vdpa/solidrun/snet_ctrl.c

62 static struct snet_ctrl_regs __iomem *snet_get_ctrl(struct snet *snet)
64 	return snet->bar + snet->psnet->cfg.ctrl_off;
132 static int snet_ctrl_read_from_dpu(struct snet *snet, u16 opcode, u16 vq_idx, void *buffer,
135 	struct pci_dev *pdev = snet->pdev;
136 	struct snet_ctrl_regs __iomem *regs = snet_get_ctrl(snet);
144 	if (!SNET_CFG_VER(snet, 2))
150 	mutex_lock(&snet->ctrl_lock);
165 	spin_lock(&snet->ctrl_spinlock);
170 	spin_unlock(&snet->ctrl_spinlock);
211 	mutex_unlock(&snet->ctrl_lock);
218 static int snet_send_ctrl_msg_old(struct snet *snet, u32 opcode)
220 	struct pci_dev *pdev = snet->pdev;
221 	struct snet_ctrl_regs __iomem *regs = snet_get_ctrl(snet);
224 	mutex_lock(&snet->ctrl_lock);
245 	mutex_unlock(&snet->ctrl_lock);
252 static int snet_send_ctrl_msg(struct snet *snet, u16 opcode, u16 vq_idx)
254 	struct pci_dev *pdev = snet->pdev;
255 	struct snet_ctrl_regs __iomem *regs = snet_get_ctrl(snet);
260 	if (!SNET_CFG_VER(snet, 2))
261 		return snet_send_ctrl_msg_old(snet, opcode);
263 	mutex_lock(&snet->ctrl_lock);
276 	spin_lock(&snet->ctrl_spinlock);
281 	spin_unlock(&snet->ctrl_spinlock);
306 	mutex_unlock(&snet->ctrl_lock);
310 void snet_ctrl_clear(struct snet *snet)
312 	struct snet_ctrl_regs __iomem *regs = snet_get_ctrl(snet);
317 int snet_destroy_dev(struct snet *snet)
319 	return snet_send_ctrl_msg(snet, SNET_CTRL_OP_DESTROY, 0);
322 int snet_read_vq_state(struct snet *snet, u16 idx, struct vdpa_vq_state *state)
324 	return snet_ctrl_read_from_dpu(snet, SNET_CTRL_OP_READ_VQ_STATE, idx, state,
328 int snet_suspend_dev(struct snet *snet)
330 	return snet_send_ctrl_msg(snet, SNET_CTRL_OP_SUSPEND, 0);
333 int snet_resume_dev(struct snet *snet)
335 	return snet_send_ctrl_msg(snet, SNET_CTRL_OP_RESUME, 0);