s3c24x0: move serial driver to drivers/serial

[oweals/u-boot.git] / api_examples / glue.c

diff --git a/api_examples/glue.c b/api_examples/glue.c
index 75983691fde4332d748f45c375472114a1577657..eff6a7e62f515806036efb3f6f9b7ea5a73b5054 100644 (file)
--- a/api_examples/glue.c
+++ b/api_examples/glue.c
@@ -1,7 +1,5 @@
 /*
- * (C) Copyright 2007 Semihalf
- *
- * Written by: Rafal Jaworowski <raj@semihalf.com>
+ * (C) Copyright 2007-2008 Semihalf, Rafal Jaworowski <raj@semihalf.com>
  *
  * See file CREDITS for list of people who contributed to this
  * project.
@@ -57,16 +55,23 @@ static int valid_sig(struct api_signature *sig)
  *
  * returns 1/0 depending on found/not found result
  */
-int api_search_sig(struct api_signature **sig) {
-
+int api_search_sig(struct api_signature **sig)
+{
        unsigned char *sp;
+       uint32_t search_start = 0;
+       uint32_t search_end = 0;
 
        if (sig == NULL)
                return 0;
 
-       sp = (unsigned char *)API_SEARCH_START;
+       if (search_hint == 0)
+               search_hint = 255 * 1024 * 1024;
+
+       search_start = search_hint & ~0x000fffff;
+       search_end = search_start + API_SEARCH_LEN - API_SIG_MAGLEN;
 
-       while ((sp + (int)API_SIG_MAGLEN) < (unsigned char *)API_SEARCH_END) {
+       sp = (unsigned char *)search_start;
+       while ((sp + API_SIG_MAGLEN) < (unsigned char *)search_end) {
                if (!memcmp(sp, API_SIG_MAGIC, API_SIG_MAGLEN)) {
                        *sig = (struct api_signature *)sp;
                        if (valid_sig(*sig))
@@ -126,8 +131,7 @@ void ub_reset(void)
        syscall(API_RESET, NULL);
 }
 
-#define MR_MAX 5
-static struct mem_region mr[MR_MAX];
+static struct mem_region mr[UB_MAX_MR];
 static struct sys_info si;
 
 struct sys_info * ub_get_sys_info(void)
@@ -136,7 +140,7 @@ struct sys_info * ub_get_sys_info(void)
 
        memset(&si, 0, sizeof(struct sys_info));
        si.mr = mr;
-       si.mr_no = MR_MAX;
+       si.mr_no = UB_MAX_MR;
        memset(&mr, 0, sizeof(mr));
 
        if (!syscall(API_GET_SYS_INFO, &err, (u_int32_t)&si))
@@ -150,7 +154,7 @@ struct sys_info * ub_get_sys_info(void)
  * timing
  *
  ****************************************/
- 
+
 void ub_udelay(unsigned long usec)
 {
        syscall(API_UDELAY, NULL, &usec);
@@ -171,17 +175,15 @@ unsigned long ub_get_timer(unsigned long base)
  *
  * devices
  *
- * Devices are identified by handles: numbers 0, 1, 2, ..., MAX_DEVS-1
+ * Devices are identified by handles: numbers 0, 1, 2, ..., UB_MAX_DEV-1
  *
  ***************************************************************************/
 
-#define MAX_DEVS 6
-
-static struct device_info devices[MAX_DEVS];
+static struct device_info devices[UB_MAX_DEV];
 
 struct device_info * ub_dev_get(int i)
 {
-       return ((i < 0 || i >= MAX_DEVS) ? NULL : &devices[i]);
+       return ((i < 0 || i >= UB_MAX_DEV) ? NULL : &devices[i]);
 }
 
 /*
@@ -195,7 +197,7 @@ int ub_dev_enum(void)
        struct device_info *di;
        int n = 0;
 
-       memset(&devices, 0, sizeof(struct device_info) * MAX_DEVS);
+       memset(&devices, 0, sizeof(struct device_info) * UB_MAX_DEV);
        di = &devices[0];
 
        if (!syscall(API_DEV_ENUM, NULL, di))
@@ -203,7 +205,7 @@ int ub_dev_enum(void)
 
        while (di->cookie != NULL) {
 
-               if (++n >= MAX_DEVS)
+               if (++n >= UB_MAX_DEV)
                        break;
 
                /* take another device_info */
@@ -229,7 +231,7 @@ int ub_dev_open(int handle)
        struct device_info *di;
        int err = 0;
 
-       if (handle < 0 || handle >= MAX_DEVS)
+       if (handle < 0 || handle >= UB_MAX_DEV)
                return API_EINVAL;
 
        di = &devices[handle];
@@ -244,7 +246,7 @@ int ub_dev_close(int handle)
 {
        struct device_info *di;
 
-       if (handle < 0 || handle >= MAX_DEVS)
+       if (handle < 0 || handle >= UB_MAX_DEV)
                return API_EINVAL;
 
        di = &devices[handle];
@@ -265,7 +267,7 @@ int ub_dev_close(int handle)
  */
 static int dev_valid(int handle)
 {
-       if (handle < 0 || handle >= MAX_DEVS)
+       if (handle < 0 || handle >= UB_MAX_DEV)
                return 0;
 
        if (devices[handle].state != DEV_STA_OPEN)
@@ -285,7 +287,8 @@ static int dev_stor_valid(int handle)
        return 1;
 }
 
-int ub_dev_read(int handle, void *buf, lbasize_t len, lbastart_t start)
+int ub_dev_read(int handle, void *buf, lbasize_t len, lbastart_t start,
+               lbasize_t *rlen)
 {
        struct device_info *di;
        lbasize_t act_len;
@@ -296,15 +299,12 @@ int ub_dev_read(int handle, void *buf, lbasize_t len, lbastart_t start)
 
        di = &devices[handle];
        if (!syscall(API_DEV_READ, &err, di, buf, &len, &start, &act_len))
-               return -1;
+               return API_ESYSC;
 
-       if (err) 
-               return err;
+       if (!err && rlen)
+               *rlen = act_len;
 
-       if (act_len != len)
-               return API_EIO;
-
-       return 0;
+       return err;
 }
 
 static int dev_net_valid(int handle)
@@ -318,7 +318,7 @@ static int dev_net_valid(int handle)
        return 1;
 }
 
-int ub_dev_recv(int handle, void *buf, int len)
+int ub_dev_recv(int handle, void *buf, int len, int *rlen)
 {
        struct device_info *di;
        int err = 0, act_len;
@@ -328,12 +328,12 @@ int ub_dev_recv(int handle, void *buf, int len)
 
        di = &devices[handle];
        if (!syscall(API_DEV_READ, &err, di, buf, &len, &act_len))
-               return -1;
+               return API_ESYSC;
 
-       if (err)
-               return -1;
+       if (!err && rlen)
+               *rlen = act_len;
 
-       return act_len;
+        return (err);
 }
 
 int ub_dev_send(int handle, void *buf, int len)
@@ -346,7 +346,7 @@ int ub_dev_send(int handle, void *buf, int len)
 
        di = &devices[handle];
        if (!syscall(API_DEV_WRITE, &err, di, buf, &len))
-               return -1;
+               return API_ESYSC;
 
        return err;
 }
@@ -372,7 +372,6 @@ void ub_env_set(const char *name, char *value)
        syscall(API_ENV_SET, NULL, (uint32_t)name, (uint32_t)value);
 }
 
-
 static char env_name[256];
 
 const char * ub_env_enum(const char *last)