devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

jz4760: Heavily rework USB driver to add working DMA support

Browse source 
* DMA Bulk IN (ie our TX) results in sequential transfers 33-68% faster.
 * DMA Bulk OUT (ie RX) is mostly stripped out due to complete brokenness.
 * Interrupt and control endpoints remain PIO-driven.

Other improvements:

1) Use consistent endpoint references (no magic numbers)
2) Greatly enhanced logging
3) DMA support can be compiled out completely
4) Setting lockswitch will disable all DMA operations at runtime
5) Much more robust error checking and recovery

Change-Id: I57b82e655e55ced0dfe289e379b0b61d8fe443b4
This commit is contained in:
Solomon Peachy 2020-09-14 20:36:24 -04:00
parent a66b908801
commit ec413f7692
4 changed files with 261 additions and 138 deletions
Download patch file Download diff file Expand all files Collapse all files

5
utils/hwstub/stub/jz4760b/jz4760b.h
View file

@ -6966,6 +6966,8 @@ do { \
#define USB_FIFO_EP(n) (USB_BASE + (n)*4 + 0x20)
#define USB_HWVERS (USB_BASE + 0x6c)
#define USB_EPINFO (USB_BASE + 0x78) /* Endpoint information */
#define USB_RAMINFO (USB_BASE + 0x79) /* RAM information */
@ -7006,6 +7008,7 @@ do { \
#define USB_INCSRH_DMAREQENAB 0x10
#define USB_INCSRH_FRCDATATOG 0x08
#define USB_INCSRH_DMAREQMODE 0x04
#define USB_INCSR_INCOMPTX 0x80
#define USB_INCSR_CDT 0x40
#define USB_INCSR_SENTSTALL 0x20
#define USB_INCSR_SENDSTALL 0x10
@ -7083,6 +7086,8 @@ do { \
#define REG_USB_ADDR(n) REG32(USB_ADDR(n))
#define REG_USB_COUNT(n) REG32(USB_COUNT(n))
#define REG_USB_HWVERS REG16(USB_HWVERS)
#define REG_USB_EPINFO REG8(USB_EPINFO)
#define REG_USB_RAMINFO REG8(USB_RAMINFO)