On Mon, 2008-01-28 at 16:00 +0100, Rene Herman wrote:
> On 28-01-08 15:21, Thomas Renninger wrote:
>
> > I think I know what is going on.
> > While pnpbios and pnpacpi theoretically do not have limits, isapnp has
> > spec restrictions (AFAIK, I have not read this up, but taken over from
> > previous implementation...).
> > Therefore in isapnp I wanted to stay with:
> > #define PNP_MAX_PORT 8
> > #define PNP_MAX_MEM 4
> > #define PNP_MAX_IRQ 2
> > #define PNP_MAX_DMA 2
> > but I have forgotten to malloc one portion for each at init time, or
> > even better one portion as soon as one is needed.
>
> Yup.
>
> > As said, isapnp is more or less untested, thanks a lot for trying out.
> > I will send an updated version soon.
>
> I"m not sure of the flow of things by the way but if it makes better/nicer
> code to just pretend that ISAPnP is also unlimited then I'd say to simply do
> so. ISAPnP is getting obsolete anyway, not anything to optimise for...
Also go the dynamic way in isapnp layer
Signed-off-by: Thomas Renninger <trenn@xxxxxxx>
---
drivers/pnp/isapnp/core.c | 25 +++++++++++++++++--------
1 file changed, 17 insertions(+), 8 deletions(-)
Index: linux-2.6.23/drivers/pnp/isapnp/core.c
===================================================================
--- linux-2.6.23.orig/drivers/pnp/isapnp/core.c
+++ linux-2.6.23/drivers/pnp/isapnp/core.c
@@ -953,7 +953,7 @@ static int isapnp_read_resources(struct
dev->active = isapnp_read_byte(ISAPNP_CFG_ACTIVATE);
if (dev->active) {
- for (tmp = 0; tmp < PNP_MAX_PORT; tmp++) {
+ for (tmp = 0; pnp_port_ok(dev, tmp); tmp++) {
ret = isapnp_read_word(ISAPNP_CFG_PORT + (tmp << 1));
if (!ret)
continue;
@@ -961,8 +961,10 @@ static int isapnp_read_resources(struct
new_res.flags = IORESOURCE_IO;
if (pnp_assign_resource(res, &new_res))
pnp_err("Bug in %s", __FUNCTION__);
+ if (tmp > PNP_MAX_PORT)
+ pnp_warn("ISA exceeds spec max port");
}
- for (tmp = 0; tmp < PNP_MAX_MEM; tmp++) {
+ for (tmp = 0; pnp_mem_ok(dev, tmp); tmp++) {
ret =
isapnp_read_word(ISAPNP_CFG_MEM + (tmp << 3)) << 8;
if (!ret)
@@ -971,8 +973,10 @@ static int isapnp_read_resources(struct
new_res.flags = IORESOURCE_MEM;
if (pnp_assign_resource(res, &new_res))
pnp_err("Bug in %s", __FUNCTION__);
+ if (tmp > PNP_MAX_MEM)
+ pnp_warn("ISA exceeds spec max mem");
}
- for (tmp = 0; tmp < PNP_MAX_IRQ; tmp++) {
+ for (tmp = 0; pnp_irq_ok(dev, tmp); tmp++) {
ret =
(isapnp_read_word(ISAPNP_CFG_IRQ + (tmp << 1)) >>
8);
@@ -982,8 +986,11 @@ static int isapnp_read_resources(struct
new_res.flags = IORESOURCE_IRQ;
if (pnp_assign_resource(res, &new_res))
pnp_err("Bug in %s", __FUNCTION__);
+ if (tmp > PNP_MAX_IRQ)
+ pnp_warn("ISA exceeds spec max irq");
+
}
- for (tmp = 0; tmp < PNP_MAX_DMA; tmp++) {
+ for (tmp = 0; pnp_dma_ok(dev, tmp); tmp++) {
ret = isapnp_read_byte(ISAPNP_CFG_DMA + tmp);
if (ret == 4)
continue;
@@ -992,6 +999,8 @@ static int isapnp_read_resources(struct
new_res.flags = IORESOURCE_DMA;
if (pnp_assign_resource(res, &new_res))
pnp_err("Bug in %s", __FUNCTION__);
+ if (tmp > PNP_MAX_DMA)
+ pnp_warn("ISA exceeds spec max dma");
}
}
return 0;
@@ -1017,14 +1026,14 @@ static int isapnp_set_resources(struct p
isapnp_cfg_begin(dev->card->number, dev->number);
dev->active = 1;
for (tmp = 0;
- tmp < PNP_MAX_PORT
+ pnp_port_ok(dev, tmp)
&& (res->port_resource[tmp].
flags & (IORESOURCE_IO | IORESOURCE_UNSET)) == IORESOURCE_IO;
tmp++)
isapnp_write_word(ISAPNP_CFG_PORT + (tmp << 1),
res->port_resource[tmp].start);
for (tmp = 0;
- tmp < PNP_MAX_IRQ
+ pnp_irq_ok(dev, tmp)
&& (res->irq_resource[tmp].
flags & (IORESOURCE_IRQ | IORESOURCE_UNSET)) == IORESOURCE_IRQ;
tmp++) {
@@ -1034,14 +1043,14 @@ static int isapnp_set_resources(struct p
isapnp_write_byte(ISAPNP_CFG_IRQ + (tmp << 1), irq);
}
for (tmp = 0;
- tmp < PNP_MAX_DMA
+ pnp_dma_ok(dev, tmp)
&& (res->dma_resource[tmp].
flags & (IORESOURCE_DMA | IORESOURCE_UNSET)) == IORESOURCE_DMA;
tmp++)
isapnp_write_byte(ISAPNP_CFG_DMA + tmp,
res->dma_resource[tmp].start);
for (tmp = 0;
- tmp < PNP_MAX_MEM
+ pnp_mem_ok(dev, tmp)
&& (res->mem_resource[tmp].
flags & (IORESOURCE_MEM | IORESOURCE_UNSET)) == IORESOURCE_MEM;
tmp++)
-
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
