47 #define RISC_INSTR(risc_pos, opcode)	(mantis->risc_cpu[risc_pos++] = cpu_to_le32(opcode))
58 int mantis_dma_exit(struct mantis_pci *mantis)  in mantis_dma_exit()  argument
60 	if (mantis->buf_cpu) {  in mantis_dma_exit()
63 			(unsigned long) mantis->buf_dma,  in mantis_dma_exit()
64 			 mantis->buf_cpu,  in mantis_dma_exit()
67 		pci_free_consistent(mantis->pdev, MANTIS_BUF_SIZE,  in mantis_dma_exit()
68 				    mantis->buf_cpu, mantis->buf_dma);  in mantis_dma_exit()
70 		mantis->buf_cpu = NULL;  in mantis_dma_exit()
72 	if (mantis->risc_cpu) {  in mantis_dma_exit()
75 			(unsigned long) mantis->risc_dma,  in mantis_dma_exit()
76 			mantis->risc_cpu,  in mantis_dma_exit()
79 		pci_free_consistent(mantis->pdev, MANTIS_RISC_SIZE,  in mantis_dma_exit()
80 				    mantis->risc_cpu, mantis->risc_dma);  in mantis_dma_exit()
82 		mantis->risc_cpu = NULL;  in mantis_dma_exit()
89 static inline int mantis_alloc_buffers(struct mantis_pci *mantis)  in mantis_alloc_buffers()  argument
91 	if (!mantis->buf_cpu) {  in mantis_alloc_buffers()
92 		mantis->buf_cpu = pci_alloc_consistent(mantis->pdev,  in mantis_alloc_buffers()
94 						       &mantis->buf_dma);  in mantis_alloc_buffers()
95 		if (!mantis->buf_cpu) {  in mantis_alloc_buffers()
103 			(unsigned long) mantis->buf_dma,  in mantis_alloc_buffers()
104 			mantis->buf_cpu, MANTIS_BUF_SIZE);  in mantis_alloc_buffers()
106 	if (!mantis->risc_cpu) {  in mantis_alloc_buffers()
107 		mantis->risc_cpu = pci_alloc_consistent(mantis->pdev,  in mantis_alloc_buffers()
109 							&mantis->risc_dma);  in mantis_alloc_buffers()
111 		if (!mantis->risc_cpu) {  in mantis_alloc_buffers()
115 			mantis_dma_exit(mantis);  in mantis_alloc_buffers()
121 			(unsigned long) mantis->risc_dma,  in mantis_alloc_buffers()
122 			mantis->risc_cpu, MANTIS_RISC_SIZE);  in mantis_alloc_buffers()
131 int mantis_dma_init(struct mantis_pci *mantis)  in mantis_dma_init()  argument
136 	err = mantis_alloc_buffers(mantis);  in mantis_dma_init()
150 static inline void mantis_risc_program(struct mantis_pci *mantis)  in mantis_risc_program()  argument
173 			RISC_INSTR(risc_pos, mantis->buf_dma + buf_pos);  in mantis_risc_program()
178 	RISC_INSTR(risc_pos, mantis->risc_dma);  in mantis_risc_program()
181 void mantis_dma_start(struct mantis_pci *mantis)  in mantis_dma_start()  argument
185 	mantis_risc_program(mantis);  in mantis_dma_start()
186 	mmwrite(mantis->risc_dma, MANTIS_RISC_START);  in mantis_dma_start()
190 	mantis->last_block = mantis->busy_block = 0;  in mantis_dma_start()
192 	mantis_unmask_ints(mantis, MANTIS_INT_RISCI);  in mantis_dma_start()
199 void mantis_dma_stop(struct mantis_pci *mantis)  in mantis_dma_stop()  argument
211 	mantis_mask_ints(mantis, MANTIS_INT_RISCI | MANTIS_INT_RISCEN);  in mantis_dma_stop()
217 	struct mantis_pci *mantis = (struct mantis_pci *) data;  in mantis_dma_xfer()  local
218 	struct mantis_hwconfig *config = mantis->hwconfig;  in mantis_dma_xfer()
220 	while (mantis->last_block != mantis->busy_block) {  in mantis_dma_xfer()
222 			mantis->last_block, mantis->busy_block);  in mantis_dma_xfer()
225 		(&mantis->demux, &mantis->buf_cpu[mantis->last_block * MANTIS_BLOCK_BYTES], MANTIS_BLOCK_BYTES);  in mantis_dma_xfer()
226 		mantis->last_block = (mantis->last_block + 1) % MANTIS_BLOCK_COUNT;  in mantis_dma_xfer()