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authorFrank Gevaerts <frank@gevaerts.be>2008-03-02 18:16:24 +0000
committerFrank Gevaerts <frank@gevaerts.be>2008-03-02 18:16:24 +0000
commit411b92948a7bb8f28afae546ffe5ad4ae61c4cf1 (patch)
treea0cc37b1988c5dc0f8db81c11d8d4edd4d542106 /firmware/ifp_usb_serial.c
parente57806acaa1afde1b04fc4b7f128fe34b818fba6 (diff)
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move the ifp7xx usb serial driver files to more specific names, to make the "usb_serial" name available for more general usb class driver use
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16484 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/ifp_usb_serial.c')
-rw-r--r--firmware/ifp_usb_serial.c1126
1 files changed, 1126 insertions, 0 deletions
diff --git a/firmware/ifp_usb_serial.c b/firmware/ifp_usb_serial.c
new file mode 100644
index 0000000000..635123baa9
--- /dev/null
+++ b/firmware/ifp_usb_serial.c
@@ -0,0 +1,1126 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2006 by Tomasz Malesinski
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+/*
+#define LCD_DEBUG
+#define BUTTONS
+*/
+
+/* #include "config.h" */
+#include <stdlib.h>
+#include "pnx0101.h"
+#include "ifp_usb_serial.h"
+
+#ifdef BUTTONS
+#include "kernel.h"
+#include "button.h"
+#include "system.h"
+#endif
+
+#ifdef LCD_DEBUG
+#include "lcd.h"
+#include "sprintf.h"
+#endif
+
+
+#define ISP1582_BASE (0x24100000)
+#define ISP1582_ADDRESS (*(volatile unsigned char *)ISP1582_BASE)
+#define ISP1582_MODE (*(volatile unsigned short *)(ISP1582_BASE + 0xc))
+#define ISP1582_INTCONF (*(volatile unsigned char *)(ISP1582_BASE + 0x10))
+#define ISP1582_OTG (*(volatile unsigned char *)(ISP1582_BASE + 0x12))
+#define ISP1582_INTEN (*(volatile unsigned long *)(ISP1582_BASE + 0x14))
+
+#define ISP1582_EPINDEX (*(volatile unsigned char *)(ISP1582_BASE + 0x2c))
+#define ISP1582_CTRLFUN (*(volatile unsigned char *)(ISP1582_BASE + 0x28))
+#define ISP1582_DATA (*(volatile unsigned short *)(ISP1582_BASE + 0x20))
+#define ISP1582_BUFLEN (*(volatile unsigned short *)(ISP1582_BASE + 0x1c))
+#define ISP1582_BUFSTAT (*(volatile unsigned char *)(ISP1582_BASE + 0x1e))
+#define ISP1582_MAXPKSZ (*(volatile unsigned short *)(ISP1582_BASE + 0x04))
+#define ISP1582_EPTYPE (*(volatile unsigned short *)(ISP1582_BASE + 0x08))
+
+#define ISP1582_INT (*(volatile unsigned long *)(ISP1582_BASE + 0x18))
+#define ISP1582_CHIPID (*(volatile unsigned long *)(ISP1582_BASE + 0x70))
+#define ISP1582_FRAMENO (*(volatile unsigned short *)(ISP1582_BASE + 0x74))
+#define ISP1582_UNLOCK (*(volatile unsigned short *)(ISP1582_BASE + 0x7c))
+
+#define ISP1582_UNLOCK_CODE 0xaa37
+
+#define DIR_RX 0
+#define DIR_TX 1
+
+#define TYPE_BULK 2
+
+#define STATE_DEFAULT 0
+#define STATE_ADDRESS 1
+#define STATE_CONFIGURED 2
+
+#define N_ENDPOINTS 2
+
+struct usb_endpoint
+{
+ unsigned char *out_buf;
+ short out_len;
+ short out_ptr;
+ void (*out_done)(int, unsigned char *, int);
+ unsigned char out_in_progress;
+
+ unsigned char *in_buf;
+ short in_min_len;
+ short in_max_len;
+ short in_ptr;
+ void (*in_done)(int, unsigned char *, int);
+ unsigned char in_ack;
+
+ unsigned char halt[2];
+ unsigned char enabled[2];
+ short max_pkt_size[2];
+};
+
+static char usb_connect_state;
+
+static struct usb_endpoint endpoints[N_ENDPOINTS];
+
+static unsigned char setup_pkt_buf[8];
+static unsigned char setup_out_buf[8];
+static unsigned char usb_state;
+static unsigned char usb_remote_wakeup;
+
+#ifdef LCD_DEBUG
+static unsigned char int_count[32];
+
+static int log_pos_x = 0;
+static int log_pos_y = 3;
+#endif
+
+static void nop_f(void)
+{
+}
+
+#ifdef LCD_DEBUG
+static void log_char(char c)
+{
+ char s[2];
+
+ s[0] = c;
+ s[1] = 0;
+
+ lcd_puts(log_pos_x, log_pos_y, s);
+ lcd_update();
+ log_pos_x++;
+ if (log_pos_x >= 16)
+ {
+ log_pos_x = 0;
+ log_pos_y++;
+ if (log_pos_y > 5)
+ log_pos_y = 3;
+ }
+}
+#else
+#define log_char(c)
+#endif
+
+#define SERIAL_BUF_SIZE 1024
+
+struct serial_fifo
+{
+ unsigned char buf[SERIAL_BUF_SIZE];
+ short head, tail;
+};
+
+static struct serial_fifo serial_in_fifo;
+static struct serial_fifo serial_out_fifo;
+static unsigned char serial_in_pkt[64];
+
+static unsigned char device_descriptor[18] = {
+ 0x12, /* length */
+ 0x01, /* descriptor type */
+ 0x10, 0x01, /* USB version (1.1) */
+ 0xff, 0xff, /* class and subclass */
+ 0xff, /* protocol */
+ 0x40, /* max packet size 0 */
+ 0x02, 0x41, /* vendor (iRiver) */
+ 0x07, 0xee, /* product (0xee07) */
+ 0x01, 0x00, /* device version */
+ 0x01, /* manufacturer string */
+ 0x02, /* product string */
+ 0x00, /* serial number string */
+ 0x01 /* number of configurations */
+};
+
+static unsigned char cfg_descriptor[32] = {
+ 0x09, /* length */
+ 0x02, /* descriptor type */
+ 0x20, 0x00, /* total length */
+ 0x01, /* number of interfaces */
+ 0x01, /* configuration value */
+ 0x00, /* configuration string */
+ 0x80, /* attributes (none) */
+ 0x32, /* max power (100 mA) */
+ /* interface descriptor */
+ 0x09, /* length */
+ 0x04, /* descriptor type */
+ 0x00, /* interface number */
+ 0x00, /* alternate setting */
+ 0x02, /* number of endpoints */
+ 0xff, /* interface class */
+ 0xff, /* interface subclass */
+ 0xff, /* interface protocol */
+ 0x00, /* interface string */
+ /* endpoint IN */
+ 0x07, /* length */
+ 0x05, /* descriptor type */
+ 0x81, /* endpoint 1 IN */
+ 0x02, /* attributes (bulk) */
+ 0x40, 0x00, /* max packet size */
+ 0x00, /* interval */
+ /* endpoint OUT */
+ 0x07, /* length */
+ 0x05, /* descriptor type */
+ 0x01, /* endpoint 1 IN */
+ 0x02, /* attributes (bulk) */
+ 0x40, 0x00, /* max packet size */
+ 0x00 /* interval */
+};
+
+static unsigned char lang_descriptor[4] = {
+ 0x04, /* length */
+ 0x03, /* descriptor type */
+ 0x09, 0x04 /* English (US) */
+};
+
+#define N_STRING_DESCRIPTORS 2
+
+static unsigned char string_descriptor_vendor[] = {
+ 0x2e, 0x03,
+ 'i', 0, 'R', 0, 'i', 0, 'v', 0, 'e', 0, 'r', 0, ' ', 0, 'L', 0,
+ 't', 0, 'd', 0, ' ', 0, 'a', 0, 'n', 0, 'd', 0, ' ', 0, 'R', 0,
+ 'o', 0, 'c', 0, 'k', 0, 'b', 0, 'o', 0, 'x', 0};
+
+static unsigned char string_descriptor_product[] = {
+ 0x1c, 0x03,
+ 'i', 0, 'R', 0, 'i', 0, 'v', 0, 'e', 0, 'r', 0, ' ', 0, 'i', 0,
+ 'F', 0, 'P', 0, '7', 0, '0', 0, '0', 0};
+
+static unsigned char *string_descriptor[N_STRING_DESCRIPTORS] = {
+ string_descriptor_vendor,
+ string_descriptor_product
+};
+
+static inline int ep_index(int n, int dir)
+{
+ return (n << 1) | dir;
+}
+
+static inline int epidx_dir(int idx)
+{
+ return idx & 1;
+}
+
+static inline int epidx_n(int idx)
+{
+ return idx >> 1;
+}
+
+int usb_connected(void)
+{
+ return GPIO7_READ & 1;
+}
+
+static inline void usb_select_endpoint(int idx)
+{
+ ISP1582_EPINDEX = idx;
+}
+
+static inline void usb_select_setup_endpoint(void)
+{
+ ISP1582_EPINDEX = 0x20;
+}
+
+void usb_setup_endpoint(int idx, int max_pkt_size, int type)
+{
+ struct usb_endpoint *ep;
+
+ usb_select_endpoint(idx);
+ ISP1582_MAXPKSZ = max_pkt_size;
+ /* |= is in the original firmware */
+ ISP1582_EPTYPE |= 0x1c | type;
+ /* clear buffer */
+ ISP1582_CTRLFUN |= 0x10;
+ ISP1582_INTEN |= (1 << (10 + idx));
+
+ ep = &(endpoints[epidx_n(idx)]);
+ ep->halt[epidx_dir(idx)] = 0;
+ ep->enabled[epidx_dir(idx)] = 1;
+ ep->out_in_progress = 0;
+ ep->in_min_len = -1;
+ ep->in_ack = 0;
+ ep->max_pkt_size[epidx_dir(idx)] = max_pkt_size;
+}
+
+void usb_disable_endpoint(int idx)
+{
+ usb_select_endpoint(idx);
+ ISP1582_EPTYPE &= 8;
+ ISP1582_INTEN &= ~(1 << (10 + idx));
+ endpoints[epidx_n(idx)].enabled[epidx_dir(idx)] = 1;
+}
+
+void usb_reconnect(void)
+{
+ int i;
+ ISP1582_MODE &= ~1; /* SOFTCT off */
+ for (i = 0; i < 10000; i++)
+ nop_f();
+ ISP1582_MODE |= 1; /* SOFTCT on */
+}
+
+void usb_cleanup(void)
+{
+ ISP1582_MODE &= ~1; /* SOFTCT off */
+}
+
+void usb_setup(int reset)
+{
+ int i;
+
+ for (i = 0; i < N_ENDPOINTS; i++)
+ endpoints[i].enabled[0] = endpoints[i].enabled[1] = 0;
+
+ ISP1582_UNLOCK = ISP1582_UNLOCK_CODE;
+ if (!reset)
+ ISP1582_MODE = 0x88; /* CLKAON | GLINTENA */
+ ISP1582_INTCONF = 0x57;
+ ISP1582_INTEN = 0xd39;
+
+ ISP1582_ADDRESS = reset ? 0x80: 0;
+
+ usb_setup_endpoint(ep_index(0, DIR_RX), 64, 0);
+ usb_setup_endpoint(ep_index(0, DIR_TX), 64, 0);
+
+ ISP1582_MODE |= 1; /* SOFTCT on */
+
+ usb_state = STATE_DEFAULT;
+ usb_remote_wakeup = 0;
+}
+
+static int usb_get_packet(unsigned char *buf, int max_len)
+{
+ int len, i;
+ len = ISP1582_BUFLEN;
+
+ if (max_len < 0 || max_len > len)
+ max_len = len;
+
+ i = 0;
+ while (i < len)
+ {
+ unsigned short d = ISP1582_DATA;
+ if (i < max_len)
+ buf[i] = d & 0xff;
+ i++;
+ if (i < max_len)
+ buf[i] = (d >> 8) & 0xff;
+ i++;
+ }
+ return max_len;
+}
+
+static void usb_receive(int n)
+{
+ int len;
+
+ if (endpoints[n].halt[DIR_RX]
+ || !endpoints[n].enabled[DIR_RX]
+ || endpoints[n].in_min_len < 0
+ || !endpoints[n].in_ack)
+ return;
+
+ endpoints[n].in_ack = 0;
+
+ usb_select_endpoint(ep_index(n, DIR_RX));
+
+ len = usb_get_packet(endpoints[n].in_buf + endpoints[n].in_ptr,
+ endpoints[n].in_max_len - endpoints[n].in_ptr);
+ endpoints[n].in_ptr += len;
+ if (endpoints[n].in_ptr >= endpoints[n].in_min_len) {
+ endpoints[n].in_min_len = -1;
+ if (endpoints[n].in_done)
+ (*(endpoints[n].in_done))(n, endpoints[n].in_buf,
+ endpoints[n].in_ptr);
+ }
+}
+
+static int usb_out_buffer_full(int ep)
+{
+ usb_select_endpoint(ep_index(ep, DIR_TX));
+ if (ISP1582_EPTYPE & 4)
+ return (ISP1582_BUFSTAT & 3) == 3;
+ else
+ return (ISP1582_BUFSTAT & 3) != 0;
+}
+
+static void usb_send(int n)
+{
+ int max_pkt_size, len;
+ int i;
+ unsigned char *p;
+
+#ifdef LCD_DEBUG
+ if (endpoints[n].halt[DIR_TX])
+ log_char('H');
+ if (!endpoints[n].out_in_progress)
+ log_char('$');
+#endif
+
+ if (endpoints[n].halt[DIR_TX]
+ || !endpoints[n].enabled[DIR_TX]
+ || !endpoints[n].out_in_progress)
+ return;
+
+ if (endpoints[n].out_ptr < 0)
+ {
+ endpoints[n].out_in_progress = 0;
+ if (endpoints[n].out_done)
+ (*(endpoints[n].out_done))(n, endpoints[n].out_buf,
+ endpoints[n].out_len);
+ return;
+ }
+
+ if (usb_out_buffer_full(n))
+ {
+ log_char('F');
+ return;
+ }
+
+ usb_select_endpoint(ep_index(n, DIR_TX));
+ max_pkt_size = endpoints[n].max_pkt_size[DIR_TX];
+ len = endpoints[n].out_len - endpoints[n].out_ptr;
+ if (len > max_pkt_size)
+ len = max_pkt_size;
+
+ log_char('0' + (len % 10));
+ ISP1582_BUFLEN = len;
+ p = endpoints[n].out_buf + endpoints[n].out_ptr;
+ i = 0;
+ while (len - i >= 2) {
+ ISP1582_DATA = p[i] | (p[i + 1] << 8);
+ i += 2;
+ }
+ if (i < len)
+ ISP1582_DATA = p[i];
+
+ endpoints[n].out_ptr += len;
+
+/*
+ if (endpoints[n].out_ptr == endpoints[n].out_len
+ && len < max_pkt_size)
+*/
+ if (endpoints[n].out_ptr == endpoints[n].out_len)
+ endpoints[n].out_ptr = -1;
+}
+
+static void usb_stall_endpoint(int idx)
+{
+ usb_select_endpoint(idx);
+ ISP1582_CTRLFUN |= 1;
+ endpoints[epidx_n(idx)].halt[epidx_dir(idx)] = 1;
+}
+
+static void usb_unstall_endpoint(int idx)
+{
+ usb_select_endpoint(idx);
+ ISP1582_CTRLFUN &= ~1;
+ ISP1582_EPTYPE &= ~8;
+ ISP1582_EPTYPE |= 8;
+ ISP1582_CTRLFUN |= 0x10;
+ if (epidx_dir(idx) == DIR_TX)
+ endpoints[epidx_n(idx)].out_in_progress = 0;
+ else
+ {
+ endpoints[epidx_n(idx)].in_min_len = -1;
+ endpoints[epidx_n(idx)].in_ack = 0;
+ }
+ endpoints[epidx_n(idx)].halt[epidx_dir(idx)] = 0;
+}
+
+static void usb_status_ack(int dir)
+{
+ log_char(dir ? '@' : '#');
+ usb_select_endpoint(ep_index(0, dir));
+ ISP1582_CTRLFUN |= 2;
+}
+
+static void usb_set_address(int adr)
+{
+ ISP1582_ADDRESS = adr | 0x80;
+}
+
+static void usb_data_stage_enable(int dir)
+{
+ usb_select_endpoint(ep_index(0, dir));
+ ISP1582_CTRLFUN |= 4;
+}
+
+static void usb_request_error(void)
+{
+ usb_stall_endpoint(ep_index(0, DIR_TX));
+ usb_stall_endpoint(ep_index(0, DIR_RX));
+}
+
+static void usb_receive_block(unsigned char *buf, int min_len,
+ int max_len,
+ void (*in_done)(int, unsigned char *, int),
+ int ep)
+{
+ endpoints[ep].in_done = in_done;
+ endpoints[ep].in_buf = buf;
+ endpoints[ep].in_max_len = max_len;
+ endpoints[ep].in_min_len = min_len;
+ endpoints[ep].in_ptr = 0;
+ usb_receive(ep);
+}
+
+static void usb_send_block(unsigned char *buf, int len,
+ void (*done)(int, unsigned char *, int),
+ int ep)
+{
+ endpoints[ep].out_done = done;
+ endpoints[ep].out_buf = buf;
+ endpoints[ep].out_len = len;
+ endpoints[ep].out_ptr = 0;
+ endpoints[ep].out_in_progress = 1;
+ usb_send(ep);
+}
+
+static void out_send_status(int n, unsigned char *buf, int len)
+{
+ (void)n;
+ (void)buf;
+ (void)len;
+ usb_status_ack(DIR_RX);
+}
+
+static void usb_send_block_and_status(unsigned char *buf, int len, int ep)
+{
+ usb_send_block(buf, len, out_send_status, ep);
+}
+
+static void usb_setup_set_address(int adr)
+{
+ usb_set_address(adr);
+ usb_state = adr ? STATE_ADDRESS : STATE_DEFAULT;
+ usb_status_ack(DIR_TX);
+}
+
+static void usb_send_descriptor(unsigned char *device_descriptor,
+ int descriptor_len, int buffer_len)
+{
+ int len = descriptor_len < buffer_len ? descriptor_len : buffer_len;
+ usb_send_block_and_status(device_descriptor, len, 0);
+}
+
+static void usb_setup_get_descriptor(int type, int index, int lang, int len)
+{
+ (void)lang;
+ usb_data_stage_enable(DIR_TX);
+ switch (type)
+ {
+ case 1:
+ if (index == 0)
+ usb_send_descriptor(device_descriptor,
+ sizeof(device_descriptor), len);
+ else
+ usb_request_error();
+ break;
+ case 2:
+ if (index == 0)
+ usb_send_descriptor(cfg_descriptor,
+ sizeof(cfg_descriptor), len);
+ else
+ usb_request_error();
+ break;
+ case 3:
+ if (index == 0)
+ usb_send_descriptor(lang_descriptor,
+ sizeof(lang_descriptor), len);
+ else if (index <= N_STRING_DESCRIPTORS)
+ usb_send_descriptor(string_descriptor[index - 1],
+ string_descriptor[index - 1][0],
+ len);
+ else
+ usb_request_error();
+ break;
+ default:
+ usb_request_error();
+ }
+}
+
+static void usb_setup_get_configuration(void)
+{
+ setup_out_buf[0] = (usb_state == STATE_CONFIGURED) ? 1 : 0;
+ usb_data_stage_enable(DIR_TX);
+ usb_send_block_and_status(setup_out_buf, 1, 0);
+}
+
+static void usb_setup_interface(void)
+{
+ usb_setup_endpoint(ep_index(1, DIR_RX), 64, TYPE_BULK);
+ usb_setup_endpoint(ep_index(1, DIR_TX), 64, TYPE_BULK);
+}
+
+static void usb_setup_set_configuration(int value)
+{
+ switch (value)
+ {
+ case 0:
+ usb_disable_endpoint(ep_index(1, DIR_RX));
+ usb_disable_endpoint(ep_index(1, DIR_TX));
+ usb_state = STATE_ADDRESS;
+ usb_status_ack(DIR_TX);
+ break;
+ case 1:
+ usb_setup_interface();
+ usb_state = STATE_CONFIGURED;
+ usb_status_ack(DIR_TX);
+ break;
+ default:
+ usb_request_error();
+ }
+}
+
+static void usb_send_status(void)
+{
+ usb_data_stage_enable(DIR_TX);
+ usb_send_block_and_status(setup_out_buf, 2, 0);
+}
+
+static void usb_setup_get_device_status(void)
+{
+ setup_out_buf[0] = (usb_remote_wakeup != 0) ? 2 : 0;
+ setup_out_buf[1] = 0;
+ usb_send_status();
+}
+
+static void usb_setup_clear_device_feature(int feature)
+{
+ if (feature == 1) {
+ usb_remote_wakeup = 0;
+ usb_status_ack(DIR_TX);
+ } else
+ usb_request_error();
+}
+
+static void usb_setup_set_device_feature(int feature)
+{
+ if (feature == 1) {
+ usb_remote_wakeup = 1;
+ usb_status_ack(DIR_TX);
+ } else
+ usb_request_error();
+}
+
+static void usb_setup_clear_endpoint_feature(int endpoint, int feature)
+{
+ if (usb_state != STATE_CONFIGURED || feature != 0)
+ usb_request_error();
+ else if ((endpoint & 0xf) == 1)
+ {
+ usb_unstall_endpoint(ep_index(endpoint & 0xf, endpoint >> 7));
+ usb_status_ack(DIR_TX);
+ }
+ else
+ usb_request_error();
+}
+
+static void usb_setup_set_endpoint_feature(int endpoint, int feature)
+{
+ if (usb_state != STATE_CONFIGURED || feature != 0)
+ usb_request_error();
+ else if ((endpoint & 0xf) == 1)
+ {
+ usb_stall_endpoint(ep_index(endpoint & 0xf, endpoint >> 7));
+ usb_status_ack(DIR_TX);
+ }
+ else
+ usb_request_error();
+}
+
+static void usb_setup_get_interface_status(int interface)
+{
+ if (usb_state != STATE_CONFIGURED || interface != 0)
+ usb_request_error();
+ else
+ {
+ setup_out_buf[0] = setup_out_buf[1] = 0;
+ usb_send_status();
+ }
+}
+
+static void usb_setup_get_endpoint_status(int endpoint)
+{
+ if ((usb_state == STATE_CONFIGURED && (endpoint & 0xf) <= 1)
+ || (usb_state == STATE_ADDRESS && (endpoint & 0xf) == 0))
+ {
+ setup_out_buf[0] = endpoints[endpoint & 0xf].halt[endpoint >> 7];
+ setup_out_buf[1] = 0;
+ usb_send_status();
+ }
+ else
+ usb_request_error();
+}
+
+static void usb_setup_get_interface(int interface)
+{
+ if (usb_state != STATE_CONFIGURED || interface != 0)
+ usb_request_error();
+ else
+ {
+ setup_out_buf[0] = 0;
+ usb_data_stage_enable(DIR_TX);
+ usb_send_block_and_status(setup_out_buf, 1, 0);
+ }
+}
+
+static void usb_setup_set_interface(int interface, int setting)
+{
+ if (usb_state != STATE_CONFIGURED || interface != 0 || setting != 0)
+ usb_request_error();
+ else
+ {
+ usb_setup_interface();
+ usb_status_ack(DIR_TX);
+ }
+}
+
+static void usb_handle_setup_pkt(unsigned char *pkt)
+{
+ switch ((pkt[0] << 8) | pkt[1])
+ {
+ case 0x0005:
+ log_char('A');
+ usb_setup_set_address(pkt[2]);
+ break;
+ case 0x8006:
+ log_char('D');
+ usb_setup_get_descriptor(pkt[3], pkt[2], (pkt[5] << 8) | pkt[4],
+ (pkt[7] << 8) | pkt[6]);
+ break;
+ case 0x8008:
+ usb_setup_get_configuration();
+ break;
+ case 0x0009:
+ usb_setup_set_configuration(pkt[2]);
+ break;
+ case 0x8000:
+ usb_setup_get_device_status();
+ break;
+ case 0x8100:
+ usb_setup_get_interface_status(pkt[4]);
+ break;
+ case 0x8200:
+ usb_setup_get_endpoint_status(pkt[4]);
+ break;
+ case 0x0001:
+ usb_setup_clear_device_feature(pkt[2]);
+ break;
+ case 0x0201:
+ usb_setup_clear_endpoint_feature(pkt[4], pkt[2]);
+ break;
+ case 0x0003:
+ usb_setup_set_device_feature(pkt[2]);
+ break;
+ case 0x0203:
+ usb_setup_set_endpoint_feature(pkt[4], pkt[2]);
+ break;
+ case 0x810a:
+ usb_setup_get_interface(pkt[4]);
+ break;
+ case 0x010b:
+ usb_setup_set_interface(pkt[4], pkt[2]);
+ break;
+ case 0x0103:
+ /* set interface feature */
+ case 0x0101:
+ /* clear interface feature */
+ case 0x0007:
+ /* set descriptor */
+ case 0x820c:
+ /* synch frame */
+ default:
+ usb_request_error();
+ }
+}
+
+static void usb_handle_setup_rx(void)
+{
+ int len;
+#ifdef LCD_DEBUG
+ char s[20];
+ int i;
+#endif
+ usb_select_setup_endpoint();
+ len = usb_get_packet(setup_pkt_buf, 8);
+
+ if (len == 8)
+ usb_handle_setup_pkt(setup_pkt_buf);
+
+#ifdef LCD_DEBUG
+/*
+ snprintf(s, 10, "l%02x", len);
+ lcd_puts(0, 5, s);
+*/
+ for (i = 0; i < 8; i++)
+ snprintf(s + i * 2, 3, "%02x", setup_pkt_buf[i]);
+ lcd_puts(0, 0, s);
+ lcd_update();
+#endif
+}
+
+static void usb_handle_data_int(int ep, int dir)
+{
+ if (dir == DIR_TX)
+ usb_send(ep);
+ else
+ {
+ endpoints[ep].in_ack = 1;
+ usb_receive(ep);
+ }
+}
+
+static void usb_handle_int(int i)
+{
+#ifdef LCD_DEBUG
+/*
+ char s[10];
+ snprintf(s, sizeof(s), "%02d", i);
+ lcd_puts(0, 2, s);
+ lcd_update();
+*/
+ int_count[i]++;
+ if (i == 10)
+ log_char('o');
+ if (i == 11)
+ log_char('i');
+ if (i == 12)
+ log_char('O');
+ if (i == 13)
+ log_char('I');
+#endif
+
+ if (i >= 10)
+ usb_handle_data_int((i - 10) / 2, i % 2);
+ else
+ {
+ switch (i)
+ {
+ case 0:
+ log_char('r');
+ usb_setup(1);
+ break;
+ case 8:
+ log_char('s');
+ usb_handle_setup_rx();
+ break;
+ }
+ }
+
+}
+
+void usb_handle_interrupts(void)
+{
+#ifdef LCD_DEBUG
+ char s[20];
+#endif
+
+ while (1)
+ {
+ unsigned long ints;
+ int i;
+
+#ifdef LCD_DEBUG
+ /*
+ snprintf(s, sizeof(s), "i%08lx", ISP1582_INT);
+ lcd_puts(0, 2, s);
+ */
+#endif
+
+ ints = ISP1582_INT & ISP1582_INTEN;
+ if (!ints) break;
+
+ i = 0;
+ while (!(ints & (1 << i)))
+ i++;
+ ISP1582_INT = 1 << i;
+ usb_handle_int(i);
+
+#ifdef LCD_DEBUG
+ for (i = 0; i < 8; i++)
+ snprintf(s + i * 2, 3, "%02x", int_count[i]);
+ lcd_puts(0, 6, s);
+ for (i = 0; i < 8; i++)
+ snprintf(s + i * 2, 3, "%02x", int_count[i + 8]);
+ lcd_puts(0, 7, s);
+#endif
+ }
+#ifdef LCD_DEBUG
+/*
+ lcd_puts(0, 3, usb_connected() ? "C" : "N");
+ lcd_update();
+*/
+#endif
+}
+
+static inline int fifo_mod(int n)
+{
+ return (n >= SERIAL_BUF_SIZE) ? n - SERIAL_BUF_SIZE : n;
+}
+
+static void fifo_init(struct serial_fifo *fifo)
+{
+ fifo->head = fifo->tail = 0;
+}
+
+static int fifo_empty(struct serial_fifo *fifo)
+{
+ return fifo->head == fifo->tail;
+}
+
+static int fifo_full(struct serial_fifo *fifo)
+{
+ return fifo_mod(fifo->head + 1) == fifo->tail;
+}
+
+static void fifo_remove(struct serial_fifo *fifo, int n)
+{
+ fifo->tail = fifo_mod(fifo->tail + n);
+}
+
+/*
+ Not used:
+static void fifo_add(struct serial_fifo *fifo, int n)
+{
+ fifo->head = fifo_mod(fifo->head + n);
+}
+
+static void fifo_free_block(struct serial_fifo *fifo,
+ unsigned char **ptr, int *len)
+{
+ *ptr = fifo->buf + fifo->head;
+ if (fifo->head >= fifo->tail)
+ {
+ int l = SERIAL_BUF_SIZE - fifo->head;
+ if (fifo->tail == 0)
+ l--;
+ *len = l;
+ }
+ else
+ *len = fifo->tail - fifo->head - 1;
+}
+*/
+
+static int fifo_free_space(struct serial_fifo *fifo)
+{
+ if (fifo->head >= fifo->tail)
+ return SERIAL_BUF_SIZE - (fifo->head - fifo->tail) - 1;
+ else
+ return fifo->tail - fifo->head - 1;
+}
+
+static int fifo_get_byte(struct serial_fifo *fifo)
+{
+ int r = fifo->buf[fifo->tail];
+ fifo->tail = fifo_mod(fifo->tail + 1);
+ return r;
+}
+
+static void fifo_put_byte(struct serial_fifo *fifo, int b)
+{
+ fifo->buf[fifo->head] = b;
+ fifo->head = fifo_mod(fifo->head + 1);
+}
+
+static void fifo_full_block(struct serial_fifo *fifo,
+ unsigned char **ptr, int *len)
+{
+ *ptr = fifo->buf + fifo->tail;
+ if (fifo->head >= fifo->tail)
+ *len = fifo->head - fifo->tail;
+ else
+ *len = SERIAL_BUF_SIZE - fifo->tail;
+}
+
+static void serial_fill_in_fifo(int ep, unsigned char *buf, int len);
+static void serial_free_out_fifo(int ep, unsigned char *buf, int len);
+
+static void serial_restart_input(int ep)
+{
+ if (fifo_free_space(&serial_in_fifo) >= 64)
+ usb_receive_block(serial_in_pkt, 1, 64, serial_fill_in_fifo, ep);
+}
+
+static void serial_fill_in_fifo(int ep, unsigned char *buf, int len)
+{
+ int i;
+ for (i = 0; i < len; i++)
+ fifo_put_byte(&serial_in_fifo, buf[i]);
+ serial_restart_input(ep);
+}
+
+static void serial_restart_output(int ep)
+{
+ unsigned char *block;
+ int blen;
+ fifo_full_block(&serial_out_fifo, &block, &blen);
+ if (blen)
+ {
+#ifdef LCD_DEBUG
+ char s[20];
+ snprintf(s, sizeof(s), "o%03lx/%03x", block - serial_out_fifo.buf,
+ blen);
+ lcd_puts(0, 2, s);
+ lcd_update();
+#endif
+ usb_send_block(block, blen, serial_free_out_fifo, ep);
+ }
+}
+
+static void serial_free_out_fifo(int ep, unsigned char *buf, int len)
+{
+ (void)buf;
+ fifo_remove(&serial_out_fifo, len);
+ serial_restart_output(ep);
+}
+
+void usb_serial_handle(void)
+{
+#ifdef BUTTONS
+ static int t = 0;
+
+ t++;
+ if (t >= 1000)
+ {
+ int b;
+ t = 0;
+ yield();
+ b = button_get(false);
+ if (b == BUTTON_PLAY)
+ system_reboot();
+ else if (b & BUTTON_REL)
+ usb_reconnect();
+ }
+#endif
+
+
+ if (!usb_connect_state)
+ {
+ if (usb_connected())
+ {
+ int i;
+ GPIO3_SET = 4;
+ (*(volatile unsigned long *)0x80005004) = 2;
+ (*(volatile unsigned long *)0x80005008) = 0;
+ for (i = 0; i < 100000; i++)
+ nop_f();
+ usb_setup(0);
+ usb_connect_state = 1;
+ }
+ }
+ else
+ {
+ if (!usb_connected())
+ {
+ usb_connect_state = 0;
+ usb_cleanup();
+ }
+ else
+ {
+ usb_handle_interrupts();
+
+ if (usb_state == STATE_CONFIGURED)
+ {
+ if (endpoints[1].in_min_len < 0)
+ serial_restart_input(1);
+ if (!endpoints[1].out_in_progress)
+ serial_restart_output(1);
+ }
+ }
+ }
+}
+
+
+/*
+ Not used:
+static int usb_serial_in_empty(void)
+{
+ return fifo_empty(&serial_in_fifo);
+}
+*/
+
+int usb_serial_get_byte(void)
+{
+ while (fifo_empty(&serial_in_fifo))
+ usb_serial_handle();
+ return fifo_get_byte(&serial_in_fifo);
+}
+
+int usb_serial_try_get_byte(void)
+{
+ int r;
+ if (fifo_empty(&serial_in_fifo))
+ r = -1;
+ else
+ r = fifo_get_byte(&serial_in_fifo);
+ usb_serial_handle();
+ return r;
+}
+
+/*
+ Not used:
+static int usb_serial_out_full(void)
+{
+ return fifo_full(&serial_out_fifo);
+}
+*/
+
+void usb_serial_put_byte(int b)
+{
+ while (fifo_full(&serial_out_fifo))
+ usb_serial_handle();
+ fifo_put_byte(&serial_out_fifo, b);
+ usb_serial_handle();
+}
+
+int usb_serial_try_put_byte(int b)
+{
+ int r = -1;
+ if (!fifo_full(&serial_out_fifo))
+ {
+ fifo_put_byte(&serial_out_fifo, b);
+ r = 0;
+ }
+ usb_serial_handle();
+ return r;
+}
+
+void usb_serial_init(void)
+{
+ fifo_init(&serial_in_fifo);
+ fifo_init(&serial_out_fifo);
+ usb_connect_state = 0;
+}