2  * Driver for MMC and SSD cards for Cavium ThunderX SOCs.
11 #include <linux/dma-mapping.h>
13 #include <linux/mmc/mmc.h>
23 	down(&host->mmc_serializer);  in thunder_mmc_acquire_bus()
28 	up(&host->mmc_serializer);  in thunder_mmc_release_bus()
33 	writeq(val, host->base + MIO_EMM_INT(host));  in thunder_mmc_int_enable()
34 	writeq(val, host->base + MIO_EMM_INT_EN_SET(host));  in thunder_mmc_int_enable()
48 		ret = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, i),  in thunder_mmc_register_interrupts()
60 	struct device_node *node = pdev->dev.of_node;  in thunder_mmc_probe()
61 	struct device *dev = &pdev->dev;  in thunder_mmc_probe()
68 		return -ENOMEM;  in thunder_mmc_probe()
79 	host->base = pcim_iomap(pdev, 0, pci_resource_len(pdev, 0));  in thunder_mmc_probe()
80 	if (!host->base) {  in thunder_mmc_probe()
81 		ret = -EINVAL;  in thunder_mmc_probe()
86 	host->dma_base = host->base;  in thunder_mmc_probe()
88 	host->reg_off = 0x2000;  in thunder_mmc_probe()
89 	host->reg_off_dma = 0x160;  in thunder_mmc_probe()
91 	host->clk = devm_clk_get(dev, NULL);  in thunder_mmc_probe()
92 	if (IS_ERR(host->clk)) {  in thunder_mmc_probe()
93 		ret = PTR_ERR(host->clk);  in thunder_mmc_probe()
97 	ret = clk_prepare_enable(host->clk);  in thunder_mmc_probe()
100 	host->sys_freq = clk_get_rate(host->clk);  in thunder_mmc_probe()
102 	spin_lock_init(&host->irq_handler_lock);  in thunder_mmc_probe()
103 	sema_init(&host->mmc_serializer, 1);  in thunder_mmc_probe()
105 	host->dev = dev;  in thunder_mmc_probe()
106 	host->acquire_bus = thunder_mmc_acquire_bus;  in thunder_mmc_probe()
107 	host->release_bus = thunder_mmc_release_bus;  in thunder_mmc_probe()
108 	host->int_enable = thunder_mmc_int_enable;  in thunder_mmc_probe()
110 	host->use_sg = true;  in thunder_mmc_probe()
111 	host->big_dma_addr = true;  in thunder_mmc_probe()
112 	host->need_irq_handler_lock = true;  in thunder_mmc_probe()
113 	host->last_slot = -1;  in thunder_mmc_probe()
123 	writeq(127, host->base + MIO_EMM_INT_EN(host));  in thunder_mmc_probe()
124 	writeq(3, host->base + MIO_EMM_DMA_INT_ENA_W1C(host));  in thunder_mmc_probe()
126 	writeq(BIT_ULL(16), host->base + MIO_EMM_DMA_FIFO_CFG(host));  in thunder_mmc_probe()
134 		 * mmc_of_parse and devm* require one device per slot.  in thunder_mmc_probe()
135 		 * Create a dummy device per slot and set the node pointer to  in thunder_mmc_probe()
136 		 * the slot. The easiest way to get this is using  in thunder_mmc_probe()
139 		if (of_device_is_compatible(child_node, "mmc-slot")) {  in thunder_mmc_probe()
140 			host->slot_pdev[i] = of_platform_device_create(child_node, NULL,  in thunder_mmc_probe()
141 								       &pdev->dev);  in thunder_mmc_probe()
142 			if (!host->slot_pdev[i])  in thunder_mmc_probe()
145 			ret = cvm_mmc_of_slot_probe(&host->slot_pdev[i]->dev, host);  in thunder_mmc_probe()
158 		if (host->slot[i])  in thunder_mmc_probe()
159 			cvm_mmc_of_slot_remove(host->slot[i]);  in thunder_mmc_probe()
160 		if (host->slot_pdev[i]) {  in thunder_mmc_probe()
161 			get_device(&host->slot_pdev[i]->dev);  in thunder_mmc_probe()
162 			of_platform_device_destroy(&host->slot_pdev[i]->dev, NULL);  in thunder_mmc_probe()
163 			put_device(&host->slot_pdev[i]->dev);  in thunder_mmc_probe()
166 	clk_disable_unprepare(host->clk);  in thunder_mmc_probe()
178 		if (host->slot[i])  in thunder_mmc_remove()
179 			cvm_mmc_of_slot_remove(host->slot[i]);  in thunder_mmc_remove()
181 	dma_cfg = readq(host->dma_base + MIO_EMM_DMA_CFG(host));  in thunder_mmc_remove()
183 	writeq(dma_cfg, host->dma_base + MIO_EMM_DMA_CFG(host));  in thunder_mmc_remove()
185 	clk_disable_unprepare(host->clk);  in thunder_mmc_remove()