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vme: include address space in error filtering

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Also changes vme_bus_error_handler to take generic address modifier code
instead of raw contents of a device-specific attribute register.

Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Cc: Igor Alekseev <igor.alekseev@itep.ru>
Acked-by: Martyn Welch <martyn@welchs.me.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dmitry Kalinkin 2015-09-18 02:01:43 +03:00 committed by Greg Kroah-Hartman
parent e2c6393fda
commit 472f16f33c
3 changed files with 46 additions and 23 deletions
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4
drivers/vme/bridges/vme_tsi148.c
View File

@ -169,6 +169,7 @@ static u32 tsi148_VERR_irqhandler(struct vme_bridge *tsi148_bridge)
unsigned int error_addr_high, error_addr_low;
unsigned long long error_addr;
u32 error_attrib;
int error_am;
struct tsi148_driver *bridge;
bridge = tsi148_bridge->driver_priv;
@ -176,6 +177,7 @@ static u32 tsi148_VERR_irqhandler(struct vme_bridge *tsi148_bridge)
error_addr_high = ioread32be(bridge->base + TSI148_LCSR_VEAU);
error_addr_low = ioread32be(bridge->base + TSI148_LCSR_VEAL);
error_attrib = ioread32be(bridge->base + TSI148_LCSR_VEAT);
error_am = (error_attrib & TSI148_LCSR_VEAT_AM_M) >> 8;
reg_join(error_addr_high, error_addr_low, &error_addr);
@ -186,7 +188,7 @@ static u32 tsi148_VERR_irqhandler(struct vme_bridge *tsi148_bridge)
}
if (err_chk)
vme_bus_error_handler(tsi148_bridge, error_addr, error_attrib);
vme_bus_error_handler(tsi148_bridge, error_addr, error_am);
else
dev_err(tsi148_bridge->parent,
"VME Bus Error at address: 0x%llx, attributes: %08x\n",

61
drivers/vme/vme.c
View File

@ -223,6 +223,39 @@ int vme_check_window(u32 aspace, unsigned long long vme_base,
}
EXPORT_SYMBOL(vme_check_window);
static u32 vme_get_aspace(int am)
{
switch (am) {
case 0x29:
case 0x2D:
return VME_A16;
case 0x38:
case 0x39:
case 0x3A:
case 0x3B:
case 0x3C:
case 0x3D:
case 0x3E:
case 0x3F:
return VME_A24;
case 0x8:
case 0x9:
case 0xA:
case 0xB:
case 0xC:
case 0xD:
case 0xE:
case 0xF:
return VME_A32;
case 0x0:
case 0x1:
case 0x3:
return VME_A64;
}
return 0;
}
/*
* Request a slave image with specific attributes, return some unique
* identifier.
@ -991,14 +1024,14 @@ int vme_dma_free(struct vme_resource *resource)
EXPORT_SYMBOL(vme_dma_free);
void vme_bus_error_handler(struct vme_bridge *bridge,
unsigned long long address, u32 attributes)
unsigned long long address, int am)
{
struct vme_bus_error *error;
error = kmalloc(sizeof(struct vme_bus_error), GFP_ATOMIC);
if (error) {
error->aspace = vme_get_aspace(am);
error->address = address;
error->attributes = attributes;
list_add_tail(&error->list, &bridge->vme_errors);
} else {
dev_err(bridge->parent,
@ -1019,19 +1052,13 @@ struct vme_bus_error *vme_find_error(struct vme_bridge *bridge, u32 aspace,
bound = address + count;
/*
* XXX We are currently not looking at the address space when parsing
* for errors. This is because parsing the Address Modifier Codes
* is going to be quite resource intensive to do properly. We
* should be OK just looking at the addresses and this is certainly
* much better than what we had before.
*/
err_pos = NULL;
/* Iterate through errors */
list_for_each(err_pos, &bridge->vme_errors) {
vme_err = list_entry(err_pos, struct vme_bus_error, list);
if ((vme_err->address >= address) &&
(vme_err->address < bound)) {
if ((vme_err->aspace == aspace) &&
(vme_err->address >= address) &&
(vme_err->address < bound)) {
valid = vme_err;
break;
@ -1054,20 +1081,14 @@ void vme_clear_errors(struct vme_bridge *bridge, u32 aspace,
bound = address + count;
/*
* XXX We are currently not looking at the address space when parsing
* for errors. This is because parsing the Address Modifier Codes
* is going to be quite resource intensive to do properly. We
* should be OK just looking at the addresses and this is certainly
* much better than what we had before.
*/
err_pos = NULL;
/* Iterate through errors */
list_for_each_safe(err_pos, temp, &bridge->vme_errors) {
vme_err = list_entry(err_pos, struct vme_bus_error, list);
if ((vme_err->address >= address) &&
(vme_err->address < bound)) {
if ((vme_err->aspace == aspace) &&
(vme_err->address >= address) &&
(vme_err->address < bound)) {
list_del(err_pos);
kfree(vme_err);

4
drivers/vme/vme_bridge.h
View File

@ -77,8 +77,8 @@ struct vme_lm_resource {
struct vme_bus_error {
struct list_head list;
u32 aspace;
unsigned long long address;
u32 attributes;
};
struct vme_callback {
@ -167,7 +167,7 @@ struct vme_bridge {
};
void vme_bus_error_handler(struct vme_bridge *bridge,
unsigned long long address, u32 attributes);
unsigned long long address, int am);
struct vme_bus_error *vme_find_error(struct vme_bridge *bridge, u32 aspace,
unsigned long long address, size_t count);
void vme_clear_errors(struct vme_bridge *bridge, u32 aspace,