jtag: add -ir-bypass option to newtap

[openocd.git] / src / jtag / drivers / cmsis_dap_usb_hid.c

diff --git a/src/jtag/drivers/cmsis_dap_usb_hid.c b/src/jtag/drivers/cmsis_dap_usb_hid.c
index 6338886c849b4f6ea97394e26bbe4381a226d71b..98ccc3e381b3f7ddb5a4549a5556e3b38b50ae9f 100644 (file)
--- a/src/jtag/drivers/cmsis_dap_usb_hid.c
+++ b/src/jtag/drivers/cmsis_dap_usb_hid.c
@@ -34,6 +34,36 @@ struct cmsis_dap_backend_data {
        hid_device *dev_handle;
 };
 
+struct cmsis_dap_report_size {
+       unsigned short vid;
+       unsigned short pid;
+       unsigned int report_size;
+};
+
+static const struct cmsis_dap_report_size report_size_quirks[] = {
+       /* Third gen Atmel tools use a report size of 512 */
+    /* This list of PIDs comes from toolinfo.py in Microchip's pyedbglib. */
+       // Atmel JTAG-ICE 3
+       { .vid = 0x03eb, .pid = 0x2140, .report_size = 512 },
+       // Atmel-ICE
+       { .vid = 0x03eb, .pid = 0x2141, .report_size = 512 },
+       // Atmel Power Debugger
+       { .vid = 0x03eb, .pid = 0x2144, .report_size = 512 },
+       // EDBG (found on Xplained Pro boards)
+       { .vid = 0x03eb, .pid = 0x2111, .report_size = 512 },
+       // Zero (???)
+       { .vid = 0x03eb, .pid = 0x2157, .report_size = 512 },
+       // EDBG with Mass Storage (found on Xplained Pro boards)
+       { .vid = 0x03eb, .pid = 0x2169, .report_size = 512 },
+       // Commercially available EDBG (for third-party use)
+       { .vid = 0x03eb, .pid = 0x216a, .report_size = 512 },
+       // Kraken (???)
+       { .vid = 0x03eb, .pid = 0x2170, .report_size = 512 },
+
+       { .vid = 0, .pid = 0, .report_size = 0 }
+};
+
+
 static void cmsis_dap_hid_close(struct cmsis_dap *dap);
 static int cmsis_dap_hid_alloc(struct cmsis_dap *dap, unsigned int pkt_sz);
 static void cmsis_dap_hid_free(struct cmsis_dap *dap);
@@ -139,13 +169,15 @@ static int cmsis_dap_hid_open(struct cmsis_dap *dap, uint16_t vids[], uint16_t p
 
        unsigned int packet_size = 64;
 
-       /* atmel cmsis-dap uses 512 byte reports */
-       /* except when it doesn't e.g. with mEDBG on SAMD10 Xplained
-        * board */
+       /* Check for adapters that are known to have unusual report lengths. */
+       for (i = 0; report_size_quirks[i].vid != 0; i++) {
+               if (report_size_quirks[i].vid == target_vid &&
+                   report_size_quirks[i].pid == target_pid) {
+                       packet_size = report_size_quirks[i].report_size;
+               }
+       }
        /* TODO: HID report descriptor should be parsed instead of
-        * hardcoding a match by VID */
-       if (target_vid == 0x03eb && target_pid != 0x2145 && target_pid != 0x2175)
-               packet_size = 512;
+        * hardcoding a match by VID/PID */
 
        dap->bdata->dev_handle = dev;
 
@@ -236,6 +268,10 @@ static void cmsis_dap_hid_free(struct cmsis_dap *dap)
        dap->packet_buffer = NULL;
 }
 
+static void cmsis_dap_hid_cancel_all(struct cmsis_dap *dap)
+{
+}
+
 const struct cmsis_dap_backend cmsis_dap_hid_backend = {
        .name = "hid",
        .open = cmsis_dap_hid_open,
@@ -244,4 +280,5 @@ const struct cmsis_dap_backend cmsis_dap_hid_backend = {
        .write = cmsis_dap_hid_write,
        .packet_buffer_alloc = cmsis_dap_hid_alloc,
        .packet_buffer_free = cmsis_dap_hid_free,
+       .cancel_all = cmsis_dap_hid_cancel_all,
 };