1 // SPDX-License-Identifier: GPL-2.0-only
3  * Remote processor machine-specific module for DA8XX
26 		 "Name of DSP firmware file in /lib/firmware (if not specified defaults to 'rproc-dsp-fw')");
29  * OMAP-L138 Technical References:
30  * http://www.ti.com/product/omap-l138
38 #define DA8XX_RPROC_LOCAL_ADDRESS_MASK	(SZ_16M - 1)
41  * struct da8xx_rproc_mem - internal memory structure
44  * @dev_addr: Device address of the memory region from DSP view
55  * struct da8xx_rproc - da8xx remote processor instance state
59  * @dsp_clk: placeholder for platform's DSP clk
60  * @ack_fxn: chip-specific ack function for ack'ing irq
62  * @chipsig: virt ptr to DSP interrupt registers (CHIPSIG & CHIPSIG_CLR)
63  * @bootreg: virt ptr to DSP boot address register (HOST1CFG)
80  * handle_event() - inbound virtqueue message workqueue function
97  * da8xx_rproc_callback() - inbound virtqueue message handler
100  * core (DSP) has modified the state of a virtqueue.  There is no
102  * mailbox-based implementations on OMAP4.  As such, this handler "polls"
108 	struct da8xx_rproc *drproc = rproc->priv;  in da8xx_rproc_callback()
111 	chipsig = readl(drproc->chipsig);  in da8xx_rproc_callback()
114 		writel(SYSCFG_CHIPSIG0, drproc->chipsig + 4);  in da8xx_rproc_callback()
120 		 * this function, but since the ARM<->DSP interrupts in the  in da8xx_rproc_callback()
125 		drproc->ack_fxn(drproc->irq_data);  in da8xx_rproc_callback()
135 	struct device *dev = rproc->dev.parent;  in da8xx_rproc_start()
136 	struct da8xx_rproc *drproc = rproc->priv;  in da8xx_rproc_start()
137 	struct clk *dsp_clk = drproc->dsp_clk;  in da8xx_rproc_start()
138 	struct reset_control *dsp_reset = drproc->dsp_reset;  in da8xx_rproc_start()
142 	if (rproc->bootaddr & 0x3ff) {  in da8xx_rproc_start()
145 		return -EINVAL;  in da8xx_rproc_start()
148 	writel(rproc->bootaddr, drproc->bootreg);  in da8xx_rproc_start()
168 	struct da8xx_rproc *drproc = rproc->priv;  in da8xx_rproc_stop()
169 	struct device *dev = rproc->dev.parent;  in da8xx_rproc_stop()
172 	ret = reset_control_assert(drproc->dsp_reset);  in da8xx_rproc_stop()
178 	clk_disable_unprepare(drproc->dsp_clk);  in da8xx_rproc_stop()
186 	struct da8xx_rproc *drproc = rproc->priv;  in da8xx_rproc_kick()
189 	writel(SYSCFG_CHIPSIG2, drproc->chipsig);  in da8xx_rproc_kick()
203 	struct device *dev = &pdev->dev;  in da8xx_rproc_get_internal_memories()
207 	drproc->mem = devm_kcalloc(dev, num_mems, sizeof(*drproc->mem),  in da8xx_rproc_get_internal_memories()
209 	if (!drproc->mem)  in da8xx_rproc_get_internal_memories()
210 		return -ENOMEM;  in da8xx_rproc_get_internal_memories()
215 		drproc->mem[i].cpu_addr = devm_ioremap_resource(dev, res);  in da8xx_rproc_get_internal_memories()
216 		if (IS_ERR(drproc->mem[i].cpu_addr)) {  in da8xx_rproc_get_internal_memories()
219 			return PTR_ERR(drproc->mem[i].cpu_addr);  in da8xx_rproc_get_internal_memories()
221 		drproc->mem[i].bus_addr = res->start;  in da8xx_rproc_get_internal_memories()
222 		drproc->mem[i].dev_addr =  in da8xx_rproc_get_internal_memories()
223 				res->start & DA8XX_RPROC_LOCAL_ADDRESS_MASK;  in da8xx_rproc_get_internal_memories()
224 		drproc->mem[i].size = resource_size(res);  in da8xx_rproc_get_internal_memories()
227 			mem_names[i], &drproc->mem[i].bus_addr,  in da8xx_rproc_get_internal_memories()
228 			drproc->mem[i].size, drproc->mem[i].cpu_addr,  in da8xx_rproc_get_internal_memories()
229 			drproc->mem[i].dev_addr);  in da8xx_rproc_get_internal_memories()
231 	drproc->num_mems = num_mems;  in da8xx_rproc_get_internal_memories()
238 	struct device *dev = &pdev->dev;  in da8xx_rproc_probe()
256 		return -EINVAL;  in da8xx_rproc_probe()
276 		if (PTR_ERR(dsp_reset) != -EPROBE_DEFER)  in da8xx_rproc_probe()
283 	if (dev->of_node) {  in da8xx_rproc_probe()
292 	rproc = rproc_alloc(dev, "dsp", &da8xx_rproc_ops, da8xx_fw_name,  in da8xx_rproc_probe()
295 		ret = -ENOMEM;  in da8xx_rproc_probe()
300 	rproc->recovery_disabled = true;  in da8xx_rproc_probe()
302 	drproc = rproc->priv;  in da8xx_rproc_probe()
303 	drproc->rproc = rproc;  in da8xx_rproc_probe()
304 	drproc->dsp_clk = dsp_clk;  in da8xx_rproc_probe()
305 	drproc->dsp_reset = dsp_reset;  in da8xx_rproc_probe()
306 	rproc->has_iommu = false;  in da8xx_rproc_probe()
316 					handle_event, 0, "da8xx-remoteproc",  in da8xx_rproc_probe()
324 	 * rproc_add() can end up enabling the DSP's clk with the DSP  in da8xx_rproc_probe()
325 	 * *not* in reset, but da8xx_rproc_start() needs the DSP to be  in da8xx_rproc_probe()
332 	drproc->chipsig = chipsig;  in da8xx_rproc_probe()
333 	drproc->bootreg = bootreg;  in da8xx_rproc_probe()
334 	drproc->ack_fxn = irq_data->chip->irq_ack;  in da8xx_rproc_probe()
335 	drproc->irq_data = irq_data;  in da8xx_rproc_probe()
336 	drproc->irq = irq;  in da8xx_rproc_probe()
349 	if (dev->of_node)  in da8xx_rproc_probe()
357 	struct da8xx_rproc *drproc = rproc->priv;  in da8xx_rproc_remove()
358 	struct device *dev = &pdev->dev;  in da8xx_rproc_remove()
365 	disable_irq(drproc->irq);  in da8xx_rproc_remove()
369 	if (dev->of_node)  in da8xx_rproc_remove()
374 	{ .compatible = "ti,da850-dsp", },
383 		.name = "davinci-rproc",