From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-dm3nam03on0069.outbound.protection.outlook.com ([104.47.41.69]:49804 "EHLO NAM03-DM3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756575AbcHZBtM (ORCPT ); Thu, 25 Aug 2016 21:49:12 -0400 From: Ley Foon Tan To: Bjorn Helgaas CC: , , Ley Foon Tan , Ley Foon Tan Subject: [PATCH v4 1/2] PCI: altera: Rework configs accessors Date: Fri, 26 Aug 2016 09:47:24 +0800 Message-ID: <1472176045-27815-2-git-send-email-lftan@altera.com> In-Reply-To: <1472176045-27815-1-git-send-email-lftan@altera.com> References: <1472176045-27815-1-git-send-email-lftan@altera.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-pci-owner@vger.kernel.org List-ID: Rework configs accessors so a future patch can use them in _probe() with struct altera_pcie instead of struct pci_bus. Signed-off-by: Ley Foon Tan --- drivers/pci/host/pcie-altera.c | 64 +++++++++++++++++++++++++++--------------- 1 file changed, 41 insertions(+), 23 deletions(-) diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/host/pcie-altera.c index 58eef99..34e6258 100644 --- a/drivers/pci/host/pcie-altera.c +++ b/drivers/pci/host/pcie-altera.c @@ -330,22 +330,14 @@ static int tlp_cfg_dword_write(struct altera_pcie *pcie, u8 bus, u32 devfn, return PCIBIOS_SUCCESSFUL; } -static int altera_pcie_cfg_read(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 *value) +static int _altera_pcie_cfg_read(struct altera_pcie *pcie, u8 busno, + unsigned int devfn, int where, int size, + u32 *value) { - struct altera_pcie *pcie = bus->sysdata; int ret; u32 data; u8 byte_en; - if (altera_pcie_hide_rc_bar(bus, devfn, where)) - return PCIBIOS_BAD_REGISTER_NUMBER; - - if (!altera_pcie_valid_config(pcie, bus, PCI_SLOT(devfn))) { - *value = 0xffffffff; - return PCIBIOS_DEVICE_NOT_FOUND; - } - switch (size) { case 1: byte_en = 1 << (where & 3); @@ -358,7 +350,7 @@ static int altera_pcie_cfg_read(struct pci_bus *bus, unsigned int devfn, break; } - ret = tlp_cfg_dword_read(pcie, bus->number, devfn, + ret = tlp_cfg_dword_read(pcie, busno, devfn, (where & ~DWORD_MASK), byte_en, &data); if (ret != PCIBIOS_SUCCESSFUL) return ret; @@ -378,20 +370,14 @@ static int altera_pcie_cfg_read(struct pci_bus *bus, unsigned int devfn, return PCIBIOS_SUCCESSFUL; } -static int altera_pcie_cfg_write(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 value) +static int _altera_pcie_cfg_write(struct altera_pcie *pcie, u8 busno, + unsigned int devfn, int where, int size, + u32 value) { - struct altera_pcie *pcie = bus->sysdata; u32 data32; u32 shift = 8 * (where & 3); u8 byte_en; - if (altera_pcie_hide_rc_bar(bus, devfn, where)) - return PCIBIOS_BAD_REGISTER_NUMBER; - - if (!altera_pcie_valid_config(pcie, bus, PCI_SLOT(devfn))) - return PCIBIOS_DEVICE_NOT_FOUND; - switch (size) { case 1: data32 = (value & 0xff) << shift; @@ -407,8 +393,40 @@ static int altera_pcie_cfg_write(struct pci_bus *bus, unsigned int devfn, break; } - return tlp_cfg_dword_write(pcie, bus->number, devfn, - (where & ~DWORD_MASK), byte_en, data32); + return tlp_cfg_dword_write(pcie, busno, devfn, (where & ~DWORD_MASK), + byte_en, data32); +} + +static int altera_pcie_cfg_read(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *value) +{ + struct altera_pcie *pcie = bus->sysdata; + + if (altera_pcie_hide_rc_bar(bus, devfn, where)) + return PCIBIOS_BAD_REGISTER_NUMBER; + + if (!altera_pcie_valid_config(pcie, bus, PCI_SLOT(devfn))) { + *value = 0xffffffff; + return PCIBIOS_DEVICE_NOT_FOUND; + } + + return _altera_pcie_cfg_read(pcie, bus->number, devfn, where, size, + value); +} + +static int altera_pcie_cfg_write(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 value) +{ + struct altera_pcie *pcie = bus->sysdata; + + if (altera_pcie_hide_rc_bar(bus, devfn, where)) + return PCIBIOS_BAD_REGISTER_NUMBER; + + if (!altera_pcie_valid_config(pcie, bus, PCI_SLOT(devfn))) + return PCIBIOS_DEVICE_NOT_FOUND; + + return _altera_pcie_cfg_write(pcie, bus->number, devfn, where, size, + value); } static struct pci_ops altera_pcie_ops = { -- 1.8.2.1