1 /* SPDX-License-Identifier: BSD-3-Clause */
49  * iavf_dmamap_cb - DMA mapping callback function
50  * @arg: pointer to return the segment address
55  * Callback used by the bus DMA code to obtain the segment address.
63         *(bus_addr_t *) arg = segs->ds_addr;  in iavf_dmamap_cb()
68  * iavf_allocate_virt_mem - Allocate virtual memory
69  * @hw: hardware structure
78 iavf_allocate_virt_mem(struct iavf_hw *hw __unused, struct iavf_virt_mem *mem,  in iavf_allocate_virt_mem()
81 	mem->va = malloc(size, M_IAVF, M_NOWAIT | M_ZERO);  in iavf_allocate_virt_mem()
82 	return(mem->va == NULL);  in iavf_allocate_virt_mem()
86  * iavf_free_virt_mem - Free virtual memory
87  * @hw: hardware structure
95 iavf_free_virt_mem(struct iavf_hw *hw __unused, struct iavf_virt_mem *mem)  in iavf_free_virt_mem()
97 	free(mem->va, M_IAVF);  in iavf_free_virt_mem()
98 	mem->va = NULL;  in iavf_free_virt_mem()
104  * iavf_allocate_dma_mem - Allocate DMA memory
105  * @hw: hardware structure
117 iavf_allocate_dma_mem(struct iavf_hw *hw, struct iavf_dma_mem *mem,  in iavf_allocate_dma_mem()  argument
120 	device_t	dev = ((struct iavf_osdep *)hw->back)->dev;  in iavf_allocate_dma_mem()
135 			       &mem->tag);  in iavf_allocate_dma_mem()
142 	err = bus_dmamem_alloc(mem->tag, (void **)&mem->va,  in iavf_allocate_dma_mem()
143 			     BUS_DMA_NOWAIT | BUS_DMA_ZERO, &mem->map);  in iavf_allocate_dma_mem()
150 	err = bus_dmamap_load(mem->tag, mem->map, mem->va,  in iavf_allocate_dma_mem()
153 			    &mem->pa,  in iavf_allocate_dma_mem()
161 	mem->nseg = 1;  in iavf_allocate_dma_mem()
162 	mem->size = size;  in iavf_allocate_dma_mem()
163 	bus_dmamap_sync(mem->tag, mem->map,  in iavf_allocate_dma_mem()
167 	bus_dmamem_free(mem->tag, mem->va, mem->map);  in iavf_allocate_dma_mem()
169 	bus_dma_tag_destroy(mem->tag);  in iavf_allocate_dma_mem()
171 	mem->map = NULL;  in iavf_allocate_dma_mem()
172 	mem->tag = NULL;  in iavf_allocate_dma_mem()
177  * iavf_free_dma_mem - Free DMA memory allocation
178  * @hw: hardware structure
186 iavf_free_dma_mem(struct iavf_hw *hw __unused, struct iavf_dma_mem *mem)  in iavf_free_dma_mem()
188 	bus_dmamap_sync(mem->tag, mem->map,  in iavf_free_dma_mem()
190 	bus_dmamap_unload(mem->tag, mem->map);  in iavf_free_dma_mem()
191 	bus_dmamem_free(mem->tag, mem->va, mem->map);  in iavf_free_dma_mem()
192 	bus_dma_tag_destroy(mem->tag);  in iavf_free_dma_mem()
197  * iavf_init_spinlock - Initialize a spinlock
210 	mtx_init(&lock->mutex, "mutex",  in iavf_init_spinlock()
215  * iavf_acquire_spinlock - Acquire a spin lock
223 	mtx_lock(&lock->mutex);  in iavf_acquire_spinlock()
227  * iavf_release_spinlock - Release a spin lock
235 	mtx_unlock(&lock->mutex);  in iavf_release_spinlock()
239  * iavf_destroy_spinlock - Destroy a spin lock
251 	if (mtx_initialized(&lock->mutex))  in iavf_destroy_spinlock()
252 		mtx_destroy(&lock->mutex);  in iavf_destroy_spinlock()
256  * iavf_debug_shared - Log a debug message if enabled
257  * @hw: device hardware structure
261  * Checks if the mask is enabled in the hw->debug_mask. If so, prints
265 iavf_debug_shared(struct iavf_hw *hw, uint64_t mask, char *fmt, ...)  in iavf_debug_shared()  argument
270 	if (!(mask & ((struct iavf_hw *)hw)->debug_mask))  in iavf_debug_shared()
273 	dev = ((struct iavf_osdep *)hw->back)->dev;  in iavf_debug_shared()
275 	/* Re-implement device_printf() */  in iavf_debug_shared()
283  * iavf_read_pci_cfg - Read a PCI config register
284  * @hw: device hardware structure
293 iavf_read_pci_cfg(struct iavf_hw *hw, u32 reg)  in iavf_read_pci_cfg()  argument
297         value = pci_read_config(((struct iavf_osdep *)hw->back)->dev,  in iavf_read_pci_cfg()
304  * iavf_write_pci_cfg - Write a PCI config register
305  * @hw: device hardware structure
313 iavf_write_pci_cfg(struct iavf_hw *hw, u32 reg, u16 value)  in iavf_write_pci_cfg()  argument
315         pci_write_config(((struct iavf_osdep *)hw->back)->dev,  in iavf_write_pci_cfg()
322  * iavf_rd32 - Read a 32bit hardware register value
323  * @hw: the private hardware structure
324  * @reg: register address to read
331 iavf_rd32(struct iavf_hw *hw, uint32_t reg)  in iavf_rd32()  argument
333 	struct iavf_osdep *osdep = (struct iavf_osdep *)hw->back;  in iavf_rd32()
335 	KASSERT(reg < osdep->mem_bus_space_size,  in iavf_rd32()
337 	    (uintmax_t)reg, (uintmax_t)osdep->mem_bus_space_size));  in iavf_rd32()
339 	return (bus_space_read_4(osdep->mem_bus_space_tag,  in iavf_rd32()
340 	    osdep->mem_bus_space_handle, reg));  in iavf_rd32()
344  * iavf_wr32 - Write a 32bit hardware register
345  * @hw: the private hardware structure
346  * @reg: the register address to write to
349  * Write the specified 32bit value to a register address in BAR0.
352 iavf_wr32(struct iavf_hw *hw, uint32_t reg, uint32_t val)  in iavf_wr32()  argument
354 	struct iavf_osdep *osdep = (struct iavf_osdep *)hw->back;  in iavf_wr32()
356 	KASSERT(reg < osdep->mem_bus_space_size,  in iavf_wr32()
358 	    (uintmax_t)reg, (uintmax_t)osdep->mem_bus_space_size));  in iavf_wr32()
360 	bus_space_write_4(osdep->mem_bus_space_tag,  in iavf_wr32()
361 	    osdep->mem_bus_space_handle, reg, val);  in iavf_wr32()
365  * iavf_flush - Flush register writes
366  * @hw: private hardware structure
372 iavf_flush(struct iavf_hw *hw)  in iavf_flush()  argument
374 	struct iavf_osdep *osdep = (struct iavf_osdep *)hw->back;  in iavf_flush()
376 	rd32(hw, osdep->flush_reg);  in iavf_flush()
380  * iavf_debug_core - Debug printf for core driver code
388  * log messages at run time by toggling the enabled_mask in the device
399 	/* Re-implement device_printf() */  in iavf_debug_core()