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-rw-r--r--arch/powerpc/sysdev/bestcomm/gen_bd.c354
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");
-
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.