1 // SPDX-License-Identifier: GPL-2.0-only
2 /* stnic.c : A SH7750 specific part of driver for NS DP83902A ST-NIC.
18 #include <mach-se/mach/se.h>
29 #define half	unsigned short  macro
97   *(vhalf *) (PA_83902 + ((reg) << 1)) = ((half) (val) << 8);  in STNIC_WRITE()
109     return -ENODEV;  in stnic_probe()
114 	return -ENOMEM;  in stnic_probe()
122   dev->base_addr = 0x1000;  in stnic_probe()
123   dev->irq = IRQ_STNIC;  in stnic_probe()
124   dev->netdev_ops = &ei_netdev_ops;  in stnic_probe()
128   err = request_irq (dev->irq, ei_interrupt, 0, DRV_NAME, dev);  in stnic_probe()
130 	netdev_emerg(dev, " unable to get IRQ %d.\n", dev->irq);  in stnic_probe()
135   ei_status.name = dev->name;  in stnic_probe()
153   ei_local->msg_enable = stnic_msg_enable;  in stnic_probe()
157     free_irq(dev->irq, dev);  in stnic_probe()
163   netdev_info(dev, "NS ST-NIC 83902A\n");  in stnic_probe()
186   half buf[2];  in stnic_get_hdr()
198   hdr->next = buf[0] >> 8;  in stnic_get_hdr()
199   hdr->status = buf[0] & 0xff;  in stnic_get_hdr()
201   hdr->count = buf[1];  in stnic_get_hdr()
203   hdr->count = ((buf[1] >> 8) & 0xff) | (buf[1] << 8);  in stnic_get_hdr()
207 	    ring_page, hdr->status, hdr->next, hdr->count);  in stnic_get_hdr()
214    The HP LAN doesn't use shared memory -- we put the packet
221   char *buf = skb->data;  in stnic_block_input()
222   half val;  in stnic_block_input()
244       length -= sizeof (half);  in stnic_block_input()
254   STNIC_WRITE (PG0_RBCR0, 1);	/* Write non-zero value */  in stnic_block_output()
270       *(vhalf *) PA_83902_IF = ((half) buf[1] << 8) | buf[0];  in stnic_block_output()
272       *(vhalf *) PA_83902_IF = ((half) buf[0] << 8) | buf[1];  in stnic_block_output()
275       buf += sizeof (half);  in stnic_block_output()
276       length -= sizeof (half);  in stnic_block_output()
293 	free_irq(stnic_dev->irq, stnic_dev);  in stnic_cleanup()