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authorzwelch <zwelch@b42882b7-edfa-0310-969c-e2dbd0fdcd60>2009-05-27 12:06:51 +0000
committerzwelch <zwelch@b42882b7-edfa-0310-969c-e2dbd0fdcd60>2009-05-27 12:06:51 +0000
commitdf60933321985c91499aacb28d2a41fa9e38138f (patch)
tree82a4e5fe6c0f36f5701031ab99ed0d03b54834dc /src
parentff2737b429f563c57ab255fa2479725c9f057028 (diff)
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SimonQian <simonqian@SimonQian.com>:
This patch allows the vsllink to support very large scan sizes in DMA mode. git-svn-id: svn://svn.berlios.de/openocd/trunk@1926 b42882b7-edfa-0310-969c-e2dbd0fdcd60
Diffstat (limited to 'src')
-rw-r--r--src/jtag/vsllink.c44
1 files changed, 30 insertions, 14 deletions
diff --git a/src/jtag/vsllink.c b/src/jtag/vsllink.c
index 57f69bcd..658f8c62 100644
--- a/src/jtag/vsllink.c
+++ b/src/jtag/vsllink.c
@@ -710,10 +710,10 @@ static void vsllink_state_move_dma(void)
&VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())];
u8 tms_scan = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
- vsllink_tap_ensure_space(0, 8);
-
if (tap_get_state() == TAP_RESET)
{
+ vsllink_tap_ensure_space(0, 8);
+
for (i = 0; i < 8; i++)
{
vsllink_tap_append_step(1, 0);
@@ -1318,7 +1318,6 @@ static void vsllink_scan_dma(bool ir_scan, enum scan_type type, u8 *buffer, int
vsllink_end_state(saved_end_state);
/* Scan */
- vsllink_tap_ensure_space(1, (scan_size + 7) & ~0x00000007);
vsllink_tap_append_scan_dma(scan_size, buffer, command);
tap_set_state(ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE);
@@ -1581,20 +1580,37 @@ static void vsllink_tap_append_scan_normal(int length, u8 *buffer, scan_command_
}
static void vsllink_tap_append_scan_dma(int length, u8 *buffer, scan_command_t *command)
{
- pending_scan_result_t *pending_scan_result = &pending_scan_results_buffer[pending_scan_results_length];
- int i;
+ pending_scan_result_t *pending_scan_result;
+ int len_tmp, len_all, i;
- pending_scan_result->offset = tap_length;
- pending_scan_result->length = length;
- pending_scan_result->command = command;
- pending_scan_result->buffer = buffer;
-
- for (i = 0; i < length; i++)
+ len_all = 0;
+ while (len_all < length)
{
- vsllink_tap_append_step((i < length-1 ? 0 : 1), (buffer[i/8] >> (i%8)) & 1);
+ if ((length - len_all) > tap_buffer_size * 8)
+ {
+ len_tmp = tap_buffer_size * 8;
+ }
+ else
+ {
+ len_tmp = length - len_all;
+ }
+
+ vsllink_tap_ensure_space(1, (len_tmp + 7) & ~7);
+
+ pending_scan_result = &pending_scan_results_buffer[pending_scan_results_length];
+ pending_scan_result->offset = tap_length;
+ pending_scan_result->length = len_tmp;
+ pending_scan_result->command = command;
+ pending_scan_result->buffer = buffer + len_all / 8;
+
+ for (i = 0; i < len_tmp; i++)
+ {
+ vsllink_tap_append_step(((len_all+i) < length-1 ? 0 : 1), (buffer[(len_all+i)/8] >> ((len_all+i)%8)) & 1);
+ }
+
+ pending_scan_results_length++;
+ len_all += len_tmp;
}
-
- pending_scan_results_length++;
}
/* Pad and send a tap sequence to the device, and receive the answer.