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Replace manual SFR_DATA_0 and SFR_DATA_8 pair read and write with SFR_DATA_U16.

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Also added SFR_SMI_REG_U16.

Doing pval = reg_h; pval <<= 8; pval |= reg_l; dont always optimized by the compiler a some places, not all.

A snipped of the diff between two .asm files.

5414,5424c5414,5416
< ;     rtlplayground.c:1382: uint16_t pval = SFR_DATA_8;
< ;     rtlplayground.c:1383: pval <<= 8;
<       mov     r7,_SFR_DATA_8
<       mov     r6,#0x00
< ;     rtlplayground.c:1384: pval |= SFR_DATA_0;
<       mov     r4,_SFR_DATA_0
<       mov     r5,#0x00
<       mov     a,r6
<       orl     ar4,a
<       mov     a,r7
<       orl     ar5,a
---
> ;     rtlplayground.c:1382: uint16_t pval = SFR_DATA_U16;
>       mov     r6,((_SFR_DATA_U16 >> 0) & 0xFF)
>       mov     r7,((_SFR_DATA_U16 >> 8) & 0xFF)
This commit is contained in:
René van Dorst
2025-09-01 09:20:36 +02:00
committed by René van Dorst
parent 9dafeab490
commit b8928a8bcd
2 changed files with 19 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files
rtl837x_sfr.h
+1
View File
@@ -21,6 +21,7 @@ __sfr __at(0xa7) SFR_DATA_0;
#define SFR_EXEC_WRITE_SMI 11
/* SFR control registers for phy access via SMI/MDIO */
__sfr16 __at(0xc2c3) SFR_SMI_REG_U16;
__sfr __at(0xc2) SFR_SMI_REG_H;
__sfr __at(0xc3) SFR_SMI_REG_L;
__sfr __at(0xc4) SFR_SMI_DEV;
rtlplayground.c
+18 -23
View File
@@ -505,8 +505,7 @@ void sds_write_v(uint8_t sds_id, uint8_t page, uint8_t reg, uint16_t v)
print_string("Q"); print_byte(sds_id); print_byte(page); print_byte(reg);
write_char(':'); print_byte(v >> 8); print_byte(v); write_char(' ');
#endif
SFR_DATA_8 = v >> 8;
SFR_DATA_0 = v;
SFR_DATA_U16 = v;
SFR_93 = reg;
SFR_94 = page << 1 | sds_id;
SFR_EXEC_GO = SFR_EXEC_WRITE_SDS;
@@ -1086,11 +1085,11 @@ void phy_write_mask(uint16_t phy_mask, uint8_t dev_id, uint16_t reg, uint16_t v)
print_string("P"); print_byte(phy_mask>>8); print_byte(phy_mask); print_byte(dev_id); write_char('.'); print_byte(reg>>8); print_byte(reg); write_char(':');
print_byte(v>>8); print_byte(v); write_char(' ');
#endif
SFR_DATA_8 = v >> 8; // SFR_A6
SFR_DATA_0 = v; // SFR_A7
SFR_DATA_U16 = v ; // SFR_A6, SFR_A7
SFR_SMI_PHYMASK = phy_mask; // SFR_C5
SFR_SMI_REG_H = reg >> 8; // SFR_C2
SFR_SMI_REG_L = reg; // SFR_C3
SFR_SMI_REG_U16 = reg; // SFR_C2, SFR_C3
SFR_SMI_DEV = (phy_mask >> 8) | dev_id << 3 | 2; // SFR_C4: bit 2 can also be set for some option
SFR_EXEC_GO = SFR_EXEC_WRITE_SMI;
do {
@@ -1132,8 +1131,8 @@ void phy_read(uint8_t phy_id, uint8_t dev_id, uint16_t reg)
#ifdef REGDBG
print_string("p"); print_byte(phy_id); print_byte(dev_id); write_char('.'); print_byte(reg>>8); print_byte(reg); write_char(':');
#endif
SFR_SMI_REG_H = reg >> 8; // c3
SFR_SMI_REG_L = reg; // c2
SFR_SMI_REG_U16 = reg; // c2, c2
SFR_SMI_PHY = phy_id; // a5
SFR_SMI_DEV = dev_id << 3 | 2; // c4
@@ -1208,9 +1207,7 @@ void sds_init(void)
p001e.000d:0010 p001e.000d:0010 R02f8-00000010 R02f4-00000010 P000001.1e00000d:b7fe
*/
phy_read(0, 0x1e, 0xd);
uint16_t pval = SFR_DATA_8;
pval <<= 8;
pval |= SFR_DATA_0;
uint16_t pval = SFR_DATA_U16;
// PHY Initialization:
REG_WRITE(0x2f8, 0, 0, pval >> 8, pval);
@@ -1224,9 +1221,7 @@ void sds_init(void)
phy_write_mask(0x1, 0x1e, 0xd, pval);
phy_read(0, 0x1e, 0xd);
pval = SFR_DATA_8;
pval <<= 8;
pval |= SFR_DATA_0;
pval = SFR_DATA_U16;
REG_WRITE(0x2f8, 0, 0, pval >> 8, pval);
@@ -1408,15 +1403,15 @@ void rtl8373_init(void)
// q000601:c800 Q000601:c804 q000601:c804 Q000601:c800
sds_read(0, 0x06, 0x01);
uint16_t pval = SFR_DATA_8;
pval <<= 8;
pval |= SFR_DATA_0;
uint16_t pval = SFR_DATA_U16;
sds_write_v(0, 0x06, 0x01, pval | 0x04);
delay(50);
sds_read(0, 0x06, 0x01);
pval = SFR_DATA_8;
pval <<= 8;
pval |= SFR_DATA_0;
pval = SFR_DATA_U16;
sds_write_v(0, 0x06, 0x01, pval & 0xfffb);
phy_config_8224();
@@ -1430,9 +1425,9 @@ void rtl8373_init(void)
sds_write_v(1, 0x36, 0x05, 0x4000);
sds_write_v(1, 0x1f, 0x02, 0x001f);
sds_read(1, 0x1f, 0x15);
pval = SFR_DATA_8;
pval <<= 8;
pval |= SFR_DATA_0;
pval = SFR_DATA_U16;
// r0a90:000000f3 R0a90-000000fc
reg_read_m(0xa90);