[PATCH v2 12/12] PCI: iproc: Add support for the next-gen PAXB controller
From: Ray Jui
Date: Mon Oct 31 2016 - 20:39:52 EST
This patch adds the support for the next generation of the iProc PAXB
host controller, used in Stingray
Signed-off-by: Oza Oza <oza.oza@xxxxxxxxxxxx>
Signed-off-by: Ray Jui <ray.jui@xxxxxxxxxxxx>
Reviewed-by: Scott Branden <scott.branden@xxxxxxxxxxxx>
---
drivers/pci/host/pcie-iproc-platform.c | 3 +
drivers/pci/host/pcie-iproc.c | 128 +++++++++++++++++++++++++++++++++
drivers/pci/host/pcie-iproc.h | 1 +
3 files changed, 132 insertions(+)
diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/host/pcie-iproc-platform.c
index 47329d3..fd3ed9b 100644
--- a/drivers/pci/host/pcie-iproc-platform.c
+++ b/drivers/pci/host/pcie-iproc-platform.c
@@ -31,6 +31,9 @@ static const struct of_device_id iproc_pcie_of_match_table[] = {
.compatible = "brcm,iproc-pcie",
.data = (int *)IPROC_PCIE_PAXB,
}, {
+ .compatible = "brcm,iproc-pcie-paxb-v2",
+ .data = (int *)IPROC_PCIE_PAXB_V2,
+ }, {
.compatible = "brcm,iproc-pcie-paxc",
.data = (int *)IPROC_PCIE_PAXC,
}, {
diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c
index c4e2211..8ffb9d4 100644
--- a/drivers/pci/host/pcie-iproc.c
+++ b/drivers/pci/host/pcie-iproc.c
@@ -118,6 +118,29 @@ static const struct iproc_pcie_ob_map paxb_ob_map[] = {
},
};
+static const struct iproc_pcie_ob_map paxb_v2_ob_map[] = {
+ {
+ /* OARR0/OMAP0 */
+ .window_sizes = { 128, 256 },
+ .nr_sizes = 2,
+ },
+ {
+ /* OARR1/OMAP1 */
+ .window_sizes = { 128, 256 },
+ .nr_sizes = 2,
+ },
+ {
+ /* OARR2/OMAP2 */
+ .window_sizes = { 128, 256, 512, 1024 },
+ .nr_sizes = 4,
+ },
+ {
+ /* OARR3/OMAP3 */
+ .window_sizes = { 128, 256, 512, 1024 },
+ .nr_sizes = 4,
+ },
+};
+
/**
* iProc PCIe inbound mapping type
*/
@@ -156,6 +179,54 @@ struct iproc_pcie_ib_map {
u16 imap_window_offset;
};
+static const struct iproc_pcie_ib_map paxb_v2_ib_map[] = {
+ {
+ /* IARR0/IMAP0 */
+ .type = IPROC_PCIE_IB_MAP_IO,
+ .size_unit = SZ_1K,
+ .region_sizes = { 32 },
+ .nr_sizes = 1,
+ .nr_windows = 8,
+ .imap_addr_offset = 0x40,
+ .imap_window_offset = 0x4,
+ },
+ {
+ /* IARR1/IMAP1 (currently unused) */
+ .type = IPROC_PCIE_IB_MAP_INVALID,
+ },
+ {
+ /* IARR2/IMAP2 */
+ .type = IPROC_PCIE_IB_MAP_MEM,
+ .size_unit = SZ_1M,
+ .region_sizes = { 64, 128, 256, 512, 1024, 2048, 4096, 8192,
+ 16384 },
+ .nr_sizes = 9,
+ .nr_windows = 1,
+ .imap_addr_offset = 0x4,
+ .imap_window_offset = 0x8,
+ },
+ {
+ /* IARR3/IMAP3 */
+ .type = IPROC_PCIE_IB_MAP_MEM,
+ .size_unit = SZ_1G,
+ .region_sizes = { 1, 2, 4, 8, 16, 32 },
+ .nr_sizes = 6,
+ .nr_windows = 8,
+ .imap_addr_offset = 0x4,
+ .imap_window_offset = 0x8,
+ },
+ {
+ /* IARR4/IMAP4 */
+ .type = IPROC_PCIE_IB_MAP_MEM,
+ .size_unit = SZ_1G,
+ .region_sizes = { 32, 64, 128, 256, 512 },
+ .nr_sizes = 5,
+ .nr_windows = 8,
+ .imap_addr_offset = 0x4,
+ .imap_window_offset = 0x8,
+ },
+};
+
/*
* iProc PCIe host registers
*/
@@ -258,6 +329,34 @@ static const u16 iproc_pcie_reg_paxb[] = {
[IPROC_PCIE_APB_ERR_EN] = 0xf40,
};
+/* iProc PCIe PAXB v2 registers */
+static const u16 iproc_pcie_reg_paxb_v2[] = {
+ [IPROC_PCIE_CLK_CTRL] = 0x000,
+ [IPROC_PCIE_CFG_IND_ADDR] = 0x120,
+ [IPROC_PCIE_CFG_IND_DATA] = 0x124,
+ [IPROC_PCIE_CFG_ADDR] = 0x1f8,
+ [IPROC_PCIE_CFG_DATA] = 0x1fc,
+ [IPROC_PCIE_INTX_EN] = 0x330,
+ [IPROC_PCIE_OARR0] = 0xd20,
+ [IPROC_PCIE_OMAP0] = 0xd40,
+ [IPROC_PCIE_OARR1] = 0xd28,
+ [IPROC_PCIE_OMAP1] = 0xd48,
+ [IPROC_PCIE_OARR2] = 0xd60,
+ [IPROC_PCIE_OMAP2] = 0xd68,
+ [IPROC_PCIE_OARR3] = 0xdf0,
+ [IPROC_PCIE_OMAP3] = 0xdf8,
+ [IPROC_PCIE_IARR0] = 0xd00,
+ [IPROC_PCIE_IMAP0] = 0xc00,
+ [IPROC_PCIE_IARR2] = 0xd10,
+ [IPROC_PCIE_IMAP2] = 0xcc0,
+ [IPROC_PCIE_IARR3] = 0xe00,
+ [IPROC_PCIE_IMAP3] = 0xe08,
+ [IPROC_PCIE_IARR4] = 0xe68,
+ [IPROC_PCIE_IMAP4] = 0xe70,
+ [IPROC_PCIE_LINK_STATUS] = 0xf0c,
+ [IPROC_PCIE_APB_ERR_EN] = 0xf40,
+};
+
/* iProc PCIe PAXC v1 registers */
static const u16 iproc_pcie_reg_paxc[] = {
[IPROC_PCIE_CLK_CTRL] = 0x000,
@@ -912,6 +1011,19 @@ static int iproce_pcie_get_msi(struct iproc_pcie *pcie,
return 0;
}
+static int iproc_pcie_paxb_v2_msi_steer(struct iproc_pcie *pcie, u64 msi_addr)
+{
+ int ret;
+ struct of_pci_range range;
+
+ memset(&range, 0, sizeof(range));
+ range.size = SZ_32K;
+ range.pci_addr = range.cpu_addr = ALIGN(msi_addr, range.size);
+
+ ret = iproc_pcie_setup_ib(pcie, &range, IPROC_PCIE_IB_MAP_IO);
+ return ret;
+}
+
static void iproc_pcie_paxc_v2_msi_steer(struct iproc_pcie *pcie, u64 msi_addr)
{
u32 val;
@@ -963,6 +1075,11 @@ static int iproc_pcie_msi_steer(struct iproc_pcie *pcie,
}
switch (pcie->type) {
+ case IPROC_PCIE_PAXB_V2:
+ ret = iproc_pcie_paxb_v2_msi_steer(pcie, msi_addr);
+ if (ret)
+ return ret;
+ break;
case IPROC_PCIE_PAXC_V2:
iproc_pcie_paxc_v2_msi_steer(pcie, msi_addr);
break;
@@ -1040,6 +1157,17 @@ static int iproc_pcie_rev_init(struct iproc_pcie *pcie)
pcie->ob.nr_windows = ARRAY_SIZE(paxb_ob_map);
}
break;
+ case IPROC_PCIE_PAXB_V2:
+ regs = iproc_pcie_reg_paxb_v2;
+ pcie->has_apb_err_disable = true;
+ if (pcie->need_ob_cfg) {
+ pcie->ob_map = paxb_v2_ob_map;
+ pcie->ob.nr_windows = ARRAY_SIZE(paxb_v2_ob_map);
+ }
+ pcie->ib.nr_regions = ARRAY_SIZE(paxb_v2_ib_map);
+ pcie->ib_map = paxb_v2_ib_map;
+ pcie->need_msi_steer = true;
+ break;
case IPROC_PCIE_PAXC:
regs = iproc_pcie_reg_paxc;
pcie->ep_is_internal = true;
diff --git a/drivers/pci/host/pcie-iproc.h b/drivers/pci/host/pcie-iproc.h
index 3f2709a..04fed8e 100644
--- a/drivers/pci/host/pcie-iproc.h
+++ b/drivers/pci/host/pcie-iproc.h
@@ -26,6 +26,7 @@
enum iproc_pcie_type {
IPROC_PCIE_PAXB_BCMA = 0,
IPROC_PCIE_PAXB,
+ IPROC_PCIE_PAXB_V2,
IPROC_PCIE_PAXC,
IPROC_PCIE_PAXC_V2,
};
--
2.1.4