From 1bc1538613d66cef3cbce680fc8d7c3561a0fbd0 Mon Sep 17 00:00:00 2001 From: Peter Tyser Date: Fri, 10 Jul 2009 11:03:19 -0500 Subject: Move examples/ to examples/standalone The current files in examples are all standalone application examples, so put them in their own subdirectory for organizational purposes Signed-off-by: Peter Tyser --- examples/mem_to_mem_idma2intr.c | 384 ---------------------------------------- 1 file changed, 384 deletions(-) delete mode 100644 examples/mem_to_mem_idma2intr.c (limited to 'examples/mem_to_mem_idma2intr.c') diff --git a/examples/mem_to_mem_idma2intr.c b/examples/mem_to_mem_idma2intr.c deleted file mode 100644 index 15779d0a16..0000000000 --- a/examples/mem_to_mem_idma2intr.c +++ /dev/null @@ -1,384 +0,0 @@ -/* The dpalloc function used and implemented in this file was derieved - * from PPCBoot/U-Boot file "cpu/mpc8260/commproc.c". - */ - -/* Author: Arun Dharankar - * This example is meant to only demonstrate how the IDMA could be used. - */ - -/* - * This file is based on "arch/ppc/8260_io/commproc.c" - here is it's - * copyright notice: - * - * General Purpose functions for the global management of the - * 8260 Communication Processor Module. - * Copyright (c) 1999 Dan Malek (dmalek@jlc.net) - * Copyright (c) 2000 MontaVista Software, Inc (source@mvista.com) - * 2.3.99 Updates - * - * In addition to the individual control of the communication - * channels, there are a few functions that globally affect the - * communication processor. - * - * Buffer descriptors must be allocated from the dual ported memory - * space. The allocator for that is here. When the communication - * process is reset, we reclaim the memory available. There is - * currently no deallocator for this memory. - */ - - -#include -#include - -DECLARE_GLOBAL_DATA_PTR; - -#define STANDALONE - -#ifndef STANDALONE /* Linked into/Part of PPCBoot */ -#include -#include -#else /* Standalone app of PPCBoot */ -#define WATCHDOG_RESET() { \ - *(ushort *)(CONFIG_SYS_IMMR + 0x1000E) = 0x556c; \ - *(ushort *)(CONFIG_SYS_IMMR + 0x1000E) = 0xaa39; \ - } -#endif /* STANDALONE */ - -static int debug = 1; - -#define DEBUG(fmt, args...) { \ - if(debug != 0) { \ - printf("[%s %d %s]: ",__FILE__,__LINE__,__FUNCTION__); \ - printf(fmt, ##args); \ - } \ -} - -#define CPM_CR_IDMA1_SBLOCK (0x14) -#define CPM_CR_IDMA2_SBLOCK (0x15) -#define CPM_CR_IDMA3_SBLOCK (0x16) -#define CPM_CR_IDMA4_SBLOCK (0x17) -#define CPM_CR_IDMA1_PAGE (0x07) -#define CPM_CR_IDMA2_PAGE (0x08) -#define CPM_CR_IDMA3_PAGE (0x09) -#define CPM_CR_IDMA4_PAGE (0x0a) -#define PROFF_IDMA1_BASE ((uint)0x87fe) -#define PROFF_IDMA2_BASE ((uint)0x88fe) -#define PROFF_IDMA3_BASE ((uint)0x89fe) -#define PROFF_IDMA4_BASE ((uint)0x8afe) - -#define CPM_CR_INIT_TRX ((ushort)0x0000) -#define CPM_CR_FLG ((ushort)0x0001) - -#define mk_cr_cmd(PG, SBC, MCN, OP) \ - ((PG << 26) | (SBC << 21) | (MCN << 6) | OP) - - -#pragma pack(1) -typedef struct ibdbits { - unsigned b_valid:1; - unsigned b_resv1:1; - unsigned b_wrap:1; - unsigned b_interrupt:1; - unsigned b_last:1; - unsigned b_resv2:1; - unsigned b_cm:1; - unsigned b_resv3:2; - unsigned b_sdn:1; - unsigned b_ddn:1; - unsigned b_dgbl:1; - unsigned b_dbo:2; - unsigned b_resv4:1; - unsigned b_ddtb:1; - unsigned b_resv5:2; - unsigned b_sgbl:1; - unsigned b_sbo:2; - unsigned b_resv6:1; - unsigned b_sdtb:1; - unsigned b_resv7:9; -} ibdbits_t; - -#pragma pack(1) -typedef union ibdbitsu { - ibdbits_t b; - uint i; -} ibdbitsu_t; - -#pragma pack(1) -typedef struct idma_buf_desc { - ibdbitsu_t ibd_bits; /* Status and Control */ - uint ibd_datlen; /* Data length in buffer */ - uint ibd_sbuf; /* Source buffer addr in host mem */ - uint ibd_dbuf; /* Destination buffer addr in host mem */ -} ibd_t; - - -#pragma pack(1) -typedef struct dcmbits { - unsigned b_fb:1; - unsigned b_lp:1; - unsigned b_resv1:3; - unsigned b_tc2:1; - unsigned b_resv2:1; - unsigned b_wrap:3; - unsigned b_sinc:1; - unsigned b_dinc:1; - unsigned b_erm:1; - unsigned b_dt:1; - unsigned b_sd:2; -} dcmbits_t; - -#pragma pack(1) -typedef union dcmbitsu { - dcmbits_t b; - ushort i; -} dcmbitsu_t; - -#pragma pack(1) -typedef struct pram_idma { - ushort pi_ibase; - dcmbitsu_t pi_dcmbits; - ushort pi_ibdptr; - ushort pi_dprbuf; - ushort pi_bufinv; /* internal to CPM */ - ushort pi_ssmax; - ushort pi_dprinptr; /* internal to CPM */ - ushort pi_sts; - ushort pi_dproutptr; /* internal to CPM */ - ushort pi_seob; - ushort pi_deob; - ushort pi_dts; - ushort pi_retadd; - ushort pi_resv1; /* internal to CPM */ - uint pi_bdcnt; - uint pi_sptr; - uint pi_dptr; - uint pi_istate; -} pram_idma_t; - - -volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; -volatile ibd_t *bdf; -volatile pram_idma_t *piptr; - -volatile int dmadone; -volatile int *dmadonep = &dmadone; -void dmadone_handler (void *); - -int idma_init (void); -void idma_start (int, int, int, uint, uint, int); -uint dpalloc (uint, uint); - - -uint dpinit_done = 0; - - -#ifdef STANDALONE -int ctrlc (void) -{ - if (tstc()) { - switch (getc ()) { - case 0x03: /* ^C - Control C */ - return 1; - default: - break; - } - } - return 0; -} -void * memset(void * s,int c,size_t count) -{ - char *xs = (char *) s; - while (count--) - *xs++ = c; - return s; -} -int memcmp(const void * cs,const void * ct,size_t count) -{ - const unsigned char *su1, *su2; - int res = 0; - for( su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--) - if ((res = *su1 - *su2) != 0) - break; - return res; -} -#endif /* STANDALONE */ - -#ifdef STANDALONE -int mem_to_mem_idma2intr (int argc, char *argv[]) -#else -int do_idma (bd_t * bd, int argc, char *argv[]) -#endif /* STANDALONE */ -{ - int i; - - app_startup(argv); - dpinit_done = 0; - - idma_init (); - - DEBUG ("Installing dma handler\n"); - install_hdlr (7, dmadone_handler, (void *) bdf); - - memset ((void *) 0x100000, 'a', 512); - memset ((void *) 0x200000, 'b', 512); - - for (i = 0; i < 32; i++) { - printf ("Startin IDMA, iteration=%d\n", i); - idma_start (1, 1, 512, 0x100000, 0x200000, 3); - } - - DEBUG ("Uninstalling dma handler\n"); - free_hdlr (7); - - return 0; -} - -void -idma_start (int sinc, int dinc, int sz, uint sbuf, uint dbuf, int ttype) -{ - /* ttype is for M-M, M-P, P-M or P-P: not used for now */ - - piptr->pi_istate = 0; /* manual says: clear it before every START_IDMA */ - piptr->pi_dcmbits.b.b_resv1 = 0; - - if (sinc == 1) - piptr->pi_dcmbits.b.b_sinc = 1; - else - piptr->pi_dcmbits.b.b_sinc = 0; - - if (dinc == 1) - piptr->pi_dcmbits.b.b_dinc = 1; - else - piptr->pi_dcmbits.b.b_dinc = 0; - - piptr->pi_dcmbits.b.b_erm = 0; - piptr->pi_dcmbits.b.b_sd = 0x00; /* M-M */ - - bdf->ibd_sbuf = sbuf; - bdf->ibd_dbuf = dbuf; - bdf->ibd_bits.b.b_cm = 0; - bdf->ibd_bits.b.b_interrupt = 1; - bdf->ibd_bits.b.b_wrap = 1; - bdf->ibd_bits.b.b_last = 1; - bdf->ibd_bits.b.b_sdn = 0; - bdf->ibd_bits.b.b_ddn = 0; - bdf->ibd_bits.b.b_dgbl = 0; - bdf->ibd_bits.b.b_ddtb = 0; - bdf->ibd_bits.b.b_sgbl = 0; - bdf->ibd_bits.b.b_sdtb = 0; - bdf->ibd_bits.b.b_dbo = 1; - bdf->ibd_bits.b.b_sbo = 1; - bdf->ibd_bits.b.b_valid = 1; - bdf->ibd_datlen = 512; - - *dmadonep = 0; - - immap->im_sdma.sdma_idmr2 = (uchar) 0xf; - - immap->im_cpm.cp_cpcr = mk_cr_cmd (CPM_CR_IDMA2_PAGE, - CPM_CR_IDMA2_SBLOCK, 0x0, - 0x9) | 0x00010000; - - while (*dmadonep != 1) { - if (ctrlc ()) { - DEBUG ("\nInterrupted waiting for DMA interrupt.\n"); - goto done; - } - printf ("Waiting for DMA interrupt (dmadone=%d b_valid = %d)...\n", - dmadone, bdf->ibd_bits.b.b_valid); - udelay (1000000); - } - printf ("DMA complete notification received!\n"); - - done: - DEBUG ("memcmp(0x%08x, 0x%08x, 512) = %d\n", - sbuf, dbuf, memcmp ((void *) sbuf, (void *) dbuf, 512)); - - return; -} - -#define MAX_INT_BUFSZ 64 -#define DCM_WRAP 0 /* MUST be consistant with MAX_INT_BUFSZ */ - -int idma_init (void) -{ - uint memaddr; - - immap->im_cpm.cp_rccr &= ~0x00F3FFFF; - immap->im_cpm.cp_rccr |= 0x00A00A00; - - memaddr = dpalloc (sizeof (pram_idma_t), 64); - - *(volatile ushort *) &immap->im_dprambase[PROFF_IDMA2_BASE] = memaddr; - piptr = (volatile pram_idma_t *) ((uint) (immap) + memaddr); - - piptr->pi_resv1 = 0; /* manual says: clear it */ - piptr->pi_dcmbits.b.b_fb = 0; - piptr->pi_dcmbits.b.b_lp = 1; - piptr->pi_dcmbits.b.b_erm = 0; - piptr->pi_dcmbits.b.b_dt = 0; - - memaddr = (uint) dpalloc (sizeof (ibd_t), 64); - piptr->pi_ibase = piptr->pi_ibdptr = (volatile short) memaddr; - bdf = (volatile ibd_t *) ((uint) (immap) + memaddr); - bdf->ibd_bits.b.b_valid = 0; - - memaddr = (uint) dpalloc (64, 64); - piptr->pi_dprbuf = (volatile ushort) memaddr; - piptr->pi_dcmbits.b.b_wrap = 4; - piptr->pi_ssmax = 32; - - piptr->pi_sts = piptr->pi_ssmax; - piptr->pi_dts = piptr->pi_ssmax; - - return 1; -} - -void dmadone_handler (void *arg) -{ - immap->im_sdma.sdma_idmr2 = (uchar) 0x0; - - *dmadonep = 1; - - return; -} - - -static uint dpbase = 0; - -uint dpalloc (uint size, uint align) -{ - volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; - uint retloc; - uint align_mask, off; - uint savebase; - - /* Pointer to initial global data area */ - - if (dpinit_done == 0) { - dpbase = gd->dp_alloc_base; - dpinit_done = 1; - } - - align_mask = align - 1; - savebase = dpbase; - - if ((off = (dpbase & align_mask)) != 0) - dpbase += (align - off); - - if ((off = size & align_mask) != 0) - size += align - off; - - if ((dpbase + size) >= gd->dp_alloc_top) { - dpbase = savebase; - printf ("dpalloc: ran out of dual port ram!"); - return 0; - } - - retloc = dpbase; - dpbase += size; - - memset ((void *) &immr->im_dprambase[retloc], 0, size); - - return (retloc); -} -- cgit v1.2.3