misc: pci_endpoint_test: Add support for Rockchip rk3588

Rockchip rk3588 requires 64KB alignment for BARs.

While there is an existing device_id:vendor_id in the driver with 64KB
alignment, that device_id:vendor_id is am654, which uses BAR2 instead of
BAR0 as the test_reg_bar, and also has special is_am654_pci_dev() checks
in the driver to disallow BAR0. In order to allow testing all BARs, add a
new rk3588 entry in the driver.

We intentionally do not add the vendor id to pci_ids.h, since the policy
for that file is that the vendor id has to be used by multiple drivers.

Hopefully, this new entry will be short-lived, as there is a series on the
mailing list which intends to move the address alignment restrictions from
this driver to the endpoint side.

Add a new entry for rk3588 in order to allow us to test all BARs.

Link: https://lore.kernel.org/linux-pci/20240607-rockchip-pcie-ep-v1-v5-11-0a042d6b0049@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c
index c38a608..a7f593b 100644 (file)
--- a/drivers/misc/pci_endpoint_test.c
+++ b/drivers/misc/pci_endpoint_test.c
@@ -84,6 +84,9 @@
 #define PCI_DEVICE_ID_RENESAS_R8A774E1         0x0025
 #define PCI_DEVICE_ID_RENESAS_R8A779F0         0x0031
 
+#define PCI_VENDOR_ID_ROCKCHIP                 0x1d87
+#define PCI_DEVICE_ID_ROCKCHIP_RK3588          0x3588
+
 static DEFINE_IDA(pci_endpoint_test_ida);
 
 #define to_endpoint_test(priv) container_of((priv), struct pci_endpoint_test, \
@@ -980,6 +983,11 @@ static const struct pci_endpoint_test_data j721e_data = {
        .irq_type = IRQ_TYPE_MSI,
 };
 
+static const struct pci_endpoint_test_data rk3588_data = {
+       .alignment = SZ_64K,
+       .irq_type = IRQ_TYPE_MSI,
+};
+
 static const struct pci_device_id pci_endpoint_test_tbl[] = {
        { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA74x),
          .driver_data = (kernel_ulong_t)&default_data,
@@ -1017,6 +1025,9 @@ static const struct pci_device_id pci_endpoint_test_tbl[] = {
        { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_J721S2),
          .driver_data = (kernel_ulong_t)&j721e_data,
        },
+       { PCI_DEVICE(PCI_VENDOR_ID_ROCKCHIP, PCI_DEVICE_ID_ROCKCHIP_RK3588),
+         .driver_data = (kernel_ulong_t)&rk3588_data,
+       },
        { }
 };
 MODULE_DEVICE_TABLE(pci, pci_endpoint_test_tbl);