Hi,
On Monday 18 June 2018 08:30 PM, Gustavo Pimentel wrote:
> Cleanup PCI_ENDPOINT_TEST memspace (by moving the interrupt number away
> from command section).
>
> Signed-off-by: Gustavo Pimentel <gustavo.pimentel@xxxxxxxxxxxx>
> ---
> Change v2->v3:
> - New patch file created base on the previous patch
> "misc: pci_endpoint_test: Add MSI-X support" patch file following
> Kishon's suggestion.
> Change v3->v4:
> - Rebased to Lorenzo's master branch v4.18-rc1.
>
> drivers/misc/pci_endpoint_test.c | 84 ++++++++++++++++-----------
> drivers/pci/endpoint/functions/pci-epf-test.c | 60 ++++++++++++-------
> 2 files changed, 91 insertions(+), 53 deletions(-)
>
> diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c
> index 7b37046..56be808 100644
> --- a/drivers/misc/pci_endpoint_test.c
> +++ b/drivers/misc/pci_endpoint_test.c
> @@ -35,38 +35,42 @@
>
> #include <uapi/linux/pcitest.h>
>
> -#define DRV_MODULE_NAME "pci-endpoint-test"
> -
> -#define PCI_ENDPOINT_TEST_MAGIC 0x0
> -
> -#define PCI_ENDPOINT_TEST_COMMAND 0x4
> -#define COMMAND_RAISE_LEGACY_IRQ BIT(0)
> -#define COMMAND_RAISE_MSI_IRQ BIT(1)
> -#define MSI_NUMBER_SHIFT 2
> -/* 6 bits for MSI number */
> -#define COMMAND_READ BIT(8)
> -#define COMMAND_WRITE BIT(9)
> -#define COMMAND_COPY BIT(10)
> -
> -#define PCI_ENDPOINT_TEST_STATUS 0x8
> -#define STATUS_READ_SUCCESS BIT(0)
> -#define STATUS_READ_FAIL BIT(1)
> -#define STATUS_WRITE_SUCCESS BIT(2)
> -#define STATUS_WRITE_FAIL BIT(3)
> -#define STATUS_COPY_SUCCESS BIT(4)
> -#define STATUS_COPY_FAIL BIT(5)
> -#define STATUS_IRQ_RAISED BIT(6)
> -#define STATUS_SRC_ADDR_INVALID BIT(7)
> -#define STATUS_DST_ADDR_INVALID BIT(8)
> -
> -#define PCI_ENDPOINT_TEST_LOWER_SRC_ADDR 0xc
> +#define DRV_MODULE_NAME "pci-endpoint-test"
> +
> +#define IRQ_TYPE_LEGACY 0
> +#define IRQ_TYPE_MSI 1
> +
> +#define PCI_ENDPOINT_TEST_MAGIC 0x0
> +
> +#define PCI_ENDPOINT_TEST_COMMAND 0x4
> +#define COMMAND_RAISE_LEGACY_IRQ BIT(0)
> +#define COMMAND_RAISE_MSI_IRQ BIT(1)
Maybe you can add a comment here that BIT(2) is reserved for MSIX support
> +#define COMMAND_READ BIT(3)
> +#define COMMAND_WRITE BIT(4)
> +#define COMMAND_COPY BIT(5)
> +
> +#define PCI_ENDPOINT_TEST_STATUS 0x8
> +#define STATUS_READ_SUCCESS BIT(0)
> +#define STATUS_READ_FAIL BIT(1)
> +#define STATUS_WRITE_SUCCESS BIT(2)
> +#define STATUS_WRITE_FAIL BIT(3)
> +#define STATUS_COPY_SUCCESS BIT(4)
> +#define STATUS_COPY_FAIL BIT(5)
> +#define STATUS_IRQ_RAISED BIT(6)
> +#define STATUS_SRC_ADDR_INVALID BIT(7)
> +#define STATUS_DST_ADDR_INVALID BIT(8)
> +
> +#define PCI_ENDPOINT_TEST_LOWER_SRC_ADDR 0x0c
> #define PCI_ENDPOINT_TEST_UPPER_SRC_ADDR 0x10
>
> #define PCI_ENDPOINT_TEST_LOWER_DST_ADDR 0x14
> #define PCI_ENDPOINT_TEST_UPPER_DST_ADDR 0x18
>
> -#define PCI_ENDPOINT_TEST_SIZE 0x1c
> -#define PCI_ENDPOINT_TEST_CHECKSUM 0x20
> +#define PCI_ENDPOINT_TEST_SIZE 0x1c
> +#define PCI_ENDPOINT_TEST_CHECKSUM 0x20
> +
> +#define PCI_ENDPOINT_TEST_IRQ_TYPE 0x24
Is this not redundant? COMMAND_RAISE_LEGACY_IRQ, COMMAND_RAISE_MSI_IRQ already
indicates the irq type to be used.
> +#define PCI_ENDPOINT_TEST_IRQ_NUMBER 0x28
>
> static DEFINE_IDA(pci_endpoint_test_ida);
>
> @@ -179,6 +183,9 @@ static bool pci_endpoint_test_legacy_irq(struct pci_endpoint_test *test)
> {
> u32 val;
>
> + pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE,
> + IRQ_TYPE_LEGACY);
> + pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 0);
Not sure if the above writes are really required.
> pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,
> COMMAND_RAISE_LEGACY_IRQ);
> val = wait_for_completion_timeout(&test->irq_raised,
> @@ -190,20 +197,22 @@ static bool pci_endpoint_test_legacy_irq(struct pci_endpoint_test *test)
> }
>
> static bool pci_endpoint_test_msi_irq(struct pci_endpoint_test *test,
> - u8 msi_num)
> + u8 irq_num)
why do you want to rename this?
Thanks
Kishon
