diff options
Diffstat (limited to 'libddekit/include/ddekit/pci.h')
| -rw-r--r-- | libddekit/include/ddekit/pci.h | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/libddekit/include/ddekit/pci.h b/libddekit/include/ddekit/pci.h new file mode 100644 index 00000000..9ec7cd4f --- /dev/null +++ b/libddekit/include/ddekit/pci.h @@ -0,0 +1,199 @@ +#ifndef _ddekit_pci_h +#define _ddekit_pci_h + +#include <l4/dde/ddekit/types.h> + +/** \defgroup DDEKit_pci */ + +/** Our version of PCI_ANY_ID */ +#define DDEKIT_PCI_ANY_ID (~0) + +/** Copy of L4IO_PCIDEV_RES */ +#define DDEKIT_PCIDEV_RES 12 + +struct ddekit_pci_dev; + +/** PCI resource descriptor. Copied from generic_io. + * + * XXX! + */ +typedef struct ddekit_pci_resource { + unsigned long start; + unsigned long end; + unsigned long flags; +} ddekit_pci_res_t; + +void ddekit_pci_init(void); + +int ddekit_pci_get_device(int nr, int *bus, int *slot, int *func); + +int ddekit_pci_read(int bus, int slot, int func, int pos, int len, ddekit_uint32_t *val); +int ddekit_pci_write(int bus, int slot, int func, int pos, int len, ddekit_uint32_t val); + +/** Read byte from PCI config space. + * + * \ingroup DDEKit_pci + * + * \param bus bus ID + * \param slot slot # + * \param func function # + * \param pos offset in config space + * \retval val read value + * + * \return 0 success + */ +int ddekit_pci_readb (int bus, int slot, int func, int pos, ddekit_uint8_t *val); + +/** Read word from PCI config space. + * + * \ingroup DDEKit_pci + * + * \param bus bus ID + * \param slot slot # + * \param func function # + * \param pos offset in config space + * \retval val read value + * + * \return 0 success + */ +int ddekit_pci_readw (int bus, int slot, int func, int pos, ddekit_uint16_t *val); + +/** Read dword from PCI config space. + * + * \ingroup DDEKit_pci + * + * \param bus bus ID + * \param slot slot # + * \param func function # + * \param pos offset in config space + * \retval val read value + * + * \return 0 success + */ +int ddekit_pci_readl (int bus, int slot, int func, int pos, ddekit_uint32_t *val); + +/** Write byte to PCI config space. + * + * \ingroup DDEKit_pci + * + * \param bus bus ID + * \param slot slot # + * \param func function # + * \param pos offset in config space + * \retval val value to write + * + * \return 0 success + */ +int ddekit_pci_writeb(int bus, int slot, int func, int pos, ddekit_uint8_t val); + +/** Write word to PCI config space. + * + * \ingroup DDEKit_pci + * + * \param bus bus ID + * \param slot slot # + * \param func function # + * \param pos offset in config space + * \retval val value to write + * + * \return 0 success + */ +int ddekit_pci_writew(int bus, int slot, int func, int pos, ddekit_uint16_t val); + +/** Write word to PCI config space. + * + * \ingroup DDEKit_pci + * + * \param bus bus ID + * \param slot slot # + * \param func function # + * \param pos offset in config space + * \retval val value to write + * + * \return 0 success + */ +int ddekit_pci_writel(int bus, int slot, int func, int pos, ddekit_uint32_t val); + +/** Find a PCI device. + * + * \ingroup DDEKit_pci + * + * \param bus pointer to bus number or \ref DDEKIT_PCI_ANY_ID + * \param slot pointer to slot number (devfn >> DEVFN_SLOTSHIFT) or \ref DDEKIT_PCI_ANY_ID + * \param func pointer to func number (devfc & DEVFN_FUNCMASK) or \ref DDEKIT_PCI_ANY_ID + * \param start search device list only behind this device (excluding it!), NULL + * searches whole device list + * + * \retval bus bus number + * \retval slot slot number + * \retval func function number + * + * \return device a valid PCI device + * \return NULL if no device found + */ +struct ddekit_pci_dev * +ddekit_pci_find_device(int *bus, int *slot, int *func, struct ddekit_pci_dev *start); + +/** Enable PCI device + * \ingroup DDEKit_pci + */ +int ddekit_pci_enable_device(struct ddekit_pci_dev *dev); + +/** Disable PCI device + * \ingroup DDEKit_pci + */ +int ddekit_pci_disable_device(struct ddekit_pci_dev *dev); + +/** Enable bus-mastering for device. + * \ingroup DDEKit_pci + */ +void ddekit_pci_set_master(struct ddekit_pci_dev *dev); + +/** Get device vendor ID. + * \ingroup DDEKit_pci + */ +unsigned short ddekit_pci_get_vendor(struct ddekit_pci_dev *dev); + +/** Get device ID. + * \ingroup DDEKit_pci + */ +unsigned short ddekit_pci_get_device_id(struct ddekit_pci_dev *dev); + +/** Get device subvendor ID. + * \ingroup DDEKit_pci + */ +unsigned short ddekit_pci_get_sub_vendor(struct ddekit_pci_dev *dev); + +/** Get subdevice ID. + * \ingroup DDEKit_pci + */ +unsigned short ddekit_pci_get_sub_device(struct ddekit_pci_dev *dev); + +/** Get device class ID. + * \ingroup DDEKit_pci + */ +unsigned ddekit_pci_get_dev_class(struct ddekit_pci_dev *dev); + +/** Get device's IRQ number. + * \ingroup DDEKit_pci + */ +unsigned long ddekit_pci_get_irq(struct ddekit_pci_dev *dev); + +/** Get device name. + * \ingroup DDEKit_pci + */ +char *ddekit_pci_get_name(struct ddekit_pci_dev *dev); + +/** Get device's slot name. + * \ingroup DDEKit_pci + */ +char *ddekit_pci_get_slot_name(struct ddekit_pci_dev *dev); + +/** Get one of the device's resources. + * \ingroup DDEKit_pci + */ +ddekit_pci_res_t *ddekit_pci_get_resource(struct ddekit_pci_dev *dev, unsigned int idx); + +int ddekit_pci_irq_enable(int bus, int slot, int func, int pin, int *irq); + +#endif // _ddekit_pci_h |