Changeset 413225d in mainline

Timestamp:

2011-11-30T21:25:05Z (13 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

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

Children:

ed3f8d5

Parents:

427069d

Message:

sb16: Ack interrupts in irq pseudocode.

Location:

uspace/drv/audio/sb16

Files:

• dsp.c (modified) (1 diff)
• main.c (modified) (1 diff)
• sb16.c (modified) (2 diffs)
• sb16.h (modified) (1 diff)

uspace/drv/audio/sb16/dsp.c

@@ -194 +194 @@
 {
         assert(dsp);
-        /* We don't really care about the mode of transport, so ack both */
-        // TODO: Move irq ACK to irq_code
-        if (dsp->version.major >= 4) {
-                /* ACK dma16 transfer interrupt */
-                pio_read_8(&dsp->regs->dma16_ack);
-        }
-        /* ACK dma8 transfer interrupt */
-        pio_read_8(&dsp->regs->dsp_read_status);
-
-        const size_t remain_size = dsp->playing.size -
-            (dsp->playing.position - dsp->playing.data);
+        const size_t remain_size =
+            dsp->playing.size - (dsp->playing.position - dsp->playing.data);
 
         if (remain_size == 0) {

uspace/drv/audio/sb16/main.c

@@ -114 +114 @@
             "Failed to get resources: %s.\n", str_error(ret));
 
-        irq_code_t *irq_code = sb16_irq_code();
-        ret = register_interrupt_handler(device, irq, irq_handler, irq_code);
+        const size_t irq_cmd_count = sb16_irq_code_size();
+        irq_cmd_t irq_cmds[irq_cmd_count];
+        sb16_irq_code((void*)sb_regs, dma8, dma16, irq_cmds);
+        irq_code_t irq_code = { .cmdcount = irq_cmd_count, .cmds = irq_cmds };
+
+        ret = register_interrupt_handler(device, irq, irq_handler, &irq_code);
         CHECK_RET_RETURN(ret,
             "Failed to register irq handler: %s.\n", str_error(ret));

uspace/drv/audio/sb16/sb16.c

@@ -44 +44 @@
 
 /* ISA interrupts should be edge-triggered so there should be no need for
- * irq code magic */
-static const irq_cmd_t irq_cmds[] = {{ .cmd = CMD_ACCEPT }};
-static const irq_code_t irq_code =
-    { .cmdcount = 1, .cmds = (irq_cmd_t*)irq_cmds }; // FIXME: Remove cast
+ * irq code magic, but we still need to ack those interrupts ASAP. */
+static const irq_cmd_t irq_cmds[] = {
+        { .cmd = CMD_PIO_READ_8, .dstarg = 1 }, /* Address patched at runtime */
+        { .cmd = CMD_PIO_READ_8, .dstarg = 1 }, /* Address patched at runtime */
+        { .cmd = CMD_ACCEPT },
+};
 
 static inline sb_mixer_type_t sb_mixer_type_by_dsp_version(
@@ -62 +64 @@
 }
 /*----------------------------------------------------------------------------*/
-irq_code_t * sb16_irq_code(void)
+size_t sb16_irq_code_size(void)
 {
-        // FIXME: Remove this cast
-        return (irq_code_t*)&irq_code;
+        return sizeof(irq_cmds) / sizeof(irq_cmds[0]);
+}
+/*----------------------------------------------------------------------------*/
+void sb16_irq_code(void *regs, int dma8, int dma16, irq_cmd_t cmds[])
+{
+        assert(regs);
+        assert(dma8 > 0 && dma8 < 4);
+        sb16_regs_t *registers = regs;
+        memcpy(cmds, irq_cmds, sizeof(irq_cmds));
+        cmds[0].addr = (void*)&registers->dsp_read_status;
+        if (dma16 > 4 && dma16 < 8) {
+                /* Valid dma16 */
+                cmds[1].addr = (void*)&registers->dma16_ack;
+        } else {
+                cmds[1].cmd = CMD_ACCEPT;
+        }
 }
 /*----------------------------------------------------------------------------*/

uspace/drv/audio/sb16/sb16.h

@@ -50 +50 @@
 } sb16_t;
 
-irq_code_t * sb16_irq_code(void);
+size_t sb16_irq_code_size(void);
+void sb16_irq_code(void *regs, int dma8, int dma16, irq_cmd_t cmds[]);
 int sb16_init_sb16(sb16_t *sb, void *regs, size_t size,
     ddf_dev_t *dev, int dma8, int dma16);