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ppc4xx: Consolidate 4xx PCIe board specific configuration

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This patch consolidates the PPC4xx board specific PCIe configuration
code. This way the duplicated code is removed. Boards can implement a
special, non standard behaviour (e.g. number of PCIe slots, etc) by
overriding the weak default functions.

Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Stefan Roese 2009-10-29 15:04:35 +01:00
parent 2cd95a25cb
commit b0b867462c
7 changed files with 172 additions and 442 deletions
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74
board/amcc/canyonlands/canyonlands.c
View File

@ -383,84 +383,16 @@ int is_pci_host(struct pci_controller *hose)
return (1);
}
static struct pci_controller pcie_hose[2] = {{0},{0}};
void pcie_setup_hoses(int busno)
int board_pcie_first(void)
{
struct pci_controller *hose;
int i, bus;
int ret = 0;
char *env;
unsigned int delay;
int start;
/*
* assume we're called after the PCIX hose is initialized, which takes
* bus ID 0 and therefore start numbering PCIe's from 1.
*/
bus = busno;
/*
* Canyonlands with SATA enabled has only one PCIe slot
* (2nd one).
*/
if (gd->board_type == BOARD_CANYONLANDS_SATA)
start = 1;
else
start = 0;
return 1;
for (i = start; i <= 1; i++) {
if (is_end_point(i))
ret = ppc4xx_init_pcie_endport(i);
else
ret = ppc4xx_init_pcie_rootport(i);
if (ret == -ENODEV)
continue;
if (ret) {
printf("PCIE%d: initialization as %s failed\n", i,
is_end_point(i) ? "endpoint" : "root-complex");
continue;
}
hose = &pcie_hose[i];
hose->first_busno = bus;
hose->last_busno = bus;
hose->current_busno = bus;
/* setup mem resource */
pci_set_region(hose->regions + 0,
CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
CONFIG_SYS_PCIE_MEMSIZE,
PCI_REGION_MEM);
hose->region_count = 1;
pci_register_hose(hose);
if (is_end_point(i)) {
ppc4xx_setup_pcie_endpoint(hose, i);
/*
* Reson for no scanning is endpoint can not generate
* upstream configuration accesses.
*/
} else {
ppc4xx_setup_pcie_rootpoint(hose, i);
env = getenv ("pciscandelay");
if (env != NULL) {
delay = simple_strtoul(env, NULL, 10);
if (delay > 5)
printf("Warning, expect noticable delay before "
"PCIe scan due to 'pciscandelay' value!\n");
mdelay(delay * 1000);
}
/*
* Config access can only go down stream
*/
hose->last_busno = pci_hose_scan(hose);
bus = hose->last_busno + 1;
}
}
return 0;
}
#endif /* CONFIG_PCI */

74
board/amcc/katmai/katmai.c
View File

@ -351,7 +351,7 @@ int is_pci_host(struct pci_controller *hose)
return 1;
}
static int katmai_pcie_card_present(int port)
int board_pcie_card_present(int port)
{
u32 val;
@ -367,78 +367,6 @@ static int katmai_pcie_card_present(int port)
return 0;
}
}
static struct pci_controller pcie_hose[3] = {{0},{0},{0}};
void pcie_setup_hoses(int busno)
{
struct pci_controller *hose;
int i, bus;
int ret = 0;
char *env;
unsigned int delay;
/*
* assume we're called after the PCIX hose is initialized, which takes
* bus ID 0 and therefore start numbering PCIe's from 1.
*/
bus = busno;
for (i = 0; i <= 2; i++) {
/* Check for katmai card presence */
if (!katmai_pcie_card_present(i))
continue;
if (is_end_point(i))
ret = ppc4xx_init_pcie_endport(i);
else
ret = ppc4xx_init_pcie_rootport(i);
if (ret == -ENODEV)
continue;
if (ret) {
printf("PCIE%d: initialization as %s failed\n", i,
is_end_point(i) ? "endpoint" : "root-complex");
continue;
}
hose = &pcie_hose[i];
hose->first_busno = bus;
hose->last_busno = bus;
hose->current_busno = bus;
/* setup mem resource */
pci_set_region(hose->regions + 0,
CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
CONFIG_SYS_PCIE_MEMSIZE,
PCI_REGION_MEM);
hose->region_count = 1;
pci_register_hose(hose);
if (is_end_point(i)) {
ppc4xx_setup_pcie_endpoint(hose, i);
/*
* Reson for no scanning is endpoint can not generate
* upstream configuration accesses.
*/
} else {
ppc4xx_setup_pcie_rootpoint(hose, i);
env = getenv ("pciscandelay");
if (env != NULL) {
delay = simple_strtoul(env, NULL, 10);
if (delay > 5)
printf("Warning, expect noticable delay before "
"PCIe scan due to 'pciscandelay' value!\n");
mdelay(delay * 1000);
}
/*
* Config access can only go down stream
*/
hose->last_busno = pci_hose_scan(hose);
bus = hose->last_busno + 1;
}
}
}
#endif /* defined(CONFIG_PCI) */
#ifdef CONFIG_POST

77
board/amcc/kilauea/kilauea.c
View File

@ -252,15 +252,19 @@ int board_emac_count(void)
return 2;
}
static int board_pcie_count(void)
/*
* Override the weak default implementation and return the
* last PCIe slot number (max number - 1).
*/
int board_pcie_last(void)
{
/*
* 405EXr only has one EMAC interface, 405EX has two
*/
if (is_405exr())
return 1;
return 1 - 1;
else
return 2;
return 2 - 1;
}
int checkboard (void)
@ -300,73 +304,6 @@ int pci_pre_init(struct pci_controller * hose )
}
#endif /* defined(CONFIG_PCI) */
#ifdef CONFIG_PCI
static struct pci_controller pcie_hose[2] = {{0},{0}};
void pcie_setup_hoses(int busno)
{
struct pci_controller *hose;
int i, bus;
int ret = 0;
bus = busno;
char *env;
unsigned int delay;
for (i = 0; i < board_pcie_count(); i++) {
if (is_end_point(i))
ret = ppc4xx_init_pcie_endport(i);
else
ret = ppc4xx_init_pcie_rootport(i);
if (ret == -ENODEV)
continue;
if (ret) {
printf("PCIE%d: initialization as %s failed\n", i,
is_end_point(i) ? "endpoint" : "root-complex");
continue;
}
hose = &pcie_hose[i];
hose->first_busno = bus;
hose->last_busno = bus;
hose->current_busno = bus;
/* setup mem resource */
pci_set_region(hose->regions + 0,
CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
CONFIG_SYS_PCIE_MEMSIZE,
PCI_REGION_MEM);
hose->region_count = 1;
pci_register_hose(hose);
if (is_end_point(i)) {
ppc4xx_setup_pcie_endpoint(hose, i);
/*
* Reson for no scanning is endpoint can not generate
* upstream configuration accesses.
*/
} else {
ppc4xx_setup_pcie_rootpoint(hose, i);
env = getenv ("pciscandelay");
if (env != NULL) {
delay = simple_strtoul(env, NULL, 10);
if (delay > 5)
printf("Warning, expect noticable delay before "
"PCIe scan due to 'pciscandelay' value!\n");
mdelay(delay * 1000);
}
/*
* Config access can only go down stream
*/
hose->last_busno = pci_hose_scan(hose);
bus = hose->last_busno + 1;
}
}
}
#endif
#if defined(CONFIG_POST)
/*
* Returns 1 if keys pressed to start the power-on long-running tests

67
board/amcc/makalu/makalu.c
View File

@ -256,73 +256,6 @@ int pci_pre_init(struct pci_controller * hose )
}
#endif /* defined(CONFIG_PCI) */
#ifdef CONFIG_PCI
static struct pci_controller pcie_hose[2] = {{0},{0}};
void pcie_setup_hoses(int busno)
{
struct pci_controller *hose;
int i, bus;
int ret = 0;
bus = busno;
char *env;
unsigned int delay;
for (i = 0; i < 2; i++) {
if (is_end_point(i))
ret = ppc4xx_init_pcie_endport(i);
else
ret = ppc4xx_init_pcie_rootport(i);
if (ret == -ENODEV)
continue;
if (ret) {
printf("PCIE%d: initialization as %s failed\n", i,
is_end_point(i) ? "endpoint" : "root-complex");
continue;
}
hose = &pcie_hose[i];
hose->first_busno = bus;
hose->last_busno = bus;
hose->current_busno = bus;
/* setup mem resource */
pci_set_region(hose->regions + 0,
CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
CONFIG_SYS_PCIE_MEMSIZE,
PCI_REGION_MEM);
hose->region_count = 1;
pci_register_hose(hose);
if (is_end_point(i)) {
ppc4xx_setup_pcie_endpoint(hose, i);
/*
* Reson for no scanning is endpoint can not generate
* upstream configuration accesses.
*/
} else {
ppc4xx_setup_pcie_rootpoint(hose, i);
env = getenv ("pciscandelay");
if (env != NULL) {
delay = simple_strtoul(env, NULL, 10);
if (delay > 5)
printf("Warning, expect noticable delay before "
"PCIe scan due to 'pciscandelay' value!\n");
mdelay(delay * 1000);
}
/*
* Config access can only go down stream
*/
hose->last_busno = pci_hose_scan(hose);
bus = hose->last_busno + 1;
}
}
}
#endif
#if defined(CONFIG_POST)
/*
* Returns 1 if keys pressed to start the power-on long-running tests

191
board/amcc/yucca/yucca.c
View File

@ -679,7 +679,7 @@ int is_pci_host(struct pci_controller *hose)
return 1;
}
static int yucca_pcie_card_present(int port)
int board_pcie_card_present(int port)
{
u16 reg;
@ -696,186 +696,55 @@ static int yucca_pcie_card_present(int port)
}
}
/*
* For the given slot, set rootpoint mode, send power to the slot,
* turn on the green LED and turn off the yellow LED, enable the clock
* and turn off reset.
*/
void yucca_setup_pcie_fpga_rootpoint(int port)
{
u16 power, clock, green_led, yellow_led, reset_off, rootpoint, endpoint;
switch(port) {
case 0:
rootpoint = FPGA_REG1C_PE0_ROOTPOINT;
endpoint = 0;
power = FPGA_REG1A_PE0_PWRON;
green_led = FPGA_REG1A_PE0_GLED;
clock = FPGA_REG1A_PE0_REFCLK_ENABLE;
yellow_led = FPGA_REG1A_PE0_YLED;
reset_off = FPGA_REG1C_PE0_PERST;
break;
case 1:
rootpoint = 0;
endpoint = FPGA_REG1C_PE1_ENDPOINT;
power = FPGA_REG1A_PE1_PWRON;
green_led = FPGA_REG1A_PE1_GLED;
clock = FPGA_REG1A_PE1_REFCLK_ENABLE;
yellow_led = FPGA_REG1A_PE1_YLED;
reset_off = FPGA_REG1C_PE1_PERST;
break;
case 2:
rootpoint = 0;
endpoint = FPGA_REG1C_PE2_ENDPOINT;
power = FPGA_REG1A_PE2_PWRON;
green_led = FPGA_REG1A_PE2_GLED;
clock = FPGA_REG1A_PE2_REFCLK_ENABLE;
yellow_led = FPGA_REG1A_PE2_YLED;
reset_off = FPGA_REG1C_PE2_PERST;
break;
default:
return;
}
out_be16((u16 *)FPGA_REG1A,
~(power | clock | green_led) &
(yellow_led | in_be16((u16 *)FPGA_REG1A)));
out_be16((u16 *)FPGA_REG1C,
~(endpoint | reset_off) &
(rootpoint | in_be16((u16 *)FPGA_REG1C)));
/*
* Leave device in reset for a while after powering on the
* slot to give it a chance to initialize.
*/
udelay(250 * 1000);
out_be16((u16 *)FPGA_REG1C, reset_off | in_be16((u16 *)FPGA_REG1C));
}
/*
* For the given slot, set endpoint mode, send power to the slot,
* turn on the green LED and turn off the yellow LED, enable the clock
* .In end point mode reset bit is read only.
* turn on the green LED and turn off the yellow LED, enable the
* clock. In end point mode reset bit is read only.
*/
void yucca_setup_pcie_fpga_endpoint(int port)
void board_pcie_setup_port(int port, int rootpoint)
{
u16 power, clock, green_led, yellow_led, reset_off, rootpoint, endpoint;
u16 power, clock, green_led, yellow_led,
reset_off, rp, ep;
switch(port) {
switch (port) {
case 0:
rootpoint = FPGA_REG1C_PE0_ROOTPOINT;
endpoint = 0;
power = FPGA_REG1A_PE0_PWRON;
green_led = FPGA_REG1A_PE0_GLED;
clock = FPGA_REG1A_PE0_REFCLK_ENABLE;
yellow_led = FPGA_REG1A_PE0_YLED;
reset_off = FPGA_REG1C_PE0_PERST;
rp = FPGA_REG1C_PE0_ROOTPOINT;
ep = 0;
break;
case 1:
rootpoint = 0;
endpoint = FPGA_REG1C_PE1_ENDPOINT;
power = FPGA_REG1A_PE1_PWRON;
green_led = FPGA_REG1A_PE1_GLED;
clock = FPGA_REG1A_PE1_REFCLK_ENABLE;
yellow_led = FPGA_REG1A_PE1_YLED;
reset_off = FPGA_REG1C_PE1_PERST;
rp = 0;
ep = FPGA_REG1C_PE1_ENDPOINT;
break;
case 2:
rootpoint = 0;
endpoint = FPGA_REG1C_PE2_ENDPOINT;
power = FPGA_REG1A_PE2_PWRON;
green_led = FPGA_REG1A_PE2_GLED;
clock = FPGA_REG1A_PE2_REFCLK_ENABLE;
yellow_led = FPGA_REG1A_PE2_YLED;
reset_off = FPGA_REG1C_PE2_PERST;
rp = 0;
ep = FPGA_REG1C_PE2_ENDPOINT;
break;
default:
return;
}
out_be16((u16 *)FPGA_REG1A,
~(power | clock | green_led) &
power = FPGA_REG1A_PWRON_ENCODE(port);
green_led = FPGA_REG1A_GLED_ENCODE(port);
clock = FPGA_REG1A_REFCLK_ENCODE(port);
yellow_led = FPGA_REG1A_YLED_ENCODE(port);
reset_off = FPGA_REG1C_PERST_ENCODE(port);
out_be16((u16 *)FPGA_REG1A, ~(power | clock | green_led) &
(yellow_led | in_be16((u16 *)FPGA_REG1A)));
out_be16((u16 *)FPGA_REG1C,
~(rootpoint | reset_off) &
(endpoint | in_be16((u16 *)FPGA_REG1C)));
}
out_be16((u16 *)FPGA_REG1C, ~(ep | reset_off) &
(rp | in_be16((u16 *)FPGA_REG1C)));
static struct pci_controller pcie_hose[3] = {{0},{0},{0}};
if (rootpoint) {
/*
* Leave device in reset for a while after powering on the
* slot to give it a chance to initialize.
*/
udelay(250 * 1000);
void pcie_setup_hoses(int busno)
{
struct pci_controller *hose;
int i, bus;
int ret = 0;
char *env;
unsigned int delay;
/*
* assume we're called after the PCIX hose is initialized, which takes
* bus ID 0 and therefore start numbering PCIe's from 1.
*/
bus = busno;
for (i = 0; i <= 2; i++) {
/* Check for yucca card presence */
if (!yucca_pcie_card_present(i))
continue;
if (is_end_point(i)) {
yucca_setup_pcie_fpga_endpoint(i);
ret = ppc4xx_init_pcie_endport(i);
} else {
yucca_setup_pcie_fpga_rootpoint(i);
ret = ppc4xx_init_pcie_rootport(i);
}
if (ret == -ENODEV)
continue;
if (ret) {
printf("PCIE%d: initialization as %s failed\n", i,
is_end_point(i) ? "endpoint" : "root-complex");
continue;
}
hose = &pcie_hose[i];
hose->first_busno = bus;
hose->last_busno = bus;
hose->current_busno = bus;
/* setup mem resource */
pci_set_region(hose->regions + 0,
CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
CONFIG_SYS_PCIE_MEMSIZE,
PCI_REGION_MEM);
hose->region_count = 1;
pci_register_hose(hose);
if (is_end_point(i)) {
ppc4xx_setup_pcie_endpoint(hose, i);
/*
* Reson for no scanning is endpoint can not generate
* upstream configuration accesses.
*/
} else {
ppc4xx_setup_pcie_rootpoint(hose, i);
env = getenv("pciscandelay");
if (env != NULL) {
delay = simple_strtoul(env, NULL, 10);
if (delay > 5)
printf("Warning, expect noticable delay before "
"PCIe scan due to 'pciscandelay' value!\n");
mdelay(delay * 1000);
}
/*
* Config access can only go down stream
*/
hose->last_busno = pci_hose_scan(hose);
bus = hose->last_busno + 1;
}
out_be16((u16 *)FPGA_REG1C,
reset_off | in_be16((u16 *)FPGA_REG1C));
}
}
#endif /* defined(CONFIG_PCI) */

123
cpu/ppc4xx/4xx_pcie.c
View File

@ -48,6 +48,129 @@ enum {
LNKW_X8 = 0x8
};
#if 1 // test-only
int board_pcie_first(void);
int board_pcie_last(void);
static struct pci_controller pcie_hose[CONFIG_SYS_PCIE_NR_PORTS];
/*
* Per default, all cards are present, so we need to check if the
* link comes up.
*/
int __board_pcie_card_present(int port)
{
return 1;
}
int board_pcie_card_present(int port)
__attribute__((weak, alias("__board_pcie_card_present")));
/*
* Some boards have runtime detection of the first and last PCIe
* slot used, so let's provide weak default functions for the
* common version.
*/
int __board_pcie_first(void)
{
return 0;
}
int board_pcie_first(void)
__attribute__((weak, alias("__board_pcie_first")));
int __board_pcie_last(void)
{
return CONFIG_SYS_PCIE_NR_PORTS - 1;
}
int board_pcie_last(void)
__attribute__((weak, alias("__board_pcie_last")));
void __board_pcie_setup_port(int port, int rootpoint)
{
/* noting in this weak default implementation */
}
void board_pcie_setup_port(int port, int rootpoint)
__attribute__((weak, alias("__board_pcie_setup_port")));
void pcie_setup_hoses(int busno)
{
struct pci_controller *hose;
int i, bus;
int ret = 0;
char *env;
unsigned int delay;
int first = board_pcie_first();
int last = board_pcie_last();
/*
* Assume we're called after the PCI(X) hose(s) are initialized,
* which takes bus ID 0... and therefore start numbering PCIe's
* from the next number.
*/
bus = busno;
for (i = first; i <= last; i++) {
/*
* Some boards (e.g. Katmai) can detects via hardware
* if a PCIe card is plugged, so let's check this.
*/
if (!board_pcie_card_present(i))
continue;
if (is_end_point(i)) {
board_pcie_setup_port(i, 0);
ret = ppc4xx_init_pcie_endport(i);
} else {
board_pcie_setup_port(i, 1);
ret = ppc4xx_init_pcie_rootport(i);
}
if (ret == -ENODEV)
continue;
if (ret) {
printf("PCIE%d: initialization as %s failed\n", i,
is_end_point(i) ? "endpoint" : "root-complex");
continue;
}
hose = &pcie_hose[i];
hose->first_busno = bus;
hose->last_busno = bus;
hose->current_busno = bus;
/* setup mem resource */
pci_set_region(hose->regions + 0,
CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
CONFIG_SYS_PCIE_MEMSIZE,
PCI_REGION_MEM);
hose->region_count = 1;
pci_register_hose(hose);
if (is_end_point(i)) {
ppc4xx_setup_pcie_endpoint(hose, i);
/*
* Reson for no scanning is endpoint can not generate
* upstream configuration accesses.
*/
} else {
ppc4xx_setup_pcie_rootpoint(hose, i);
env = getenv ("pciscandelay");
if (env != NULL) {
delay = simple_strtoul(env, NULL, 10);
if (delay > 5)
printf("Warning, expect noticable delay before "
"PCIe scan due to 'pciscandelay' value!\n");
mdelay(delay * 1000);
}
/*
* Config access can only go down stream
*/
hose->last_busno = pci_hose_scan(hose);
bus = hose->last_busno + 1;
}
}
}
#endif
static int validate_endpoint(struct pci_controller *hose)
{
if (hose->cfg_data == (u8 *)CONFIG_SYS_PCIE0_CFGBASE)

8
include/configs/yucca.h
View File

@ -389,6 +389,11 @@
#define FPGA_REG1A_PE_SELSOURCE_0 0x0002
#define FPGA_REG1A_PE_SELSOURCE_1 0x0001
#define FPGA_REG1A_GLED_ENCODE(n) (FPGA_REG1A_PE0_GLED >> (n))
#define FPGA_REG1A_YLED_ENCODE(n) (FPGA_REG1A_PE0_YLED >> (n))
#define FPGA_REG1A_PWRON_ENCODE(n) (FPGA_REG1A_PE0_PWRON >> (n))
#define FPGA_REG1A_REFCLK_ENCODE(n) (FPGA_REG1A_PE0_REFCLK_ENABLE >> (n))
/*----------------------------------------------------------------------------+
| PCIe Miscellaneous
+----------------------------------------------------------------------------*/
@ -407,6 +412,9 @@
#define FPGA_REG1C_PE1_PERST 0x0008
#define FPGA_REG1C_PE2_PERST 0x0004
#define FPGA_REG1C_ROOTPOINT_ENCODE(n) (FPGA_REG1C_PE0_ROOTPOINT >> (n))
#define FPGA_REG1C_PERST_ENCODE(n) (FPGA_REG1C_PE0_PERST >> (n))
/*----------------------------------------------------------------------------+
| Defines
+----------------------------------------------------------------------------*/