rtems patches: added new UART and IRQ rearrangement, plus include fix

Some of the include paths don't work. Not sure whether my patch is a correct fix or merely an awkward way to work around a problem that's somewhere else.
2024-11-15 05:46:15 +02:00 · 2011-11-20 16:30:29 -03:00 · 2011-11-20 16:30:29 -03:00 · 58da15e017
commit 58da15e017
parent ed85930f36
3 changed files with 298 additions and 0 deletions
--- a/m1/patches/rtems/fix-sysconf-includes.patch
+++ b/m1/patches/rtems/fix-sysconf-includes.patch
@ -0,0 +1,39 @@
+Index: rtems/c/src/lib/libbsp/lm32/shared/milkymist_console/console.c
+===================================================================
+--- rtems.orig/c/src/lib/libbsp/lm32/shared/milkymist_console/console.c	2011-11-20 16:20:21.000000000 -0300
+++ rtems/c/src/lib/libbsp/lm32/shared/milkymist_console/console.c	2011-11-20 16:20:25.000000000 -0300
+@@ -19,7 +19,7 @@
+ #include <rtems/termiostypes.h>
+ #include <bsp/irq-generic.h>
+ 
+-#include "../include/system_conf.h"
+#include "../../milkymist/include/system_conf.h"
+ #include "uart.h"
+ 
+ BSP_output_char_function_type BSP_output_char = BSP_uart_polled_write;
+Index: rtems/c/src/lib/libbsp/lm32/shared/milkymist_console/uart.c
+===================================================================
+--- rtems.orig/c/src/lib/libbsp/lm32/shared/milkymist_console/uart.c	2011-11-20 16:20:38.000000000 -0300
+++ rtems/c/src/lib/libbsp/lm32/shared/milkymist_console/uart.c	2011-11-20 16:20:49.000000000 -0300
+@@ -14,7 +14,7 @@
+ 
+ #include <rtems.h>
+ #include <rtems/libio.h>
+-#include "../include/system_conf.h"
+#include "../../milkymist/include/system_conf.h"
+ #include "uart.h"
+ 
+ void BSP_uart_init(int baud)
+Index: rtems/c/src/lib/libbsp/lm32/shared/milkymist_midi/midi.c
+===================================================================
+--- rtems.orig/c/src/lib/libbsp/lm32/shared/milkymist_midi/midi.c	2011-11-20 16:21:11.000000000 -0300
+++ rtems/c/src/lib/libbsp/lm32/shared/milkymist_midi/midi.c	2011-11-20 16:22:01.000000000 -0300
+@@ -20,7 +20,7 @@
+ #include <bsp.h>
+ #include <bsp/irq-generic.h>
+ #include <rtems/libio.h>
+-#include "../include/system_conf.h"
+#include "../../milkymist/include/system_conf.h"
+ #include "milkymist_midi.h"
+ 
+ #define DEVICE_NAME "/dev/midi"
--- a/m1/patches/rtems/milkymist-new-uart.patch
+++ b/m1/patches/rtems/milkymist-new-uart.patch
@ -0,0 +1,257 @@
+Index: rtems/c/src/lib/libbsp/lm32/milkymist/include/system_conf.h
+===================================================================
+--- rtems.orig/c/src/lib/libbsp/lm32/milkymist/include/system_conf.h	2011-08-01 10:48:11.000000000 -0300
+++ rtems/c/src/lib/libbsp/lm32/milkymist/include/system_conf.h	2011-11-20 16:02:10.000000000 -0300
+@@ -26,6 +26,16 @@
+ /* UART */
+ #define MM_UART_RXTX            (0xe0000000)
+ #define MM_UART_DIV             (0xe0000004)
+#define MM_UART_STAT            (0xe0000008)
+#define MM_UART_CTRL            (0xe000000c)
+
+#define UART_STAT_THRE          (0x1)
+#define UART_STAT_RX_EVT        (0x2)
+#define UART_STAT_TX_EVT        (0x4)
+
+#define UART_CTRL_RX_INT        (0x1)
+#define UART_CTRL_TX_INT        (0x2)
+#define UART_CTRL_THRU          (0x4)
+ 
+ /* Timers */
+ #define MM_TIMER1_COMPARE       (0xe0001024)
+@@ -225,8 +235,17 @@
+ 
+ /* MIDI */
+ #define MM_MIDI_RXTX            (0xe000b000)
+-#define MM_MIDI_DIVISOR         (0xe000b004)
+-#define MM_MIDI_THRU            (0xe000b008)
+#define MM_MIDI_DIV             (0xe000b004)
+#define MM_MIDI_STAT            (0xe000b008)
+#define MM_MIDI_CTRL            (0xe000b00c)
+
+#define MIDI_STAT_THRE          (0x1)
+#define MIDI_STAT_RX_EVT        (0x2)
+#define MIDI_STAT_TX_EVT        (0x4)
+
+#define MIDI_CTRL_RX_INT        (0x1)
+#define MIDI_CTRL_TX_INT        (0x2)
+#define MIDI_CTRL_THRU          (0x4)
+ 
+ /* IR */
+ #define MM_IR_RX                (0xe000e000)
+@@ -248,24 +267,22 @@
+ #define BT656_FILTER_INFRAME    (0x4)
+ 
+ /* Interrupts */
+-#define MM_IRQ_UARTRX           (0)
+-#define MM_IRQ_UARTTX           (1)
+-#define MM_IRQ_GPIO             (2)
+-#define MM_IRQ_TIMER0           (3)
+-#define MM_IRQ_TIMER1           (4)
+-#define MM_IRQ_AC97CRREQUEST    (5)
+-#define MM_IRQ_AC97CRREPLY      (6)
+-#define MM_IRQ_AC97DMAR         (7)
+-#define MM_IRQ_AC97DMAW         (8)
+-#define MM_IRQ_PFPU             (9)
+-#define MM_IRQ_TMU              (10)
+-#define MM_IRQ_ETHRX            (11)
+-#define MM_IRQ_ETHTX            (12)
+-#define MM_IRQ_VIDEOIN          (13)
+-#define MM_IRQ_MIDIRX           (14)
+-#define MM_IRQ_MIDITX           (15)
+-#define MM_IRQ_IR               (16)
+-#define MM_IRQ_USB              (17)
+#define MM_IRQ_UART             (0)
+#define MM_IRQ_GPIO             (1)
+#define MM_IRQ_TIMER0           (2)
+#define MM_IRQ_TIMER1           (3)
+#define MM_IRQ_AC97CRREQUEST    (4)
+#define MM_IRQ_AC97CRREPLY      (5)
+#define MM_IRQ_AC97DMAR         (6)
+#define MM_IRQ_AC97DMAW         (7)
+#define MM_IRQ_PFPU             (8)
+#define MM_IRQ_TMU              (9)
+#define MM_IRQ_ETHRX            (10)
+#define MM_IRQ_ETHTX            (11)
+#define MM_IRQ_VIDEOIN          (12)
+#define MM_IRQ_MIDI             (13)
+#define MM_IRQ_IR               (14)
+#define MM_IRQ_USB              (15)
+ 
+ /* Flash layout */
+ #define FLASH_BASE                      (0x80000000)
+Index: rtems/c/src/lib/libbsp/lm32/shared/milkymist_console/console.c
+===================================================================
+--- rtems.orig/c/src/lib/libbsp/lm32/shared/milkymist_console/console.c	2011-08-01 10:48:39.000000000 -0300
+++ rtems/c/src/lib/libbsp/lm32/shared/milkymist_console/console.c	2011-11-20 16:02:10.000000000 -0300
+@@ -119,25 +119,24 @@
+   rtems_interrupt_level level;
+ 
+   rtems_interrupt_disable(level);
+-  BSP_uart_txbusy = true;
+   MM_WRITE(MM_UART_RXTX, *buf);
+   rtems_interrupt_enable(level);
+   return 0;
+ }
+ 
+-static rtems_isr mmconsole_txdone(rtems_vector_number n)
+-{
+-  BSP_uart_txbusy = false;
+-  lm32_interrupt_ack(1 << MM_IRQ_UARTTX);
+-  rtems_termios_dequeue_characters(tty, 1);
+-}
+-
+-static rtems_isr mmconsole_rxdone(rtems_vector_number n)
+static rtems_isr mmconsole_interrupt(rtems_vector_number n)
+ {
+   char c;
+-  c = MM_READ(MM_UART_RXTX);
+-  lm32_interrupt_ack(1 << MM_IRQ_UARTRX);
+-  rtems_termios_enqueue_raw_characters(tty, &c, 1);
+  while (MM_READ(MM_UART_STAT) & UART_STAT_RX_EVT) {
+    c = MM_READ(MM_UART_RXTX);
+    MM_WRITE(MM_UART_STAT, UART_STAT_RX_EVT);
+    rtems_termios_enqueue_raw_characters(tty, &c, 1);
+  }
+  if (MM_READ(MM_UART_STAT) & UART_STAT_TX_EVT) {
+    MM_WRITE(MM_UART_STAT, UART_STAT_TX_EVT);
+    rtems_termios_dequeue_characters(tty, 1);
+  }
+  lm32_interrupt_ack(1 << MM_IRQ_UART);
+ }
+ 
+ static const rtems_termios_callbacks mmconsole_callbacks = {
+@@ -166,10 +165,9 @@
+   if (status != RTEMS_SUCCESSFUL)
+     rtems_fatal_error_occurred(status);
+ 
+-  rtems_interrupt_catch(mmconsole_txdone, MM_IRQ_UARTTX, &dummy);
+-  rtems_interrupt_catch(mmconsole_rxdone, MM_IRQ_UARTRX, &dummy);
+-  bsp_interrupt_vector_enable(MM_IRQ_UARTTX);
+-  bsp_interrupt_vector_enable(MM_IRQ_UARTRX);
+  rtems_interrupt_catch(mmconsole_interrupt, MM_IRQ_UART, &dummy);
+  bsp_interrupt_vector_enable(MM_IRQ_UART);
+  MM_WRITE(MM_UART_CTRL, UART_CTRL_RX_INT|UART_CTRL_TX_INT);
+ 
+   return RTEMS_SUCCESSFUL;
+ }
+Index: rtems/c/src/lib/libbsp/lm32/shared/milkymist_console/uart.c
+===================================================================
+--- rtems.orig/c/src/lib/libbsp/lm32/shared/milkymist_console/uart.c	2011-08-01 10:48:39.000000000 -0300
+++ rtems/c/src/lib/libbsp/lm32/shared/milkymist_console/uart.c	2011-11-20 16:02:10.000000000 -0300
+@@ -17,8 +17,6 @@
+ #include "../include/system_conf.h"
+ #include "uart.h"
+ 
+-bool BSP_uart_txbusy;
+-
+ void BSP_uart_init(int baud)
+ {
+   MM_WRITE(MM_UART_DIV, CPU_FREQUENCY/baud/16);
+@@ -26,40 +24,24 @@
+ 
+ void BSP_uart_polled_write(char ch)
+ {
+-  int ip;
+   rtems_interrupt_level level;
+ 
+   rtems_interrupt_disable(level);
+-  if (BSP_uart_txbusy) {
+-    /* wait for the end of the transmission by the IRQ-based driver */
+-    do {
+-      lm32_read_interrupts(ip);
+-    } while (!(ip & (1 << MM_IRQ_UARTTX)));
+-    lm32_interrupt_ack(1 << MM_IRQ_UARTTX);
+-  }
+  while(!(MM_READ(MM_UART_STAT) & UART_STAT_THRE));
+   MM_WRITE(MM_UART_RXTX, ch);
+-  do {
+-    lm32_read_interrupts(ip);
+-  } while (!(ip & (1 << MM_IRQ_UARTTX)));
+-  /* if TX was busy, do not ack the IRQ
+-   * so that the IRQ-based driver ISR is run */
+-  if (!BSP_uart_txbusy)
+-    lm32_interrupt_ack(1 << MM_IRQ_UARTTX);
+  while(!(MM_READ(MM_UART_STAT) & UART_STAT_THRE));
+   rtems_interrupt_enable(level);
+ }
+ 
+ int BSP_uart_polled_read(void)
+ {
+-  int ip;
+   char r;
+   rtems_interrupt_level level;
+ 
+   rtems_interrupt_disable(level);
+-  do {
+-    lm32_read_interrupts(ip);
+-  } while (!(ip & (1 << MM_IRQ_UARTRX)));
+-  lm32_interrupt_ack(1 << MM_IRQ_UARTRX);
+  while(!(MM_READ(MM_UART_STAT) & UART_STAT_RX_EVT));
+   r = MM_READ(MM_UART_RXTX);
+  MM_WRITE(MM_UART_STAT, UART_STAT_RX_EVT);
+   rtems_interrupt_enable(level);
+ 
+   return r;
+Index: rtems/c/src/lib/libbsp/lm32/shared/milkymist_console/uart.h
+===================================================================
+--- rtems.orig/c/src/lib/libbsp/lm32/shared/milkymist_console/uart.h	2011-08-01 10:48:39.000000000 -0300
+++ rtems/c/src/lib/libbsp/lm32/shared/milkymist_console/uart.h	2011-11-20 16:02:10.000000000 -0300
+@@ -1,21 +1,16 @@
+ /*
+- *  This file contains definitions for LatticeMico32 UART
+ *  This file contains definitions for the Milkymist UART
+  *
+  *  The license and distribution terms for this file may be
+  *  found in the file LICENSE in this distribution or at
+  *  http://www.rtems.com/license/LICENSE.
+  *
+  *  $Id: uart.h,v 1.2 2011/08/01 13:48:39 joel Exp $
+- *
+- *  COPYRIGHT (c) Yann Sionneau <yann.sionneau@telecom-sudparis.eu> (GSoC 2010)
+- *  Telecom SudParis
+  */
+ 
+ #ifndef _BSPUART_H
+ #define _BSPUART_H
+ 
+-extern bool BSP_uart_txbusy;
+-
+ void BSP_uart_init(int baud);
+ void BSP_uart_polled_write(char ch);
+ int BSP_uart_polled_read(void);
+Index: rtems/c/src/lib/libbsp/lm32/shared/milkymist_midi/midi.c
+===================================================================
+--- rtems.orig/c/src/lib/libbsp/lm32/shared/milkymist_midi/midi.c	2011-08-01 10:48:40.000000000 -0300
+++ rtems/c/src/lib/libbsp/lm32/shared/milkymist_midi/midi.c	2011-11-20 16:02:10.000000000 -0300
+@@ -31,9 +31,12 @@
+ {
+   unsigned char msg;
+ 
+-  lm32_interrupt_ack(1 << MM_IRQ_MIDIRX);
+-  msg = MM_READ(MM_MIDI_RXTX);
+-  rtems_message_queue_send(midi_q, &msg, 1);
+  while (MM_READ(MM_MIDI_STAT) & MIDI_STAT_RX_EVT) {
+    msg = MM_READ(MM_MIDI_RXTX);
+    MM_WRITE(MM_MIDI_STAT, MIDI_STAT_RX_EVT);
+    rtems_message_queue_send(midi_q, &msg, 1);
+  }
+  lm32_interrupt_ack(1 << MM_IRQ_MIDI);
+ }
+ 
+ rtems_device_driver midi_initialize(
+@@ -57,11 +60,10 @@
+   );
+   RTEMS_CHECK_SC(sc, "create MIDI queue");
+ 
+-  rtems_interrupt_catch(interrupt_handler, MM_IRQ_MIDIRX, &dummy);
+-  bsp_interrupt_vector_enable(MM_IRQ_MIDIRX);
+-
+  rtems_interrupt_catch(interrupt_handler, MM_IRQ_MIDI, &dummy);
+  bsp_interrupt_vector_enable(MM_IRQ_MIDI);
+   /* Only MIDI THRU mode is supported atm */
+-  MM_WRITE(MM_MIDI_THRU, 1);
+  MM_WRITE(MM_MIDI_CTRL, MIDI_CTRL_RX_INT|MIDI_CTRL_THRU);
+ 
+   return RTEMS_SUCCESSFUL;
+ }
--- a/m1/patches/rtems/series
+++ b/m1/patches/rtems/series
@ -2,3 +2,5 @@ lm32-stack-alignment.patch
 rbtree-container-of.patch
 chain-first-last.patch
 coremsgsubmit-race.patch
+milkymist-new-uart.patch
+fix-sysconf-includes.patch