| Message ID | 20250321101710.371480-4-18255117159@163.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Introduce generic capability search functions | expand |
On Fri, Mar 21, 2025 at 06:17:09PM +0800, Hans Zhang wrote: > Add configuration space capability search API using struct cdns_pcie* > pointer. > Please reuse the subject and description I provided in previous patch. - Mani
On 2025/3/21 21:06, Manivannan Sadhasivam wrote: > On Fri, Mar 21, 2025 at 06:17:09PM +0800, Hans Zhang wrote: >> Add configuration space capability search API using struct cdns_pcie* >> pointer. >> > > Please reuse the subject and description I provided in previous patch. > Hi Mani, Thanks your for reply. Will change. Best regards, Hans
diff --git a/drivers/pci/controller/cadence/pcie-cadence.c b/drivers/pci/controller/cadence/pcie-cadence.c index 204e045aed8c..ea9bfbe76cd6 100644 --- a/drivers/pci/controller/cadence/pcie-cadence.c +++ b/drivers/pci/controller/cadence/pcie-cadence.c @@ -8,6 +8,31 @@ #include "pcie-cadence.h" +static u32 cdns_pcie_read_cfg(void *priv, int where, int size) +{ + struct cdns_pcie *pcie = priv; + u32 val; + + if (size == 4) + val = readl(pcie->reg_base + where); + else if (size == 2) + val = readw(pcie->reg_base + where); + else if (size == 1) + val = readb(pcie->reg_base + where); + + return val; +} + +u8 cdns_pcie_find_capability(struct cdns_pcie *pcie, u8 cap) +{ + return pci_generic_find_capability(pcie, cdns_pcie_read_cfg, cap); +} + +u16 cdns_pcie_find_ext_capability(struct cdns_pcie *pcie, u8 cap) +{ + return pci_generic_find_ext_capability(pcie, cdns_pcie_read_cfg, cap); +} + void cdns_pcie_detect_quiet_min_delay_set(struct cdns_pcie *pcie) { u32 delay = 0x3; diff --git a/drivers/pci/controller/cadence/pcie-cadence.h b/drivers/pci/controller/cadence/pcie-cadence.h index f5eeff834ec1..6f4981fccb94 100644 --- a/drivers/pci/controller/cadence/pcie-cadence.h +++ b/drivers/pci/controller/cadence/pcie-cadence.h @@ -557,6 +557,9 @@ static inline int cdns_pcie_ep_setup(struct cdns_pcie_ep *ep) } #endif +u8 cdns_pcie_find_capability(struct cdns_pcie *pcie, u8 cap); +u16 cdns_pcie_find_ext_capability(struct cdns_pcie *pcie, u8 cap); + void cdns_pcie_detect_quiet_min_delay_set(struct cdns_pcie *pcie); void cdns_pcie_set_outbound_region(struct cdns_pcie *pcie, u8 busnr, u8 fn,
Add configuration space capability search API using struct cdns_pcie* pointer. Signed-off-by: Hans Zhang <18255117159@163.com> --- Changes since v2~v3: https://lore.kernel.org/linux-pci/20250308133903.322216-1-18255117159@163.com/ https://lore.kernel.org/linux-pci/20250321040358.360755-4-18255117159@163.com/ - Introduce generic capability search functions Changes since v1: https://lore.kernel.org/linux-pci/20250123070935.1810110-1-18255117159@163.com - Added calling the new API in PCI-Cadence ep.c. - Add a commit message reason for adding the API. --- drivers/pci/controller/cadence/pcie-cadence.c | 25 +++++++++++++++++++ drivers/pci/controller/cadence/pcie-cadence.h | 3 +++ 2 files changed, 28 insertions(+)