diff options
Diffstat (limited to 'arch/powerpc/sysdev/bestcomm/ata.c')
| -rw-r--r-- | arch/powerpc/sysdev/bestcomm/ata.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/arch/powerpc/sysdev/bestcomm/ata.c b/arch/powerpc/sysdev/bestcomm/ata.c deleted file mode 100644 index 901c9f91e5dd..000000000000 --- a/arch/powerpc/sysdev/bestcomm/ata.c +++ /dev/null @@ -1,157 +0,0 @@ -/* - * Bestcomm ATA task driver - * - * - * Patterned after bestcomm/fec.c by Dale Farnsworth <dfarnsworth@mvista.com> - * 2003-2004 (c) MontaVista, Software, Inc. - * - * Copyright (C) 2006-2007 Sylvain Munaut <tnt@246tNt.com> - * Copyright (C) 2006 Freescale - John Rigby - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/types.h> -#include <asm/io.h> - -#include "bestcomm.h" -#include "bestcomm_priv.h" -#include "ata.h" - - -/* ======================================================================== */ -/* Task image/var/inc */ -/* ======================================================================== */ - -/* ata task image */ -extern u32 bcom_ata_task[]; - -/* ata task vars that need to be set before enabling the task */ -struct bcom_ata_var { - u32 enable; /* (u16*) address of task's control register */ - u32 bd_base; /* (struct bcom_bd*) beginning of ring buffer */ - u32 bd_last; /* (struct bcom_bd*) end of ring buffer */ - u32 bd_start; /* (struct bcom_bd*) current bd */ - u32 buffer_size; /* size of receive buffer */ -}; - -/* ata task incs that need to be set before enabling the task */ -struct bcom_ata_inc { - u16 pad0; - s16 incr_bytes; - u16 pad1; - s16 incr_dst; - u16 pad2; - s16 incr_src; -}; - - -/* ======================================================================== */ -/* Task support code */ -/* ======================================================================== */ - -struct bcom_task * -bcom_ata_init(int queue_len, int maxbufsize) -{ - struct bcom_task *tsk; - struct bcom_ata_var *var; - struct bcom_ata_inc *inc; - - /* Prefetch breaks ATA DMA. Turn it off for ATA DMA */ - bcom_disable_prefetch(); - - tsk = bcom_task_alloc(queue_len, sizeof(struct bcom_ata_bd), 0); - if (!tsk) - return NULL; - - tsk->flags = BCOM_FLAGS_NONE; - - bcom_ata_reset_bd(tsk); - - var = (struct bcom_ata_var *) bcom_task_var(tsk->tasknum); - inc = (struct bcom_ata_inc *) bcom_task_inc(tsk->tasknum); - - if (bcom_load_image(tsk->tasknum, bcom_ata_task)) { - bcom_task_free(tsk); - return NULL; - } - - var->enable = bcom_eng->regs_base + - offsetof(struct mpc52xx_sdma, tcr[tsk->tasknum]); - var->bd_base = tsk->bd_pa; - var->bd_last = tsk->bd_pa + ((tsk->num_bd-1) * tsk->bd_size); - var->bd_start = tsk->bd_pa; - var->buffer_size = maxbufsize; - - /* Configure some stuff */ - bcom_set_task_pragma(tsk->tasknum, BCOM_ATA_PRAGMA); - bcom_set_task_auto_start(tsk->tasknum, tsk->tasknum); - - out_8(&bcom_eng->regs->ipr[BCOM_INITIATOR_ATA_RX], BCOM_IPR_ATA_RX); - out_8(&bcom_eng->regs->ipr[BCOM_INITIATOR_ATA_TX], BCOM_IPR_ATA_TX); - - out_be32(&bcom_eng->regs->IntPend, 1<<tsk->tasknum); /* Clear ints */ - - return tsk; -} -EXPORT_SYMBOL_GPL(bcom_ata_init); - -void bcom_ata_rx_prepare(struct bcom_task *tsk) -{ - struct bcom_ata_inc *inc; - - inc = (struct bcom_ata_inc *) bcom_task_inc(tsk->tasknum); - - inc->incr_bytes = -(s16)sizeof(u32); - inc->incr_src = 0; - inc->incr_dst = sizeof(u32); - - bcom_set_initiator(tsk->tasknum, BCOM_INITIATOR_ATA_RX); -} -EXPORT_SYMBOL_GPL(bcom_ata_rx_prepare); - -void bcom_ata_tx_prepare(struct bcom_task *tsk) -{ - struct bcom_ata_inc *inc; - - inc = (struct bcom_ata_inc *) bcom_task_inc(tsk->tasknum); - - inc->incr_bytes = -(s16)sizeof(u32); - inc->incr_src = sizeof(u32); - inc->incr_dst = 0; - - bcom_set_initiator(tsk->tasknum, BCOM_INITIATOR_ATA_TX); -} -EXPORT_SYMBOL_GPL(bcom_ata_tx_prepare); - -void bcom_ata_reset_bd(struct bcom_task *tsk) -{ - struct bcom_ata_var *var; - - /* Reset all BD */ - memset(tsk->bd, 0x00, tsk->num_bd * tsk->bd_size); - - tsk->index = 0; - tsk->outdex = 0; - - var = (struct bcom_ata_var *) bcom_task_var(tsk->tasknum); - var->bd_start = var->bd_base; -} -EXPORT_SYMBOL_GPL(bcom_ata_reset_bd); - -void bcom_ata_release(struct bcom_task *tsk) -{ - /* Nothing special for the ATA tasks */ - bcom_task_free(tsk); -} -EXPORT_SYMBOL_GPL(bcom_ata_release); - - -MODULE_DESCRIPTION("BestComm ATA task driver"); -MODULE_AUTHOR("John Rigby"); -MODULE_LICENSE("GPL v2"); - |