Changeset 4802dd7 in mainline for uspace/srv/bd/sata_bd/sata_bd.c

Timestamp:

2012-08-13T22:01:04Z (12 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

135486d, 71b0d4d4, 9dec6d4, cddcc4a3

Parents:

4820360

Message:

Factor out client and server IPC stubs for block devices.

File:

• uspace/srv/bd/sata_bd/sata_bd.c (modified) (5 diffs)

uspace/srv/bd/sata_bd/sata_bd.c

@@ -38 +38 @@
 
 #include <sys/types.h>
+#include <bd_srv.h>
 #include <errno.h>
 #include <stdio.h>
-#include <ipc/bd.h>
 #include <str.h>
 #include <loc.h>
@@ -56 +56 @@
 static sata_bd_dev_t disk[MAXDISKS];
 static int disk_count;
+
+static int sata_bd_open(bd_srv_t *);
+static int sata_bd_close(bd_srv_t *);
+static int sata_bd_read_blocks(bd_srv_t *, aoff64_t, size_t, void *, size_t);
+static int sata_bd_write_blocks(bd_srv_t *, aoff64_t, size_t, const void *, size_t);
+static int sata_bd_get_block_size(bd_srv_t *, size_t *);
+static int sata_bd_get_num_blocks(bd_srv_t *, aoff64_t *);
+
+static bd_ops_t sata_bd_ops = {
+        .open = sata_bd_open,
+        .close = sata_bd_close,
+        .read_blocks = sata_bd_read_blocks,
+        .write_blocks = sata_bd_write_blocks,
+        .get_block_size = sata_bd_get_block_size,
+        .get_num_blocks = sata_bd_get_num_blocks
+};
+
+static sata_bd_dev_t *bd_srv_sata(bd_srv_t *bd)
+{
+        return (sata_bd_dev_t *)bd->arg;
+}
 
 /** Find SATA devices in device tree.
@@ -82 +103 @@
                 
                 ahci_get_num_blocks(disk[disk_count].sess, &disk[disk_count].blocks);
-                                
+                
+                bd_srv_init(&disk[disk_count].bd);
+                disk[disk_count].bd.ops = &sata_bd_ops;
+                disk[disk_count].bd.arg = &disk[disk_count];
+                
                 printf("Device %s - %s , blocks: %lu, block_size: %lu\n", 
                     disk[disk_count].dev_name, disk[disk_count].sata_dev_name,
@@ -141 +166 @@
 static void sata_bd_connection(ipc_callid_t iid, ipc_call_t *icall, void *arg)
 {
-        void *fs_va = NULL;
-        ipc_callid_t callid;
-        ipc_call_t call;
-        sysarg_t method;
         service_id_t dsid;
-        /* Size of the communication area. */
-        size_t comm_size;       
-        unsigned int flags;
-        int retval = 0;
-        uint64_t ba;
-        size_t cnt;
         int disk_id, i;
 
@@ -168 +183 @@
         }
 
-        /* Answer the IPC_M_CONNECT_ME_TO call. */
-        async_answer_0(iid, EOK);
-
-        if (!async_share_out_receive(&callid, &comm_size, &flags)) {
-                async_answer_0(callid, EHANGUP);
-                return;
-        }
-
-        (void) async_share_out_finalize(callid, &fs_va);
-        if (fs_va == (void *) -1) {
-                async_answer_0(callid, EHANGUP);
-                return;
-        }
-
-        while (true) {
-                callid = async_get_call(&call);
-                method = IPC_GET_IMETHOD(call);
-                
-                if (!method) {
-                        /* The other side has hung up. */
-                        async_answer_0(callid, EOK);
-                        return;
-                }
-                
-                switch (method) {
-                        case BD_READ_BLOCKS:
-                                ba = MERGE_LOUP32(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
-                                cnt = IPC_GET_ARG3(call);
-                                if (cnt * disk[disk_id].block_size > comm_size) {
-                                        retval = ELIMIT;
-                                        break;
-                                }
-                                retval = ahci_read_blocks(disk[disk_id].sess, ba, cnt, fs_va);
-                                break;
-                        case BD_WRITE_BLOCKS:
-                                ba = MERGE_LOUP32(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
-                                cnt = IPC_GET_ARG3(call);
-                                if (cnt * disk[disk_id].block_size > comm_size) {
-                                        retval = ELIMIT;
-                                        break;
-                                }
-                                retval = ahci_write_blocks(disk[disk_id].sess, ba, cnt, fs_va);
-                                break;
-                        case BD_GET_BLOCK_SIZE:
-                                async_answer_1(callid, EOK, disk[disk_id].block_size);
-                                continue;
-                        case BD_GET_NUM_BLOCKS:
-                                async_answer_2(callid, EOK, LOWER32(disk[disk_id].blocks),
-                                    UPPER32(disk[disk_id].blocks));
-                                break;
-                        default:
-                                retval = EINVAL;
-                                break;
-                        }
-                async_answer_0(callid, retval);
-        }
-}
+        bd_conn(iid, icall, &disk[disk_id].bd);
+}
+
+/** Open device. */
+static int sata_bd_open(bd_srv_t *bd)
+{
+        return EOK;
+}
+
+/** Close device. */
+static int sata_bd_close(bd_srv_t *bd)
+{
+        return EOK;
+}
+
+/** Read blocks from partition. */
+static int sata_bd_read_blocks(bd_srv_t *bd, aoff64_t ba, size_t cnt, void *buf,
+    size_t size)
+{
+        sata_bd_dev_t *sbd = bd_srv_sata(bd);
+
+        if (size < cnt * sbd->block_size)
+                return EINVAL;
+
+        return ahci_read_blocks(sbd->sess, ba, cnt, buf);
+}
+
+/** Write blocks to partition. */
+static int sata_bd_write_blocks(bd_srv_t *bd, aoff64_t ba, size_t cnt,
+    const void *buf, size_t size)
+{
+        sata_bd_dev_t *sbd = bd_srv_sata(bd);
+
+        if (size < cnt * sbd->block_size)
+                return EINVAL;
+
+        return ahci_write_blocks(sbd->sess, ba, cnt, (void *)buf);
+}
+
+/** Get device block size. */
+static int sata_bd_get_block_size(bd_srv_t *bd, size_t *rsize)
+{
+        sata_bd_dev_t *sbd = bd_srv_sata(bd);
+
+        *rsize = sbd->block_size;
+        return EOK;
+}
+
+/** Get number of blocks on device. */
+static int sata_bd_get_num_blocks(bd_srv_t *bd, aoff64_t *rnb)
+{
+        sata_bd_dev_t *sbd = bd_srv_sata(bd);
+
+        *rnb = sbd->blocks;
+        return EOK;
+}
+
 
 int main(int argc, char **argv)