diff options
Diffstat (limited to 'arch/powerpc/sysdev/bestcomm/gen_bd.c')
| -rw-r--r-- | arch/powerpc/sysdev/bestcomm/gen_bd.c | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/arch/powerpc/sysdev/bestcomm/gen_bd.c b/arch/powerpc/sysdev/bestcomm/gen_bd.c deleted file mode 100644 index e0a53e3147b2..000000000000 --- a/arch/powerpc/sysdev/bestcomm/gen_bd.c +++ /dev/null @@ -1,354 +0,0 @@ -/* - * Driver for MPC52xx processor BestComm General Buffer Descriptor - * - * Copyright (C) 2007 Sylvain Munaut <tnt@246tNt.com> - * Copyright (C) 2006 AppSpec Computer Technologies Corp. - * Jeff Gibbons <jeff.gibbons@appspec.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/types.h> -#include <asm/errno.h> -#include <asm/io.h> - -#include <asm/mpc52xx.h> -#include <asm/mpc52xx_psc.h> - -#include "bestcomm.h" -#include "bestcomm_priv.h" -#include "gen_bd.h" - - -/* ======================================================================== */ -/* Task image/var/inc */ -/* ======================================================================== */ - -/* gen_bd tasks images */ -extern u32 bcom_gen_bd_rx_task[]; -extern u32 bcom_gen_bd_tx_task[]; - -/* rx task vars that need to be set before enabling the task */ -struct bcom_gen_bd_rx_var { - u32 enable; /* (u16*) address of task's control register */ - u32 fifo; /* (u32*) address of gen_bd's fifo */ - 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 */ -}; - -/* rx task incs that need to be set before enabling the task */ -struct bcom_gen_bd_rx_inc { - u16 pad0; - s16 incr_bytes; - u16 pad1; - s16 incr_dst; -}; - -/* tx task vars that need to be set before enabling the task */ -struct bcom_gen_bd_tx_var { - u32 fifo; /* (u32*) address of gen_bd's fifo */ - 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; /* set by uCode for each packet */ -}; - -/* tx task incs that need to be set before enabling the task */ -struct bcom_gen_bd_tx_inc { - u16 pad0; - s16 incr_bytes; - u16 pad1; - s16 incr_src; - u16 pad2; - s16 incr_src_ma; -}; - -/* private structure */ -struct bcom_gen_bd_priv { - phys_addr_t fifo; - int initiator; - int ipr; - int maxbufsize; -}; - - -/* ======================================================================== */ -/* Task support code */ -/* ======================================================================== */ - -struct bcom_task * -bcom_gen_bd_rx_init(int queue_len, phys_addr_t fifo, - int initiator, int ipr, int maxbufsize) -{ - struct bcom_task *tsk; - struct bcom_gen_bd_priv *priv; - - tsk = bcom_task_alloc(queue_len, sizeof(struct bcom_gen_bd), - sizeof(struct bcom_gen_bd_priv)); - if (!tsk) - return NULL; - - tsk->flags = BCOM_FLAGS_NONE; - - priv = tsk->priv; - priv->fifo = fifo; - priv->initiator = initiator; - priv->ipr = ipr; - priv->maxbufsize = maxbufsize; - - if (bcom_gen_bd_rx_reset(tsk)) { - bcom_task_free(tsk); - return NULL; - } - - return tsk; -} -EXPORT_SYMBOL_GPL(bcom_gen_bd_rx_init); - -int -bcom_gen_bd_rx_reset(struct bcom_task *tsk) -{ - struct bcom_gen_bd_priv *priv = tsk->priv; - struct bcom_gen_bd_rx_var *var; - struct bcom_gen_bd_rx_inc *inc; - - /* Shutdown the task */ - bcom_disable_task(tsk->tasknum); - - /* Reset the microcode */ - var = (struct bcom_gen_bd_rx_var *) bcom_task_var(tsk->tasknum); - inc = (struct bcom_gen_bd_rx_inc *) bcom_task_inc(tsk->tasknum); - - if (bcom_load_image(tsk->tasknum, bcom_gen_bd_rx_task)) - return -1; - - var->enable = bcom_eng->regs_base + - offsetof(struct mpc52xx_sdma, tcr[tsk->tasknum]); - var->fifo = (u32) priv->fifo; - 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 = priv->maxbufsize; - - inc->incr_bytes = -(s16)sizeof(u32); - inc->incr_dst = sizeof(u32); - - /* Reset the BDs */ - tsk->index = 0; - tsk->outdex = 0; - - memset(tsk->bd, 0x00, tsk->num_bd * tsk->bd_size); - - /* Configure some stuff */ - bcom_set_task_pragma(tsk->tasknum, BCOM_GEN_RX_BD_PRAGMA); - bcom_set_task_auto_start(tsk->tasknum, tsk->tasknum); - - out_8(&bcom_eng->regs->ipr[priv->initiator], priv->ipr); - bcom_set_initiator(tsk->tasknum, priv->initiator); - - out_be32(&bcom_eng->regs->IntPend, 1<<tsk->tasknum); /* Clear ints */ - - return 0; -} -EXPORT_SYMBOL_GPL(bcom_gen_bd_rx_reset); - -void -bcom_gen_bd_rx_release(struct bcom_task *tsk) -{ - /* Nothing special for the GenBD tasks */ - bcom_task_free(tsk); -} -EXPORT_SYMBOL_GPL(bcom_gen_bd_rx_release); - - -extern struct bcom_task * -bcom_gen_bd_tx_init(int queue_len, phys_addr_t fifo, - int initiator, int ipr) -{ - struct bcom_task *tsk; - struct bcom_gen_bd_priv *priv; - - tsk = bcom_task_alloc(queue_len, sizeof(struct bcom_gen_bd), - sizeof(struct bcom_gen_bd_priv)); - if (!tsk) - return NULL; - - tsk->flags = BCOM_FLAGS_NONE; - - priv = tsk->priv; - priv->fifo = fifo; - priv->initiator = initiator; - priv->ipr = ipr; - - if (bcom_gen_bd_tx_reset(tsk)) { - bcom_task_free(tsk); - return NULL; - } - - return tsk; -} -EXPORT_SYMBOL_GPL(bcom_gen_bd_tx_init); - -int -bcom_gen_bd_tx_reset(struct bcom_task *tsk) -{ - struct bcom_gen_bd_priv *priv = tsk->priv; - struct bcom_gen_bd_tx_var *var; - struct bcom_gen_bd_tx_inc *inc; - - /* Shutdown the task */ - bcom_disable_task(tsk->tasknum); - - /* Reset the microcode */ - var = (struct bcom_gen_bd_tx_var *) bcom_task_var(tsk->tasknum); - inc = (struct bcom_gen_bd_tx_inc *) bcom_task_inc(tsk->tasknum); - - if (bcom_load_image(tsk->tasknum, bcom_gen_bd_tx_task)) - return -1; - - var->enable = bcom_eng->regs_base + - offsetof(struct mpc52xx_sdma, tcr[tsk->tasknum]); - var->fifo = (u32) priv->fifo; - 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; - - inc->incr_bytes = -(s16)sizeof(u32); - inc->incr_src = sizeof(u32); - inc->incr_src_ma = sizeof(u8); - - /* Reset the BDs */ - tsk->index = 0; - tsk->outdex = 0; - - memset(tsk->bd, 0x00, tsk->num_bd * tsk->bd_size); - - /* Configure some stuff */ - bcom_set_task_pragma(tsk->tasknum, BCOM_GEN_TX_BD_PRAGMA); - bcom_set_task_auto_start(tsk->tasknum, tsk->tasknum); - - out_8(&bcom_eng->regs->ipr[priv->initiator], priv->ipr); - bcom_set_initiator(tsk->tasknum, priv->initiator); - - out_be32(&bcom_eng->regs->IntPend, 1<<tsk->tasknum); /* Clear ints */ - - return 0; -} -EXPORT_SYMBOL_GPL(bcom_gen_bd_tx_reset); - -void -bcom_gen_bd_tx_release(struct bcom_task *tsk) -{ - /* Nothing special for the GenBD tasks */ - bcom_task_free(tsk); -} -EXPORT_SYMBOL_GPL(bcom_gen_bd_tx_release); - -/* --------------------------------------------------------------------- - * PSC support code - */ - -/** - * bcom_psc_parameters - Bestcomm initialization value table for PSC devices - * - * This structure is only used internally. It is a lookup table for PSC - * specific parameters to bestcomm tasks. - */ -static struct bcom_psc_params { - int rx_initiator; - int rx_ipr; - int tx_initiator; - int tx_ipr; -} bcom_psc_params[] = { - [0] = { - .rx_initiator = BCOM_INITIATOR_PSC1_RX, - .rx_ipr = BCOM_IPR_PSC1_RX, - .tx_initiator = BCOM_INITIATOR_PSC1_TX, - .tx_ipr = BCOM_IPR_PSC1_TX, - }, - [1] = { - .rx_initiator = BCOM_INITIATOR_PSC2_RX, - .rx_ipr = BCOM_IPR_PSC2_RX, - .tx_initiator = BCOM_INITIATOR_PSC2_TX, - .tx_ipr = BCOM_IPR_PSC2_TX, - }, - [2] = { - .rx_initiator = BCOM_INITIATOR_PSC3_RX, - .rx_ipr = BCOM_IPR_PSC3_RX, - .tx_initiator = BCOM_INITIATOR_PSC3_TX, - .tx_ipr = BCOM_IPR_PSC3_TX, - }, - [3] = { - .rx_initiator = BCOM_INITIATOR_PSC4_RX, - .rx_ipr = BCOM_IPR_PSC4_RX, - .tx_initiator = BCOM_INITIATOR_PSC4_TX, - .tx_ipr = BCOM_IPR_PSC4_TX, - }, - [4] = { - .rx_initiator = BCOM_INITIATOR_PSC5_RX, - .rx_ipr = BCOM_IPR_PSC5_RX, - .tx_initiator = BCOM_INITIATOR_PSC5_TX, - .tx_ipr = BCOM_IPR_PSC5_TX, - }, - [5] = { - .rx_initiator = BCOM_INITIATOR_PSC6_RX, - .rx_ipr = BCOM_IPR_PSC6_RX, - .tx_initiator = BCOM_INITIATOR_PSC6_TX, - .tx_ipr = BCOM_IPR_PSC6_TX, - }, -}; - -/** - * bcom_psc_gen_bd_rx_init - Allocate a receive bcom_task for a PSC port - * @psc_num: Number of the PSC to allocate a task for - * @queue_len: number of buffer descriptors to allocate for the task - * @fifo: physical address of FIFO register - * @maxbufsize: Maximum receive data size in bytes. - * - * Allocate a bestcomm task structure for receiving data from a PSC. - */ -struct bcom_task * bcom_psc_gen_bd_rx_init(unsigned psc_num, int queue_len, - phys_addr_t fifo, int maxbufsize) -{ - if (psc_num >= MPC52xx_PSC_MAXNUM) - return NULL; - - return bcom_gen_bd_rx_init(queue_len, fifo, - bcom_psc_params[psc_num].rx_initiator, - bcom_psc_params[psc_num].rx_ipr, - maxbufsize); -} -EXPORT_SYMBOL_GPL(bcom_psc_gen_bd_rx_init); - -/** - * bcom_psc_gen_bd_tx_init - Allocate a transmit bcom_task for a PSC port - * @psc_num: Number of the PSC to allocate a task for - * @queue_len: number of buffer descriptors to allocate for the task - * @fifo: physical address of FIFO register - * - * Allocate a bestcomm task structure for transmitting data to a PSC. - */ -struct bcom_task * -bcom_psc_gen_bd_tx_init(unsigned psc_num, int queue_len, phys_addr_t fifo) -{ - struct psc; - return bcom_gen_bd_tx_init(queue_len, fifo, - bcom_psc_params[psc_num].tx_initiator, - bcom_psc_params[psc_num].tx_ipr); -} -EXPORT_SYMBOL_GPL(bcom_psc_gen_bd_tx_init); - - -MODULE_DESCRIPTION("BestComm General Buffer Descriptor tasks driver"); -MODULE_AUTHOR("Jeff Gibbons <jeff.gibbons@appspec.com>"); -MODULE_LICENSE("GPL v2"); - |