Changeset 07039850 in mainline for uspace/lib/ata/src/ata.c

Timestamp:

2025-03-05T21:41:03Z (16 hours ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

master

Parents:

a64970e1

Message:

Implement quiesce in ISA and PCI IDE and in PC Floppy.

File:

• uspace/lib/ata/src/ata.c (modified) (3 diffs)

uspace/lib/ata/src/ata.c

@@ -84 +84 @@
 static uint8_t ata_read_cmd_8(ata_channel_t *, uint16_t);
 static void ata_write_cmd_8(ata_channel_t *, uint16_t, uint8_t);
+static void ata_write_ctl_8(ata_channel_t *, uint16_t, uint8_t);
 
 static errno_t ata_bd_init_irq(ata_channel_t *);
@@ -279 +280 @@
 }
 
+/** Quiesce ATA channel. */
+void ata_channel_quiesce(ata_channel_t *chan)
+{
+        ata_msg_debug(chan, ": ata_channel_quiesce()");
+
+        fibril_mutex_lock(&chan->lock);
+        ata_write_ctl_8(chan, REG_DEVCTL, DCR_SRST | DCR_nIEN);
+        fibril_mutex_unlock(&chan->lock);
+}
+
 /** Add ATA device.
  *
@@ -348 +359 @@
 {
         return chan->params.write_cmd_8(chan->params.arg, port, value);
+}
+
+/** Write 8 bits to 8-bit control port.
+ *
+ * @param chan ATA channel
+ * @param port Port number
+ * @param value Register value
+ */
+static void ata_write_ctl_8(ata_channel_t *chan, uint16_t port, uint8_t value)
+{
+        return chan->params.write_ctl_8(chan->params.arg, port, value);
 }