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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
5b37212a SR |
2 | /* |
3 | * Marvell SD Host Controller Interface | |
5b37212a SR |
4 | */ |
5 | ||
e75787d9 LW |
6 | #include <common.h> |
7 | #include <malloc.h> | |
8 | #include <sdhci.h> | |
5b37212a SR |
9 | #include <linux/mbus.h> |
10 | ||
11 | #define SDHCI_WINDOW_CTRL(win) (0x4080 + ((win) << 4)) | |
12 | #define SDHCI_WINDOW_BASE(win) (0x4084 + ((win) << 4)) | |
13 | ||
14 | static void sdhci_mvebu_mbus_config(void __iomem *base) | |
15 | { | |
16 | const struct mbus_dram_target_info *dram; | |
17 | int i; | |
18 | ||
19 | dram = mvebu_mbus_dram_info(); | |
20 | ||
21 | for (i = 0; i < 4; i++) { | |
22 | writel(0, base + SDHCI_WINDOW_CTRL(i)); | |
23 | writel(0, base + SDHCI_WINDOW_BASE(i)); | |
24 | } | |
25 | ||
26 | for (i = 0; i < dram->num_cs; i++) { | |
27 | const struct mbus_dram_window *cs = dram->cs + i; | |
28 | ||
29 | /* Write size, attributes and target id to control register */ | |
30 | writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) | | |
31 | (dram->mbus_dram_target_id << 4) | 1, | |
32 | base + SDHCI_WINDOW_CTRL(i)); | |
33 | ||
34 | /* Write base address to base register */ | |
35 | writel(cs->base, base + SDHCI_WINDOW_BASE(i)); | |
36 | } | |
37 | } | |
e75787d9 | 38 | |
02d3ad3e LW |
39 | #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS |
40 | static struct sdhci_ops mv_ops; | |
41 | ||
42 | #if defined(CONFIG_SHEEVA_88SV331xV5) | |
43 | #define SD_CE_ATA_2 0xEA | |
44 | #define MMC_CARD 0x1000 | |
45 | #define MMC_WIDTH 0x0100 | |
46 | static inline void mv_sdhci_writeb(struct sdhci_host *host, u8 val, int reg) | |
47 | { | |
48 | struct mmc *mmc = host->mmc; | |
3a48944b | 49 | u32 ata = (unsigned long)host->ioaddr + SD_CE_ATA_2; |
02d3ad3e LW |
50 | |
51 | if (!IS_SD(mmc) && reg == SDHCI_HOST_CONTROL) { | |
52 | if (mmc->bus_width == 8) | |
53 | writew(readw(ata) | (MMC_CARD | MMC_WIDTH), ata); | |
54 | else | |
55 | writew(readw(ata) & ~(MMC_CARD | MMC_WIDTH), ata); | |
56 | } | |
57 | ||
58 | writeb(val, host->ioaddr + reg); | |
59 | } | |
60 | ||
61 | #else | |
62 | #define mv_sdhci_writeb NULL | |
63 | #endif /* CONFIG_SHEEVA_88SV331xV5 */ | |
64 | #endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */ | |
65 | ||
e75787d9 | 66 | static char *MVSDH_NAME = "mv_sdh"; |
3a48944b | 67 | int mv_sdh_init(unsigned long regbase, u32 max_clk, u32 min_clk, u32 quirks) |
e75787d9 LW |
68 | { |
69 | struct sdhci_host *host = NULL; | |
ca4e7d67 | 70 | host = calloc(1, sizeof(*host)); |
e75787d9 LW |
71 | if (!host) { |
72 | printf("sdh_host malloc fail!\n"); | |
2cb5d67c | 73 | return -ENOMEM; |
e75787d9 LW |
74 | } |
75 | ||
76 | host->name = MVSDH_NAME; | |
77 | host->ioaddr = (void *)regbase; | |
78 | host->quirks = quirks; | |
6d0e34bf | 79 | host->max_clk = max_clk; |
02d3ad3e LW |
80 | #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS |
81 | memset(&mv_ops, 0, sizeof(struct sdhci_ops)); | |
bfe6f623 | 82 | mv_ops.write_b = mv_sdhci_writeb; |
02d3ad3e LW |
83 | host->ops = &mv_ops; |
84 | #endif | |
5b37212a SR |
85 | |
86 | if (CONFIG_IS_ENABLED(ARCH_MVEBU)) { | |
87 | /* Configure SDHCI MBUS mbus bridge windows */ | |
88 | sdhci_mvebu_mbus_config((void __iomem *)regbase); | |
89 | } | |
90 | ||
6d0e34bf | 91 | return add_sdhci(host, 0, min_clk); |
e75787d9 | 92 | } |