From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Subject: [PATCH] ide: allow host drivers to specify IRQ flags
* Add ->irq_flags field to struct ide_port_info and struct ide_host.
* Update host drivers and IDE PCI code to use ->irq_flags field.
* Convert init_irq() and ide_intr() to use host->irq_flags.
This fixes handling of shared IRQs for non-PCI hosts
and removes ugly ifdeffery from core IDE code.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
drivers/ide/buddha.c | 1 +
drivers/ide/delkin_cb.c | 1 +
drivers/ide/falconide.c | 1 +
drivers/ide/gayle.c | 1 +
drivers/ide/ide-cs.c | 1 +
drivers/ide/ide-io.c | 15 ++++-----------
drivers/ide/ide-probe.c | 9 +--------
drivers/ide/macide.c | 1 +
drivers/ide/q40ide.c | 1 +
drivers/ide/scc_pata.c | 1 +
drivers/ide/setup-pci.c | 4 ++++
drivers/ide/sgiioc4.c | 1 +
include/linux/ide.h | 6 ++++++
13 files changed, 24 insertions(+), 19 deletions(-)
Index: b/drivers/ide/buddha.c
===================================================================
--- a/drivers/ide/buddha.c
+++ b/drivers/ide/buddha.c
@@ -145,6 +145,7 @@ static void __init buddha_setup_ports(hw
static const struct ide_port_info buddha_port_info = {
.host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
+ .irq_flags = IRQF_SHARED,
};
/*
Index: b/drivers/ide/delkin_cb.c
===================================================================
--- a/drivers/ide/delkin_cb.c
+++ b/drivers/ide/delkin_cb.c
@@ -66,6 +66,7 @@ static const struct ide_port_info delkin
.port_ops = &delkin_cb_port_ops,
.host_flags = IDE_HFLAG_IO_32BIT | IDE_HFLAG_UNMASK_IRQS |
IDE_HFLAG_NO_DMA,
+ .irq_flags = IRQF_SHARED,
.init_chipset = delkin_cb_init_chipset,
};
Index: b/drivers/ide/falconide.c
===================================================================
--- a/drivers/ide/falconide.c
+++ b/drivers/ide/falconide.c
@@ -105,6 +105,7 @@ static const struct ide_port_info falcon
.tp_ops = &falconide_tp_ops,
.host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_SERIALIZE |
IDE_HFLAG_NO_DMA,
+ .irq_flags = IRQF_SHARED,
};
static void __init falconide_setup_ports(hw_regs_t *hw)
Index: b/drivers/ide/gayle.c
===================================================================
--- a/drivers/ide/gayle.c
+++ b/drivers/ide/gayle.c
@@ -120,6 +120,7 @@ static void __init gayle_setup_ports(hw_
static const struct ide_port_info gayle_port_info = {
.host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_SERIALIZE |
IDE_HFLAG_NO_DMA,
+ .irq_flags = IRQF_SHARED,
};
/*
Index: b/drivers/ide/ide-cs.c
===================================================================
--- a/drivers/ide/ide-cs.c
+++ b/drivers/ide/ide-cs.c
@@ -154,6 +154,7 @@ static const struct ide_port_ops idecs_p
static const struct ide_port_info idecs_port_info = {
.port_ops = &idecs_port_ops,
.host_flags = IDE_HFLAG_NO_DMA,
+ .irq_flags = IRQF_SHARED,
};
static struct ide_host *idecs_register(unsigned long io, unsigned long ctl,
Index: b/drivers/ide/ide-io.c
===================================================================
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -841,6 +841,7 @@ static void unexpected_intr(int irq, ide
irqreturn_t ide_intr (int irq, void *dev_id)
{
ide_hwif_t *hwif = (ide_hwif_t *)dev_id;
+ struct ide_host *host = hwif->host;
ide_drive_t *uninitialized_var(drive);
ide_handler_t *handler;
unsigned long flags;
@@ -848,8 +849,8 @@ irqreturn_t ide_intr (int irq, void *dev
irqreturn_t irq_ret = IRQ_NONE;
int plug_device = 0;
- if (hwif->host->host_flags & IDE_HFLAG_SERIALIZE) {
- if (hwif != hwif->host->cur_port)
+ if (host->host_flags & IDE_HFLAG_SERIALIZE) {
+ if (hwif != host->cur_port)
goto out_early;
}
@@ -872,27 +873,19 @@ irqreturn_t ide_intr (int irq, void *dev
*
* For PCI, we cannot tell the difference,
* so in that case we just ignore it and hope it goes away.
- *
- * FIXME: unexpected_intr should be hwif-> then we can
- * remove all the ifdef PCI crap
*/
-#ifdef CONFIG_BLK_DEV_IDEPCI
- if (hwif->chipset != ide_pci)
-#endif /* CONFIG_BLK_DEV_IDEPCI */
- {
+ if ((host->irq_flags & IRQF_SHARED) == 0) {
/*
* Probably not a shared PCI interrupt,
* so we can safely try to do something about it:
*/
unexpected_intr(irq, hwif);
-#ifdef CONFIG_BLK_DEV_IDEPCI
} else {
/*
* Whack the status register, just in case
* we have a leftover pending IRQ.
*/
(void)hwif->tp_ops->read_status(hwif);
-#endif /* CONFIG_BLK_DEV_IDEPCI */
}
goto out;
}
Index: b/drivers/ide/ide-probe.c
===================================================================
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -837,14 +837,7 @@ static int ide_port_setup_devices(ide_hw
static int init_irq (ide_hwif_t *hwif)
{
struct ide_io_ports *io_ports = &hwif->io_ports;
- int sa = 0;
-
-#if defined(__mc68000__)
- sa = IRQF_SHARED;
-#endif /* __mc68000__ */
-
- if (hwif->chipset == ide_pci)
- sa = IRQF_SHARED;
+ int sa = hwif->host->irq_flags;
if (io_ports->ctl_addr)
hwif->tp_ops->set_irq(hwif, 1);
Index: b/drivers/ide/macide.c
===================================================================
--- a/drivers/ide/macide.c
+++ b/drivers/ide/macide.c
@@ -82,6 +82,7 @@ static void __init macide_setup_ports(hw
static const struct ide_port_info macide_port_info = {
.host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
+ .irq_flags = IRQF_SHARED,
};
static const char *mac_ide_name[] =
Index: b/drivers/ide/q40ide.c
===================================================================
--- a/drivers/ide/q40ide.c
+++ b/drivers/ide/q40ide.c
@@ -112,6 +112,7 @@ static const struct ide_tp_ops q40ide_tp
static const struct ide_port_info q40ide_port_info = {
.tp_ops = &q40ide_tp_ops,
.host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
+ .irq_flags = IRQF_SHARED,
};
/*
Index: b/drivers/ide/scc_pata.c
===================================================================
--- a/drivers/ide/scc_pata.c
+++ b/drivers/ide/scc_pata.c
@@ -891,6 +891,7 @@ static const struct ide_port_info scc_ch
.port_ops = &scc_port_ops,
.dma_ops = &scc_dma_ops,
.host_flags = IDE_HFLAG_SINGLE,
+ .irq_flags = IRQF_SHARED,
.pio_mask = ATA_PIO4,
};
Index: b/drivers/ide/setup-pci.c
===================================================================
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -558,6 +558,8 @@ int ide_pci_init_one(struct pci_dev *dev
host->host_priv = priv;
+ host->irq_flags = IRQF_SHARED;
+
pci_set_drvdata(dev, host);
ret = do_ide_setup_pci_device(dev, d, 1);
@@ -606,6 +608,8 @@ int ide_pci_init_two(struct pci_dev *dev
host->host_priv = priv;
+ host->irq_flags = IRQF_SHARED;
+
pci_set_drvdata(pdev[0], host);
pci_set_drvdata(pdev[1], host);
Index: b/drivers/ide/sgiioc4.c
===================================================================
--- a/drivers/ide/sgiioc4.c
+++ b/drivers/ide/sgiioc4.c
@@ -557,6 +557,7 @@ static const struct ide_port_info sgiioc
.port_ops = &sgiioc4_port_ops,
.dma_ops = &sgiioc4_dma_ops,
.host_flags = IDE_HFLAG_MMIO,
+ .irq_flags = IRQF_SHARED,
.mwdma_mask = ATA_MWDMA2_ONLY,
};
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -836,6 +836,9 @@ struct ide_host {
void (*release_lock)(void);
unsigned long host_flags;
+
+ int irq_flags;
+
void *host_priv;
ide_hwif_t *cur_port; /* for hosts requiring serialization */
@@ -1368,6 +1371,9 @@ struct ide_port_info {
u16 max_sectors; /* if < than the default one */
u32 host_flags;
+
+ int irq_flags;
+
u8 pio_mask;
u8 swdma_mask;
u8 mwdma_mask;
--
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