On Sat, Jul 13, 2019 at 10:11:29PM +0800, Hou Zhiqiang wrote:
> The current code erroneously sets-up the CPU base address with
> parameter 'pci_addr', which is passed to initialize the PCI
> base address of the inbound window, and the upper 32-bit of the
> CPU base address of the inbound window is not initialized. This
> results in the current code only support 1:1 inbound window
> with limitation that the base address must be < 4GB.
>
> This patch introduces a new parameter 'u64 cpu_addr' to initialize
> both lower 32-bit and upper 32-bit of the CPU base address to make
> it can support non 1:1 inbound window and fix the base address must
> be < 4GB limitation.
>
> Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver")
> Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@xxxxxxx>
> Reviewed-by: Minghuan Lian <Minghuan.Lian@xxxxxxx>
> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@xxxxxxxxxxxxxx>
> ---
> V7:
> - This patch is #25 of V6 patches, rewrote the changelog.
>
> drivers/pci/controller/pcie-mobiveil.c | 10 +++++++---
> 1 file changed, 7 insertions(+), 3 deletions(-)
Applied to pci/mobiveil for v5.4, thanks.
Lorenzo
> diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c
> index 672e633..a45a644 100644
> --- a/drivers/pci/controller/pcie-mobiveil.c
> +++ b/drivers/pci/controller/pcie-mobiveil.c
> @@ -88,6 +88,7 @@
> #define AMAP_CTRL_TYPE_MASK 3
>
> #define PAB_EXT_PEX_AMAP_SIZEN(win) PAB_EXT_REG_ADDR(0xbef0, win)
> +#define PAB_EXT_PEX_AMAP_AXI_WIN(win) PAB_EXT_REG_ADDR(0xb4a0, win)
> #define PAB_PEX_AMAP_AXI_WIN(win) PAB_REG_ADDR(0x4ba4, win)
> #define PAB_PEX_AMAP_PEX_WIN_L(win) PAB_REG_ADDR(0x4ba8, win)
> #define PAB_PEX_AMAP_PEX_WIN_H(win) PAB_REG_ADDR(0x4bac, win)
> @@ -462,7 +463,7 @@ static int mobiveil_pcie_parse_dt(struct mobiveil_pcie *pcie)
> }
>
> static void program_ib_windows(struct mobiveil_pcie *pcie, int win_num,
> - u64 pci_addr, u32 type, u64 size)
> + u64 cpu_addr, u64 pci_addr, u32 type, u64 size)
> {
> u32 value;
> u64 size64 = ~(size - 1);
> @@ -482,7 +483,10 @@ static void program_ib_windows(struct mobiveil_pcie *pcie, int win_num,
> csr_writel(pcie, upper_32_bits(size64),
> PAB_EXT_PEX_AMAP_SIZEN(win_num));
>
> - csr_writel(pcie, pci_addr, PAB_PEX_AMAP_AXI_WIN(win_num));
> + csr_writel(pcie, lower_32_bits(cpu_addr),
> + PAB_PEX_AMAP_AXI_WIN(win_num));
> + csr_writel(pcie, upper_32_bits(cpu_addr),
> + PAB_EXT_PEX_AMAP_AXI_WIN(win_num));
>
> csr_writel(pcie, lower_32_bits(pci_addr),
> PAB_PEX_AMAP_PEX_WIN_L(win_num));
> @@ -624,7 +628,7 @@ static int mobiveil_host_init(struct mobiveil_pcie *pcie)
> CFG_WINDOW_TYPE, resource_size(pcie->ob_io_res));
>
> /* memory inbound translation window */
> - program_ib_windows(pcie, WIN_NUM_0, 0, MEM_WINDOW_TYPE, IB_WIN_SIZE);
> + program_ib_windows(pcie, WIN_NUM_0, 0, 0, MEM_WINDOW_TYPE, IB_WIN_SIZE);
>
> /* Get the I/O and memory ranges from DT */
> resource_list_for_each_entry(win, &pcie->resources) {
> --
> 2.9.5
>
