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Diffstat (limited to 'target/linux/brcm2708/patches-3.10/0032-Add-NAK-holdoff-scheme.-Enabled-by-default-disable-w.patch')
-rw-r--r--target/linux/brcm2708/patches-3.10/0032-Add-NAK-holdoff-scheme.-Enabled-by-default-disable-w.patch212
1 files changed, 0 insertions, 212 deletions
diff --git a/target/linux/brcm2708/patches-3.10/0032-Add-NAK-holdoff-scheme.-Enabled-by-default-disable-w.patch b/target/linux/brcm2708/patches-3.10/0032-Add-NAK-holdoff-scheme.-Enabled-by-default-disable-w.patch
deleted file mode 100644
index 4144829503..0000000000
--- a/target/linux/brcm2708/patches-3.10/0032-Add-NAK-holdoff-scheme.-Enabled-by-default-disable-w.patch
+++ /dev/null
@@ -1,212 +0,0 @@
-From 56822de577325e209a9ecfcf3e62d8bb70c2f2cc Mon Sep 17 00:00:00 2001
-From: popcornmix <popcornmix@gmail.com>
-Date: Mon, 8 Apr 2013 21:12:48 +0100
-Subject: [PATCH 032/196] Add NAK holdoff scheme. Enabled by default, disable
- with dwc_otg.nak_holdoff_enable=0. Thanks gsh
-
----
- drivers/usb/host/dwc_otg/dwc_otg_driver.c | 7 ++++++-
- drivers/usb/host/dwc_otg/dwc_otg_hcd.c | 22 +++++++++++++++++++++-
- drivers/usb/host/dwc_otg/dwc_otg_hcd.h | 5 +++++
- drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c | 21 +++++++++++++++++++--
- drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c | 19 +++++++++++++++++++
- 5 files changed, 70 insertions(+), 4 deletions(-)
-
-diff --git a/drivers/usb/host/dwc_otg/dwc_otg_driver.c b/drivers/usb/host/dwc_otg/dwc_otg_driver.c
-index 3ac720b..d353a9a 100644
---- a/drivers/usb/host/dwc_otg/dwc_otg_driver.c
-+++ b/drivers/usb/host/dwc_otg/dwc_otg_driver.c
-@@ -243,6 +243,9 @@ static struct dwc_otg_driver_module_params dwc_otg_module_params = {
- //Global variable to switch the fiq fix on or off (declared in bcm2708.c)
- extern bool fiq_fix_enable;
-
-+//Global variable to switch the nak holdoff on or off
-+bool nak_holdoff_enable = true;
-+
-
- /**
- * This function shows the Driver Version.
-@@ -1086,6 +1089,7 @@ static int __init dwc_otg_driver_init(void)
- return retval;
- }
- printk(KERN_DEBUG "dwc_otg: FIQ %s\n", fiq_fix_enable ? "enabled":"disabled");
-+ printk(KERN_DEBUG "dwc_otg: NAK holdoff %s\n", nak_holdoff_enable ? "enabled":"disabled");
-
- error = driver_create_file(drv, &driver_attr_version);
- #ifdef DEBUG
-@@ -1366,9 +1370,10 @@ MODULE_PARM_DESC(otg_ver, "OTG revision supported 0=OTG 1.3 1=OTG 2.0");
- module_param(microframe_schedule, bool, 0444);
- MODULE_PARM_DESC(microframe_schedule, "Enable the microframe scheduler");
-
--
- module_param(fiq_fix_enable, bool, 0444);
- MODULE_PARM_DESC(fiq_fix_enable, "Enable the fiq fix");
-+module_param(nak_holdoff_enable, bool, 0444);
-+MODULE_PARM_DESC(nak_holdoff_enable, "Enable the NAK holdoff");
-
- /** @page "Module Parameters"
- *
-diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
-index 0ce7e46..2b7945a 100644
---- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
-+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
-@@ -527,6 +527,8 @@ int dwc_otg_hcd_urb_dequeue(dwc_otg_hcd_t * hcd,
- {
- dwc_otg_qh_t *qh;
- dwc_otg_qtd_t *urb_qtd;
-+ BUG_ON(!hcd);
-+ BUG_ON(!dwc_otg_urb);
-
- #ifdef DEBUG /* integrity checks (Broadcom) */
-
-@@ -543,14 +545,17 @@ int dwc_otg_hcd_urb_dequeue(dwc_otg_hcd_t * hcd,
- return -DWC_E_INVALID;
- }
- urb_qtd = dwc_otg_urb->qtd;
-+ BUG_ON(!urb_qtd);
- if (urb_qtd->qh == NULL) {
- DWC_ERROR("**** DWC OTG HCD URB Dequeue with QTD with NULL Q handler\n");
- return -DWC_E_INVALID;
- }
- #else
- urb_qtd = dwc_otg_urb->qtd;
-+ BUG_ON(!urb_qtd);
- #endif
- qh = urb_qtd->qh;
-+ BUG_ON(!qh);
- if (CHK_DEBUG_LEVEL(DBG_HCDV | DBG_HCD_URB)) {
- if (urb_qtd->in_process) {
- dump_channel_info(hcd, qh);
-@@ -1309,6 +1314,22 @@ dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t * hcd)
- num_channels - hcd->periodic_channels) &&
- !DWC_CIRCLEQ_EMPTY(&hcd->free_hc_list)) {
-
-+ qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
-+
-+ /*
-+ * Check to see if this is a NAK'd retransmit, in which case ignore for retransmission
-+ * we hold off on bulk retransmissions to reduce NAK interrupt overhead for
-+ * cheeky devices that just hold off using NAKs
-+ */
-+ if (dwc_full_frame_num(qh->nak_frame) == dwc_full_frame_num(dwc_otg_hcd_get_frame_number(hcd))) {
-+ // Make fiq interrupt run on next frame (i.e. 8 uframes)
-+ g_next_sched_frame = ((qh->nak_frame + 8) & ~7) & DWC_HFNUM_MAX_FRNUM;
-+ qh_ptr = DWC_LIST_NEXT(qh_ptr);
-+ continue;
-+ }
-+ else
-+ qh->nak_frame = 0xffff;
-+
- if (microframe_schedule) {
- DWC_SPINLOCK_IRQSAVE(channel_lock, &flags);
- if (hcd->available_host_channels < 1) {
-@@ -1321,7 +1342,6 @@ dwc_otg_transaction_type_e dwc_otg_hcd_select_transactions(dwc_otg_hcd_t * hcd)
- last_sel_trans_num_nonper_scheduled++;
- #endif /* DEBUG_HOST_CHANNELS */
- }
-- qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
-
- assign_and_init_hc(hcd, qh);
-
-diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd.h b/drivers/usb/host/dwc_otg/dwc_otg_hcd.h
-index 6d82127..45e44ea 100644
---- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.h
-+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.h
-@@ -321,6 +321,11 @@ typedef struct dwc_otg_qh {
- */
- uint16_t sched_frame;
-
-+ /*
-+ ** Frame a NAK was received on this queue head, used to minimise NAK retransmission
-+ */
-+ uint16_t nak_frame;
-+
- /** (micro)frame at which last start split was initialized. */
- uint16_t start_split_frame;
-
-diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
-index 21e8f09..3e762e2 100644
---- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
-+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
-@@ -56,7 +56,12 @@ int fiq_done, int_done;
- int g_next_sched_frame, g_np_count, g_np_sent, g_work_expected;
- static int mphi_int_count = 0 ;
-
--extern bool fiq_fix_enable;
-+extern bool fiq_fix_enable, nak_holdoff_enable;
-+
-+hcchar_data_t nak_hcchar;
-+hctsiz_data_t nak_hctsiz;
-+hcsplt_data_t nak_hcsplt;
-+int nak_count;
-
- void __attribute__ ((naked)) dwc_otg_hcd_handle_fiq(void)
- {
-@@ -230,7 +235,7 @@ exit_handler_routine:
- DWC_WRITE_REG32(c_mphi_regs.ctrl, (1<<31));
- mphi_int_count = 0;
- }
-- int_done++;
-+ int_done++;
- if((jiffies / HZ) > last_time)
- {
- /* Once a second output the fiq and irq numbers, useful for debug */
-@@ -1419,6 +1424,18 @@ static int32_t handle_hc_nak_intr(dwc_otg_hcd_t * hcd,
- "NAK Received--\n", hc->hc_num);
-
- /*
-+ * When we get bulk NAKs then remember this so we holdoff on this qh until
-+ * the beginning of the next frame
-+ */
-+ switch(dwc_otg_hcd_get_pipe_type(&qtd->urb->pipe_info)) {
-+ case UE_BULK:
-+ //case UE_INTERRUPT:
-+ //case UE_CONTROL:
-+ if (nak_holdoff_enable)
-+ hc->qh->nak_frame = dwc_otg_hcd_get_frame_number(hcd);
-+ }
-+
-+ /*
- * Handle NAK for IN/OUT SSPLIT/CSPLIT transfers, bulk, control, and
- * interrupt. Re-start the SSPLIT transfer.
- */
-diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c b/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
-index ac10323..e6b2a7b 100644
---- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
-+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
-@@ -181,6 +181,7 @@ void qh_init(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh, dwc_otg_hcd_urb_t * urb)
- if (microframe_schedule)
- qh->speed = dev_speed;
-
-+ qh->nak_frame = 0xffff;
-
- if (((dev_speed == USB_SPEED_LOW) ||
- (dev_speed == USB_SPEED_FULL)) &&
-@@ -764,6 +765,24 @@ void dwc_otg_hcd_qh_deactivate(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh,
- int sched_next_periodic_split)
- {
- if (dwc_qh_is_non_per(qh)) {
-+
-+ dwc_otg_qh_t *qh_tmp;
-+ dwc_list_link_t *qh_list;
-+ DWC_LIST_FOREACH(qh_list, &hcd->non_periodic_sched_inactive)
-+ {
-+ qh_tmp = DWC_LIST_ENTRY(qh_list, struct dwc_otg_qh, qh_list_entry);
-+ if(qh_tmp == qh)
-+ {
-+ /*
-+ * FIQ is being disabled because this one nevers gets a np_count increment
-+ * This is still not absolutely correct, but it should fix itself with
-+ * just an unnecessary extra interrupt
-+ */
-+ g_np_sent = g_np_count;
-+ }
-+ }
-+
-+
- dwc_otg_hcd_qh_remove(hcd, qh);
- if (!DWC_CIRCLEQ_EMPTY(&qh->qtd_list)) {
- /* Add back to inactive non-periodic schedule. */
---
-1.9.1
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-15 03:31:48 +0000