@@ -1292,6 +1292,9 @@ config PCI_DOMAINS
bool
depends on PCI
+config PCI_DOMAINS_GENERIC
+ def_bool PCI_DOMAINS
+
config PCI_NANOENGINE
bool "BSE nanoEngine PCI support"
depends on SA1100_NANOENGINE
@@ -19,9 +19,6 @@ struct pci_bus;
struct device;
struct hw_pci {
-#ifdef CONFIG_PCI_DOMAINS
- int domain;
-#endif
struct pci_ops *ops;
int nr_controllers;
void **private_data;
@@ -44,9 +41,6 @@ struct hw_pci {
* Per-controller structure
*/
struct pci_sys_data {
-#ifdef CONFIG_PCI_DOMAINS
- int domain;
-#endif
struct list_head node;
int busnr; /* primary bus number */
u64 mem_offset; /* bus->cpu memory mapping offset */
@@ -18,13 +18,6 @@ static inline int pcibios_assign_all_busses(void)
}
#ifdef CONFIG_PCI_DOMAINS
-static inline int pci_domain_nr(struct pci_bus *bus)
-{
- struct pci_sys_data *root = bus->sysdata;
-
- return root->domain;
-}
-
static inline int pci_proc_domain(struct pci_bus *bus)
{
return pci_domain_nr(bus);
@@ -468,9 +468,6 @@ static void pcibios_init_hw(struct device *parent, struct hw_pci *hw,
if (!sys)
panic("PCI: unable to allocate sys data!");
-#ifdef CONFIG_PCI_DOMAINS
- sys->domain = hw->domain;
-#endif
sys->busnr = busnr;
sys->swizzle = hw->swizzle;
sys->map_irq = hw->map_irq;
@@ -101,9 +101,7 @@ struct mvebu_pcie {
struct mvebu_pcie_port *ports;
struct msi_chip *msi;
struct resource io;
- char io_name[30];
struct resource realio;
- char mem_name[30];
struct resource mem;
struct resource busn;
int nports;
@@ -722,18 +720,9 @@ static int mvebu_pcie_setup(int nr, struct pci_sys_data *sys)
{
struct mvebu_pcie *pcie = sys_to_pcie(sys);
int i;
- int domain = 0;
-#ifdef CONFIG_PCI_DOMAINS
- domain = sys->domain;
-#endif
-
- snprintf(pcie->mem_name, sizeof(pcie->mem_name), "PCI MEM %04x",
- domain);
- pcie->mem.name = pcie->mem_name;
-
- snprintf(pcie->io_name, sizeof(pcie->io_name), "PCI I/O %04x", domain);
- pcie->realio.name = pcie->io_name;
+ pcie->mem.name = "PCI MEM";
+ pcie->realio.name = "PCI I/O";
if (request_resource(&iomem_resource, &pcie->mem))
return 0;
@@ -502,9 +502,6 @@ int __init dw_pcie_host_init(struct pcie_port *pp)
dw_pci.private_data = (void **)&pp;
pci_common_init_dev(pp->dev, &dw_pci);
-#ifdef CONFIG_PCI_DOMAINS
- dw_pci.domain++;
-#endif
return 0;
}
@@ -404,9 +404,6 @@ static void rcar_pcie_enable(struct rcar_pcie *pcie)
rcar_pci.private_data = (void **)&pcie;
pci_common_init_dev(&pdev->dev, &rcar_pci);
-#ifdef CONFIG_PCI_DOMAINS
- rcar_pci.domain++;
-#endif
}
static int phy_wait_for_ack(struct rcar_pcie *pcie)
Most if not all ARM PCI host controller device drivers either ignore the domain field in the pci_sys_data structure or just increment it every time a host controller is probed, using it as a domain counter. Therefore, instead of relying on pci_sys_data to stash the domain number in a standard location, ARM pcibios code can be moved to the newly introduced generic PCI domains code, implemented in commits: commit 41e5c0f81d3e676d671d96a0a1fafb27abfbd9 ("of/pci: Add pci_get_new_domain_nr() and of_get_pci_domain_nr()") commit 670ba0c8883b576d0aec28bd7a838358a4be1 ("PCI: Add generic domain handling") ARM code is made to select PCI_DOMAINS_GENERIC by default, which builds core PCI code that assigns the domain number through the generic function: void pci_bus_assign_domain_nr(...) that relies on a DT property to define the domain number or falls back to a counter according to a predefined logic; its usage replaces the current domain assignment code in PCI host controllers present in the kernel. Acked-by: Lucas Stach <l.stach@pengutronix.de> Acked-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Phil Edworthy <phil.edworthy@renesas.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Phil Edworthy <phil.edworthy@renesas.com> Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Cc: Jingoo Han <jg1.han@samsung.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Mohit Kumar <mohit.kumar@st.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Yijing Wang <wangyijing@huawei.com> --- arch/arm/Kconfig | 3 +++ arch/arm/include/asm/mach/pci.h | 6 ------ arch/arm/include/asm/pci.h | 7 ------- arch/arm/kernel/bios32.c | 3 --- drivers/pci/host/pci-mvebu.c | 15 ++------------- drivers/pci/host/pcie-designware.c | 3 --- drivers/pci/host/pcie-rcar.c | 3 --- 7 files changed, 5 insertions(+), 35 deletions(-)