From 6778948f9de86c3cfaf36725a7c87dcff9ba247f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 08:20:59 +0000
Subject: [PATCH] kernel_5.10 no rt
---
kernel/arch/arm/mach-rpc/ecard.c | 47 ++++++++++++++++++++++++++++++++---------------
1 files changed, 32 insertions(+), 15 deletions(-)
diff --git a/kernel/arch/arm/mach-rpc/ecard.c b/kernel/arch/arm/mach-rpc/ecard.c
index 04b2f22..827b50f 100644
--- a/kernel/arch/arm/mach-rpc/ecard.c
+++ b/kernel/arch/arm/mach-rpc/ecard.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/arch/arm/kernel/ecard.c
*
* Copyright 1995-2001 Russell King
- *
- * 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.
*
* Find all installed expansion cards, and handle interrupts from them.
*
@@ -66,21 +63,25 @@
struct completion *complete;
};
-struct expcard_blacklist {
+struct expcard_quirklist {
unsigned short manufacturer;
unsigned short product;
const char *type;
+ void (*init)(ecard_t *ec);
};
static ecard_t *cards;
static ecard_t *slot_to_expcard[MAX_ECARDS];
static unsigned int ectcr;
+static void atomwide_3p_quirk(ecard_t *ec);
+
/* List of descriptions of cards which don't have an extended
* identification, or chunk directories containing a description.
*/
-static struct expcard_blacklist __initdata blacklist[] = {
- { MANU_ACORN, PROD_ACORN_ETHER1, "Acorn Ether1" }
+static struct expcard_quirklist quirklist[] __initdata = {
+ { MANU_ACORN, PROD_ACORN_ETHER1, "Acorn Ether1" },
+ { MANU_ATOMWIDE, PROD_ATOMWIDE_3PSERIAL, NULL, atomwide_3p_quirk },
};
asmlinkage extern int
@@ -496,18 +497,21 @@
printk("Expansion card IRQ state:\n");
for (ec = cards; ec; ec = ec->next) {
+ const char *claimed;
+
if (ec->slot_no == 8)
continue;
- printk(" %d: %sclaimed, ",
- ec->slot_no, ec->claimed ? "" : "not ");
+ claimed = ec->claimed ? "" : "not ";
if (ec->ops && ec->ops->irqpending &&
ec->ops != &ecard_default_ops)
- printk("irq %spending\n",
+ printk(" %d: %sclaimed irq %spending\n",
+ ec->slot_no, claimed,
ec->ops->irqpending(ec) ? "" : "not ");
else
- printk("irqaddr %p, mask = %02X, status = %02X\n",
+ printk(" %d: %sclaimed irqaddr %p, mask = %02X, status = %02X\n",
+ ec->slot_no, claimed,
ec->irqaddr, ec->irqmask, readb(ec->irqaddr));
}
}
@@ -868,6 +872,16 @@
}
EXPORT_SYMBOL(ecardm_iomap);
+static void atomwide_3p_quirk(ecard_t *ec)
+{
+ void __iomem *addr = __ecard_address(ec, ECARD_IOC, ECARD_SYNC);
+ unsigned int i;
+
+ /* Disable interrupts on each port */
+ for (i = 0x2000; i <= 0x2800; i += 0x0400)
+ writeb(0, addr + i + 4);
+}
+
/*
* Probe for an expansion card.
*
@@ -921,10 +935,13 @@
ec->fiqmask = 4;
}
- for (i = 0; i < ARRAY_SIZE(blacklist); i++)
- if (blacklist[i].manufacturer == ec->cid.manufacturer &&
- blacklist[i].product == ec->cid.product) {
- ec->card_desc = blacklist[i].type;
+ for (i = 0; i < ARRAY_SIZE(quirklist); i++)
+ if (quirklist[i].manufacturer == ec->cid.manufacturer &&
+ quirklist[i].product == ec->cid.product) {
+ if (quirklist[i].type)
+ ec->card_desc = quirklist[i].type;
+ if (quirklist[i].init)
+ quirklist[i].init(ec);
break;
}
--
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