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PCI: apple: Dynamically allocate RID-to_SID bitmap

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As we move towards supporting SoCs with varying RID-to-SID mapping
capabilities, turn the static SID tracking bitmap into a dynamically
allocated one. The current allocation size is still the same, but
that's about to change.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Tested-by: Janne Grunau <j@jannau.net>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Link: https://patch.msgid.link/20250401091713.2765724-7-maz@kernel.org
This commit is contained in:
Marc Zyngier 2025-04-01 10:17:06 +01:00 committed by Manivannan Sadhasivam
parent 4785591f96
commit ed982862ce
1 changed files with 5 additions and 1 deletions
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6
drivers/pci/controller/pcie-apple.c
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@ -147,7 +147,7 @@ struct apple_pcie_port {
void __iomem *base;
struct irq_domain *domain;
struct list_head entry;
DECLARE_BITMAP(sid_map, MAX_RID2SID);
unsigned long *sid_map;
int sid_map_sz;
int idx;
};
@ -524,6 +524,10 @@ static int apple_pcie_setup_port(struct apple_pcie *pcie,
if (!port)
return -ENOMEM;
port->sid_map = devm_bitmap_zalloc(pcie->dev, MAX_RID2SID, GFP_KERNEL);
if (!port->sid_map)
return -ENOMEM;
ret = of_property_read_u32_index(np, "reg", 0, &idx);
if (ret)
return ret;