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[PATCH] I2O: new sysfs attributes and Adaptec specific block device access and 64-bit DMA support

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Changes:
 - Added Bus-OSM which could be used by user space programs to reset a
   channel on the controller
 - Make ioctl's in Config-OSM obsolete in prefer for sysfs attributes and
   move those to its own file
 - Added sysfs attribute for firmware read and write access for I2O
   controllers
 - Added special handling of firmware read and write access for Adaptec
   controllers
 - Added vendor id and product id as sysfs-attribute to Executive classes
 - Added automatic notification of LCT change handling to Exec-OSM
 - Added flushing function to Block-OSM for later barrier implementation
 - Use PRIVATE messages for Block access on Adaptec controllers, which are
   faster then BLOCK class access
 - Cleaned up support for Promise controller
 - New messages are now detected using the IRQ status register as
   suggested by the I2O spec
 - Added i2o_dma_high() and i2o_dma_low() functions
 - Added facility for SG tablesize calculation when using 32-bit and
   64-bit DMA addresses
 - Added i2o_dma_map_single() and i2o_dma_map_sg() which could build the
   SG list for 32-bit as well as 64-bit DMA addresses

Signed-off-by: Markus Lidel <Markus.Lidel@shadowconnect.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Markus Lidel
2005-06-23 22:02:16 -07:00
committed by Linus Torvalds
parent f88e119c4b
commit f10378fff6
15 changed files with 1473 additions and 559 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
drivers/message/i2o/pci.c
View File

@@ -49,30 +49,6 @@ static struct pci_device_id __devinitdata i2o_pci_ids[] = {
{0}
};
/**
* i2o_dma_realloc - Realloc DMA memory
* @dev: struct device pointer to the PCI device of the I2O controller
* @addr: pointer to a i2o_dma struct DMA buffer
* @len: new length of memory
* @gfp_mask: GFP mask
*
* If there was something allocated in the addr, free it first. If len > 0
* than try to allocate it and write the addresses back to the addr
* structure. If len == 0 set the virtual address to NULL.
*
* Returns the 0 on success or negative error code on failure.
*/
int i2o_dma_realloc(struct device *dev, struct i2o_dma *addr, size_t len,
unsigned int gfp_mask)
{
i2o_dma_free(dev, addr);
if (len)
return i2o_dma_alloc(dev, addr, len, gfp_mask);
return 0;
};
/**
* i2o_pci_free - Frees the DMA memory for the I2O controller
* @c: I2O controller to free
@@ -185,6 +161,7 @@ static int __devinit i2o_pci_alloc(struct i2o_controller *c)
} else
c->in_queue = c->base;
c->irq_status = c->base.virt + I2O_IRQ_STATUS;
c->irq_mask = c->base.virt + I2O_IRQ_MASK;
c->in_port = c->base.virt + I2O_IN_PORT;
c->out_port = c->base.virt + I2O_OUT_PORT;
@@ -232,36 +209,30 @@ static int __devinit i2o_pci_alloc(struct i2o_controller *c)
static irqreturn_t i2o_pci_interrupt(int irq, void *dev_id, struct pt_regs *r)
{
struct i2o_controller *c = dev_id;
struct device *dev = &c->pdev->dev;
u32 mv = readl(c->out_port);
u32 m;
irqreturn_t rc = IRQ_NONE;
/*
* Old 960 steppings had a bug in the I2O unit that caused
* the queue to appear empty when it wasn't.
*/
if (mv == I2O_QUEUE_EMPTY) {
mv = readl(c->out_port);
if (unlikely(mv == I2O_QUEUE_EMPTY))
return IRQ_NONE;
else
pr_debug("%s: 960 bug detected\n", c->name);
}
while (readl(c->irq_status) & I2O_IRQ_OUTBOUND_POST) {
m = readl(c->out_port);
if (m == I2O_QUEUE_EMPTY) {
/*
* Old 960 steppings had a bug in the I2O unit that
* caused the queue to appear empty when it wasn't.
*/
m = readl(c->out_port);
if (unlikely(m == I2O_QUEUE_EMPTY))
break;
}
while (mv != I2O_QUEUE_EMPTY) {
/* dispatch it */
if (i2o_driver_dispatch(c, mv))
if (i2o_driver_dispatch(c, m))
/* flush it if result != 0 */
i2o_flush_reply(c, mv);
i2o_flush_reply(c, m);
/*
* That 960 bug again...
*/
mv = readl(c->out_port);
if (mv == I2O_QUEUE_EMPTY)
mv = readl(c->out_port);
rc = IRQ_HANDLED;
}
return IRQ_HANDLED;
return rc;
}
/**