From: Frank Li <Frank.li@nxp.com>
To: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: jingoohan1@gmail.com, gustavo.pimentel@synopsys.com,
lpieralisi@kernel.org, robh+dt@kernel.org, kw@linux.com,
manivannan.sadhasivam@linaro.org, bhelgaas@google.com,
kishon@kernel.org, krzysztof.kozlowski+dt@linaro.org,
conor+dt@kernel.org, marek.vasut+renesas@gmail.com,
fancer.lancer@gmail.com, linux-pci@vger.kernel.org,
devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org
Subject: Re: [PATCH v20 02/19] PCI: dwc: Change arguments of dw_pcie_prog_outbound_atu()
Date: Mon, 29 Jan 2024 17:42:20 -0500 [thread overview]
Message-ID: <ZbgpzPjS7Jhe8fq5@lizhi-Precision-Tower-5810> (raw)
In-Reply-To: <20230825093219.2685912-3-yoshihiro.shimoda.uh@renesas.com>
On Fri, Aug 25, 2023 at 06:32:02PM +0900, Yoshihiro Shimoda wrote:
> This is a preparation before adding the Msg-type outbound iATU
> mapping. The respective update will require two more arguments added
> to __dw_pcie_prog_outbound_atu(). That will make the already
> complicated function prototype even more hard to comprehend accepting
> _eight_ arguments. In order to prevent that and keep the code
> more-or-less readable all the outbound iATU-related arguments are
> moved to the new config-structure: struct dw_pcie_ob_atu_cfg pointer
> to which shall be passed to dw_pcie_prog_outbound_atu(). The structure
> is supposed to be locally defined and populated with the outbound iATU
> settings implied by the caller context.
>
> As a result of the denoted change there is no longer need in having
> the two distinctive methods for the Host and End-point outbound iATU
> setups since the corresponding code can directly call the
> dw_pcie_prog_outbound_atu() method with the config-structure
> populated. Thus dw_pcie_prog_ep_outbound_atu() is dropped.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Yoshihiro:
I want to use this patch to send out PME message when suspend,
which should be similar with raise INTx. Can I include your this patches in
my PME enable patches list if your patch still not merge yet.
Frank
> ---
> .../pci/controller/dwc/pcie-designware-ep.c | 21 +++++---
> .../pci/controller/dwc/pcie-designware-host.c | 52 +++++++++++++------
> drivers/pci/controller/dwc/pcie-designware.c | 49 ++++++-----------
> drivers/pci/controller/dwc/pcie-designware.h | 15 ++++--
> 4 files changed, 77 insertions(+), 60 deletions(-)
>
> diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
> index ab87ea3b0986..747d5bc07222 100644
> --- a/drivers/pci/controller/dwc/pcie-designware-ep.c
> +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
> @@ -182,9 +182,8 @@ static int dw_pcie_ep_inbound_atu(struct dw_pcie_ep *ep, u8 func_no, int type,
> return 0;
> }
>
> -static int dw_pcie_ep_outbound_atu(struct dw_pcie_ep *ep, u8 func_no,
> - phys_addr_t phys_addr,
> - u64 pci_addr, size_t size)
> +static int dw_pcie_ep_outbound_atu(struct dw_pcie_ep *ep,
> + struct dw_pcie_ob_atu_cfg *atu)
> {
> struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
> u32 free_win;
> @@ -196,13 +195,13 @@ static int dw_pcie_ep_outbound_atu(struct dw_pcie_ep *ep, u8 func_no,
> return -EINVAL;
> }
>
> - ret = dw_pcie_prog_ep_outbound_atu(pci, func_no, free_win, PCIE_ATU_TYPE_MEM,
> - phys_addr, pci_addr, size);
> + atu->index = free_win;
> + ret = dw_pcie_prog_outbound_atu(pci, atu);
> if (ret)
> return ret;
>
> set_bit(free_win, ep->ob_window_map);
> - ep->outbound_addr[free_win] = phys_addr;
> + ep->outbound_addr[free_win] = atu->cpu_addr;
>
> return 0;
> }
> @@ -305,8 +304,14 @@ static int dw_pcie_ep_map_addr(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
> int ret;
> struct dw_pcie_ep *ep = epc_get_drvdata(epc);
> struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
> -
> - ret = dw_pcie_ep_outbound_atu(ep, func_no, addr, pci_addr, size);
> + struct dw_pcie_ob_atu_cfg atu = { 0 };
> +
> + atu.func_no = func_no;
> + atu.type = PCIE_ATU_TYPE_MEM;
> + atu.cpu_addr = addr;
> + atu.pci_addr = pci_addr;
> + atu.size = size;
> + ret = dw_pcie_ep_outbound_atu(ep, &atu);
> if (ret) {
> dev_err(pci->dev, "Failed to enable address\n");
> return ret;
> diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
> index 5c8cbc3afae4..01eff83c1f6d 100644
> --- a/drivers/pci/controller/dwc/pcie-designware-host.c
> +++ b/drivers/pci/controller/dwc/pcie-designware-host.c
> @@ -551,6 +551,7 @@ static void __iomem *dw_pcie_other_conf_map_bus(struct pci_bus *bus,
> {
> struct dw_pcie_rp *pp = bus->sysdata;
> struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
> + struct dw_pcie_ob_atu_cfg atu = { 0 };
> int type, ret;
> u32 busdev;
>
> @@ -573,8 +574,12 @@ static void __iomem *dw_pcie_other_conf_map_bus(struct pci_bus *bus,
> else
> type = PCIE_ATU_TYPE_CFG1;
>
> - ret = dw_pcie_prog_outbound_atu(pci, 0, type, pp->cfg0_base, busdev,
> - pp->cfg0_size);
> + atu.type = type;
> + atu.cpu_addr = pp->cfg0_base;
> + atu.pci_addr = busdev;
> + atu.size = pp->cfg0_size;
> +
> + ret = dw_pcie_prog_outbound_atu(pci, &atu);
> if (ret)
> return NULL;
>
> @@ -586,6 +591,7 @@ static int dw_pcie_rd_other_conf(struct pci_bus *bus, unsigned int devfn,
> {
> struct dw_pcie_rp *pp = bus->sysdata;
> struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
> + struct dw_pcie_ob_atu_cfg atu = { 0 };
> int ret;
>
> ret = pci_generic_config_read(bus, devfn, where, size, val);
> @@ -593,9 +599,12 @@ static int dw_pcie_rd_other_conf(struct pci_bus *bus, unsigned int devfn,
> return ret;
>
> if (pp->cfg0_io_shared) {
> - ret = dw_pcie_prog_outbound_atu(pci, 0, PCIE_ATU_TYPE_IO,
> - pp->io_base, pp->io_bus_addr,
> - pp->io_size);
> + atu.type = PCIE_ATU_TYPE_IO;
> + atu.cpu_addr = pp->io_base;
> + atu.pci_addr = pp->io_bus_addr;
> + atu.size = pp->io_size;
> +
> + ret = dw_pcie_prog_outbound_atu(pci, &atu);
> if (ret)
> return PCIBIOS_SET_FAILED;
> }
> @@ -608,6 +617,7 @@ static int dw_pcie_wr_other_conf(struct pci_bus *bus, unsigned int devfn,
> {
> struct dw_pcie_rp *pp = bus->sysdata;
> struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
> + struct dw_pcie_ob_atu_cfg atu = { 0 };
> int ret;
>
> ret = pci_generic_config_write(bus, devfn, where, size, val);
> @@ -615,9 +625,12 @@ static int dw_pcie_wr_other_conf(struct pci_bus *bus, unsigned int devfn,
> return ret;
>
> if (pp->cfg0_io_shared) {
> - ret = dw_pcie_prog_outbound_atu(pci, 0, PCIE_ATU_TYPE_IO,
> - pp->io_base, pp->io_bus_addr,
> - pp->io_size);
> + atu.type = PCIE_ATU_TYPE_IO;
> + atu.cpu_addr = pp->io_base;
> + atu.pci_addr = pp->io_bus_addr;
> + atu.size = pp->io_size;
> +
> + ret = dw_pcie_prog_outbound_atu(pci, &atu);
> if (ret)
> return PCIBIOS_SET_FAILED;
> }
> @@ -652,6 +665,7 @@ static struct pci_ops dw_pcie_ops = {
> static int dw_pcie_iatu_setup(struct dw_pcie_rp *pp)
> {
> struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
> + struct dw_pcie_ob_atu_cfg atu = { 0 };
> struct resource_entry *entry;
> int i, ret;
>
> @@ -679,10 +693,13 @@ static int dw_pcie_iatu_setup(struct dw_pcie_rp *pp)
> if (pci->num_ob_windows <= ++i)
> break;
>
> - ret = dw_pcie_prog_outbound_atu(pci, i, PCIE_ATU_TYPE_MEM,
> - entry->res->start,
> - entry->res->start - entry->offset,
> - resource_size(entry->res));
> + atu.index = i;
> + atu.type = PCIE_ATU_TYPE_MEM;
> + atu.cpu_addr = entry->res->start;
> + atu.pci_addr = entry->res->start - entry->offset;
> + atu.size = resource_size(entry->res);
> +
> + ret = dw_pcie_prog_outbound_atu(pci, &atu);
> if (ret) {
> dev_err(pci->dev, "Failed to set MEM range %pr\n",
> entry->res);
> @@ -692,10 +709,13 @@ static int dw_pcie_iatu_setup(struct dw_pcie_rp *pp)
>
> if (pp->io_size) {
> if (pci->num_ob_windows > ++i) {
> - ret = dw_pcie_prog_outbound_atu(pci, i, PCIE_ATU_TYPE_IO,
> - pp->io_base,
> - pp->io_bus_addr,
> - pp->io_size);
> + atu.index = i;
> + atu.type = PCIE_ATU_TYPE_IO;
> + atu.cpu_addr = pp->io_base;
> + atu.pci_addr = pp->io_bus_addr;
> + atu.size = pp->io_size;
> +
> + ret = dw_pcie_prog_outbound_atu(pci, &atu);
> if (ret) {
> dev_err(pci->dev, "Failed to set IO range %pr\n",
> entry->res);
> diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
> index 2459f2a61b9b..49b785509576 100644
> --- a/drivers/pci/controller/dwc/pcie-designware.c
> +++ b/drivers/pci/controller/dwc/pcie-designware.c
> @@ -464,56 +464,56 @@ static inline u32 dw_pcie_enable_ecrc(u32 val)
> return val | PCIE_ATU_TD;
> }
>
> -static int __dw_pcie_prog_outbound_atu(struct dw_pcie *pci, u8 func_no,
> - int index, int type, u64 cpu_addr,
> - u64 pci_addr, u64 size)
> +int dw_pcie_prog_outbound_atu(struct dw_pcie *pci,
> + const struct dw_pcie_ob_atu_cfg *atu)
> {
> + u64 cpu_addr = atu->cpu_addr;
> u32 retries, val;
> u64 limit_addr;
>
> if (pci->ops && pci->ops->cpu_addr_fixup)
> cpu_addr = pci->ops->cpu_addr_fixup(pci, cpu_addr);
>
> - limit_addr = cpu_addr + size - 1;
> + limit_addr = cpu_addr + atu->size - 1;
>
> if ((limit_addr & ~pci->region_limit) != (cpu_addr & ~pci->region_limit) ||
> !IS_ALIGNED(cpu_addr, pci->region_align) ||
> - !IS_ALIGNED(pci_addr, pci->region_align) || !size) {
> + !IS_ALIGNED(atu->pci_addr, pci->region_align) || !atu->size) {
> return -EINVAL;
> }
>
> - dw_pcie_writel_atu_ob(pci, index, PCIE_ATU_LOWER_BASE,
> + dw_pcie_writel_atu_ob(pci, atu->index, PCIE_ATU_LOWER_BASE,
> lower_32_bits(cpu_addr));
> - dw_pcie_writel_atu_ob(pci, index, PCIE_ATU_UPPER_BASE,
> + dw_pcie_writel_atu_ob(pci, atu->index, PCIE_ATU_UPPER_BASE,
> upper_32_bits(cpu_addr));
>
> - dw_pcie_writel_atu_ob(pci, index, PCIE_ATU_LIMIT,
> + dw_pcie_writel_atu_ob(pci, atu->index, PCIE_ATU_LIMIT,
> lower_32_bits(limit_addr));
> if (dw_pcie_ver_is_ge(pci, 460A))
> - dw_pcie_writel_atu_ob(pci, index, PCIE_ATU_UPPER_LIMIT,
> + dw_pcie_writel_atu_ob(pci, atu->index, PCIE_ATU_UPPER_LIMIT,
> upper_32_bits(limit_addr));
>
> - dw_pcie_writel_atu_ob(pci, index, PCIE_ATU_LOWER_TARGET,
> - lower_32_bits(pci_addr));
> - dw_pcie_writel_atu_ob(pci, index, PCIE_ATU_UPPER_TARGET,
> - upper_32_bits(pci_addr));
> + dw_pcie_writel_atu_ob(pci, atu->index, PCIE_ATU_LOWER_TARGET,
> + lower_32_bits(atu->pci_addr));
> + dw_pcie_writel_atu_ob(pci, atu->index, PCIE_ATU_UPPER_TARGET,
> + upper_32_bits(atu->pci_addr));
>
> - val = type | PCIE_ATU_FUNC_NUM(func_no);
> + val = atu->type | PCIE_ATU_FUNC_NUM(atu->func_no);
> if (upper_32_bits(limit_addr) > upper_32_bits(cpu_addr) &&
> dw_pcie_ver_is_ge(pci, 460A))
> val |= PCIE_ATU_INCREASE_REGION_SIZE;
> if (dw_pcie_ver_is(pci, 490A))
> val = dw_pcie_enable_ecrc(val);
> - dw_pcie_writel_atu_ob(pci, index, PCIE_ATU_REGION_CTRL1, val);
> + dw_pcie_writel_atu_ob(pci, atu->index, PCIE_ATU_REGION_CTRL1, val);
>
> - dw_pcie_writel_atu_ob(pci, index, PCIE_ATU_REGION_CTRL2, PCIE_ATU_ENABLE);
> + dw_pcie_writel_atu_ob(pci, atu->index, PCIE_ATU_REGION_CTRL2, PCIE_ATU_ENABLE);
>
> /*
> * Make sure ATU enable takes effect before any subsequent config
> * and I/O accesses.
> */
> for (retries = 0; retries < LINK_WAIT_MAX_IATU_RETRIES; retries++) {
> - val = dw_pcie_readl_atu_ob(pci, index, PCIE_ATU_REGION_CTRL2);
> + val = dw_pcie_readl_atu_ob(pci, atu->index, PCIE_ATU_REGION_CTRL2);
> if (val & PCIE_ATU_ENABLE)
> return 0;
>
> @@ -525,21 +525,6 @@ static int __dw_pcie_prog_outbound_atu(struct dw_pcie *pci, u8 func_no,
> return -ETIMEDOUT;
> }
>
> -int dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type,
> - u64 cpu_addr, u64 pci_addr, u64 size)
> -{
> - return __dw_pcie_prog_outbound_atu(pci, 0, index, type,
> - cpu_addr, pci_addr, size);
> -}
> -
> -int dw_pcie_prog_ep_outbound_atu(struct dw_pcie *pci, u8 func_no, int index,
> - int type, u64 cpu_addr, u64 pci_addr,
> - u64 size)
> -{
> - return __dw_pcie_prog_outbound_atu(pci, func_no, index, type,
> - cpu_addr, pci_addr, size);
> -}
> -
> static inline u32 dw_pcie_readl_atu_ib(struct dw_pcie *pci, u32 index, u32 reg)
> {
> return dw_pcie_readl_atu(pci, PCIE_ATU_REGION_DIR_IB, index, reg);
> diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
> index 755bcb406769..296c5b1ddc91 100644
> --- a/drivers/pci/controller/dwc/pcie-designware.h
> +++ b/drivers/pci/controller/dwc/pcie-designware.h
> @@ -298,6 +298,15 @@ enum dw_pcie_ltssm {
> DW_PCIE_LTSSM_UNKNOWN = 0xFFFFFFFF,
> };
>
> +struct dw_pcie_ob_atu_cfg {
> + int index;
> + int type;
> + u8 func_no;
> + u64 cpu_addr;
> + u64 pci_addr;
> + u64 size;
> +};
> +
> struct dw_pcie_host_ops {
> int (*host_init)(struct dw_pcie_rp *pp);
> void (*host_deinit)(struct dw_pcie_rp *pp);
> @@ -429,10 +438,8 @@ void dw_pcie_write_dbi2(struct dw_pcie *pci, u32 reg, size_t size, u32 val);
> int dw_pcie_link_up(struct dw_pcie *pci);
> void dw_pcie_upconfig_setup(struct dw_pcie *pci);
> int dw_pcie_wait_for_link(struct dw_pcie *pci);
> -int dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type,
> - u64 cpu_addr, u64 pci_addr, u64 size);
> -int dw_pcie_prog_ep_outbound_atu(struct dw_pcie *pci, u8 func_no, int index,
> - int type, u64 cpu_addr, u64 pci_addr, u64 size);
> +int dw_pcie_prog_outbound_atu(struct dw_pcie *pci,
> + const struct dw_pcie_ob_atu_cfg *atu);
> int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, int index, int type,
> u64 cpu_addr, u64 pci_addr, u64 size);
> int dw_pcie_prog_ep_inbound_atu(struct dw_pcie *pci, u8 func_no, int index,
> --
> 2.25.1
>
next prev parent reply other threads:[~2024-01-29 22:42 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-25 9:32 [PATCH v20 00/19] PCI: rcar-gen4: Add R-Car Gen4 PCIe support Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 01/19] PCI: Add INTx Mechanism Messages macros Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 02/19] PCI: dwc: Change arguments of dw_pcie_prog_outbound_atu() Yoshihiro Shimoda
2024-01-29 22:42 ` Frank Li [this message]
2024-01-30 0:46 ` Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 03/19] PCI: dwc: Add outbound MSG TLPs support Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 04/19] PCI: designware-ep: Add INTx IRQs support Yoshihiro Shimoda
2023-09-13 23:31 ` Bjorn Helgaas
2023-09-14 7:56 ` Yoshihiro Shimoda
2023-09-15 21:23 ` Bjorn Helgaas
2023-09-19 7:22 ` Yoshihiro Shimoda
2023-09-19 10:39 ` Bjorn Helgaas
2023-09-19 11:55 ` Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 05/19] PCI: dwc: endpoint: Add multiple PFs support for dbi2 Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 06/19] PCI: dwc: Add dw_pcie_link_set_max_link_width() Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 07/19] PCI: dwc: Add missing PCI_EXP_LNKCAP_MLW handling Yoshihiro Shimoda
2023-09-14 16:00 ` Bjorn Helgaas
2023-09-14 20:48 ` Serge Semin
2023-09-14 20:59 ` Bjorn Helgaas
2023-09-14 21:25 ` Serge Semin
2023-08-25 9:32 ` [PATCH v20 08/19] PCI: tegra194: Drop PCI_EXP_LNKSTA_NLW setting Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 09/19] PCI: dwc: Add EDMA_UNROLL capability flag Yoshihiro Shimoda
2023-09-14 16:09 ` Bjorn Helgaas
2023-09-14 21:07 ` Serge Semin
2023-08-25 9:32 ` [PATCH v20 10/19] PCI: dwc: Expose dw_pcie_ep_exit() to module Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 11/19] PCI: dwc: Expose dw_pcie_write_dbi2() " Yoshihiro Shimoda
2023-08-25 18:18 ` Serge Semin
2023-08-25 9:32 ` [PATCH v20 12/19] PCI: dwc: endpoint: Introduce .pre_init() and .deinit() Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 13/19] dt-bindings: PCI: dwc: Update maxItems of reg and reg-names Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 14/19] dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Host Yoshihiro Shimoda
2023-08-31 13:12 ` Geert Uytterhoeven
2023-09-01 1:13 ` Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 15/19] dt-bindings: PCI: renesas: Add R-Car Gen4 PCIe Endpoint Yoshihiro Shimoda
2023-08-31 13:16 ` Geert Uytterhoeven
2023-09-01 1:13 ` Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 16/19] PCI: rcar-gen4: Add R-Car Gen4 PCIe Host support Yoshihiro Shimoda
2023-09-14 16:34 ` Bjorn Helgaas
2023-09-15 9:37 ` Yoshihiro Shimoda
2023-09-15 20:38 ` Bjorn Helgaas
2023-09-19 7:03 ` Yoshihiro Shimoda
2023-09-14 16:58 ` Bjorn Helgaas
2023-09-15 9:37 ` Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 17/19] PCI: rcar-gen4-ep: Add R-Car Gen4 PCIe Endpoint support Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 18/19] MAINTAINERS: Update PCI DRIVER FOR RENESAS R-CAR for R-Car Gen4 Yoshihiro Shimoda
2023-08-25 9:32 ` [PATCH v20 19/19] misc: pci_endpoint_test: Add Device ID for R-Car S4-8 PCIe controller Yoshihiro Shimoda
2023-08-25 18:27 ` [PATCH v20 00/19] PCI: rcar-gen4: Add R-Car Gen4 PCIe support Serge Semin
2023-08-27 6:59 ` Krzysztof Wilczyński
2023-08-28 1:19 ` Yoshihiro Shimoda
2023-08-28 6:37 ` manivannan.sadhasivam
2023-08-28 13:58 ` Serge Semin
2023-08-29 12:02 ` Yoshihiro Shimoda
2023-08-28 16:07 ` Krzysztof Wilczyński
2023-08-29 12:13 ` Yoshihiro Shimoda
2023-08-27 16:27 ` Krzysztof Wilczyński
2023-08-31 1:34 ` Yoshihiro Shimoda
2023-08-31 14:04 ` Krzysztof Wilczyński
2023-09-01 0:20 ` Yoshihiro Shimoda
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