diff options
| author | Shradha Todi <[email protected]> | 2021-02-02 12:58:38 +0530 |
|---|---|---|
| committer | Bjorn Helgaas <[email protected]> | 2021-02-24 11:09:50 -0600 |
| commit | 5b4cf0f6532434537818e4a3c656b9f11c81729b (patch) | |
| tree | 53b583f09239609d67aac32febcde7b804056053 | |
| parent | 3856e1c5b88e5d363c251a2bc0d9fd0efdc6184a (diff) | |
PCI: dwc: Add upper limit address for outbound iATU
The size parameter is unsigned long type which can accept size > 4GB. In
that case, the upper limit address must be programmed. Add support to
program the upper limit address and set INCREASE_REGION_SIZE in case size >
4GB.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Shradha Todi <[email protected]>
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Reviewed-by: Pankaj Dubey <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-designware.c | 5 | ||||
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-designware.h | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index e7b9a7d7c9a2..fb637830bc71 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -333,11 +333,16 @@ static void __dw_pcie_prog_outbound_atu(struct dw_pcie *pci, u8 func_no, upper_32_bits(cpu_addr)); dw_pcie_writel_dbi(pci, PCIE_ATU_LIMIT, lower_32_bits(cpu_addr + size - 1)); + if (pci->version >= 0x460A) + dw_pcie_writel_dbi(pci, PCIE_ATU_UPPER_LIMIT, + upper_32_bits(cpu_addr + size - 1)); dw_pcie_writel_dbi(pci, PCIE_ATU_LOWER_TARGET, lower_32_bits(pci_addr)); dw_pcie_writel_dbi(pci, PCIE_ATU_UPPER_TARGET, upper_32_bits(pci_addr)); val = type | PCIE_ATU_FUNC_NUM(func_no); + val = ((upper_32_bits(size - 1)) && (pci->version >= 0x460A)) ? + val | PCIE_ATU_INCREASE_REGION_SIZE : val; if (pci->version == 0x490A) val = dw_pcie_enable_ecrc(val); dw_pcie_writel_dbi(pci, PCIE_ATU_CR1, val); diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index d8d2e0a7ac09..7247c8b01f04 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -100,6 +100,7 @@ #define PCIE_ATU_DEV(x) FIELD_PREP(GENMASK(23, 19), x) #define PCIE_ATU_FUNC(x) FIELD_PREP(GENMASK(18, 16), x) #define PCIE_ATU_UPPER_TARGET 0x91C +#define PCIE_ATU_UPPER_LIMIT 0x924 #define PCIE_MISC_CONTROL_1_OFF 0x8BC #define PCIE_DBI_RO_WR_EN BIT(0) |