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Commit b82a82d0 authored by David Woodhouse's avatar David Woodhouse Committed by David Woodhouse
Browse files

ymfpci: treat firmware data as const 



Standardise both in-kernel and loaded firmware to be stored as
little-endian instead of host-endian.

Signed-off-by: default avatarDavid Woodhouse <dwmw2@infradead.org>
parent fa6e1cb6

sound/pci/ymfpci/ymfpci_main.c

+34 −25
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#include <linux/sched.h>

#include <linux/slab.h>

#include <linux/vmalloc.h>

#include <linux/mutex.h>



#include <sound/core.h>

#include <sound/control.h>
@@ -2009,11 +2010,34 @@ static struct firmware snd_ymfpci_controller_1e_microcode = { 
	.size = YDSXG_CTRLLENGTH,

	.data = (u8 *)CntrlInst1E,

};



#ifdef __BIG_ENDIAN

static int microcode_swapped;

static DEFINE_MUTEX(microcode_swap);



static void snd_ymfpci_convert_to_le(const struct firmware *fw)

{

	int i;

	u32 *data = (u32 *)fw->data;



	for (i = 0; i < fw->size / 4; ++i)

		cpu_to_le32s(&data[i]);

}

#endif



#ifdef CONFIG_SND_YMFPCI_FIRMWARE_IN_KERNEL

static int snd_ymfpci_request_firmware(struct snd_ymfpci *chip)

{

#ifdef __BIG_ENDIAN

	mutex_lock(&microcode_swap);

	if (!microcode_swapped) {

		snd_ymfpci_convert_to_le(&snd_ymfpci_dsp_microcode);

		snd_ymfpci_convert_to_le(&snd_ymfpci_controller_1e_microcode);

		snd_ymfpci_convert_to_le(&snd_ymfpci_controller_microcode);

		microcode_swapped = 1;

	}

	mutex_unlock(&microcode_swap);

#endif



	chip->dsp_microcode = &snd_ymfpci_dsp_microcode;

	if (chip->device_id == PCI_DEVICE_ID_YAMAHA_724F ||

	    chip->device_id == PCI_DEVICE_ID_YAMAHA_740C ||
@@ -2029,19 +2053,6 @@ static int snd_ymfpci_request_firmware(struct snd_ymfpci *chip) 


#else /* use fw_loader */



#ifdef __LITTLE_ENDIAN

static inline void snd_ymfpci_convert_from_le(const struct firmware *fw) { }

#else

static void snd_ymfpci_convert_from_le(const struct firmware *fw)

{

	int i;

	u32 *data = (u32 *)fw->data;



	for (i = 0; i < fw->size / 4; ++i)

		le32_to_cpus(&data[i]);

}

#endif



static int snd_ymfpci_request_firmware(struct snd_ymfpci *chip)

{

	int err, is_1e;
@@ -2050,9 +2061,7 @@ static int snd_ymfpci_request_firmware(struct snd_ymfpci *chip) 
	err = request_firmware(&chip->dsp_microcode, "yamaha/ds1_dsp.fw",

			       &chip->pci->dev);

	if (err >= 0) {

		if (chip->dsp_microcode->size == YDSXG_DSPLENGTH)

			snd_ymfpci_convert_from_le(chip->dsp_microcode);

		else {

		if (chip->dsp_microcode->size != YDSXG_DSPLENGTH) {

			snd_printk(KERN_ERR "DSP microcode has wrong size\n");

			err = -EINVAL;

		}
@@ -2067,9 +2076,7 @@ static int snd_ymfpci_request_firmware(struct snd_ymfpci *chip) 
	err = request_firmware(&chip->controller_microcode, name,

			       &chip->pci->dev);

	if (err >= 0) {

		if (chip->controller_microcode->size == YDSXG_CTRLLENGTH)

			snd_ymfpci_convert_from_le(chip->controller_microcode);

		else {

		if (chip->controller_microcode->size != YDSXG_CTRLLENGTH) {

			snd_printk(KERN_ERR "controller microcode"

				   " has wrong size\n");

			err = -EINVAL;
@@ -2090,7 +2097,7 @@ static void snd_ymfpci_download_image(struct snd_ymfpci *chip) 
{

	int i;

	u16 ctrl;

	u32 *inst;

	const __le32 *inst;



	snd_ymfpci_writel(chip, YDSXGR_NATIVEDACOUTVOL, 0x00000000);

	snd_ymfpci_disable_dsp(chip);
@@ -2105,14 +2112,16 @@ static void snd_ymfpci_download_image(struct snd_ymfpci *chip) 
	snd_ymfpci_writew(chip, YDSXGR_GLOBALCTRL, ctrl & ~0x0007);



	/* setup DSP instruction code */

	inst = (u32 *)chip->dsp_microcode->data;

	inst = (const __le32 *)chip->dsp_microcode->data;

	for (i = 0; i < YDSXG_DSPLENGTH / 4; i++)

		snd_ymfpci_writel(chip, YDSXGR_DSPINSTRAM + (i << 2), inst[i]);

		snd_ymfpci_writel(chip, YDSXGR_DSPINSTRAM + (i << 2),

				  le32_to_cpu(inst[i]));



	/* setup control instruction code */

	inst = (u32 *)chip->controller_microcode->data;

	inst = (const __le32 *)chip->controller_microcode->data;

	for (i = 0; i < YDSXG_CTRLLENGTH / 4; i++)

		snd_ymfpci_writel(chip, YDSXGR_CTRLINSTRAM + (i << 2), inst[i]);

		snd_ymfpci_writel(chip, YDSXGR_CTRLINSTRAM + (i << 2),

				  le32_to_cpu(inst[i]));



	snd_ymfpci_enable_dsp(chip);

}