CySCRH] = 0;
- base_addr[CyCOR1] = Cy_8_BITS | CyPARITY_NONE;
- base_addr[CyCOR2] = 0;
- base_addr[CyCOR3] = Cy_1_STOP;
- base_addr[CyCOR4] = baud_cor4[i];
- base_addr[CyCOR5] = 0;
- base_addr[CyCOR6] = 0;
- base_addr[CyCOR7] = 0;
-
- write_cy_cmd(base_addr, CyINIT_CHAN);
- write_cy_cmd(base_addr, CyENB_RCVR);
-
- base_addr[CyCAR] = DEBUG_PORT; /* !!! Is this needed? */
-
- base_addr[CyRTPRL] = 2;
- base_addr[CyRTPRH] = 0;
-
- base_addr[CyMSVR1] = CyRTS;
- base_addr[CyMSVR2] = CyDTR;
-
- base_addr[CyIER] = CyRxData;
-
- local_irq_restore(flags);
-
-} /* debug_setup */
-
-#endif
-
MODULE_LICENSE("GPL");
--
1.7.0.3
--
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