| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| 219 | 55.87% | 1 | 5.88% | |
| 147 | 37.50% | 7 | 41.18% | |
| 14 | 3.57% | 2 | 11.76% | |
| 3 | 0.77% | 2 | 11.76% | |
| 3 | 0.77% | 1 | 5.88% | |
| 3 | 0.77% | 1 | 5.88% | |
| 1 | 0.26% | 1 | 5.88% | |
| 1 | 0.26% | 1 | 5.88% | |
| 1 | 0.26% | 1 | 5.88% | |
| Total | 392 | 17 |
| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds (pre-git) | 219 | 55.87% | 1 | 5.88% |
| Matthew Wilcox | 147 | 37.50% | 7 | 41.18% |
| Helge Deller | 14 | 3.57% | 2 | 11.76% |
| Christoph Hellwig | 3 | 0.77% | 2 | 11.76% |
| David Woodhouse | 3 | 0.77% | 1 | 5.88% |
| Thomas Bogendoerfer | 3 | 0.77% | 1 | 5.88% |
| Greg Kroah-Hartman | 1 | 0.26% | 1 | 5.88% |
| Matt LaPlante | 1 | 0.26% | 1 | 5.88% |
| Adrian Bunk | 1 | 0.26% | 1 | 5.88% |
| Total | 392 | 17 |
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_PARISC_PCI_H #define __ASM_PARISC_PCI_H #include <linux/scatterlist.h> /* ** HP PCI platforms generally support multiple bus adapters. ** (workstations 1-~4, servers 2-~32) ** ** Newer platforms number the busses across PCI bus adapters *sparsely*. ** E.g. 0, 8, 16, ... ** ** Under a PCI bus, most HP platforms support PPBs up to two or three ** levels deep. See "Bit3" product line. */ #define PCI_MAX_BUSSES 256 /* To be used as: mdelay(pci_post_reset_delay); * * post_reset is the time the kernel should stall to prevent anyone from * accessing the PCI bus once #RESET is de-asserted. * PCI spec somewhere says 1 second but with multi-PCI bus systems, * this makes the boot time much longer than necessary. * 20ms seems to work for all the HP PCI implementations to date. */ #define pci_post_reset_delay 50 /* ** pci_hba_data (aka H2P_OBJECT in HP/UX) ** ** This is the "common" or "base" data structure which HBA drivers ** (eg Dino or LBA) are required to place at the top of their own ** platform_data structure. I've heard this called "C inheritance" too. ** ** Data needed by pcibios layer belongs here. */ struct pci_hba_data { void __iomem *base_addr; /* aka Host Physical Address */ const struct parisc_device *dev; /* device from PA bus walk */ struct pci_bus *hba_bus; /* primary PCI bus below HBA */ int hba_num; /* I/O port space access "key" */ struct resource bus_num; /* PCI bus numbers */ struct resource io_space; /* PIOP */ struct resource lmmio_space; /* bus addresses < 4Gb */ struct resource elmmio_space; /* additional bus addresses < 4Gb */ struct resource gmmio_space; /* bus addresses > 4Gb */ /* NOTE: Dino code assumes it can use *all* of the lmmio_space, * elmmio_space and gmmio_space as a contiguous array of * resources. This #define represents the array size */ #define DINO_MAX_LMMIO_RESOURCES 3 unsigned long lmmio_space_offset; /* CPU view - PCI view */ struct ioc *iommu; /* IOMMU this device is under */ /* REVISIT - spinlock to protect resources? */ #define HBA_NAME_SIZE 16 char io_name[HBA_NAME_SIZE]; char lmmio_name[HBA_NAME_SIZE]; char elmmio_name[HBA_NAME_SIZE]; char gmmio_name[HBA_NAME_SIZE]; }; /* ** We support 2^16 I/O ports per HBA. These are set up in the form ** 0xbbxxxx, where bb is the bus number and xxxx is the I/O port ** space address. */ #define HBA_PORT_SPACE_BITS 16 #define HBA_PORT_BASE(h) ((h) << HBA_PORT_SPACE_BITS) #define HBA_PORT_SPACE_SIZE (1UL << HBA_PORT_SPACE_BITS) #define PCI_PORT_HBA(a) ((a) >> HBA_PORT_SPACE_BITS) #define PCI_PORT_ADDR(a) ((a) & (HBA_PORT_SPACE_SIZE - 1)) #ifdef CONFIG_64BIT #define PCI_F_EXTEND 0xffffffff00000000UL #else /* !CONFIG_64BIT */ #define PCI_F_EXTEND 0UL #endif /* !CONFIG_64BIT */ /* ** Most PCI devices (eg Tulip, NCR720) also export the same registers ** to both MMIO and I/O port space. Due to poor performance of I/O Port ** access under HP PCI bus adapters, strongly recommend the use of MMIO ** address space. ** ** While I'm at it more PA programming notes: ** ** 1) MMIO stores (writes) are posted operations. This means the processor ** gets an "ACK" before the write actually gets to the device. A read ** to the same device (or typically the bus adapter above it) will ** force in-flight write transaction(s) out to the targeted device ** before the read can complete. ** ** 2) The Programmed I/O (PIO) data may not always be strongly ordered with ** respect to DMA on all platforms. Ie PIO data can reach the processor ** before in-flight DMA reaches memory. Since most SMP PA platforms ** are I/O coherent, it generally doesn't matter...but sometimes ** it does. ** ** I've helped device driver writers debug both types of problems. */ struct pci_port_ops { u8 (*inb) (struct pci_hba_data *hba, u16 port); u16 (*inw) (struct pci_hba_data *hba, u16 port); u32 (*inl) (struct pci_hba_data *hba, u16 port); void (*outb) (struct pci_hba_data *hba, u16 port, u8 data); void (*outw) (struct pci_hba_data *hba, u16 port, u16 data); void (*outl) (struct pci_hba_data *hba, u16 port, u32 data); }; struct pci_bios_ops { void (*init)(void); void (*fixup_bus)(struct pci_bus *bus); }; /* ** Stuff declared in arch/parisc/kernel/pci.c */ extern struct pci_port_ops *pci_port; extern struct pci_bios_ops *pci_bios; #ifdef CONFIG_PCI extern void pcibios_register_hba(struct pci_hba_data *); #else static inline void pcibios_register_hba(struct pci_hba_data *x) { } #endif extern void pcibios_init_bridge(struct pci_dev *); /* * pcibios_assign_all_busses() is used in drivers/pci/pci.c:pci_do_scan_bus() * 0 == check if bridge is numbered before re-numbering. * 1 == pci_do_scan_bus() should automatically number all PCI-PCI bridges. * * We *should* set this to zero for "legacy" platforms and one * for PAT platforms. * * But legacy platforms also need to renumber the busses below a Host * Bus controller. Adding a 4-port Tulip card on the first PCI root * bus of a C200 resulted in the secondary bus being numbered as 1. * The second PCI host bus controller's root bus had already been * assigned bus number 1 by firmware and sysfs complained. * * Firmware isn't doing anything wrong here since each controller * is its own PCI domain. It's simpler and easier for us to renumber * the busses rather than treat each Dino as a separate PCI domain. * Eventually, we may want to introduce PCI domains for Superdome or * rp7420/8420 boxes and then revisit this issue. */ #define pcibios_assign_all_busses() (1) #define PCIBIOS_MIN_IO 0x10 #define PCIBIOS_MIN_MEM 0x1000 /* NBPG - but pci/setup-res.c dies */ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) { return channel ? 15 : 14; } #define HAVE_PCI_MMAP #define ARCH_GENERIC_PCI_MMAP_RESOURCE #endif /* __ASM_PARISC_PCI_H */