From: "Albrecht Dreß" <albrecht.dress@arcor.de>
To: grant.likely@secretlab.ca, linuxppc-dev@ozlabs.org
Subject: [PATCH] powerpc/5200: make BestComm gen_bd microcode exchangeable
Date: Thu, 01 Oct 2009 21:55:38 +0200 [thread overview]
Message-ID: <1254426938.3252.1@antares> (raw)
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This patch adds a method for defining different microcodes than the
pe-defined ones for the MPC52xx processor's BestComm General Buffer
Descriptor (gen_db) tasks. The default microcode is still the one from
bcom_gen_bd_[rt]x_task, but it can be replaced by calling
bcom_gen_bd_set_microcode() which is more efficient than explicitly
loading it via bcom_load_image() after each bcom_gen_bd_[rt]x_reset().
Signed-off-by: Albrecht Dreß <albrecht.dress@arcor.de>
---
diff -uprN -X linux-2.6.30.3/Documentation/dontdiff
linux-2.6.30.3.orig/arch/powerpc/sysdev/bestcomm/gen_bd.c
linux-2.6.30.3/arch/powerpc/sysdev/bestcomm/gen_bd.c
--- linux-2.6.30.3.orig/arch/powerpc/sysdev/bestcomm/gen_bd.c
2009-07-24 23:47:51.000000000 +0200
+++ linux-2.6.30.3/arch/powerpc/sysdev/bestcomm/gen_bd.c
2009-10-01 14:26:33.000000000 +0200
@@ -78,6 +78,7 @@ struct bcom_gen_bd_priv {
int initiator;
int ipr;
int maxbufsize;
+ u32 *microcode;
};
@@ -104,6 +105,7 @@ bcom_gen_bd_rx_init(int queue_len, phys_
priv->initiator = initiator;
priv->ipr = ipr;
priv->maxbufsize = maxbufsize;
+ priv->microcode = bcom_gen_bd_rx_task;
if (bcom_gen_bd_rx_reset(tsk)) {
bcom_task_free(tsk);
@@ -128,7 +130,7 @@ bcom_gen_bd_rx_reset(struct bcom_task *t
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))
+ if (bcom_load_image(tsk->tasknum, priv->microcode))
return -1;
var->enable = bcom_eng->regs_base +
@@ -188,6 +190,7 @@ bcom_gen_bd_tx_init(int queue_len, phys_
priv->fifo = fifo;
priv->initiator = initiator;
priv->ipr = ipr;
+ priv->microcode = bcom_gen_bd_tx_task;
if (bcom_gen_bd_tx_reset(tsk)) {
bcom_task_free(tsk);
@@ -212,7 +215,7 @@ bcom_gen_bd_tx_reset(struct bcom_task *t
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))
+ if (bcom_load_image(tsk->tasknum, priv->microcode))
return -1;
var->enable = bcom_eng->regs_base +
@@ -253,6 +256,16 @@ bcom_gen_bd_tx_release(struct bcom_task
}
EXPORT_SYMBOL_GPL(bcom_gen_bd_tx_release);
+void
+bcom_gen_bd_set_microcode(struct bcom_task *tsk, u32 *microcode)
+{
+ struct bcom_gen_bd_priv *priv = tsk->priv;
+
+ priv->microcode = microcode;
+}
+EXPORT_SYMBOL_GPL(bcom_gen_bd_set_microcode);
+
+
/*
---------------------------------------------------------------------
* PSC support code
*/
diff -uprN -X linux-2.6.30.3/Documentation/dontdiff
linux-2.6.30.3.orig/arch/powerpc/sysdev/bestcomm/gen_bd.h
linux-2.6.30.3/arch/powerpc/sysdev/bestcomm/gen_bd.h
--- linux-2.6.30.3.orig/arch/powerpc/sysdev/bestcomm/gen_bd.h
2009-07-24 23:47:51.000000000 +0200
+++ linux-2.6.30.3/arch/powerpc/sysdev/bestcomm/gen_bd.h
2009-10-01 14:26:50.000000000 +0200
@@ -43,6 +43,9 @@ bcom_gen_bd_tx_reset(struct bcom_task *t
extern void
bcom_gen_bd_tx_release(struct bcom_task *tsk);
+extern void
+bcom_gen_bd_set_microcode(struct bcom_task *tsk, u32 *microcode);
+
/* PSC support utility wrappers */
struct bcom_task * bcom_psc_gen_bd_rx_init(unsigned psc_num, int
queue_len,
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next reply other threads:[~2009-10-01 19:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-01 19:55 Albrecht Dreß [this message]
2009-10-03 9:44 ` [PATCH] powerpc/5200: make BestComm gen_bd microcode exchangeable Wolfram Sang
2009-10-03 13:50 ` Albrecht Dreß
2009-10-03 14:40 ` Wolfram Sang
2009-10-03 15:09 ` Albrecht Dreß
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