From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
To: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
bhelgaas@google.com, l.subrahmanya@mobiveil.co.in,
leoyang.li@nxp.com, lorenzo.pieralisi@arm.com
Cc: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Subject: [PATCHv7] PCI: mobiveil: Fix the CPU base address setup in inbound window
Date: Sat, 13 Jul 2019 22:11:29 +0800 [thread overview]
Message-ID: <20190713141129.32249-1-Zhiqiang.Hou@nxp.com> (raw)
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@nxp.com>
Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
---
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(-)
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
next reply other threads:[~2019-07-13 14:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-13 14:11 Hou Zhiqiang [this message]
2019-08-21 16:59 ` [PATCHv7] PCI: mobiveil: Fix the CPU base address setup in inbound window Lorenzo Pieralisi
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