diff options
Diffstat (limited to 'drivers/pci/msi.h')
| -rw-r--r-- | drivers/pci/msi.h | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/drivers/pci/msi.h b/drivers/pci/msi.h deleted file mode 100644 index 56951c39d3a..00000000000 --- a/drivers/pci/msi.h +++ /dev/null @@ -1,156 +0,0 @@ -/* - * Copyright (C) 2003-2004 Intel - * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com) - */ - -#ifndef MSI_H -#define MSI_H - -/* - * MSI operation vector. Used by the msi core code (drivers/pci/msi.c) - * to abstract platform-specific tasks relating to MSI address generation - * and resource management. - */ -struct msi_ops { - /** - * setup - generate an MSI bus address and data for a given vector - * @pdev: PCI device context (in) - * @vector: vector allocated by the msi core (in) - * @addr_hi: upper 32 bits of PCI bus MSI address (out) - * @addr_lo: lower 32 bits of PCI bus MSI address (out) - * @data: MSI data payload (out) - * - * Description: The setup op is used to generate a PCI bus addres and - * data which the msi core will program into the card MSI capability - * registers. The setup routine is responsible for picking an initial - * cpu to target the MSI at. The setup routine is responsible for - * examining pdev to determine the MSI capabilities of the card and - * generating a suitable address/data. The setup routine is - * responsible for allocating and tracking any system resources it - * needs to route the MSI to the cpu it picks, and for associating - * those resources with the passed in vector. - * - * Returns 0 if the MSI address/data was successfully setup. - **/ - - int (*setup) (struct pci_dev *pdev, unsigned int vector, - u32 *addr_hi, u32 *addr_lo, u32 *data); - - /** - * teardown - release resources allocated by setup - * @vector: vector context for resources (in) - * - * Description: The teardown op is used to release any resources - * that were allocated in the setup routine associated with the passed - * in vector. - **/ - - void (*teardown) (unsigned int vector); - - /** - * target - retarget an MSI at a different cpu - * @vector: vector context for resources (in) - * @cpu: new cpu to direct vector at (in) - * @addr_hi: new value of PCI bus upper 32 bits (in/out) - * @addr_lo: new value of PCI bus lower 32 bits (in/out) - * - * Description: The target op is used to redirect an MSI vector - * at a different cpu. addr_hi/addr_lo coming in are the existing - * values that the MSI core has programmed into the card. The - * target code is responsible for freeing any resources (if any) - * associated with the old address, and generating a new PCI bus - * addr_hi/addr_lo that will redirect the vector at the indicated cpu. - **/ - - void (*target) (unsigned int vector, unsigned int cpu, - u32 *addr_hi, u32 *addr_lo); -}; - -extern int msi_register(struct msi_ops *ops); - -#include <asm/msi.h> - -/* - * Assume the maximum number of hot plug slots supported by the system is about - * ten. The worstcase is that each of these slots is hot-added with a device, - * which has two MSI/MSI-X capable functions. To avoid any MSI-X driver, which - * attempts to request all available vectors, NR_HP_RESERVED_VECTORS is defined - * as below to ensure at least one message is assigned to each detected MSI/ - * MSI-X device function. - */ -#define NR_HP_RESERVED_VECTORS 20 - -extern int vector_irq[NR_VECTORS]; -extern void (*interrupt[NR_IRQS])(void); -extern int pci_vector_resources(int last, int nr_released); - -/* - * MSI-X Address Register - */ -#define PCI_MSIX_FLAGS_QSIZE 0x7FF -#define PCI_MSIX_FLAGS_ENABLE (1 << 15) -#define PCI_MSIX_FLAGS_BIRMASK (7 << 0) -#define PCI_MSIX_FLAGS_BITMASK (1 << 0) - -#define PCI_MSIX_ENTRY_SIZE 16 -#define PCI_MSIX_ENTRY_LOWER_ADDR_OFFSET 0 -#define PCI_MSIX_ENTRY_UPPER_ADDR_OFFSET 4 -#define PCI_MSIX_ENTRY_DATA_OFFSET 8 -#define PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET 12 - -#define msi_control_reg(base) (base + PCI_MSI_FLAGS) -#define msi_lower_address_reg(base) (base + PCI_MSI_ADDRESS_LO) -#define msi_upper_address_reg(base) (base + PCI_MSI_ADDRESS_HI) -#define msi_data_reg(base, is64bit) \ - ( (is64bit == 1) ? base+PCI_MSI_DATA_64 : base+PCI_MSI_DATA_32 ) -#define msi_mask_bits_reg(base, is64bit) \ - ( (is64bit == 1) ? base+PCI_MSI_MASK_BIT : base+PCI_MSI_MASK_BIT-4) -#define msi_disable(control) control &= ~PCI_MSI_FLAGS_ENABLE -#define multi_msi_capable(control) \ - (1 << ((control & PCI_MSI_FLAGS_QMASK) >> 1)) -#define multi_msi_enable(control, num) \ - control |= (((num >> 1) << 4) & PCI_MSI_FLAGS_QSIZE); -#define is_64bit_address(control) (control & PCI_MSI_FLAGS_64BIT) -#define is_mask_bit_support(control) (control & PCI_MSI_FLAGS_MASKBIT) -#define msi_enable(control, num) multi_msi_enable(control, num); \ - control |= PCI_MSI_FLAGS_ENABLE - -#define msix_table_offset_reg(base) (base + 0x04) -#define msix_pba_offset_reg(base) (base + 0x08) -#define msix_enable(control) control |= PCI_MSIX_FLAGS_ENABLE -#define msix_disable(control) control &= ~PCI_MSIX_FLAGS_ENABLE -#define msix_table_size(control) ((control & PCI_MSIX_FLAGS_QSIZE)+1) -#define multi_msix_capable msix_table_size -#define msix_unmask(address) (address & ~PCI_MSIX_FLAGS_BITMASK) -#define msix_mask(address) (address | PCI_MSIX_FLAGS_BITMASK) -#define msix_is_pending(address) (address & PCI_MSIX_FLAGS_PENDMASK) - -struct msi_desc { - struct { - __u8 type : 5; /* {0: unused, 5h:MSI, 11h:MSI-X} */ - __u8 maskbit : 1; /* mask-pending bit supported ? */ - __u8 state : 1; /* {0: free, 1: busy} */ - __u8 reserved: 1; /* reserved */ - __u8 entry_nr; /* specific enabled entry */ - __u8 default_vector; /* default pre-assigned vector */ - __u8 unused; /* formerly unused destination cpu*/ - }msi_attrib; - - struct { - __u16 head; - __u16 tail; - }link; - - void __iomem *mask_base; - struct pci_dev *dev; - -#ifdef CONFIG_PM - /* PM save area for MSIX address/data */ - - u32 address_hi_save; - u32 address_lo_save; - u32 data_save; -#endif -}; - -#endif /* MSI_H */ |