From aeaf94f4e83826fe56f38fc670973a60a5010ef1 Mon Sep 17 00:00:00 2001
From: Paul Selkirk <paul@psgd.org>
Date: Wed, 8 Apr 2015 16:01:31 -0400
Subject: Unify and refactor eim and i2c software.

Unify memory maps.
Move tc_init, tc_next, tc_wait_* into tc_[eim|i2c].c.
Move eim_setup into tc_eim.c, move i2c_open into tc_i2c.c.
---
 eim/sw/tc_eim.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 59 insertions(+), 11 deletions(-)

(limited to 'eim/sw/tc_eim.c')

diff --git a/eim/sw/tc_eim.c b/eim/sw/tc_eim.c
index 0d8c83c..d44b685 100644
--- a/eim/sw/tc_eim.c
+++ b/eim/sw/tc_eim.c
@@ -44,10 +44,26 @@
 #include "tc_eim.h"
 
 extern int debug;
+static int inited = 0;
+
+/* ---------------- EIM low-level code ---------------- */
+static int init(void)
+{
+    if (inited)
+        return 0;
+
+    if (eim_setup() != 0) {
+        fprintf(stderr, "EIM setup failed\n");
+        return -1;
+    }
+
+    inited = 1;
+    return 0;
+}
 
 /* ---------------- test-case low-level code ---------------- */
 
-static void dump(char *label, const uint8_t *buf, int len)
+static void dump(char *label, const uint8_t *buf, size_t len)
 {
     if (debug) {
         int i;
@@ -58,8 +74,11 @@ static void dump(char *label, const uint8_t *buf, int len)
     }
 }
 
-int tc_write(off_t offset, const uint8_t *buf, int len)
+int tc_write(off_t offset, const uint8_t *buf, size_t len)
 {
+    if (init() != 0)
+        return -1;
+
     dump("write ", buf, len);
 
     for (; len > 0; offset += 4, buf += 4, len -= 4) {
@@ -71,11 +90,14 @@ int tc_write(off_t offset, const uint8_t *buf, int len)
     return 0;
 }
 
-int tc_read(off_t offset, uint8_t *buf, int len)
+int tc_read(off_t offset, uint8_t *buf, size_t len)
 {
     uint8_t *rbuf = buf;
     int rlen = len;
 
+    if (init() != 0)
+        return -1;
+
     for (; rlen > 0; offset += 4, rbuf += 4, rlen -= 4) {
         uint32_t val;
         eim_read_32(offset, &val);
@@ -87,7 +109,7 @@ int tc_read(off_t offset, uint8_t *buf, int len)
     return 0;
 }
 
-int tc_expected(off_t offset, const uint8_t *expected, int len)
+int tc_expected(off_t offset, const uint8_t *expected, size_t len)
 {
     uint8_t *buf;
     int i;
@@ -116,22 +138,48 @@ errout:
     return 1;
 }
 
+int tc_init(off_t offset)
+{
+    uint8_t buf[4] = { 0, 0, 0, CTRL_INIT_CMD };
+
+    return tc_write(offset, buf, 4);
+}
+
+int tc_next(off_t offset)
+{
+    uint8_t buf[4] = { 0, 0, 0, CTRL_NEXT_CMD };
+
+    return tc_write(offset, buf, 4);
+}
+
 int tc_wait(off_t offset, uint8_t status, int *count)
 {
     uint8_t buf[4];
     int i;
 
     for (i = 1; ; ++i) {
-	if (count && (*count > 0) && (i >= *count)) {
-	    fprintf(stderr, "tc_wait timed out\n");
-	    return 1;
-	}
+        if (count && (*count > 0) && (i >= *count)) {
+            fprintf(stderr, "tc_wait timed out\n");
+            return 1;
+        }
         if (tc_read(offset, buf, 4) != 0)
             return -1;
         if (buf[3] & status) {
-	    if (count)
-		*count = i;
+            if (count)
+                *count = i;
             return 0;
-	}
+        }
     }
 }
+
+int tc_wait_ready(off_t offset)
+{
+    int limit = 256;
+    return tc_wait(offset, STATUS_READY_BIT, &limit);
+}
+
+int tc_wait_valid(off_t offset)
+{
+    int limit = 256;
+    return tc_wait(offset, STATUS_VALID_BIT, &limit);
+}
-- 
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