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TD's no longer hard allocated

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3252 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2011-01-15 17:46:55 +00:00
parent 54354db02a
commit f8e8f1dec3
2 changed files with 356 additions and 182 deletions
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arch/arm/src/lpc17xx/lpc17_ohciram.h
+45 -25
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@@ -112,10 +112,6 @@
#define LPC17_HCCA_SIZE 256
/* Fixed transfer descriptor size */
#define LPC17_TD_SIZE 16
/* Fixed endpoint descriptor size. The actual size required by the hardware is only
* 16 bytes, however, we set aside an additional 16 bytes for for internal use by
* the OHCI host driver. 16-bytes is set aside because the EDs must still be
@@ -136,7 +132,29 @@
#define LPC17_EDFREE_SIZE (CONFIG_USBHOST_NEDS * LPC17_ED_SIZE)
/* Configurable number of descriptor buffer (TDBUFFER) */
/* Fixed transfer descriptor size. The actual size required by the hardware is only
* 16 bytes, however, we set aside an additional 16 bytes for for internal use by
* the OHCI host driver. 16-bytes is set aside because the TDs must still be
* aligned to 16-byte boundaries.
*/
#define LPC17_TD_SIZE 32
/* Configurable number of user transfer descriptors (TDs). */
#ifndef CONFIG_USBHOST_NTDS
# define CONFIG_USBHOST_NTDS 3
#endif
#if CONFIG_USBHOST_NTDS < 2
# error "Insufficent TDs"
#endif
/* Derived size of user trasnfer descriptor (TD) memory. */
#define LPC17_TDFREE_SIZE (CONFIG_USBHOST_NTDS * LPC17_TD_SIZE)
/* Configurable number of request/descriptor buffers (TDBUFFER) */
#ifndef CONFIG_USBHOST_TDBUFFERS
# define CONFIG_USBHOST_TDBUFFERS 2
@@ -156,7 +174,7 @@
# error "TD buffer size must be an even number of 32-bit words"
#endif
#define LPC17_TDFREE_SIZE (CONFIG_USBHOST_TDBUFFERS * CONFIG_USBHOST_TDBUFSIZE)
#define LPC17_TBFREE_SIZE (CONFIG_USBHOST_TDBUFFERS * CONFIG_USBHOST_TDBUFSIZE)
/* Configurable size of an IO buffer. The number of IO buffers will be determined
* by what is left at the end of the BANK1 memory setup aside of OHCI RAM.
@@ -177,43 +195,45 @@
* LPC17_BANK1_SIZE 16384
*
* Configuration:
* CONFIG_USBHOST_OHCIRAM_SIZE 1280
* CONFIG_USBHOST_OHCIRAM_SIZE 1536
* CONFIG_USBHOST_NEDS 2
* CONFIG_USBHOST_TDBUFFERS 2
* CONFIG_USBHOST_NEDS 3
* CONFIG_USBHOST_TDBUFFERS 3
* CONFIG_USBHOST_TDBUFSIZE 128
* CONFIG_USBHOST_IOBUFSIZE 512
*
* Sizes of things
* LPC17_EDFREE_SIZE 96 (including EP0)
* LPC17_TDFREE_SIZE 256
* LPC17_IOFREE_SIZE 512
* LPC17_EDFREE_SIZE 64 0x00000040
* LPC17_TDFREE_SIZE 96 0x00000060
* LPC17_TBFREE_SIZE 384 0x00000100
* LPC17_IOFREE_SIZE 512 0x00000200
*
* Memory Layout
* LPC17_OHCIRAM_END (0x20008000 + 16384) = 0x2000c000
* LPC17_OHCIRAM_BASE (0x2000c000 - 1280) = 0x2000bb00
* LPC17_OHCIRAM_END (0x20008000 + 16384) = 0x20084000
* LPC17_OHCIRAM_BASE (0x2000c000 - 1536) = 0x2000ba00
* LPC17_OHCIRAM_SIZE 1280
* LPC17_BANK1_HEAPBASE 0x20008000
* LPC17_BANK1_HEAPSIZE (16384 - 1280) = 15104
*
* LPC17_HCCA_BASE 0x2000bb00
* LPC17_TDHEAD_ADDR 0x2000bc00
* LPC17_TDTAIL_ADDR 0x2000bc10
* LPC17_EDCTRL_ADDR 0x2000bc20
* LPC17_EDFREE_BASE 0x2000bc40
* LPC17_TDFREE_BASE 0x2000bc80
* LPC17_IOFREE_BASE 0x2000bd80
* LPC17_IOBUFFERS (0x2000c000 - 0x2000bd80) / 512 = 640/512 = 1
* LPC17_HCCA_BASE 0x20083a00 -- Communications area
* LPC17_TDTAIL_ADDR 0x20083b00 -- Common. pre-allocated tail TD
* LPC17_EDCTRL_ADDR 0x20083b20 -- Pre-allocated ED for EP0
* LPC17_EDFREE_BASE 0x20083b40 -- Free EDs
* LPC17_TDFREE_BASE 0x20083b80 -- Free TDs
* LPC17_TBFREE_BASE 0x20083be0 -- Free request/descriptor buffers
* LPC17_IOFREE_BASE 0x20083d60 -- Free large I/O buffers
* LPC17_IOBUFFERS (0x20084000 - 0x20083d60) / 512 = 672/512 = 1
*
* Wasted memory: 640-512 = 128 bytes
* Wasted memory: 672-512 = 160 bytes
*/
#define LPC17_HCCA_BASE (LPC17_OHCIRAM_BASE)
#define LPC17_TDHEAD_ADDR (LPC17_OHCIRAM_BASE + LPC17_HCCA_SIZE)
#define LPC17_TDTAIL_ADDR (LPC17_TDHEAD_ADDR + LPC17_TD_SIZE)
#define LPC17_TDTAIL_ADDR (LPC17_HCCA_BASE + LPC17_HCCA_SIZE)
#define LPC17_EDCTRL_ADDR (LPC17_TDTAIL_ADDR + LPC17_TD_SIZE)
#define LPC17_EDFREE_BASE (LPC17_EDCTRL_ADDR + LPC17_ED_SIZE)
#define LPC17_TDFREE_BASE (LPC17_EDFREE_BASE + LPC17_EDFREE_SIZE)
#define LPC17_IOFREE_BASE (LPC17_TDFREE_BASE + LPC17_TDFREE_SIZE)
#define LPC17_TBFREE_BASE (LPC17_TDFREE_BASE + LPC17_TDFREE_SIZE)
#define LPC17_IOFREE_BASE (LPC17_TBFREE_BASE + LPC17_TBFREE_SIZE)
#if LPC17_IOFREE_BASE > LPC17_OHCIRAM_END
# error "Insufficient OHCI RAM allocated"
arch/arm/src/lpc17xx/lpc17_usbhost.c
+311 -157
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