diff options
| author | Li Yang <leoli@freescale.com> | 2010-04-22 12:31:37 +0400 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2010-05-25 06:26:34 +0400 |
| commit | 061ca4adfb2e3c986a182fd30f7e939a1ff8d29d (patch) | |
| tree | 038402d2fb9f6f0d919c1fc6d5556d252a4f629d /arch/powerpc/sysdev/fsl_msi.c | |
| parent | 694a7a3611a1c0e28d99b4955151c6ce68e89752 (diff) | |
| download | linux-061ca4adfb2e3c986a182fd30f7e939a1ff8d29d.tar.xz | |
powerpc/fsl_msi: enable msi sharing through AMP OSes
Make a single PCIe MSI bank shareable through CAMP OSes. The number of
MSI used by each core can be configured by dts file.
Signed-off-by: Zhao Chenhui <b26998@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/sysdev/fsl_msi.c')
| -rw-r--r-- | arch/powerpc/sysdev/fsl_msi.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c index efffcbd190a1..1ab703915972 100644 --- a/arch/powerpc/sysdev/fsl_msi.c +++ b/arch/powerpc/sysdev/fsl_msi.c @@ -261,6 +261,8 @@ static int __devinit fsl_of_msi_probe(struct of_device *dev, const u32 *p; struct fsl_msi_feature *features = match->data; struct fsl_msi_cascade_data *cascade_data = NULL; + int len; + u32 offset; printk(KERN_DEBUG "Setting up Freescale MSI support\n"); @@ -320,6 +322,10 @@ static int __devinit fsl_of_msi_probe(struct of_device *dev, err = -EINVAL; goto error_out; } + offset = 0; + p = of_get_property(dev->node, "msi-available-ranges", &len); + if (p) + offset = *p / IRQS_PER_MSI_REG; count /= sizeof(u32); for (i = 0; i < count / 2; i++) { @@ -336,7 +342,7 @@ static int __devinit fsl_of_msi_probe(struct of_device *dev, err = -ENOMEM; goto error_out; } - cascade_data->index = i; + cascade_data->index = i + offset; cascade_data->msi_data = msi; set_irq_data(virt_msir, (void *)cascade_data); set_irq_chained_handler(virt_msir, fsl_msi_cascade); |