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Diffstat (limited to 'board/evb64260/mpsc.c')
-rw-r--r--board/evb64260/mpsc.c162
1 files changed, 74 insertions, 88 deletions
diff --git a/board/evb64260/mpsc.c b/board/evb64260/mpsc.c
index ee623ca..98ac7f6 100644
--- a/board/evb64260/mpsc.c
+++ b/board/evb64260/mpsc.c
@@ -32,6 +32,8 @@
#include <malloc.h>
#include "mpsc.h"
+DECLARE_GLOBAL_DATA_PTR;
+
int (*mpsc_putchar)(char ch) = mpsc_putchar_early;
static volatile unsigned int *rx_desc_base=NULL;
@@ -115,7 +117,6 @@ struct _tag_mirror_hack {
int
mpsc_putchar_early(char ch)
{
- DECLARE_GLOBAL_DATA_PTR;
int mpsc=CHANNEL;
int temp=GTREGREAD_MIRROR(GALMPSC_CHANNELREG_2,mpsc,GALMPSC_REG_GAP);
galmpsc_set_tcschar(mpsc,ch);
@@ -177,79 +178,82 @@ mpsc_putchar_sdma(char ch)
return 0;
}
-char
-mpsc_getchar(void)
+char mpsc_getchar (void)
{
- DECLARE_GLOBAL_DATA_PTR;
- static unsigned int done = 0;
- volatile char ch;
- unsigned int len=0, idx=0, temp;
-
- volatile unsigned int *p;
-
-
- do {
- p=&rx_desc_base[rx_desc_index*8];
-
- INVALIDATE_DCACHE(&p[0], &p[1]);
- /* Wait for character */
- while (p[1] & DESC_OWNER){
- udelay(100);
- INVALIDATE_DCACHE(&p[0], &p[1]);
- }
-
- /* Handle error case */
- if (p[1] & (1<<15)) {
- printf("oops, error: %08x\n", p[1]);
-
- temp = GTREGREAD_MIRROR(GALMPSC_CHANNELREG_2,CHANNEL,GALMPSC_REG_GAP);
- temp |= (1 << 23);
- GT_REG_WRITE_MIRROR(GALMPSC_CHANNELREG_2, CHANNEL,GALMPSC_REG_GAP, temp);
-
- /* Can't poll on abort bit, so we just wait. */
- udelay(100);
+ static unsigned int done = 0;
+ volatile char ch;
+ unsigned int len = 0, idx = 0, temp;
- galsdma_enable_rx();
- }
-
- /* Number of bytes left in this descriptor */
- len = p[0] & 0xffff;
-
- if (len) {
- /* Where to look */
- idx = 5;
- if (done > 3) idx = 4;
- if (done > 7) idx = 7;
- if (done > 11) idx = 6;
-
- INVALIDATE_DCACHE(&p[idx], &p[idx+1]);
- ch = p[idx] & 0xff;
- done++;
- }
+ volatile unsigned int *p;
- if (done < len) {
- /* this descriptor has more bytes still
- * shift down the char we just read, and leave the
- * buffer in place for the next time around
- */
- p[idx] = p[idx] >> 8;
- FLUSH_DCACHE(&p[idx], &p[idx+1]);
- }
- if (done == len) {
- /* nothing left in this descriptor.
- * go to next one
- */
- p[1] = DESC_OWNER | DESC_FIRST | DESC_LAST;
- p[0] = 0x00100000;
- FLUSH_DCACHE(&p[0], &p[1]);
- /* Next descriptor */
- rx_desc_index = (rx_desc_index + 1) % RX_DESC;
- done = 0;
- }
- } while (len==0); /* galileo bug.. len might be zero */
-
- return ch;
+ do {
+ p = &rx_desc_base[rx_desc_index * 8];
+
+ INVALIDATE_DCACHE (&p[0], &p[1]);
+ /* Wait for character */
+ while (p[1] & DESC_OWNER) {
+ udelay (100);
+ INVALIDATE_DCACHE (&p[0], &p[1]);
+ }
+
+ /* Handle error case */
+ if (p[1] & (1 << 15)) {
+ printf ("oops, error: %08x\n", p[1]);
+
+ temp = GTREGREAD_MIRROR (GALMPSC_CHANNELREG_2,
+ CHANNEL, GALMPSC_REG_GAP);
+ temp |= (1 << 23);
+ GT_REG_WRITE_MIRROR (GALMPSC_CHANNELREG_2, CHANNEL,
+ GALMPSC_REG_GAP, temp);
+
+ /* Can't poll on abort bit, so we just wait. */
+ udelay (100);
+
+ galsdma_enable_rx ();
+ }
+
+ /* Number of bytes left in this descriptor */
+ len = p[0] & 0xffff;
+
+ if (len) {
+ /* Where to look */
+ idx = 5;
+ if (done > 3)
+ idx = 4;
+ if (done > 7)
+ idx = 7;
+ if (done > 11)
+ idx = 6;
+
+ INVALIDATE_DCACHE (&p[idx], &p[idx + 1]);
+ ch = p[idx] & 0xff;
+ done++;
+ }
+
+ if (done < len) {
+ /* this descriptor has more bytes still
+ * shift down the char we just read, and leave the
+ * buffer in place for the next time around
+ */
+ p[idx] = p[idx] >> 8;
+ FLUSH_DCACHE (&p[idx], &p[idx + 1]);
+ }
+
+ if (done == len) {
+ /* nothing left in this descriptor.
+ * go to next one
+ */
+ p[1] = DESC_OWNER | DESC_FIRST | DESC_LAST;
+ p[0] = 0x00100000;
+ FLUSH_DCACHE (&p[0], &p[1]);
+ /* Next descriptor */
+ rx_desc_index = (rx_desc_index + 1) % RX_DESC;
+ done = 0;
+ }
+ } while (len == 0); /* galileo bug.. len might be zero */
+
+ return ch;
}
int
@@ -266,8 +270,6 @@ mpsc_test_char(void)
int
mpsc_init(int baud)
{
- DECLARE_GLOBAL_DATA_PTR;
-
memset(MIRROR_HACK, 0, sizeof(struct _tag_mirror_hack));
MIRROR_HACK->GALMPSC_ROUTING_REGISTER_M=0x3fffffff;
@@ -382,7 +384,6 @@ mpsc_init2(void)
int
galbrg_set_baudrate(int channel, int rate)
{
- DECLARE_GLOBAL_DATA_PTR;
int clock;
galbrg_disable(channel);
@@ -410,7 +411,6 @@ galbrg_set_baudrate(int channel, int rate)
static int
galbrg_set_CDV(int channel, int value)
{
- DECLARE_GLOBAL_DATA_PTR;
unsigned int temp;
temp = GTREGREAD_MIRROR(GALBRG_0_CONFREG, channel, GALBRG_REG_GAP);
@@ -424,7 +424,6 @@ galbrg_set_CDV(int channel, int value)
static int
galbrg_enable(int channel)
{
- DECLARE_GLOBAL_DATA_PTR;
unsigned int temp;
temp = GTREGREAD_MIRROR(GALBRG_0_CONFREG, channel, GALBRG_REG_GAP);
@@ -437,7 +436,6 @@ galbrg_enable(int channel)
static int
galbrg_disable(int channel)
{
- DECLARE_GLOBAL_DATA_PTR;
unsigned int temp;
temp = GTREGREAD_MIRROR(GALBRG_0_CONFREG, channel, GALBRG_REG_GAP);
@@ -450,7 +448,6 @@ galbrg_disable(int channel)
static int
galbrg_set_clksrc(int channel, int value)
{
- DECLARE_GLOBAL_DATA_PTR;
unsigned int temp;
temp = GTREGREAD_MIRROR(GALBRG_0_CONFREG,channel, GALBRG_REG_GAP);
@@ -583,7 +580,6 @@ galsdma_set_burstsize(int channel, unsigned int value)
static int
galmpsc_connect(int channel, int connect)
{
- DECLARE_GLOBAL_DATA_PTR;
unsigned int temp;
temp = GTREGREAD_MIRROR_G(GALMPSC_ROUTING_REGISTER);
@@ -629,7 +625,6 @@ galmpsc_route_serial(int channel, int connect)
static int
galmpsc_route_rx_clock(int channel, int brg)
{
- DECLARE_GLOBAL_DATA_PTR;
unsigned int temp;
temp = GTREGREAD_MIRROR_G(GALMPSC_RxC_ROUTE);
@@ -647,7 +642,6 @@ galmpsc_route_rx_clock(int channel, int brg)
static int
galmpsc_route_tx_clock(int channel, int brg)
{
- DECLARE_GLOBAL_DATA_PTR;
unsigned int temp;
temp = GTREGREAD_MIRROR_G(GALMPSC_TxC_ROUTE);
@@ -688,7 +682,6 @@ galmpsc_write_config_regs(int mpsc, int mode)
static int
galmpsc_config_channel_regs(int mpsc)
{
- DECLARE_GLOBAL_DATA_PTR;
GT_REG_WRITE_MIRROR(GALMPSC_CHANNELREG_1,mpsc,GALMPSC_REG_GAP, 0);
GT_REG_WRITE_MIRROR(GALMPSC_CHANNELREG_2,mpsc,GALMPSC_REG_GAP, 0);
GT_REG_WRITE(GALMPSC_CHANNELREG_3+(mpsc*GALMPSC_REG_GAP), 1);
@@ -709,7 +702,6 @@ galmpsc_config_channel_regs(int mpsc)
static int
galmpsc_set_brkcnt(int mpsc, int value)
{
- DECLARE_GLOBAL_DATA_PTR;
unsigned int temp;
temp = GTREGREAD_MIRROR(GALMPSC_CHANNELREG_1,mpsc,GALMPSC_REG_GAP);
@@ -723,7 +715,6 @@ galmpsc_set_brkcnt(int mpsc, int value)
static int
galmpsc_set_tcschar(int mpsc, int value)
{
- DECLARE_GLOBAL_DATA_PTR;
unsigned int temp;
temp = GTREGREAD_MIRROR(GALMPSC_CHANNELREG_1,mpsc,GALMPSC_REG_GAP);
@@ -737,7 +728,6 @@ galmpsc_set_tcschar(int mpsc, int value)
static int
galmpsc_set_char_length(int mpsc, int value)
{
- DECLARE_GLOBAL_DATA_PTR;
unsigned int temp;
temp = GTREGREAD_MIRROR(GALMPSC_PROTOCONF_REG,mpsc,GALMPSC_REG_GAP);
@@ -751,7 +741,6 @@ galmpsc_set_char_length(int mpsc, int value)
static int
galmpsc_set_stop_bit_length(int mpsc, int value)
{
- DECLARE_GLOBAL_DATA_PTR;
unsigned int temp;
temp = GTREGREAD_MIRROR(GALMPSC_PROTOCONF_REG,mpsc,GALMPSC_REG_GAP);
@@ -764,7 +753,6 @@ galmpsc_set_stop_bit_length(int mpsc, int value)
static int
galmpsc_set_parity(int mpsc, int value)
{
- DECLARE_GLOBAL_DATA_PTR;
unsigned int temp;
temp = GTREGREAD_MIRROR(GALMPSC_CHANNELREG_2,mpsc,GALMPSC_REG_GAP);
@@ -784,7 +772,6 @@ galmpsc_set_parity(int mpsc, int value)
static int
galmpsc_enter_hunt(int mpsc)
{
- DECLARE_GLOBAL_DATA_PTR;
int temp;
temp = GTREGREAD_MIRROR(GALMPSC_CHANNELREG_2,mpsc,GALMPSC_REG_GAP);
@@ -802,7 +789,6 @@ galmpsc_enter_hunt(int mpsc)
static int
galmpsc_shutdown(int mpsc)
{
- DECLARE_GLOBAL_DATA_PTR;
#if 0
unsigned int temp;
generated by cgit v1.1 at 2024-11-16 14:43:28 +0000