diff options
Diffstat (limited to 'arch/arm/mach-netx/xc.c')
| -rw-r--r-- | arch/arm/mach-netx/xc.c | 246 |
1 files changed, 0 insertions, 246 deletions
diff --git a/arch/arm/mach-netx/xc.c b/arch/arm/mach-netx/xc.c deleted file mode 100644 index 885a618b2651..000000000000 --- a/arch/arm/mach-netx/xc.c +++ /dev/null @@ -1,246 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * arch/arm/mach-netx/xc.c - * - * Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix - */ - -#include <linux/init.h> -#include <linux/device.h> -#include <linux/firmware.h> -#include <linux/mutex.h> -#include <linux/slab.h> -#include <linux/io.h> -#include <linux/export.h> - -#include <mach/hardware.h> -#include <mach/irqs.h> -#include <mach/netx-regs.h> - -#include <mach/xc.h> - -static DEFINE_MUTEX(xc_lock); - -static int xc_in_use = 0; - -struct fw_desc { - unsigned int ofs; - unsigned int size; - unsigned int patch_ofs; - unsigned int patch_entries; -}; - -struct fw_header { - unsigned int magic; - unsigned int type; - unsigned int version; - unsigned int reserved[5]; - struct fw_desc fw_desc[3]; -} __attribute__ ((packed)); - -int xc_stop(struct xc *x) -{ - writel(RPU_HOLD_PC, x->xmac_base + NETX_XMAC_RPU_HOLD_PC_OFS); - writel(TPU_HOLD_PC, x->xmac_base + NETX_XMAC_TPU_HOLD_PC_OFS); - writel(XPU_HOLD_PC, x->xpec_base + NETX_XPEC_XPU_HOLD_PC_OFS); - return 0; -} - -int xc_start(struct xc *x) -{ - writel(0, x->xmac_base + NETX_XMAC_RPU_HOLD_PC_OFS); - writel(0, x->xmac_base + NETX_XMAC_TPU_HOLD_PC_OFS); - writel(0, x->xpec_base + NETX_XPEC_XPU_HOLD_PC_OFS); - return 0; -} - -int xc_running(struct xc *x) -{ - return (readl(x->xmac_base + NETX_XMAC_RPU_HOLD_PC_OFS) & RPU_HOLD_PC) - || (readl(x->xmac_base + NETX_XMAC_TPU_HOLD_PC_OFS) & TPU_HOLD_PC) - || (readl(x->xpec_base + NETX_XPEC_XPU_HOLD_PC_OFS) & XPU_HOLD_PC) ? - 0 : 1; -} - -int xc_reset(struct xc *x) -{ - writel(0, x->xpec_base + NETX_XPEC_PC_OFS); - return 0; -} - -static int xc_check_ptr(struct xc *x, unsigned long adr, unsigned int size) -{ - if (adr >= NETX_PA_XMAC(x->no) && - adr + size < NETX_PA_XMAC(x->no) + XMAC_MEM_SIZE) - return 0; - - if (adr >= NETX_PA_XPEC(x->no) && - adr + size < NETX_PA_XPEC(x->no) + XPEC_MEM_SIZE) - return 0; - - dev_err(x->dev, "Illegal pointer in firmware found. aborting\n"); - - return -1; -} - -static int xc_patch(struct xc *x, const void *patch, int count) -{ - unsigned int val, adr; - const unsigned int *data = patch; - - int i; - for (i = 0; i < count; i++) { - adr = *data++; - val = *data++; - if (xc_check_ptr(x, adr, 4) < 0) - return -EINVAL; - - writel(val, (void __iomem *)io_p2v(adr)); - } - return 0; -} - -int xc_request_firmware(struct xc *x) -{ - int ret; - char name[16]; - const struct firmware *fw; - struct fw_header *head; - unsigned int size; - int i; - const void *src; - unsigned long dst; - - sprintf(name, "xc%d.bin", x->no); - - ret = request_firmware(&fw, name, x->dev); - - if (ret < 0) { - dev_err(x->dev, "request_firmware failed\n"); - return ret; - } - - head = (struct fw_header *)fw->data; - if (head->magic != 0x4e657458) { - if (head->magic == 0x5874654e) { - dev_err(x->dev, - "firmware magic is 'XteN'. Endianness problems?\n"); - ret = -ENODEV; - goto exit_release_firmware; - } - dev_err(x->dev, "unrecognized firmware magic 0x%08x\n", - head->magic); - ret = -ENODEV; - goto exit_release_firmware; - } - - x->type = head->type; - x->version = head->version; - - ret = -EINVAL; - - for (i = 0; i < 3; i++) { - src = fw->data + head->fw_desc[i].ofs; - dst = *(unsigned int *)src; - src += sizeof (unsigned int); - size = head->fw_desc[i].size - sizeof (unsigned int); - - if (xc_check_ptr(x, dst, size)) - goto exit_release_firmware; - - memcpy((void *)io_p2v(dst), src, size); - - src = fw->data + head->fw_desc[i].patch_ofs; - size = head->fw_desc[i].patch_entries; - ret = xc_patch(x, src, size); - if (ret < 0) - goto exit_release_firmware; - } - - ret = 0; - - exit_release_firmware: - release_firmware(fw); - - return ret; -} - -struct xc *request_xc(int xcno, struct device *dev) -{ - struct xc *x = NULL; - - mutex_lock(&xc_lock); - - if (xcno > 3) - goto exit; - if (xc_in_use & (1 << xcno)) - goto exit; - - x = kmalloc(sizeof (struct xc), GFP_KERNEL); - if (!x) - goto exit; - - if (!request_mem_region - (NETX_PA_XPEC(xcno), XPEC_MEM_SIZE, kobject_name(&dev->kobj))) - goto exit_free; - - if (!request_mem_region - (NETX_PA_XMAC(xcno), XMAC_MEM_SIZE, kobject_name(&dev->kobj))) - goto exit_release_1; - - if (!request_mem_region - (SRAM_INTERNAL_PHYS(xcno), SRAM_MEM_SIZE, kobject_name(&dev->kobj))) - goto exit_release_2; - - x->xpec_base = (void * __iomem)io_p2v(NETX_PA_XPEC(xcno)); - x->xmac_base = (void * __iomem)io_p2v(NETX_PA_XMAC(xcno)); - x->sram_base = ioremap(SRAM_INTERNAL_PHYS(xcno), SRAM_MEM_SIZE); - if (!x->sram_base) - goto exit_release_3; - - x->irq = NETX_IRQ_XPEC(xcno); - - x->no = xcno; - x->dev = dev; - - xc_in_use |= (1 << xcno); - - goto exit; - - exit_release_3: - release_mem_region(SRAM_INTERNAL_PHYS(xcno), SRAM_MEM_SIZE); - exit_release_2: - release_mem_region(NETX_PA_XMAC(xcno), XMAC_MEM_SIZE); - exit_release_1: - release_mem_region(NETX_PA_XPEC(xcno), XPEC_MEM_SIZE); - exit_free: - kfree(x); - x = NULL; - exit: - mutex_unlock(&xc_lock); - return x; -} - -void free_xc(struct xc *x) -{ - int xcno = x->no; - - mutex_lock(&xc_lock); - - iounmap(x->sram_base); - release_mem_region(SRAM_INTERNAL_PHYS(xcno), SRAM_MEM_SIZE); - release_mem_region(NETX_PA_XMAC(xcno), XMAC_MEM_SIZE); - release_mem_region(NETX_PA_XPEC(xcno), XPEC_MEM_SIZE); - xc_in_use &= ~(1 << x->no); - kfree(x); - - mutex_unlock(&xc_lock); -} - -EXPORT_SYMBOL(free_xc); -EXPORT_SYMBOL(request_xc); -EXPORT_SYMBOL(xc_request_firmware); -EXPORT_SYMBOL(xc_reset); -EXPORT_SYMBOL(xc_running); -EXPORT_SYMBOL(xc_start); -EXPORT_SYMBOL(xc_stop); |