Commit 061ca4ad authored by Li Yang's avatar Li Yang Committed by Kumar Gala
Browse files

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: default avatarZhao Chenhui <b26998@freescale.com>
Signed-off-by: default avatarLi Yang <leoli@freescale.com>
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent 694a7a36
......@@ -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);
......
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